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1. TB CONNECT ION CON OL TI L1 disce 12 n 2 T8 MIXER 2 oS X o 224 2 T2 L2 L3 E Ts L3 T 3h 6 60HZ LOW VOLTAGE CONNECT ION 2PB START ge yh ha IPB X STOP NE oL _ GUARD con C NC C NC 1 2 NC 245 C3 E 44 ee O a C NO C NO z TIMER X NOT USED ON SINGLE SPEED CON 85 SPLICE SPLICE MACHINES CON L I CON L2 CONNECT WIRE IFB P1 CON LI CONNECT WIRE IFB P2 TO CON L2 2PB START LOOK TIMER CONTACTS TMR LPB OPEN CLOSED e 2LS XLS tle NC Nc OL c GUARD Cp 1 2 6 1 5 NS E e HOLD 1 3 1 2 gt i TIMED 1 2 amp 1 3 11 CON i 3 7 g IP i P 660 MIXER 11 208 240 60HZ di THREE PHASE OPTIONAL DERIVED FROM 2 a 18823 ay TIMER CONTROL HOBART Al 1733 Page 81 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 ELECTRICAL OPERATION H600 with Brake Early Mixers H 600 T SCHEMATIC DATE 5 24 77 589 sag TO L OF Ki CONTACTOR OR 4 SI FUSE TIMER STOP AUXILIARY TO L2 OF KI CONTACTOR OR TO TRANSFORMER BRAKE RA SwtTC 2 H 600 SCHEMATIC AUxILIARY
2. 61 Flexa Gear Belt Adjustment 1 61 Power Bowl Lift Screw Assembly 62 Power Lift Screw Adjustment 64 Motor Gurrent Test eeren rino pina Pee EP eR Se VUES etr PebUb EP 64 TIMER AND SWITGEB PEATE n ater tte tracce ecce tnt eats Fere act MG 65 Technical Notes sexdecim Doux Met ed lem ed aie vade quiae Fu ees RUN e v 65 Electronic Timer Operation Programming 1 0 65 Continuous MIXING 66 Using Dial Timer to Set Mixing Time 4 2 1 2 66 Using Preset Keys P1 or P2 to Set Mixing Time 66 Programming Preset Keys P1 and P2 Mixing Time 67 Removal and Replacement 68 Keypad est is tr cee Date ter eris bota Eie uten EO tbe batir d eerie Ete qd 69 Timer Service Diagnostics 69 Electronic Timer Upgrade Kit Installation Instructions 71 ELECTRICAL OPERAT
3. E deu E Fe Dat pula a aede E Papi 29 hemioval Disassermbly Eg niece Ode EE EDD a DAC PETRA de a 29 EER e a Ed UE RN t RR 30 12 Attachment Hub Assembly 2 31 Charges Cerere ere re d ecrit Soy decks ee Ped E daca 31 Service Information cuan RR re e dU Shad 31 Replacing the Shear Key 31 Removal enis a ra eich a eed ere o ees dq ur a erg 32 Installation 33 Gear Selecto ASSEM y 6 3 us MARE EE e b ae o sa ERE etas 33 Removal 1 52 Depp res Du S pei 33 Installation 6001800 1 2 34 Installation 2 6 eerte o ret dat De TI sa me ce ash dot 34 since cc PEE 34 Removal A e sae sepia 2 are ope eee OQ Dee OP deve een Up gs 34 Plunger 222225 oe eph Pee Goad Pepe redes 35 hcum exc 35 MOTOR rcx PU 35 Te
4. 53 Bowl Height Sensing nes au iie egre ottenere eee teg zac tege des edd mb edades ce A 54 Adjustment Stop Screw Located on Left Side of Lift Screw 54 Adjustment Stop Screw Located Under Bowl 55 Man al Bowl e Der done darme De abe bb qe Bee VID dune dud 55 Handwheel Bracket Assembly 1 55 Handwheel Adj stmetit crga rele rues our Ao EUR e BRICK MI E RA piede 57 Manual Bowl Lift Screw Assembly 57 LIES Crew 58 Bowl Lift Nut Assembly Adjustment 58 Power Bowl Lift Motor and Transmission 4 58 Changes s boe ee eS Pe Hale Daa oad uev o Marge eio 58 Removal C TU at tata sacar el is 58 Disassembling the PBL Transmission 59 Disassembling the Hobart PBL 2 60 Reassembly of Hobart PBL Motor and Gear 61 Reinstalling the PBL Unit
5. 13 Turn the lift screw down by hand until it is free of the transmission housing and remove the screw 14 Remove the lift screw bearing from its seat in the transmission housing Reassembly NOTE The L800 has a spacer nut located below the bowl lift screw nut on the bowl support Be sure this is in place before installing the lift screw 1 Install the lift screw bearing in its seat in the transmission housing Page 63 of 88 2 Inspect the needle bearing for wear replace if necessary and lubricate NOTE The bowl lift nut is rectangular and the long side must be parallel to the front of the pedestal In cases where a bowl lift nut assembly is used make certain that the head of the cap screw faces out toward apron CAP SCREW Ma BowLurr B NUT ASSEMBLY 3 Reassemble lift screw assembly in reverse order 4 Position the lift screw the bowl support Reinstall lift nut retainer 6 With the lift screw in position turn it by hand until the needle bearing is against the machined surface of the transmission case 7 Reinstall the locking washer and special bearing locknut SPECIAL BEARING LOCKNUT BALL BEARING MACHINED NEEDLE Na SURFACE BEARING I MACHINED HEX SURFACE RETAINER gt LIFT NUT 6660 8 Perform POWER LIFT SCREW ADJUSTMENT 9 Reinstall the collar and pin
6. When the last preset time reaches 00 00 1 the P1 or P2 indicator goes off and the mixer returns to idle display REMOVAL AND REPLACEMENT ky WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES NOTE If the timer control board is being replaced set the jumpers on replacement board to match the board being replaced TIMER CONTROL BOARD JUMPER CONFIGURATION Jumper Position Description Between middle pin and pin marked PLNTRY A in illustration 10275 Pin 1 to 2 Standard position Fifteen minute timer with 10 second increment Pin 2 to 3 Twenty two minute timer with 15 second increment NOTE If jumper location is changed mixer must go from power off to power on to reset timer 1 Disassemble the switch plate assembly Refer to illustration 10276 KEYPAD amp PLATE DISPLAY MAIN ASSEMBLY BOARD BOARD RW ASSY SEAL ME BUZZER KNOB Ld er SWITCH START CAP 4 ew STOP SWITCH STOP CAP 10276 F12536 Rev A December 2005 68 of 88 MODEL 600 660 1 800 TIMER AND SWITCH PLATE 2 Remove buzzer wires from main board assembly by loosening two terminal screws on board and pulling wires out 3 Lift board off retaining studs NOTE Apply a small amount of Lubriplate FGL 2 Part No 103881 67 to inside of seal when reassembling 4 Re
7. qe rc PLANETARY OIL PUMP Where Applicable NOTE Check the oil pump inlet 7 photo 6578 and outlet 2 photo 6578 holes to verify they are not clogged If there is any oil in the planetary cavity a small amount of it should flow from the outlet tube when the fiber conveying gear 3 photo 6578 is turned by hand A little oil should also come out of the small hole 8 photo 6578 and drip on the conveying gear Disassembly 1 Remove oil pump assembly from planetary For accessing the mounting screws align the thru hole in conveying gear with screw to be removed 1 photo 6578 Page 17 of 88 NOTE Only two screws secure the oil pump assembly to the planetary casting The screws are opposite each other on the oil pump assembly As shown in photo 6578 only one screw number 6 can be seen A Remove two mounting screws only one location shown 6 photo 6578 THREE PIECE OIL PUMP BODY SHOWN 2 Remove two screws 5 photo 6578 that hold the top body and bottom plates together to gain access to pump gears NOTE In later model oil pumps the top and body sections of the three piece oil pump body were combined into a single piece construction for simplification 3 Remove pin from shaft and remove gears PIN IS SLIP FIT INTO SHAFT 4 Drive pin from hub 4 photo 6578 of conveying gear F12536 Rev A December 2005 MODEL H600 P660 L8
8. SERVICE MANUAL This service manual revision includes information from Service Manual F12536 and F23356 and Technical Service Bulletins 604 621 640 657 716B 731 734A 764 966 978 1034 1137 1184 and 1219 These documents are obsolete and should be destroyed HOBART SERVICE MIXER MODEL H600 H600 T P660 L800 6579 NOTICE This Manual is prepared for the use of trained Hobart Service Technicians and should not be used by those not properly qualified If you have attended a Hobart Service School for this product you may be qualified to perform all the procedures described in this manual This manual is not intended to be all encompassing If you have not attended a Hobart Service School for this product you should read in its entirety the repair procedure you wish to perform to determine if you have the necessary tools instruments and skills required to perform the procedure Procedures for which you do not have the necessary tools instruments skills should be performed by a trained Hobart Service Technician Reproduction or other use of this Manual without the express written consent of Hobart is prohibited A Product of Hobart TROY OHIO 45374 F12536 Rev A December 2005 MODEL 600 660 1 800 GENERAL TABLE CONTENTS GENERAL ish Due e UE Per p bb Due cp Ma xe e Dr 4 Introductiorz vo cite cc oue Exi wehren d bue ecu netten PM Dir
9. 6 Remove worm gear and shock absorber drive flange NOTE If necessary remove the screws to separate the drive flange from the worm gear 7 Slide shock absorber compressor and key off shaft NOTE When reassembling make certain that retaining ring is installed in the lower groove on the shaft 1 Fig 6564 8 Remove shock absorber spring washer and retaining ring Assembly NOTE Make certain that the retaining ring is installed in the lower groove on shaft Newer shafts will only have one groove machined into shaft 1 Assembly of the worm gear shaft assembly is the reverse order of removal SHOCK ABSORBER ADJUSTMENTS The shock absorber spring tension is factory set for normal loads Varying loads could cause the shock absorber to bump and be mistaken as gear trouble If bumping occurs adjust the tension applied to the shock absorber as outlined below Tension Adjustment 1 Remove WORM GEAR SHAFT ASSEMBLY as outlined in TRANSMISSION DISASSEMBLY 2 Reposition shock absorber retaining ring from the lower groove to the upper groove RETAINING RING UPPER GROOVE zi 5 WORMGEARSHAFT O O O UPPER GROOVE NOT PRESENT ON ALL 3 Perform TRANSMISSION ASSEMBLY 4 Check for proper operation F12536 Rev A December 2005 7 ADJUSTING SLEEVE m VIT PTT S SET SCREW 6624 2 Slowly turn the adjusting sleeve clockwise while turning the mixer moto
10. TO Li 2 3 OF KI CONTACTOR 5 OR 4 TO A2 OF SI E FUSE istor START TO L2 OF KI CONTACTOR TO TRANSFORMER POWER BOWL LIFT PBL OPTIONAL FUSE BLOCK TOL OFKI CONTACTOR 2 OF KI CONTACTOR 10291 F12536 Rev A December 2005 Page 82 of 88 MODEL H600 P660 L800 ELECTRICAL OPERATION H600 with Brake cont d Early Mixers H600 DATE 5 24 77 TRANSFORMER NOTE OPTIONAL ON 200 230 VOLT MODELS NOTE FOR PROPER RUSE SIZE STANDARD ON 460 VOLT MODELS REPLACEMEN PAR CATALOG 460 JUMPER CONTACTOR THREE PHASE SINGLE PHASE KI CONTACTOR MI XER MOTOR 10292 Page 83 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 TROUBLESHOOTING TROUBLESHOOTING POWER FLOW H600 AND L800 POWER FLOW if 4 28 m SPEED 4th SPEED 10286 F12536 Rev A December 2005 Page 84 of 88 MODEL 600 660 1 800 TROUBLESHOOTING P660 POWER FLOW 1st SPEED 2nd SPEED 10281 Page 85 of 88 F12536 Rev A December 2005 MODEL 600 660 1 800 TROUBLESHOOTING NOTE Mechanical troubleshooting basically involves locating the source of a noise an oil leak or determining the cause of a mixer malfunction The following list of symptoms and their possible causes
11. Adjustment Stop Screw Located Under Bowl Support Fig 6661 1 Verify BOWL TO BEATER CLEARANCE is correct Remove pedestal apron Raise bowl lift until the stop screw hits the bowl support stop then lower bowl support 1 4 from full up position BOWL SUPPORT STOP SCREW 6661 A H600 With bowl switch actuator against the bottom of the head of the hex bolt and a locknut snugged against the actuator adjust the hex head bolt until the bowl switch actuator operates the switch closes the N O contacts B Tighten the locknut against bowl lift nut retainer C 1800 Allow actuator to rest on locknut Snug the hex head bolt against actuator and tighten locknut against bowl lift nut retainer HEAD BOLT BOLT L800 6634 4 Apply power to machine and perform BOWL HEIGHT SENSING Check A Repeat adjustment if necessary 5 Reinstall pedestal apron Page 55 of 88 MANUAL BOWL LIFT HANDWHEEL BRACKET ASSEMBLY NOTE If either the handwheel bracket bearing assembly or handwheel clamping ring has malfunctioned both parts are to be replaced due to the additional steps required to maintain the correct relationship between the handwheel bracket bearing assembly the frame and the handwheel bracket clamping ring ky WARNING DISCONNECT THE v ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT Ss TAGOUT PROCE
12. Check mixer for proper operation Bowl Clamp Adjustment NOTE Bowl clamp tension is controlled by a spring washer and lock nut The tension of the bowl clamp should be tight enough to maintain its position while engaged 1 Install spring washer cupped side up onto threaded shaft of bowl clamp 2 Increase or decrease tension on the bowl clamps by tightening or loosening the lock nuts Page 52 of 88 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM x LOCK NUT SPRING WASHER 6631 BOWL TO BEATER CLEARANCE NOTE The presence of bowl height sensing does not affect the bowl to beater check or adjustment procedures They are the same for all mixers Check 1 Install the bowl and securely lock it into position on the bowl support NOTE If the customer is using both a flat B beater and an ED dough hook use the flat B beater to check and set bowl to beater clearance to 1 8 However if the customer uses only the ED dough hook the clearance between bottom of arm and bowl is 3 16 to 5 16 2 Install a flat B beater on agitator shaft 3 Raise bowl support to the highest position Uy WARNING DISCONNECT THE Q ELECTRICAL POWER TO THE Cue S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES 4 Check the clearance between the bottom of the beater and bowl with a feeler gauge Clearance is 1 8 Adjustment Adjusting Screw Located Under Bowl Support 1 Remove the caplug from the bu
13. Page 79 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 ELECTRICAL OPERATION P660 Single Phase WARNING ELECTRICAL AND GROUNDING COMPLY WITH THE APPLICABL NATIONAL ELECTRICAL CODE ELECTRICAL CODES SERVICE CONNECT ION CONNECTIONS MUST E PORTIONS OF THE AND OR OTHER LOCAL TIMER DERIVED FROM F 18822A TIMER CONTROL NOT USE CON SPLICE SINGLE SPEED ETE MACHINE x mimo mel o SS III a Tu CON L2 CONNECT WIRE 1 1 TO CON LI CONNECT WIRE IFB P2 TO CON L2 TIMER 5 LOCK 2 START 1 l stop Ng 2LS CON 15 NC NC DL c GUARD C96 NC NO C L r 5 ASPLICE CZ i C HEIGHT S lt _ C NNO 1 te A 660 208V 60 2 1 PHASE OPTIONAL 240V 60 2 1 PHASE ELECTRONIC F12536 Rev December 2005 E HOBART Al 1732 Page 80 of 88 660 MODEL H600 P660 L800 ELECTRICAL OPERATION WARNING ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND OR OTHER LOCAL ELECTRICAL CODES SERVICE
14. photo 6595 2 Remove upper clutch and upper gear assembly 2 photo 6595 3 Remove shifting clutch 3 photo 6595 Remove retaining ring upper clutch lower gear assembly and washer 4 photo 6595 5 Remove lower retaining ring ball bearing and washer 5 photo 6595 6 Remove lower clutch and lower gear assembly 6 photo 6595 Remove shifting clutch 7 photo 6595 Remove retaining ring lower spacer and lower clutch Also remove the upper gear assembly 8 photo 6595 F12536 Rev A December 2005 H600 L800 CLUTCH SHAFT ASSEMBLY 9 Reassemble parts in reverse order of removal DISASSEMBLY P660 TWO SPEED CLUTCH SHAFT Figs 6596 6599 CAUTION Spacer Fig 6599 is stepped inside area raised and must be installed toward the upper gear If not installed properly damage to the clutch shaft could occur NOTE Some large batch sizes for National Chains have been approved by Hobart Engineering in Troy OH If it is suspected that the batch size is too large call Field Engineering National Service and verify its size before indicating to the customer that the mixer may be overloaded Page 26 of 88 1 2 3 MODEL 600 660 1 800 TRANSMISSION NOTE In February 1994 the clutch shaft was redesigned on model P660 mixers A gear clutch spacer is now used eliminating the retaining ring between the upper and lower gear assemblies Whenever a replacement clutch shaft usi
15. 2 Discharge the PBL capacitor if present as outlined in POWER BOWL LIFT ASSEMBLY 3 Discharge the mixer motor capacitors whenever applicable A Note wiring connection locations then disconnect capacitors Page 36 of 88 MODEL H600 P660 L800 MOTOR CAPACITORS B Remove capacitors Remove the shield s if present Drain the transmission oil as instructed under LUBRICATION outlined in the GENERAL section 6 Remove P clip on motor junction box 1 photo 10256 7 Remove the top cover support bracket 4 photo 10256 If mixer has a power bowl lift remove A Note motor wiring connection locations the fuse block on bracket 2 photo 10256 then disconnect the motor leads at the heater and contactor B Let control panel hang over the side of mixer with a rag between control panel and mixer to prevent scratching mixer painted surface 10 Remove two set screws and snap ring then remove fan from back of motor if present pu 10025 ie 8 is equipped with a brake remove the leads to the brake solenoid 1 photo 10257 N SNAP RING 11 Gain access to the lower motor mounting bolt A Remove the access cover or bowl guard reed switch housing whichever is present Page 37 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 MOTOR B Remove gasket material Replace gasket if cracked or otherwise
16. 2 Remove agitator 3 While holding wire cage assembly in one hand push down on the release knob with free hand to release the saddle shoe F12536 Rev A December 2005 55939 p EE SHOE Ke P D 4 4 Lower front of wire cage assembly slightly then move cage toward the rear to free fixed and adjustable shoes from rim of drip cup em 5 Reassemble in reverse order New Style 1 Lower bowl support 2 Remove agitator 3 Rotate cage clockwise as looking down on cage until saddle shoe aligns with opening of drip cup SADDLE SHOE Ny 4 Lower front of cage until saddle shoe clears opening of drip cup A Remove cage 5 Reassemble in reverse order Page 10 of 88 MODEL 600 660 1800 BOWL GUARD BOWL GUARD ASSEMBLY NOTE Bowl guard assembly removal check and adjustment procedures are the same for both styles of bowl guard Removal ADJUSTING SCREW ADJUSTABLE SHOE RIM OF DRIP CUP 1 Lower bowl support B 2 Remove agitator and bowl 3 Remove wire cage 4 Support bowl guard and remove screws securing drip cup to transmission case 0X REMOVE SCREWS TWO OUT OF VIEW C Remove bowl guard assembly D Reassemble in reverse order Check bowl guard switch and mixer for proper operation Check 2 1 Raise bowl support all the way up until it stops 3 2 Rotate wire cage
17. 3 photo 6574 CAUTION If a pry bar is used between the planetary and internal gear always pry down so that pressure is not applied directly to the cast iron lip of planetary 1 Fig 10287 Replace planetary if lip is damaged DO NOT APPLY DIRECT PRESSURE TO LIP OF cen A PLANETARY CASTING 10287 NOTE Should removal of planetary prove to be difficult two tapped holes 4 photo 6574 are provided on opposite sides of planetary center for use in anchoring a puller Remove cap screws to gain access to the holes Apply sealant to threads of cap screws then reinstall cap screws during reassembly of planetary 5 Carefully slide planetary from planetary shaft 6 Remove the planetary washer chamfer side up toward transmission housing and key PLANETARY WASHER s 6623 F12536 Rev A December 2005 MODEL 600 660 1800 PLANETARY Disassembly AGITATOR SHAFT 1 Pry off oil retaining cap 4 photo 6577 ET i 2 Remove retaining ring 3 photo 6577 3 Remove pinion gear and key CAUTION Support planetary shaft while driving shaft from planetary Shaft will fall freely when pressed out of bearings 4 Using a rubber mallet carefully drive the agitator shaft down and free of the planetary SUPPORT PLANETARY SHAFT WHILE REMOVING IT FROM CASTING 6576 5 Remove two screws and lock washers that hold special washer and oil baffle in place NOTE The or
18. ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE PORTIONS OF THE ATITONAL ELECTRICAL CODE AND OR OTHER LOCAL ELECTRICAL CODES SS 2 R CS a RES udi ax jer qe ee T ze BOWL LIFT wo p l SERVICE S BA t 7 e CONNECTION tme 7 L1 HIGH VOLTAGE CONNECT ION TRANSFORMER CONN CON ECT CT IONS TO L1 ZLS NO SPLICE HE IGHT C 1 1 2 2PB START ae NC 2LS Nc OL GUARD lt 215 HEIGHT C NO CONTROL F12536 Rev December 2005 Page 78 of 88 OPTIONRL ELECTRONIC TIMER POWER BOWL LIFT SWITCH POSITIONS 10 22 10 o2 1 2 32 04 30 04153 4 5 TB u 5 7 2 MIXER 4 MOTOR 1 LOW VOLTAGE CONNECT ION WHEN TRANSFORMER IS CONNECT WIRE IFB PI CONNECT WIRE IFB P2 NOT USED TO CON LI TO CON L2 OPTIONAL POWER BOWL LIFT AVAILABLE ONLY ON 200 250 VOLT MACHINES BOWL LOCK NOT AVAILABLE WITH POWER BOWL LIFT TIMER CONTACTS TMR OPEN CLOSED OF 1 2 8 1 5 PRIMED 278 5 x2 H 600 L 800 115 200v 230V 60HZ SINGLE PHASE DERIVED FROM F 18820B HOBART Al 1729 MODEL H600 P660 L800 ELECTRICAL OPERATION H600 L800 Three Phase WARNING ELECTRICAL AND
19. Install selector plate Check mixer for proper operation SHIFTER YOKES My WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES NOTE When servicing the shifting yokes it is not necessary to disassemble the rest of the transmission REMOVAL 1 Remove TOP COVER 2 Perform GEAR SELECTOR REMOVAL as outlined in this section 3 Remove transmission cover CAUTION Clean oil out of shifting rod positioning hole in transmission case to avoid a hydraulic effect when transmission is reassembled Hydraulic effect will not allow shifting rod to seat fully into hole and may result in the top cover of transmission braking during reassembly 4 Remove the shifting rod 3 photo 6594 5 Disengage the shifting yoke P660 5 photo 6594 or upper and lower shifter yokes H600 amp L800 and remove SO V D QM P660 SHOWN Page 34 of 88 MODEL H600 P660 L800 MOTOR PLUNGER ADJUSTMENT NOTE Each shifting yoke has two adjustable spring loaded plungers that provide flexible shifting When the adjustment is not correct and the shifter handle is moved to a different speed the clutch will hang in the previous speed If an adjustment is necessary check all plungers that are present on the mixer being serviced up to four plungers for H600 amp L800 1 Loosen the lock nut and adjust the screw so that total movement of plunger is
20. NI TAGOUT PROCEDURES 1 Remove TOP COVER ASSEMBLY and pedestal apron Discharge the PBL capacitor Remove the mixer MOTOR Remove the Flexa Gear belt Remove the clutch assembly and collar Place a wrench on the machined hex surface of Qr oom F12536 Rev A December 2005 the lift screw to prevent movement and adjust the special bearing locknut to 0 005 clearance between the needle bearing and the machined surface of the transmission housing SPECIAL BEARING pme LOCKNUT E lt BALL BEARING NEEDLE SURFACE UT MACHINED BEARING MACHINED HEX RETAINER 9 SURFACE LIFT NUT 6660 7 Reinstall the collar and clutch assembly 8 Reinstall and adjust the Flexa Gear belt 9 Reinstall the mixer MOTOR TOP COVER ASSEMBLY and pedestal apron 10 Check mixer for proper operation Motor Current Test WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DISCONNECT POWER AND FOLLOW LOCKOUT TAGOUT PROCEDURES ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 1 Lower bowl support if possible 2 Disconnect power to mixer 3 Remove top cover 4 Clamp ammeter around one of the power bowl lift motor leads Apply power to mixer 6 Place a load on bowl support equivalent to an average
21. NOTE Before replacing the clutch assembly make certain the six detent springs are located properly in the clutch 10 Assemble the clutch assembly A Slide the hub assembly on the shaft F12536 Rev A December 2005 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM B Install the three short springs in the holes of the clutch that are next to the pins of the clutch C Install the longer springs in the remaining open holes D Place the balls on top of the springs E Place the detent plate over the hub assembly Press down on detent plate to compress springs enough to start the nut on the shaft threads DETENT PLATE SHORT SPRINGS pee F Tighten the nut until the holes for the pin are aligned and install the pin 11 Reinstall the Flexa Gear belt 12 Perform FLEXA GEAR BELT ADJUSTMENT 13 Check PBL for proper operation 14 Reinstall mixer MOTOR 15 Reinstall TOP COVER ASSEMBLY 16 Check mixer for proper operation Power Lift Screw Adjustment NOTE A special bearing locknut located below the clutch assembly on the lift screw provides the end play adjustment Upward thrust is taken by a needle bearing while downward thrust is taken by a ball bearing A minimum of 0 005 end play should be allowed between the needle bearing and the machined surface of the transmission housing WARNING DISCONNECT THE m x ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT
22. NOTE The slideways should be lubricated semi annually or more often depending on usage 2 Remove pedestal apron thumbscrews 3 Lubricate slideways with Lubriplate 630AA 4 Replace pedestal apron Coat lift screw with Lubriplate 630 1 photo 6572 Mixer Motor D Replace pedestal apron NOTE The mixer motor front bearing receives oil from the transmission An oil drain hole located below the bearing returns excess oil back to the transmission When servicing the motor make certain that the drain hole is located properly and the hole is open F12536 Rev A December 2005 8 of 88 MODEL 600 660 1 800 GENERAL REFERENCE MATERIAL CATALOG OF REPLACEMENT PARTS FomNo Manual Bowl Lift ML 19307 33375 VHS d ML 19316 33396 H600 ML 134157 104429 L800C L800 D F 18835 3 94 P660 ML 104386 104388 Power Bowl Lift H600 ML 19311 33377 ML 19317 33397 ML 134160 104425 F 14816 REV A 9 87 F 18797A 3 02 L800 D ML 104245 Form No Model No ML No H600 ML 104241 104242 104383 104384 F 18812 Rev B 12 A d L800 ML 104244 104245 104425 104429 H600 ML 134189 134190 134192 134203 F 34816 Rev B 4 34915 Rev L800 ML 134194 134195 134196 134204 F 18813 Rev B 5 00 P660 ML 104386 104388 F 34818 Rev B 4 03 P660 ML 134198 134199 1342
23. PBL in the pedestal and reinstall the PBL switch 3 Reinstall the Flexa Gear belt and perform FLEXA GEAR BELT ADJUSTMENT 4 Test the PBL mechanism to verify proper operation 5 Reinstall mixer motor and reconnect all leads 6 Replace top cover 7 Check mixer for proper operation Flexa Gear Belt Adjustment NOTE The Flexa Gear belt on the power bowl lift must be adjusted so there is approximately 1 2 deflection at the midway point 1 photo 10282 between the drive pulley and clutch assembly If the Flexa Gear belt is too tight it may wear excessively and be noisy If it is too loose it may come off the pulley or slip WARNING DISCONNECT THE m ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT NS TAGOUT PROCEDURES ap 1 Remove TOP COVER ASSEMBLY 2 Discharge the power bowl lift PBL capacitor 3 Loosen the four PBL gear case mounting bolts 4 Slide the PBL gear case away from the PBL switch until there is approximately 1 2 deflection of the Flexa Gear belt midway between the clutch assembly and drive pulley 1 photo 10282 NOTE If difficulty is encountered in making this adjustment the mixer motor can be removed to gain access to the PBL gear case F12536 Rev A December 2005 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM 5 Apply Loctite 242 or equivalent to threads of gear case mounting bolts and tighten bolts to a torque of 13 17 i
24. R 5 THERMAL OVERLOAD UNIT 96 59 7 Bowl OL 04 30 LIFT o2 10 MOTOR 56 eo BOWL LIFT SWITCH 35 AI 1735 Page 75 of 88 F 12536 Rev A December 2005 MODEL H600 P660 L800 ELECTRICAL OPERATION P660 CONTROL PANEL LAYOUT SINGLE PHASE START TIMER STOP Ba GEAR CONTAC TOR INTERLOCK THERMAL OVERLOAD GUARD RELAY OL HEIGHT THREE PHASE START TIMER STOP GEAR INTERLOCK MOTOR TERM BOARD 12 15 CONTACTOR GUARD y 5 THERMAL OVERLOAD UNIT OL HEIGHT Al 1734 F12536 Rev A December 2005 Page 76 of 88 MODEL H600 P660 L800 ELECTRICAL OPERATION WIRING DIAGRAMS 91 SYMBOL DEFINITIONS CONTACT NORMALLY OPEN N O CONTACT NORMALLY CLOSED N C MOTOR FU FUSE GND GROUND LS LIMIT SWITCH PB PUSH BUTTON STOP N C PB PUSH BUTTON STRRT N O CAP CAPACITOR CON CONTACTOR COIL TMR TIMER isi OL TB FB 1 RC INSEPARABLE CONNECTION SEPARABLE CONNECTION HEAVY LINE DENOTES EXTERNAL WIRING LIGHT LINE DENOTES FIXED PREWIRING PRINTED CIRCUIT WIRING OR OTHER DASHED LINE DENOTES OPTIONAL EQUIPMENT OVERLOAD HEATER ELEMENT TERMINAL BOARD FUSE BOARD TRANSFORMER SNUBBER ASSY Al 1730 Page 77 of 88 F12536 Rev A December 2005 MODEL 600 660 1 800 ELECTRICAL OPERATION H600 L800 Single Phase WARNING
25. Remove chimney before pulling shaft NI NOTE Once the chimney is removed the attachment hub can be removed from the transmission housing by removing the attachment hub screws 3 photo 6563 Refer to 12 ATTACHMENT HUB ASSEMBLY for complete removal procedure 17 Remove chimney 1 photo 6563 to gain access to lower ball bearing of planetary shaft 2 photo 6563 F12536 Rev A December 2005 TWO SCREWS OUT OF VIEW MODEL H600 P660 L800 TRANSMISSION B P660 Install the lower shifting yoke 5 photo 6594 and insert the shifter shaft 3 photo 6594 ASSEMBLY OF TRANSMISSION 1 Thoroughly clean transmission case and reinstall drain plug 2 Check each assembly prior to installation to verify there are no damaged dirty or worn parts 3 If attachment hub assembly was removed install it at this time NOTE The individual parts of the planetary shaft assembly are assembled in the transmission housing 4 Perform PLANETARY SHAFT ASSEMBLY INSTALLATION ASSEMBLY as outlined in this section 8 NOTE The worm gear shaft assembly has a self aligning lower bearing and must be installed carefully to prevent the bearing from cocking in its seat 9 5 Install the worm gear shaft assembly Install the planetary upper gear and key with tall part of hub marked side 2 photo 6594 to the top of machine on th
26. SUPPORT AND LIFT SYSTEM Reassembly of Hobart PBL Motor and Gear Case 1 Install a new oil seal in the gear case housing before reassembling the motor and gear case 2 Position motor on the gear housing using the locating pins so the motor leads are close to the clearance hole CLEARANCE 2 5 L r 4 z LA we da um A OIL SE LOCATING PINS T 3 Install the four mounting bolts and lock washers A Apply a coating of RTV sealant or equivalent across the two bolt heads inside the gear case to prevent leakage of grease onto the motor 4 Reinstall the motor pinion gear and retaining ring Install the internal gear and hub assembly Install the PBL transmission shaft assembly Service PBL transmission gear housing with grease 8 Fl oz 237 ml CHEVRON FM EP NLGI 2 8 Apply a light coating of sealant Permatex or equivalent along the edge of the gear case A Reinstall the top cover aligning it with the locating pins and the ball bearing on the PBL transmission shaft assembly B Tighten hardware 9 Reinstall the drive pulley and retaining ring 10 Reconnect the lead to the PBL switch and replace the switch cover Reinstalling the PBL Unit 1 Check condition of the seal and vibration mounts before installing the PBL into the pedestal Replace components that are worn cracked or otherwise damaged Page 61 of 88 6650 2 Position the
27. between 3 16 to 7 32 2 Tighten lock nut while preventing screw movement 3 Remove the cotter and adjust the screw so total movement of plunger is between 3 16 to 7 32 4 Reinstall cotter pin INSTALLATION 1 Install the shifting yoke s and rod A Verify that the shifting yoke s move freely on the shifting rod 2 Follow GEAR SELECTOR ASSEMBLY INSTALLATION to reinstall the gear selector Perform TRANSMISSION ASSEMBLY Check for proper operation of mixer in all speeds 5 Reinstall TOP COVER MOTOR TECHNICAL NOTES P660 SINGLE PHASE MOTOR SERVICE In May of 1986 P660 mixers became available as a single phase mixer in either 208 240 VAC The motor is a capacitor start motor with two capacitors mounted above the motor The start switch for the motor is located inside the front bearing bracket Replacement of the start switch will require removing the motor from the mixer and the front bearing bracket from the motor START SWITCH SS MESS IX E RIY AN ANN ae X WS k 22 10253 35 88 OIL LEAK CAUTION When installing the new front bearing bracket the weep hole must be located below the motor shaft To prevent damaging the O ring lightly lubricate O ring with transmission oil prior to installing the rotor Issue H600 L800 and P660 mixers built prior to October 4 1989 may experience oil leaking past the
28. damaged C Remove the lower motor mounting bolt Eu LOWER MOUNTING BOLT 12 Remove motor A For H600 and L800 mixers screw a T bar Hobart Tool No TL 58246 1 photo 10260 in the tapped hole in motor housing near junction box when applicable This permits use of a hoist or helper to remove the motor B For P660 single phase mixers install two eye bolts into the bearing brackets 1 Thread chain or rope through eyebolts F12536 Rev A December 2005 su za EYE BOLTS 110261 C Support rear of motor under motor housing or brake assembly and remove the two upper motor mounting bolts 5 photo NOTE For P660 single phase mixers use a pipe through the chain or rope to aid in removing motor BLACK PIPE 1 2 INCH ID MINIMUM X 4 FT LONG SINGLE PHASE P660 MOTOR D Carefully work the motor out of transmission housing and remove it from the pedestal Page 38 of 88 MODEL H600 P660 L800 MOTOR DISASSEMBLY OF MOTOR 1 Prevent brake drum from moving then remove the lock nut on motors equipped with a brake assembly and slide the brake drum off motor shaft brake not 660 A Remove the brake mounting bracket assembly 2 Remove retaining ring and ventilating fan if present BRAKE MOUNTING BRACKET ASSEMBLY CAUTION Be sure to support the shaft when removing roll pin holding worm and oil
29. flinger in place so as not to damage motor bearings 3 Drive the pin out of the shaft 1 photo 10265 and remove the drive worm NOTE The L 800 drive worm is cut on the shaft 4 Drive the pin from the oil flinger and hub assembly 2 photo 10265 Remove the assembly Page 39 of 88 5 Usea punch to make alignment marks on motor housing and both bearing brackets motor end caps MOTOR ALIGNMENT MARKS NOTE On motors equipped with a starting switch Fig 46 disconnect all wires from the switch before removing the rear bearing bracket 6 Remove bearing brackets from motor housing 7 Carefully remove the rotor and fan assembly from the stator ROTOR AND gp Ew FAN ASSEMBLY UM STATOR eee __ S 8 Mark a face of the stator before removal as it must be reassembled facing the same direction F12536 Rev A December 2005 MODEL H600 P660 L800 MOTOR 9 Remove the stator from the housing being careful not to damage the windings 10 Inspect motor bearings and replace if necessary SERVICING SINGLE PHASE STARTING COMPONENTS NOTE Single phase motors have a starting circuit consisting of two start capacitors centrifugal switch and start windings The start windings assure rotation in the proper direction and the capacitors provide extra torque to bring the motor up to speed As the motor RPM increases to near its running speed the start w
30. is intended only as a general guide for analyzing trouble problems and does not attempt to list all possible sources of noise oil leakage or malfunctions MECHANICAL TROUBLESHOOTING Symptom Possible Causes Noise in transmission or planetary or damaged gears Improperly meshed gears Worn or broken key s Worn bearing Lack of lubrication Planetary does not turn in any speed Pin sheared on drive worm on motor shaft Key sheared on shock absorber compressor on worm gear shaft Key sheared on clutch shaft upper gear P660s only Key sheared on planetary shaft upper planetary shaft gear Planetary does not turn 1 and 274 1 Key sheared on upper gear of planetary shaft speeds H600 L800 Planetary does not turn in 3 and 4 Key sheared on lower gear of planetary shaft speeds H600 L800 Planetary does not turn in 2 and 4 1 Key sheared on upper gear of worm gear shaft speeds H600 L800 Planetary does not turn in 1 and 3 Key sheared on lower gear of worm gear shaft speeds H600 L800 Agitator will not turn 1 Key sheared on pinion gear on agitator shaft Attachment drive does not turn P660 1 Key sheared on attachment drive single Key sheared on clutch shaft lower gear assembly Difficulty in shifting Clutch binding on clutch shaft Refer to REASSEMBLY OF CLUTCH SHAFT Yokes binding on shifter shaft O ring on gear selector assembly breaking down Oil deposits co
31. mixing load 7 Operate the PBL switch raise and lower Record meter reading for each direction of travel A Refer to the table for approximate ampere values POWER BOWL LIFT MOTOR CURRENT AMPERES Voltage 200 VAC 230 VAC 2 65 NOTE Continuous currents above the rated current and intermittent overload currents greater than 2096 of rated current indicate an overload Page 64 of 88 MODEL 600 660 1 800 TIMER AND SWITCH PLATE TIMER AND SWITCH PLATE TECHNICAL NOTES H600 L800 Switch Plate Gasket In July 1985 the switch plate gasket was changed to a thicker material in order to eliminate washers spacers between the START and STOP switches and switch plate Switch plates with thin gaskets require a washer on each mounting screw between the switch and switch plate Failure to install the washers may result in the switches sticking If the switch plate gasket is made of thick material the gasket acts as the spacer between the switch and switch plate The washers may be used but are not required Refer to the illustration to identify which gasket is present on the mixer being serviced THIN GASKET THICK GASKET WASHERS REQUIRED 10285 Electronic Timer The electronic timer became available as an option in October 1994 The timer can be programmed for two preset recipes Each recipe has four time cycles An upgrade kit is available to add the electronic timer to previously b
32. o De Ra DOS HOP RH A RC P eb IO V e aod 45 Electrical Connections 47 Testing Motor Stator Windings Soupe 47 SINGlS c 47 Three PASE 2552 S 49 Testing Motor Current 2 52 22 penc dene pap d EEE PEPE pda Peay EORR 50 Testing Gapacitors i y Sb Up Ie Ie eode deti ees 50 BOWL SUPPORT AND LIFT SYSTEM iuret tite te e doce e e Re ae 51 Technical Notes 5 velox IER bet e aci peas We Qa pereat a etta 51 Bowl Support Lie Erb eds edv Ere Mead pee bene RE B 51 Removal C ra 51 Istalla 51 Slideway Clearance 1 51 Bowl Lift Nut Assembly Adjustment 2 52 Bowl Clamp Adjustment cx xus RIDE pe tm or ende E E eder 52 Bowl to Beater Clearance efi seit ero tte a fate M Rie Rie RULES GTP fie 53 Adjustment Adjusting Screw Located Under Bowl Support 53 Adjustment Stop Screw Located on Left Side of Lift Screw
33. of adjustment operation Brake switch S1 shorted Refer to wiring diagram located on mixer Power bowl lift PBL does not operate Fuse 3FU and or 4FU blown If fuse blows again after replacing H600 L800 check the PBL motor and capacitor Refer to TESTING MOTOR CURRENT and TESTING CAPACITOR PBL switch 3S shorted PBL capacitor open Refer to TESTING CAPACITOR PBL motor windings open Refer to TESTING MOTOR FIELD WINDINGS Flexa Gear belt broken or slipping Bowl support travels in reverse of PBL NOTE Discharge capacitor before removing leads switch 3S indicated position H600 L800 Leads from PBL motor to capacitor reversed Interchange red and yellow leads on capacitor terminals ELECTRONIC TIMER Symptom Possible Causes No display Mixer works properly 2 Display board malfunction otherwise No display Nothing works Check input voltage to timer 1 Correct voltage present Main board assembly malfunction 2 Voltage incorrect Correct voltage problem Mixer runs after countdown time is Check output of main board assembly finished 1 Output present A Is there voltage at 1FB P2 to 1P 7 1 Yes Main board assembly malfunction 2 No output present A Check mixer contactor for mechanical bind etc No Buzzer 1 Buzzer malfunction 2 Main board assembly malfunction Knob turns but time does not change Potentiometer shaft seal needs to be lubricated 1 2 Main board
34. spring in the recess in bearing bracket 4 Position stator so laminations fit squarely into the seat The stator must be located such that the four weld beads across laminations fit into any of the four recesses in bearing bracket 5 Center the lead wires between any two of the four ears on the bracket so the wires will not be bent sharply coming out of rear bearing bracket when motor is assembled Weld bead across laminations must fit into recesses in the bearing bracket Page 41 of 88 6 Using a piece of wood or rubber mallet placed against the laminations use a hammer to seat stator into bracket Exercise caution so not to damage laminations or windings 7 Install rotor assembly A Place rear bearing bracket opposite drive end on rotor shaft Thread lead wires through one of the holes The weld beads should fit into four of the recesses in the bracket 8 Install the four bearing bracket bolts and lock washers Tighten hardware in a sequence of 1 3 2 4 as shown so stator seats squarely Tighten bolts progressively to torque of 108 in Ib 9 ft Ib 5262 9 Perform SHAFT ALIGNMENT ROTOR SHAFT ALIGNMENT NOTE Anytime an exposed iron motor is removed for service or if a new motor is to be installed the rotor shaft alignment must be checked and shims added to the mounting ears as required before installation Incorrect alignment will cause improper mesh of th
35. when installing 12 ATTACHMENT HUB ASSEMBLY CHANGES For mixers produced June 1997 and newer and current replacement parts the bevel pinion and gear are marked with the letters MA The current replacement parts should not be intermixed with previous design parts SERVICE INFORMATION NOTE H600 mixers up to Serial No 31 1074 648 with 12 attachment hubs may leak oil from the attachment hub drain hole The cause is the front needle bearing in the hub assembly has been pressed in too far at the factory blocking the oil return cavity and oil discharge hole With these blocked oil cannot drain back into the transmission case but instead collects in the bearing area around the square drive shaft and eventually drains out into the hub and then out the drain hole The front needle bearing position can be checked by removing the square drive sleeve Shine a light into the hub front opening while looking up into the hub drain hole and locate the edge of the needle bearing It should not be blocking the oil return cavity Refer to ATTACHMENT HUB ASSEMBLY INSTALLATION as outlined in this section ky WARNING DISCONNECT THE eS x ELECTRICAL POWER TO THE 2 2 MACHINE AND FOLLOW LOCKOUT PROCEDURES NOTE The attachment hub assembly contains square drive with a special shear key The special shear key can be replaced from the outside of the mixer through the attachment socket without disassembling t
36. 00 TOOLS Shaft Alignment Tool Part No TL 82901 Use for alignment of motor Two 5 16 x3 1 4 Eye bolt P660 single phase motor removal One 4 of 1 0 Machine twist chain or 6 3 8 Nylon rope P660 single phase motor removal Four foot 1 2 diameter pipe or 2x4 lumber P660 single phase motor removal Page 9 of 88 F12536 Rev A December 2005 MODEL 600 660 1800 BOWL GUARD BOWL GUARD TECHNICAL NOTES A bowl guard was added to H600 L800 and P660 mixers beginning with ML 104241 and higher A kit exists to add a bowl guard to early mixers It is recommended to install a bowl guard on mixers that were built prior to the ML number listed above When installed and working properly the bowl guard will prevent the mixer from operating unless the wire cage of the bowl guard is fully closed Two styles of bowl guard assembly have been used The old style bowl guard assembly can be identified by a latch and a saddle with a slot used to secure the wire cage in the center closed position and a release knob to open the wire cage The new style bowl guard assembly uses a pin mounted on the splash guard to provide a positive stop in order to align the wire cage in the closed position at the end of travel NEW STYLE WIRE CAGE WARNING DISCONNECT THE ELECTRICAL POWER TO THE E S MACHINE AND FOLLOW LOCKOUT 55 TAGOUT PROCEDURES Old Style 1 Lower bowl support
37. 00 PLANETARY CONVEYING 8 GEAR HUB PIN Assembly 1 Install conveying gear hub side down onto oil pump shaft Secure by driving pin into position 2 Reinstall slotted and non slotted oil pump gears into housing and tube assembly Slotted gear is to be positioned over thru hole in housing and tube assembly with slotted surface visible 3 Reinstall oil pump shaft into housing and tube assembly Allow shaft to pass through slotted gear 4 Reinstall pin into oil shaft Pull conveying gear away from housing and tube assembly to seat pin into slotted gear NOTE Different size screws are used on the oil pump to assure correct installation of bottom plate onto housing and tube assembly 5 Reinstall oil pump bottom plate and secure with one 8 32 and one 10 32 screws 10 32 HOLE 10293 6 Reinstall pump into planetary and secure with screws F12536 Rev A December 2005 PLANETARY OIL SHIELD NOTE The planetary oil shield 1 photo 6582 keeps oil from being sprayed onto the planetary shaft at high speed from the pump conveying gear Be sure to replace shield if it is removed Install oil shield with opening facing away from conveying gear 25 INTERNAL GEAR Removal 1 Perform PLANETARY ASSEMBLY REMOVAL as outlined in this section 2 Loosen but do not remove the internal gear mounting bolts 1 photo 6583 3 Using
38. 067 for the latest lubrication requirements LUBRICATION CHART Quantity Mobile Gear 634 128 FI oz Planetary and Internal Gears Exxon Spartan EP150 Chevron FM EP NLGI 2 Planetary WetrBeamgs J 1 Applies to mixers equipped with a planetary oil pump 2 Applies to mixers built without a planetary oil pump Original lubricant was Marfak 0 For compatibility reasons remove at least 90 of the previous lubricant before installing current lubricant Page 5 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 GENERAL Transmission NOTE The oil level should not be below the oil level gauge line printed on sight glass while the mixer is off Change the oil every three years or more frequently with heavy usage OIL BELOW INDICATOR LIN ADD OIL TO TRANSMISSION 55 E Denm qun 6565 EXAMPLE OF LOW OIL LEVEL CAUTION Overfilling transmission case may result in oil leakage 1 Drain the oil A B C Remove splash guard if present Remove top cover Place a large pan under drain plug to catch old oil Remove drain plug from transmission case and drain oil E TRANSMISSION OIL DRAIN PLUG Replace drain plug NOTE The fill plug also acts as an airway for the transmission case for venting Verify that fill plug is open If the fill plug becomes clogged transmission oil will leak out around the seals and or ga
39. 1 Beginning from the idle display state press P1 or P2 to display the 1 preset mixing time s EE R coNTROLLER ae SAVE KEY Es SO CLEAR INDICATOR 4 tC 2 de 1 1728 EXAMPLE An illuminated LED above P1 and 1 in timer display indicates the first preset time contained in P1 A Ifthe same preset key P1 or P2 is pressed again the next preset time will be displayed Continually pressing the P1 or P2 key will advance thru the remaining preset settings 2 the KNOB to change the time for the indicated preset time 3 Press SAVE key to retain the revised times and return to the idle display A If more preset times are to be revised advance to the desired preset enter the new time and press SAVE Repeat as necessary until required times are entered NOTE Pressing CLEAR key will retain saved time and return timer to the idle display 4 Press START to begin mixing The timer will countdown from the set time to 00 00 1 A Pressing STOP will suspend the mixing and timer countdown Page 67 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 TIMER AND SWITCH PLATE 1 Press START to resume both mixing and timer countdown 2 Press CLEAR to return to idle display B When timer reaches 00 00 1 The mixer stops beep tone sounds for two seconds 3 The next preset mixing time displays
40. 1 64 End Play 6637 Installation NOTE If the handwheel bracket bearing assembly and handwheel bracket clamping ring are not being replaced install the handwheel bracket assembly in reverse order of removal However if the handwheel bracket bearing assembly and the handwheel bracket clamping ring are being replaced additional steps are required to properly align these two parts The replacement handwheel bracket bearing assembly 2 Fig 6638 is not drilled with the two holes 1 Fig 6638 for the roll pins The replacement handwheel bracket bearing assembly and the handwheel bracket clamping ring 3 Fig 6638 are to be drilled after the parts are assembled into the mixer 1 Install the replacement handwheel bracket bearing assembly 2 Fig 6638 and the handwheel bracket clamping ring 3 Fig 6638 as they would normally be installed 2 Align the two roll pin holes 4 Fig 6638 in the handwheel bracket clamping ring with the existing holes in the mixer column Tighten the four mounting bolts 4 Using the 15 64 holes 4 Fig 6638 in the handwheel bracket clamping ring 3 Fig 6638 as guides drill two 1 4 holes thru the handwheel bracket clamping ring and the handwheel bracket bearing assembly 6638 Page 56 of 88 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM 5 Install the two roll pins in the previously drilled holes 6 Complete installation of remaining parts in reverse order of
41. 2 200 60 1 1 1 2 2 1 1 2 2 208 60 1 1 1 2 2 1 2 230 60 1 11 2 2 1 1 2 2 240 60 1 2 1 2 200 230 60 1 1 200 60 3 1 1 2 2 2 208 60 3 2 220 60 3 3 4 230 60 3 1 1 2 2 2 440 60 3 3 4 460 60 3 1 2 1 1 1 2 2 1 1 2 2 550 60 3 1 1 2 200 208 60 3 1 1 2 200 230 60 3 3 4 1 208 240 60 3 2 1 2 220 230 60 3 1 1 2 380 400 60 3 1 380 440 60 3 1 1 2 550 575 60 3 F12536 Rev A December 2005 Page 4 of MODEL 600 660 1 800 GENERAL OPERATING SPEEDS RPM H600 L800 P660 P660 SBA SPEED ATTACHMENT AGITATOR ATTACHMENT AGITATOR ATTACHMENT AGITATOR ATTACHMENT First 70 79 60 68 56 175 78 294 Second 124 139 106 119 Third 206 232 177 199 Fourth 362 408 311 H600 L800 P660 Height 55 7 8 55 7 8 55 7 8 Width 27 1 2 27 1 2 27 1 2 Length 39 1 4 41 1 2 39 1 4 Net Weight Lbs 853 675 875 675 Net Wt w Power Bowl Lift Lbs Represents weight of H600 D and L800 D mixers LUBRICATION 878 700 900 700 WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES NOTE Lubricants listed are those specified at time of printing this manual Refer to the current revision of Lubrication Manual F 20
42. 600 NOTE The function of the clutch shaft in the single speed mixer is to simply transfer power from the worm shaft to the planetary shaft 1 Remove top spacer 2 Remove upper pinion assembly and key 3 Remove gear clutch spacer attachment drive gear and key 4 Remove lower retaining ring ball bearing and washer 5 Removeretaining ring washer lower clutch and upper gear assembly SPACER PINION SPACER P A 12 CLUTCH SHAFT 4 SPACER ATTACHMENT DRIVE GEAR KEY CLUTCH SHAFT KEY LOWER GEAR RETAINING RING 6600 P660 SINGLE SPEED CLUTCH SHAFT ASSY CAUTION Spacer Fig 6600 is stepped inside area raised and must be installed toward the upper gear If not installed properly damage to the clutch shaft could occur ASSEMBLY Models H600 L800 NOTE All gears on the clutch shaft assembly must be free to turn on the shaft and the clutches should slide freely up and down on the splines Should a clutch seem to bind take it off and turn it to a new position on the spline Check movement again F12536 Rev A December 2005 Model H600 1 Reassemble parts in reverse order of removal Model L800 CAUTION If the angular contact ball bearing on model L800 is installed incorrectly it will separate and result in premature bearing failure NOTE The lower bearing must be installed to take downward thrust The angular bearing must be insta
43. DURES 1 Remove TOP COVER 2 Lower bowl support to its lowest position 3 Remove the pin from the handwheel hub and slide the handwheel off the shaft 4 Remove the screws from the handwheel bracket clamping ring and carefully pry the clamping ring free from the pedestal CLAMPING RING 5 Reach inside the pedestal under the motor and remove the handwheel bracket assembly from the mixer Be careful not to damage mixer finish Disassembly 1 Remove bowl lift miter pinion 2 photo 6635 A Remove the stop nut 1 photo 6635 and slide miter pinion off the handwheel shaft B Remove the handwheel shaft 3 photo 6635 F12536 Rev A December 2005 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM lt gt 663 2 Remove the bottom retaining ring from the miter gear shaft 1 photo 6636 and remove the shaft from the handwheel bracket A Slide the bowl lift miter gear bowl lift gear and space off the shaft Assembly NOTE A new spacer 2 photo 6636 may be necessary when replacing either of the gears or bearing to obtain the gear spacing as shown in Fig 6637 1 Reassemble parts removed in reverse order of removal 2 Check gear spacing of miter gears Proper end play is 1 64 F12536 Rev A December 2005 Teeth Should Match Side to Side As Shown 0 Shimmed When Shaft Has
44. EARING gt ie UPPER GEAR z mit jak RETAINING RING gt 59 ER SPACER da LOWER GEAR psc m SPIRAL BEVEL a 27 ANA SPACER 7 6597 ORIGINAL P660 PLANETARY SHAFT ASSEMBLY SHIM BEARING TOP GEAR L KEY SPACER SPACER N QUAD O RING SPIRAL SS j LOWER GEAR BEVEL 74 SPACER PLANETARY SHAFT BEARING NOTE INSTALL SO CHAMFER MATES WITH RADIUS OF SHAFT 6614 CURRENT P660 PLANETARY SHAFT ASSEMBLY 8 Extract the lower bearing 5 photo 6610 from its seat in the transmission housing 2 photo 6611 F12536 Rev A December 2005 9 Remove the retaining ring if present P660 only 10 Remove the spacer INSTALLATION ASSEMBLY Models H600 L800 1 Place the lower bearing in its seat in the transmission housing 2 photo 6611 2 Install chimney A Formixers using a metal chimney place a light coat of Permatex 2 or equivalent on both sides of the chimney gasket Install the chimney gasket and chimney into the transmission housing B For mixers using a plastic chimney inspect the O ring for damage If damaged replace the O ring then install chimney into the transmission housing Install planetary shaft Inspect condition of O ring seal on the spiral bevel gear Replace if nicked or otherwise damaged O RING 6612 5 Slide the lower gear and spiral beve
45. GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND OR OTHER LOCAL POWER BOWL LIFT ELECTRICAL CODES SWITCH POSITIONS E R jr Sn oS EUST 5 6 21 T FD 10 02 10 2 1 2 las 4FU ag 13 4 2 BOWL sa a4 30 152 r e Or et LIFT 5 5 5 5 AMOTOR SERVICE HH 4 Lo ni CONNECTION Gon L1 L2 L3 60HZ HIGH 1FB H1 60HZ LOW VOLTAGE VOLTAGE IBI CONNECT ON CONNECT ON 1FU 2 0A 2FU 2 0A 1FB H3 1FB H2 BK W Q A TRANSFORMER CONNECT IONS VOLTS CONNECT WHEN TRANSFORMER 15 NOT USED H3 TO L1 CONNECT WIRE 1FB P1 TO CON L 1 200 230 leo H2 TO L2 CONNECT WIRE 1FB P2 CON L2 400 460 60 TO H2 QU E um as 5 Q 515 NO SPLICE SPLICE HEIGHT a TIMER CONTACTS TMR R 7 LOCK 2PB START 1 aja STOP NC 2LS OL c GUARD OPTIONAL POWER BOWL LIFT AVAILABLE LS NC Pt C 3 SV bO ONLY ON 200 230 VOLT MACHINES r BOWL LOCK NOT AVAILABLE WITH POWER BOWL LIFT NO C NO 2 n R i H 600 L 800 2 1 3 4 8 200 230 400 460 60HZ THREE PHASE PER MS n DERIVED FROM 18821 CONTROL HOBART L 4 AI 1731
46. H600 and L800 mixers are designed primarily to mix food products however they are often used for various industrial applications A standard attachment hub provides versatility of operations through use of optional attachments and accessories On H600 and L800 mixers the attachment hub and planetary shaft are driven by the four speed transmission The model L800TH Tim Horton s varies from the standard L800 slightly The differences are listed below The mixer comes with a bolt on bowl adapter set up to Ashield mounted on the inside of the pedestal accept only 60 quart bowls and accessories protects wiring from the fan blades The motor has a cooling fan mounted on the motor shaft Usage of an enhanced overload relay that can be identified by a red reset button The Itis built as a 200V 60HZ 3Ph only standard L800 has a green button A timer and brake are available as an option on the H600 but are standard equipment on the L800 The Hobart P660 is a heavy duty mixer available as a single or two speed mixer Standard equipment on the P660 includes a 12 attachment hub and a 15 minute timer A manual bowl lift is standard on H600 L800 P660 mixers A power bowl lift was available as an option on H600 and L800 mixers only SPECIFICATIONS ELECTRICAL SPECIFICATIONS MOTOR RATINGS Voltage Hz Phase Bene ope Horsepower Horsepower Horsepower 115 60 1 1 1 1 2
47. ION EIE een et t reb o em 73 Component Function semp EPA RO n ORA 73 Sequence of Operation sisa she a de dui Dog P dide OR dapat ke BodL A dote diete ds 74 Control Panel Layout 75 Winna Diada sira ccm Fee ende Pa ERR E pd ecu pce 77 H600 E800 Single Phase oo Rees sea II SC IIS v I 78 H600 7 E800 Three Plhiase issue ob sable er De dana ROT prete duets T 79 P660 Single Phase wi ded pde e d nce led Bod he ed d 80 P660 Three Ph se ie isse eot ue dox detur Rod ee Ol ied dre abet Weed dana 81 TROUBLESHOOTING Ee Rp WANN ETE S 84 modo RC 84 Mechanical 86 Electrical Troubleshooting 87 Electronic Lm s dci io ELE o ERR DRE male 88 Hobart 2005 Page of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 GENERAL GENERAL INTRODUCTION The Hobart
48. MODEL 600 660 1800 BOWL GUARD BOWL GUARD SWITCH NOTE There have been two types of bowl guard Switch used on mixers equipped with a bowl guard assembly Old style bowl guard reed switches are enclosed within a rectangular shaped housing and have a pivoting plastic paddle that contacts the splash guard of the bowl guard assembly for switch actuation purposes The new style bowl guard reed Switch is encapsulated in a metal tube that is then inserted into a cylinder shaped housing The tubular designed reed switch is positioned within close proximity to the splash guard and is activated by the opening and closing of the wire cage by a magnet that is attached to the wire cage WARNING DISCONNECT THE m ELECTRICAL POWER TO THE 2 7 MACHINE AND FOLLOW LOCKOUT SS TAGOUT PROCEDURES DE Old Style 1 Remove BOWL GUARD ASSEMBLY 2 Remove TOP COVER A Disconnect bowl guard switch lead wires from overload OL C and contactor CON C1 B Clip any wires ties securing bowl guard switch wires C Remove bowl guard wires from P Clip 3 Remove screw and lock nut securing reed switch to bowl guard housing BOWL GUARD HOUSING REED SWITCH 4 Pull reed switch wiring partially from bowl guard housing A one of the reed switch wires to aid in pulling new reed switch wiring into pedestal B Remove reed switch from mixer F12536 Rev A December 2005 NOTE If bowl guard housing i
49. N TECHNICAL NOTES Refer to the beginning of CLUTCH SHAFT ASSEMBLY PLANETARY SHAFT ASSEMBLY and 12 ATTACHMENT ASSEMBLY for important changes that have occurred throughout the production period Additional service information pertaining to oil leaking from the attachment hub is discussed in 12 ATTACHMENT ASSEMBLY DISASSEMBLY OF TRANSMISSION WARNING DISCONNECT THE ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES 7 i SS GS 1 Remove TOP COVER ASSEMBLY NOTE Before proceeding discharge the capacitor on mixers equipped with a power bowl lift 2 Remove PLANETARY ASSEMBLY as outlined in PLANETARY 3 Remove planetary key and washer Page 19 of 88 4 Drain transmission oil by removing drain plug TRANSMISSION OIL DRAIN PLUG 5 Remove the worm shaft and planetary shaft bearing retainer covers 1 photo 6585 F12536 Rev A December 2005 MODEL 600 660 1 800 TRANSMISSION 6 Bend down the tabs on the worm shaft planetary shaft lock washers 1 photo 6586 Remove special bearing locknuts and washers 9 Ontimer equipped mixers remove the microswitch 1 photo 6589 located above cam of speed selector 10 Remove speed selector shifter assembly 2 photo 6589 CAUTION Use care when prying cover off transmission case Do not pinch or cut wires with pry tool 7 Remove the bolts and l
50. N if necessary Check mixer for proper operation Reinstall top cover REPLACEMENT OF ENCLOSED IRON SINGLE VOLTAGE MOTOR EXPOSED IRON MOTOR H600 amp L800 ONLY WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT x9 PROCEDURES Remove top cover 2 Remove motor as outlined under MOTOR REMOVAL 3 Before installing the replacement motor whether new or repaired perform SHAFT ALIGNMENT 4 Assemble the terminal board capacitor brackets and hardware as shown Install the two short leads on capacitor Install capacitor cap and capacitor into the capacitor holder Capacitor and terminal board assembly should look as shown Page 43 of 88 5257 7 Remove the left rear top cover support bolt NOTE When installing the capacitor and terminal board assembly to mixer make certain that it is clear of any moving motor parts and is positioned such that the top cover will clear it when reinstalled As required rotate the bottom portion capacitor of assembly to achieve desired clearance 8 Secure capacitor and terminal board assembly and the top cover support to the gusset with nuts screws and lock washers 56 1 CAPACITOR AND 4 TERMINAL BOARD ASSEMBLY 9 Connect the motor and capacitor leads to the terminal board using the appropriate section of the motor terminal b
51. NG MOTOR FIELD WINDINGS Mixer motor will not run when START Bowl guard not closed or magnet missing Bowl guard reed switch circuit malfunction 1 2 3 Timer set on zero 0 position 4 Gear shift switch 53 contacts open Verify gear shift is on a numbered position 5 Incorrect or no supply power to mixer 6 Fuse F1 blown If fuse F1 blows again after replacing check for shorts or overloads in control circuit 7 Transformer open 8 Mixer motor over heated Refer to TESTING MOTOR CURRENT 9 Motor overloads open 10 START switch S2 malfunction 11 Contactor coil CON malfunction 12 STOP switch S1 malfunction Mixer motor runs only while START Bowl support not up fully depressed Bowl height switch malfunction Timer switch malfunction CON auxiliary switch malfunction Mixer motor shuts off during Operation Motor over heating Refer to TESTING MOTOR CURRENT Overload heater s malfunction Brake does not function when STOP Brake spring disconnected or broken 8 depressed Brake out of adjustment Brake solenoid coil open Brake band does not fit profile of brake drum Brake switch S1 not operating properly Refer to wiring diagram located on mixer 87 of 88 F12536 Rev A December 2005 MODEL 600 660 1 800 TROUBLESHOOTING ELECTRICAL TROUBLESHOOTING Symptom Possible Causes Brake remains on during mixing Brake out
52. Rev A December 2005 MODEL 600 660 1800 BOWL SUPPORT AND LIFT SYSTEM Disassembling the Hobart PBL Motor NOTE The Hobart PBL motor is no longer available Some of the PBL equipped mixers produced with the Hobart PBL motor may have been converted to a General Electric or Howell Electric motor using an adapter Servicing these motors will vary slightly from this procedure and will depend on motor manufacturer 1 Use a center punch to make alignment marks 2 _ 6644 5 Lift out the internal gear and hub assembly A Remove the socket head screws 1 photo 6645 and remove the hub from the internal gear 6 Remove the motor pinion retaining ring gear and key 2 photo 6645 Remove the grease from the gear case Remove the motor mounting bolts 3 photo 6645 and lock washers 1 ALIGNMENT MARKS 2 Remove the bearing brackets from the stator assembly 9 Carefully pry the gear case housing off the locating pins on the PBL motor 10 Remove the oil seal from the gear case housing CLEARANCE LOCATING PINS E 4 Using a gear puller remove the ball bearings woo D 1 photo 6649 3 Remove the rotor assembly from the stator 5 Reassemble parts removed in reverse order observing alignment marks on bearing brackets F12536 Rev A December 2005 60 of 88 MODEL 600 660 1800 BOWL
53. SCONNECT POWER AND FOLLOW LOCKOUT TAGOUT PROCEDURES ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 1 Disconnect power to mixer 2 Remove top cover 3 Locate the incoming voltage service leads to motor either at contactor or overloads NOTE Three phase dual voltage motors have two leads connected to each incoming voltage lead Make sure to clamp over the incoming lead A Clamp AC ammeter around one of the incoming leads B Setammeter to highest scale usually 300 amps NOTE It may be necessary to adjust ammeter scale to achieve a more accurate reading 4 Start mixer and take amperage reading from meter NOTE Should the motor overload protectors be open because of an overloaded motor wait until overload thermal elements cool down before starting motor A Refer to the table for ampere ratings for the mixer being serviced NOTE Intermittent short duration overload currents no greater than 2096 of the rated current are acceptable However continuous currents above the rated current or intermittent overload currents greater than 2096 of the rated current indicate an overloaded motor MOTOR CURRENTS AMPERES M HP Single Phase Three Phase 200 VAC 230 VAC 460 VAC sac ssa C Seta digital meter to read resistance ohms If possible select the R x 1000 range WARNING DISCONNECT THE ELECTRICAL POWER TO THE D Place meter leads across the two capacitor S MACHINE AND FOLLOW LOCKOUT terminals while
54. SSEMBLY 7 Check bowl guard switch actuation and mixer 4 Disconnect bowl guard switch wiring from wiring for proper operation harness Adjustment New Style Bowl Guard Switch A With meter set to measure resistance 1 Begin with end of reed switch 1 16 away from B Ipads acrossioads or iged splash guard 1 With wire cage closed meter should A Loosen set screw in tubing of reed switch indieate a closed circuit housing NOTE If meter indicates an open reed switch regardless of wire cage position check to see if magnet is present on wire cage B Move reed switch to obtain 1 16 clearance SET SCREW 5 Slowly open wire cage Reed switch contacts should open as wire cage moves away from closed position maximum 1 4 movement before switch contacts open allowed A Raise or lower reed switch inside bowl guard switch housing as necessary until correct bowl guard switch operation is achieved B Tighten bowl guard assembly set screw REED SWITCH 6 Connect bowl guard reed switch wiring to mixer wiring harness C Tighten set screw 7 Reinstall switch plate 2 Close wire cage fully 8 Check bowl guard switch and mixer for proper 3 Remove the start stop switch plate from mixer COVER ASSEMBLY Removal WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove the two screws an
55. T ASSEMBLY VERTICAL ADJUSTMENT 20 Service the transmission with oil NOTE Inspect the condition of the planetary shaft and worm gear shaft locking washers Make sure that inner lock tab of washer is present and in good condition Replace if necessary 21 Install the planetary shaft and worm gear shaft locking washers and special bearing locknuts A Tighten special bearing locknuts Page 23 of 88 22 23 24 B Bend tab s of locking washer more than one if possible into notch es of special bearing locknut Reinstall planetary shaft and worm gear shaft bearing retainer covers Check mixer for proper operation in all speeds Reinstall top cover WORM GEAR SHAFT ASSEMBLY Disassembly NOTE Refer to Fig 6564 m co WORM GEAR SHAFT ASSEMBLY WASHE SPRING f SHOCK p COMPRESSOR iL SHOCK ABSORBER DRIVE FLANGE 5 WORM GEARS T ii ag D 6 KEY gi UPPER LOWER LOWER BALL BEARING LOCKWASHER mA LOWER LOCKNUT 6564 Disassemble TRANSMISSION as outlined in this section to access worm gear shaft assembly Remove lower lock nut and washer Remove lower ball bearing Remove lower gear and key Remove spacer upper gear and key F12536 Rev A December 2005 MODEL 600 660 1 800 TRANSMISSION VERTICAL ADJUSTMENT 1 Remove the two set screws that lock the adjusting sleeve into place
56. TE Lubricate internal threads of bowl lift nut with Lubriplate 630AA before reassembly 1 Reinstall parts removed in reverse order Do not install pedestal apron 2 Perform SLIDEWAY ADJUSTMENT as outlined in this section 3 Reinstall pedestal apron Slideway Clearance Adjustment NOTE The left hand slideway is dowel pinned into position and cannot be adjusted NOTE Clearance between slideways and bowl support should be held to a minimum without causing binding 1 Remove bowl and agitator 2 Remove pedestal apron 3 Raise bowl support to its top position and remove the paint from the heads of the three bottom screws on the right hand slideway 1 Fig 6626 4 Slightly loosen all socket head screws that hold the right hand slideway to the pedestal F12536 Rev A December 2005 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM NOTE Hold a rag against slideway to protect the finish 5 slideway with a lead hammer until it is snug against bowl support Tighten the top slideway screw Lower bowl support until it is approximately 1 1 2 from its bottom position A the bottom of slideway in toward support B Tighten bottom slideway screw 8 Run bowl support up and down to check for binding Re adjust if necessary 9 Tighten remaining slideway screws when adjustment is correct 10 Verify slideway adjustment by running bowl support up and down checking for binding Re
57. a lead mallet tap the outside of internal gear to loosen gear from transmission housing 4 Supporting the internal gear remove the mounting bolts and lock washers Remove internal gear Installation 1 Thoroughly clean internal gear and gear seat in the bottom of transmission housing 2 Coat top surface of internal gear with Permatex 2 or equivalent Page 18 of 88 MODEL 600 660 1 800 TRANSMISSION 3 M Place internal gear in position and loosely secure with mounting bolts and lock washers Make sure the tapped bowl guard mounting holes are positioned as shown TO FRONT OF AS VIEWED FROM BOTTOM OF TRANSMISSION CASE 8337 4 Alternate the tightening of all mounting bolts while tapping the internal gear with a lead mallet to assure proper seating 5 Perform PLANETARY INSTALLATION as outlined in this section PLANETARY INSTALLATION CAUTION Exercise care when reinstalling planetary on mixer carefully mesh fiber conveying gear of the oil pump with the internal gear to prevent damage to the fiber gear 1 If planetary oil pump is not present apply 4 oz Chevron FM EP NLGI 2 to the internal pinion gear and the internal gear on the planetary 2 Install planetary assembly in reverse order of removal 3 pump is present in planetary assembly fill planetary with oil 6 Fl oz EXXON SPARTAN EP150 after planetary assembly is installed TRANSMISSIO
58. ance Check the centrifugal switch contacts 1 Fig Al 1736 on H600 and L800 mixers and the starting switch 5 Fig Al 1736 on P660 mixers A stationary part of starting switch 2 Fig Al 1736 is located in the rear bearing bracket B Ifthe contacts 1 Fig Al 1736 are pitted or burnt replace the stationary part Check the rotating part of centrifugal switch A Thecentrifugal weights 3 Fig Al 1736 should be free to move their full amount of travel without binding B The Bakelite sleeve 4 Fig Al 1736 should slide freely on the rotor shaft and not be cracked P660 H600 amp L800 FRONT OF MOTOR BACK OF MOTOR Al 1736 Replacing the rotating part of switch A Mark location of rotating part on rotor shaft with a scribe B Remove rotating part from rotor shaft with a bearing puller C Using a drive sleeve press the new rotating part on rotor shaft and align it accurately to scribed mark To check motor field windings refer to TESTING MOTOR STATOR WINDINGS MODEL 600 660 1 800 MOTOR REASSEMBLY OF MOTOR NOTE Be sure the stator is facing the same direction as when removed 1 Verify that the oil drain hole 1 photo 10270 is open 2 Check the O ring seal 2 photo 10270 Replace if damaged 3 Place front bearing bracket on blocks on a work surface and place the pre loading
59. assemble parts removed in reverse order KEYPAD TEST WARNING DISCONNECT THE R v ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES 1 Disconnect keypad connector 2 Set meter to measure resistance A Check continuity of key switches Refer to illustration 10277 When contacts are closed resistance should be 50 ohms or less M C KEY NOT USED FOR PROGRAMMING KEYPAD 10277 Page 69 of 88 TIMER SERVICE DIAGNOSTICS WARNING DISCONNECT THE X v ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT gt TAGOUT PROCEDURES NOTE The program will stop if a timer controller error is detected 1 Remove the switch plate assembly from transmission case Do not disconnect wiring 2 Jump TP1 and TP2 on main control board Entering Service Diagnostics WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DISCONNECT POWER AND FOLLOW LOCKOUT TAGOUT PROCEDURES ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 3 power on 4 Press CLEAR and HOBART keys simultaneously The timer will beep twice the display will show tE St then the display goes into automatic scroll F12536 Rev A December 2005 MODEL 600 660 1 800 TIMER AND SWITCH PLATE TIMER SERVICE DIAGNOSTICS Tested Area Display Beepe
60. assembly malfunction 1 Key switch push not recognized Keypad malfunction Perform KEYPAD TEST 2 Main board assembly malfunction if keypad is good F12536 Rev A December 2005 Printed in U S A
61. assembly within splash guard assembly checking for binding being too loose and clearance between splash guard and bowl If any of the conditions stated earlier exist adjustment is necessary Adjustment 1 If cage is binding on rim of drip cup or it is too loose loosen two screws holding adjustable shoe to cage assembly A Turn adjusting screw Press the shoe to ensure it is against the screw then tighten the mounting screws Repeat this step until proper adjustment is achieved Page 11 of 88 If when the wire cage assembly is rotated it rubs the splash guard assembly at the rear the following steps should be performed to eliminate the rubbing 1 If there is clearance between the splash guard assembly bottom flange and the pedestal apron place a hand on each side of splash guard assembly at front and gently squeeze hands together for cage clearance a Check to see if rubbing has been eliminated If rubbing is still present and there is no clearance between the splash guard assembly bottom flange and the pedestal apron remove and discard access opening cover on bowl support assembly 1 Check to see if rubbing has been eliminated If rubbing is still present mark the pedestal apron where it rubs remove the apron and cut a rectangular slot in apron to gain clearance for the splash guard assembly bottom flange Apply power to mixer Check BOWL GUARD SWITCH operation F12536 Rev A December 2005
62. chnical Notes icis ex rernm Elbe luteus due DER b Ebr ure EE DER Re 3o is 35 P660 Single Phase Motor Service 35 Oil Eeake 5 ena os TR ederet ret bo E oed ah eat 35 Motor Fan Replacement LG00TH 36 Removal o MOO er EOS NEA eR EE PEE SE 36 Disassembly Of Lite RR oec RR ate db Rede 39 Servicing Single Phase Starting Components 40 Reassembly of Motor 22 0 2 ga RU ER EU IER WU RR Nee Y Bau Rm RU VEA 41 Rotor Shaft Alignment 2 DUE SUE eR E rg 41 Reinstalling the 2 42 Replacement of Enclosed Iron Single Voltage Motor Exposed Iron Motor H600 amp L800 Only OS C Rep tegit etis 43 F12536 Rev A December 2005 Page 2 of 88 MODEL H600 P660 L800 GENERAL Servicing the Brake Eu eve dede wr to debe ben E 45 Replacement of Brake 45 Replacement of Solenoid 45 Braks AUSIT k ze our RR Db EL S PSU an
63. d Style Bowl Guard Switch as outlined in this section Connect RED wire of reed switch to CON C 1 and BLACK wire to OL C Perform Check Both Styles of Bowl Guard Switch as outlined in this section Adjust if necessary Reinstall TOP COVER Check mixer for proper operation Installation New Style 1 Feed wires of replacement reed switch up through tubing of reed switch housing Position reed switch high almost flush inside tubing and snug set screw Connect reed switch wires to mixer wiring harness Reinstall BOWL GUARD ASSEMBLY and perform Adjustment New Style Bowl Guard Switch as outlined in this section Perform Check Both Styles of Bowl Guard Switch as outlined in this section Adjust if necessary Check Both Styles of Bowl Guard Switch Of ON oS Mixer must stop when wire cage assembly is moved away from full closed position Mixer must not run with wire cage assembly removed Mixer must run only when wire cage assembly is fully closed centered lever in slot for old style For old style bowl guard switch The plastic switch plate must be in contact with the splash guard metal housing of reed switch assembly must not touch the splash guard Raise bowl support up to stop all the way up Close wire cage Apply power to mixer Start mixer Check bowl guard switch actuation A Old style bowl guard switch 1 Slowly open wire cage The mixer must stop when t
64. d remove top cover The longer of the two screws secures the back of the top cover to the mixer SCREWS 2 Reassemble reverse order F12536 Rev A December 2005 Page 14 of 88 MODEL 600 660 1800 PLANETARY PLANETARY TECHNICAL NOTES The oil pump was removed from the planetary on late production mixers Refer to the table below for ML number information Those mixers without an oil pump are to be lubricated with 4 oz Chevron FM EP NLGI 2 applied to the internal pinion gear and the internal gear on the planetary ML NUMBERS FOR MIXERS PRODUCED WITHOUT A PLANETARY OIL PUMP Model mL Description 134189 Stainless Steel Heoo 134194 134203 134194 134204 134205 134198 pee 7134200 PLANETARY ASSEMBLY WARNING DISCONNECT THE Ss ELECTRICAL POWER TO THE lt MACHINE AND FOLLOW LOCKOUT 5 PROCEDURES SES SS Ss E Removal 1 Lower bowl support 2 Remove agitator bowl and BOWL GUARD or drip cup 1 photo 6574 3 Drain planetary oil by removing drain plug 2 photo 6574 CAUTION support planetary while removing retaining screw to prevent planetary from dropping Page 15 of 88 NOTE To keep planetary shaft from turning while removing the retaining screw install an agitator attachment and hold it while loosening the retaining Screw 4 Remove retaining screw
65. damage by electrostatic discharge during field repairs A field service grounding kit is available to prevent damage The field service grounding kit must be used anytime the control board is handled 1 Remove TOP COVER 2 Remove switch plate assembly from transmission case Save screws A Disconnect wiring and discard switch plate assembly 3 Remove the shifting unit interlock switch and disconnect the wires 4 Pull the wires from switch cavity A Remove P clamps on wiring harness and pull switch cavity wires and wires from shifting unit interlock switch to rear of unit B Remove control panel from pedestal to allow access to wire connections at bottom of contactor and overload relay C Disconnect switch cavity wires and shifting unit interlock switch wires from control panel components and discard wires NOTE In some cases the switch cavity opening will not allow proper installation of switch plate assembly without reshaping cavity opening A template is supplied in the kit to determine if reshaping is required 5 Tape template in position over switch plate mounting holes in transmission case A Determine if any of the casting is inside the opening in the template 1 of the casting is present remove the template and continue with procedure 2 If casting is inside opening the transmission case must be modified Page 71 of 88 a Place a shop cloth inside switch cavity opening and r
66. e display Using Dial Timer to Set Mixing Time 1 Turn knob to desired mixing time The M C indicator will be lit 2 Press START to begin mixing The timer will countdown from the set time to 00 00 1 A Pressing STOP will suspend the mixing and timer countdown 1 Press START to resume both mixing and timer countdown 2 Press CLEAR to return to idle display B When timer reaches 00 00 1 The mixer stops 2 M C indicator goes off 3 Abeep tone sounds for two seconds 4 The mixer returns to idle display Using Preset Keys P1 or P2 to Set Mixing Time NOTE Each preset key has four time settings The indicator LED above the number 1 2 3 4 in the time display and the P1 or P2 indicator LED identify which preset time is being displayed NOTE The timer reverts to the factory programmed preset times after any power interruption FACTORY PROGRAMMED PRESET TIMES Indicator Preset Key 1 2 3 4 01 00 02 00 10 00 00 00 P2 dts 02 00 01 00 05 00 03 00 1 Beginning from the idle display state press P1 or P2 to display the No 1 preset mixing time Mr KNOB a R comoug ip o won mC E x N Al 1728 F12536 Rev December 2005 Page 66 of 88 MODEL H600 P660 L800 TIMER AND SWITCH PLATE EXAMPLE An illuminated LED above P1 and 1 in timer display indicates the first preset time contained in P1 A Ift
67. e planetary shaft Install shim with shoulder side up to top of machine 6 Carefully raise the worm gear shaft assembly far enough to slip the clutch shaft assembly in place without pulling the self aligning bearing out of its seat A Install the clutch shaft assembly 7 Install the shifting yoke s A H600 L800 Install the upper and lower shifting yokes together and insert the shifter shaft 10 11 12 13 F12536 Rev A December 2005 Page 22 of 88 SHIM SHOULDER Install upper ball bearing on clutch shaft assembly Reinstall the planetary washer and key Refer to PLANETARY section and perform PLANETARY INSTALLATION Also install BOWL GUARD Turn the motor fan slowly by hand to check operation of transmission MODEL 600 660 1 800 TRANSMISSION 14 Perform GEAR SELECTOR ASSEMBLY INSTALLATION as outlined in this section NOTE Before installing top cover check the condition of the oil delivery tube 15 Lightly coat lip of top cover with Permatex 2 or an equivalent sealer 16 Verify fill plug also used as a vent tube in top cover is free of debris 17 Carefully seat top cover over the dowels locating it on the transmission housing 18 Install lock washers and bolts Tighten bolts in an alternating pattern 19 If new parts have been installed on the worm gear shaft vertical adjustment of the shaft is necessary Refer to WORM GEAR SHAF
68. e the attachment hub A Carefully and neatly cut the paint around the outside of the hub B Remove the socket head screws 1 photo 6616 which secure the attachment hub to the transmission housing C Place a rag on the hub to protect the finish D Using a rubber or plastic mallet rap the hub sharply to loosen it from the transmission housing E Pull the attachment hub out of the transmission housing Page 32 of 88 MODEL 600 660 1 800 TRANSMISSION INSTALLATION 1 Clean front of transmission housing making sure it is free of oil residue 2 Check to be sure the oil inlet 1 photo 6617 and drain holes 1 photo 6619 of attachment hub are open before installing it into the transmission housing m 6619 3 Install the front needle bearing so that its rear edge is 15 16 from the casting as shown Make certain that it does not extend into the oil return cavity BEARING MUST BE FLUSH WITH CASTING FLUSH WITH CASTING gt gt 6618 OIL ENTRANCE MUST S NOT BE BLOCKED FRONT NN E SEA TP 7 B OIL DISCHARGE HOLE BEARING MUST BE XJ Install the rear needle bearing until it is flush with edge of casting as shown Coat seat of attachment hub 3 photo 6617 with Permatex 2 or equivalent Install attachment hub into transmission housing with drain hole 1 photo 6619 facing down Secure with socket head screws Instal
69. e worm and gear resulting in a noisy mixer and or a damaged worm gear The alignment tool Part No TL 82901 must be used 1 Verify torque of motor bearing bracket bolts is 108 in lb 9 ft Ib 2 H600 and P660 Remove the worm Be sure to support the shaft when removing roll pin holding worm in place so load of hammer impacts is not transferred to motor bearings NOTE A motor stand can be made from four 9 pieces of 2x4 lumber to support the motor in vertical position 3 Position motor so drive end is up 4 Remove all shims from mounting ears 5 Install alignment tool TL 82901 on motor shaft F12536 Rev A December 2005 MODEL H600 P660 L800 MOTOR A 600 and P660 Place tool on motor shaft using the 3 4 hole and slide it tightly against shoulder on shaft Tighten both clamping screws to secure the tool to the shaft The measuring stud should be located in the outer 3 8 tapped hole H600 amp P660 ONLY B L800 Place tool over worm using the 1 1 4 hole and slide on the shaft approximately 1 3 8 Tighten both clamping screws to secure tool to the shaft The measuring stud should be located in the inner 3 8 tapped hole L 800 only N 23 D t EILEEN 6 Determine which ear is closest to end of measuring stud by rotating tool and shaft Adjust the measuring stud until end of stud barely touches only one ear Tighten the lock nuts NOTE Do
70. edet eoru aeta 15 Dis ssembly tute Prae secet Page Pado aet Buda d pete 16 TRANSMIS HON vryer re erar EEEE V 19 T chrlcal Notes Sid vare REE DIU YR 19 Disassembly of Transmission 0 19 Assembly of Transmission 4 1 22 Worm Gear Shaft Assembly 2 23 Shock Absorber Adjustments 4 24 Vertical Adusien es ate te EUR DR Rute 24 Clutch shat oun vies ce utem Lut ah apie Min DOR DX b iM Lie qued bod apie field 25 Changes etis mc qp p Im EN VA ex RS qc ui qa page Meade BAD A pa Meals 25 Disassembly 60011800 26 Disassembly P660 Two Speed Clutch Shaft 26 Disassembly P660 Single Speed Clutch Shaft 28 PER INTRO RARE EPA PE Qr YE d E E ETATE RR EE Y 28 Planetary Shaft Assembly lt 4 ens 29
71. elow to identify the planetary shaft ORIGINAL DESIGN SECOND DESIGN 005 R 030 R THIRD DESIGN FINAL DESIGN 6609 Page 29 of 88 REMOVAL DISASSEMBLY NOTE In order to remove the planetary shaft assembly the planetary must be removed and the transmission completely disassembled NOTE The planetary shaft redesign in February 1994 on model P660 mixers eliminated the retaining ring Whenever a replacement planetary shaft using a retaining ring is ordered a new planetary shaft assembly will be sent Models H600 L800 P660 1 Perform PLANETARY ASSEMBLY REMOVAL as outlined in PLANETARY 2 Disassemble the TRANSMISSION NOTE The upper bearing shim upper gear and key will have been removed during transmission disassembly 3 Remove the retaining ring if present P660 only 4 Remove the spacer 1 photo 6610 gt 6610 H600 AND L800 PLANETARY SHAFT ASSEMBLY 5 Remove the lower gear and spiral bevel gear 2 photo 6610 Be careful not to lose the key NOTE The lower gear and spiral bevel gear may be separated by removing the four socket head screws and lock washers 3 photo 6610 6 Remove the planetary shaft NOTE Late production mixers used a plastic chimney with an O ring 7 Remove the chimney 4 photo 6610 F12536 Rev A December 2005 MODEL 600 660 1 800 TRANSMISSION 55 155 ER UPPER B
72. en phase mixer F 18823A Sequence may vary depending on the components present on the mixer being serviced Refer to the wiring diagram present A Timer N O contacts open on the mixer being serviced 6 Timer counts down to zero 1 Contactor CON coil is de energized 1 Conditions and N O contacts open A Mixer connect to supply voltage a Mixer motor de energizes B Bowl guard open b Latching circuit is disabled C Bowl support down LOCK solenoid de energizes D Mixer in 1 speed 1 L1 potential to START 2PB and contactor side switch CON C E Timer set to four minutes NOTE For motor driven timers to set timer for times below three minutes turn timer knob past three minutes then adjust to desired time 1 Timer N O contacts close 2 Bowl guard cage closed A Bowl guard switch 2LS contacts close NOTE Mixer can now be operated provided START switch is pushed and held in 3 Bowl support raised to the full up position A Height switch 3LS contacts close 4 START button is pushed closing the momentary N O contacts A Contactor CON coil is energized through timer N O closed contacts N C overload contacts and guard switch 2LS 1 Contactor contacts close 2 Mixer motor energized 3 Timer motor energized beginning countdown operation 4 Contactor side switch contacts close creating a latch circuit around START switch contacts 5 START button is released Mixe
73. ene o BD Ln 4 Specificatlons p Um MEER RA Dam aude YEA BAR EA 4 Lubrication ETTUUTUTUUTPT 5 Reference Material E E 9 TOOS REDUCE 9 BOWL GUARD 1 224 Hope b Pee heel E e er 10 Technical orta c E 10 WTEC IGE Paes ati E 10 Bowl Guard Assembly durata PEER ated ts 11 e sont ads T add capa Sirti 11 Adjustment x eet eme giae ia tee ed Edda 11 Bowl Guard seed esum eur e en eed dut edere ee bord eene edid 12 Check Applicable to Both Styles of Bowl Guard Switch 13 Adjustment Old Style Bowl Guard Switch 2 vae oues vex oom xp xe re quad iu a Sree quus lt 13 Adjustment New Style Bowl Guard 14 TOP COVER ASSEMBLY 2 2 12 E x Gu qeu iret e can Ee pee quere ug 14 25 Vere Gh Ele onse beet ee t 15 Technical ccm 15 Planetary Assembly zerora reor EEs eed Oa P dA REA qa NY Sa pU EA p ODE Y 15 Removal Feed Up oed od Fete oeste Pede edo d
74. es mixer transmission Motor that drives bowl support lift Mixer motor overload with N C contacts in series with the contactor CON coil Bowl locking mechanism Not available with power bowl lock feature N O contacts in latch circuit Switch is closed when the bowl guard is closed Switch is closed when bowl support is lifted into the full up position Controls lifting operation of power bowl lift circuit Switch is closed anytime the gear shift lever is in the detent for a gear When the gear shift lever is out of the detent the limit Switch is open Located on switch plate Momentary N O contacts push to make N C contacts complete circuit for bowl lock mechanism Located on switch plate N C contacts momentary push to break Shuts machine off Interface used to connect mixer motor to wiring harness Located in the control circuit the electrically powered timer utilizes internal N O contacts to control flow of electricity through the timer controlling mixing time Transformer used to step down supply voltage to control line voltage of 115 VAC Fuse board located on primary side Power bowl lift was an available option on H600 and L800 mixers Page 73 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 ELECTRICAL OPERATION SEQUENCE OF OPERATION 4 Gear selector shift is taken out of gear LS contact open NOTE Sequence of operation based on P660 three 5 Overload contacts op
75. eshape opening until casting is not present inside template Recommended tools consist of an electric hand drill and carbide rotary burr file b Remove the template c Carefully remove the shop cloth and dispose of the removed material Feed kit wiring harness from switch cavity through the hole in transmission case Route the wires to the control panel except a ground wire that will be installed under the P clamp at the top of transmission case and two branded wires that go to the shifting unit interlock switch area A Wire the control panel components per the branding on the wiring harness wires and supplemental wiring diagram from the kit If a splice is not present the wires marked splice go to the normally open N O Contacts on the contactor side switch B Fasten the rear ground wire to the grounding lug at the top of the pedestal C Install snubber assembly between C1 C3 on contactor D Reinstall control panel to pedestal E Reinstall the P clamps Place a ground wire under the P clamp at the top of the transmission case F Connect the wires to shifting unit interlock Switch and reinstall switch Mount the buzzer assembly at the two lower gear shift bracket holes using the existing screws and lock washers A Route buzzer wires to switch cavity Plug the wiring harness into the switch plate assembly main circuit board A Connect branded wire to 2PB C on start Switch B Connect grou
76. f 88 10274 10 11 Check braking action If correct adjustment is complete A If less braking action is desired continue to next step Loosen the four mounting screws on the solenoid and move solenoid to its lowest position Check braking action If correct adjustment is complete lf further adjustment be needed continue to next step Pull the solenoid armature 4 photo 10274 up by hand until brake lining touches the brake drum With no tension on brake spring the remaining travel of the solenoid armature should be no more than 5 16 Should remaining travel exceed 5 16 stretch the brake spring by holding solenoid armature closed and push down on the brake band being careful not to over stretch the brake spring Should none of the above steps decrease braking action enough remove brake band and grind down brake lining near pivot end 6 photo 10274 until it clears the brake drum Recheck braking action and replace the top cover Check mixer for proper operation MODEL H600 P660 L800 MOTOR ELECTRICAL CONNECTIONS WARNING DISCONNECT THE eU ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT 55 TAGOUT PROCEDURES MIXER MOTOR WIRING CONFIGURATION Leads From Contactor Tie Together Motor Leads T1 T2 T3 Dual Voltage Motors Only Single Phase T1 T4 N A Wistar G i Single Voltage T1 T3 T3 Three Phase Dual V
77. front motor bearing Resolve A groove was machined into the bearing bore of the motor front bearing bracket bore of the motor front bearing bracket In addition an O ring was installed into the grove to stop oil leakage F12536 Rev A December 2005 MODEL H600 P660 L800 MOTOR GROOVE FOR O RING 10254 Procedure Install both the front motor bracket and O ring to replace the old bearing bracket Refer to the catalog of replacement parts for the front bearing bracket and O ring part numbers MOTOR FAN REPLACEMENT L800TH ONLY NOTE The fan is properly installed on the motor shaft when the raised ribs of fan face toward the motor Looking at the rear of motor fan end the motor shaft should rotate clockwise Procedure 4 WARNING DISCONNECT THE a ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES Up 1 Remove top cover 2 Remove fan retaining nut from end of motor shaft and pull the fan off RAISED RIBS TOWARD MOTOR 3809 3 Install replacement fan raised ribs toward motor and retaining nut F12536 Rev A December 2005 4 Power mixer and check for proper operation 5 Reinstall top cover REMOVAL OF MOTOR 4 WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES 1 Remove top cover CAUTION Always discharge a capacitor before disconnecting the leads
78. he same preset key P1 or P2 is pressed again the next preset time will be displayed Continually pressing the P1 or P2 key will advance thru the remaining preset settings 1 Turning the KNOB will adjust the time from the preset time that is displayed Adjusting the time in this manner will only affect the current time and will not alter the programmed preset time 2 Press START to begin mixing The timer will countdown from the set time to 00 00 A Pressing STOP will suspend the mixing and timer countdown 1 Press START to resume both mixing and timer countdown 2 Press CLEAR to return to idle display B When timer reaches 00 00 1 The mixer stops beep tone sounds for two seconds 3 The next preset mixing time displays 4 When the last preset time reaches 00 00 J the P1 or P2 indicator goes off and the mixer returns to idle display Programming Preset Keys P1 and P2 Mixing Time NOTE Each preset key has four time settings The indicator LED above numbers 1 2 3 4 in the time display and the P1 or P2 indicator LED identify which preset time is being displayed The preset times can be programmed to different times from the default settings listed below NOTE The timer reverts to the factory programmed preset times after any power interruption FACTORY PROGRAMMED PRESET TIMES Indicator Preset Key 1 2 3 4 pA ei 01 00 02 00 10 00 00 00 02 00 01 00 05 00 03 00
79. he slot in the saddle of wire cage is more than 1 4 away from the lever mounted to the drip cup B New style bowl guard switch 1 Slowly open wire cage The mixer must stop when the wire cage is moved away from the fully closed position Adjustment Old Style Bowl Guard Switch NOTE The spring loaded plastic switch plate must be in contact with splash guard without the metal housing of bowl guard switch touching the splash guard 1 Install the splash guard and wire cage assembly 2 Close wire cage lever in slot Disconnect bowl guard switch wiring from the overload OL and contactor CON A With meter set to measure resistance place meter leads across leads of reed Switch 1 With wire cage closed meter should indicate a closed circuit NOTE If meter indicates an open reed switch regardless of wire cage position check to see if magnet is present on wire cage 4 Open wire cage while watching meter for change to an open circuit A Reed switch must open when the slot in the saddle of wire cage becomes greater than 1 4 away from the lever mounted to the drip cup 1 If necessary add or remove gasket s behind the housing until correct bowl guard switch operation is achieved HOUSING GASKET 5 Connect bowl guard reed switch wiring to mixer wiring harness 6 Reinstall switch plate Page 13 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 TOP COVER A
80. he transmission REPLACING THE SHEAR KEY 1 Remove the special left hand thread screw F12536 Rev A December 2005 MODEL 600 660 1 800 TRANSMISSION 2 Screw Hobart T bar Part No TL 58246 or standard 3 8 16 screw into the right hand threads in the square drive sleeve of the attachment hub and extract the sleeve 3 Remove all pieces of the old shear key from the attachment hub NOTE Before installing a new key insert the square drive sleeve into the attachment hub and check to be sure it turns freely 4 Insert a new shear key on the drive sleeve and reinstall the sleeve into the hub ay 5 Install the left hand screw 6 Check mixer for proper operation REMOVAL NOTE The planetary must be removed and the transmission must be completely disassembled in order to remove the attachment hub assembly 1 Remove the PLANETARY ASSEMBLY as outlined in PLANETARY Disassemble the TRANSMISSION Slide the attachment hub shaft assembly out of the attachment hub A Remove the bearing 3 photo 6616 from bevel pinion shaft F12536 Rev A December 2005 B Remove the shim s 2 photo 6616 from bevel pinion shaft 4 Remove the needle bearings H600 amp P660 or the ball bearing L800 from the attachment hub 2 photo 6617 NOTE It may be necessary to remove the attachment hub from the mixer in order to press out the bearings E 6617 5 Remov
81. ift is obsolete Production started using either a General Electric or Howell Electric motor beginning in December 1987 for the bowl lift motor Removal 1 If possible place bowl support in lowest possible position ky WARNING DISCONNECT THE aS v ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT gt TAGOUT PROCEDURES EN SS 2 Remove the COVER 3 Discharge the power bowl lift PBL capacitor Page 58 of 88 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM Remove the mixer MOTOR Disconnect the leads from the PBL fuse board and capacitor 10282 7 Slide the bowl lift assembly towards the PBL switch and remove the Flexa Gear belt 8 Remove the two mounting bolts from the switch 3 photo 10282 rotate the switch to pull the switch handle through the hole in the pedestal and lift the PBL and switch out of the pedestal Page 59 of 88 Disassembling the PBL Transmission 1 Remove the cover from the PBL switch disconnect the white lead from 6 terminal and set the switch aside we 2 Remove the retaining ring 1 photo 6642 that holds the drive pulley in place Remove the drive pulley and key 3 Remove the bolts from the gear case cover 2 photo 6642 Tap the cover lightly to break the seal and pry it off the locating pins 4 Remove the PBL transmission shaft assembly and key F12536
82. iginal oil baffle was made from carbon steel and was replaced with an oil baffle made of nylon The nylon oil baffle requires a special washer to secure the oil baffle in position Both oil baffles install the same way Discard original washers when using special washer F12536 Rev A December 2005 NYLON OIL BAFFLE SPECIAL WASHER 6 Remove oil baffle 6 fig 6575 O ring 7 fig 6575 and shim 8 fig 6575 NOTE Check condition of O ring on the oil baffle Replace if necessary 7 Remove upper bearing 9 fig 6575 8 Remove oil seal 10 fig 6575 and lower bearing 11 fig 6575 from bottom of planetary Page 16 of 88 MODEL 600 660 1800 PLANETARY NOTE Always install a new seal in bottom of planetary when reassembling Place a light coating of lubricant on the seal lip to eliminate squealing 9 Place a light coating of Permatex 2 or similar sealer on seat of oil retaining cap 2 Fig 6575 before reassembling 10 Reassemble agitator shaft in reverse order AGITATOR SHAFT PIN ky WARNING DISCONNECT THE ELECTRICAL POWER TO THE lt MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES 1 Remove plug screw 1 photo 6580 2 Remove the two set screws 2 photo 6580 NOTE When reassembling make certain that the pointed set screw seats in hole of pin 3 Remove pin 3 photo 6580 4 Reassemble in reverse order
83. indings and capacitors are no longer needed and the centrifugal switch opens removing power to the start windings The motor then runs on the main windings Most single phase motor problems can be traced to the centrifugal Switch or capacitors STARTING RUNNING 120 VAC 120 VAC CAPACITOR 11 12 L1 12 ROTOR 4 START o ial MAIN WINDING E WINDING START D SWITCH SWITCH CLOSED i OPEN 10268 1 Check capacitor by substituting a known good capacitor in its place An alternate way to check the capacitor is with a meter set to measure resistance as follows although this check is not always reliable NOTE Always discharge th e capacitor before making this check with an ohmmeter A Discharge capacitor by placing the blade of a screwdriver across the terminals B Remove the leads from the capacitor terminals C Seta digital meter to read resistance ohms If possible select the R x 1000 range D Place meter leads across the two capacitor terminals while watching the meter 1 capacitor is good the meter should indicate some resistance value not important then the indicated resistance value will slowly rise F12536 Rev A December 2005 Page 40 of 88 2 Ifthe capacitor is shorted the meter will show a short circuit condition or low resistance value This value is typically just a few ohms 3 Ifthe capacitor is open the meter will indicate an open circuit no resist
84. l gear in place on the shaft Be careful not to cut the O ring seal on the key way of the shaft Page 30 of 88 MODEL 600 660 1 800 TRANSMISSION 6 Install the spacer NOTE The top gear 2 photo 6594 key and planetary shaft assembly shim 4 photo 6594 must be installed after the worm gear shaft and clutch shaft assemblies are installed into the transmission housing The shouldered face of shim must be facing up when installing Model P660 1 Place the lower bearing in its seat in the transmission housing 2 photo 6611 2 Install chimney A For mixers using a metal chimney place light coat of Permatex or equivalent on both sides of the chimney gasket Install the chimney gasket and chimney into the transmission housing B For mixers using a plastic chimney inspect the O ring for damage If damaged replace the O ring then install chimney into the transmission housing 3 Inspect condition of quad seal an the planetary shaft Replace if damaged QUAD SEAL Install planetary shaft Install spacer Slide the lower gear and spiral bevel gear in place on the shaft Be careful not to cut the quad seal Page 31 of 88 NOTE The top gear 2 photo 6594 key and planetary shaft assembly shim 4 photo 6594 must be installed after the worm gear shaft and clutch shaft assemblies are installed into the transmission housing The shouldered face of shim must be facing up
85. l shim s and then bearing onto bevel pinion shaft Install attachment hub shaft assembly into attachment hub A Check that hub shaft assembly moves freely in the attachment hub Reassemble TRANSMISSION Page 33 of 88 GEAR SELECTOR ASSEMBLY WARNING DISCONNECT THE ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES REMOVAL NOTE The gear selector assembly can be removed without draining the transmission oil or opening the transmission case 1 2 Remove selector plate Remove the gear selector limit switch 1 photo 6589 if present Remove the mounting screws 2 photo 6589 and carefully remove gear selector assembly from transmission housing DISASSEMBLY 1 Drive the pin from the handle hub and remove the hub NOTE Be careful not to lose the two springs and balls located behind the switch cam when removing Switch cam 2 Remove the pin from hub of switch cam and slide cam off shifter shaft 3 Slide the gear shift bracket off the shifter shaft 4 Remove the pin from gear shift cam assembly and remove cam from shifter shaft F12536 Rev A December 2005 MODEL H600 P660 L800 TRANSMISSION CAM GEAR SELECTOR HANDLE ASSEMBLY SHIFT PLATE HUB BRACKET SPRING SWITCH AND BALL CAM 6620 ASSEMBLY 1 Check condition of O ring on the shifter shaft and replace if necessary 2 Clean gear shift bracket to remove old sealant and
86. lanetary through fill hole Exxon Spartan EP150 NOTE The oil level should be even with the bottom of the fill hole C Replace oil fill plug and bowl guard assembly or drip cup 3 Check mixer for proper operation Manual Bowl Lift WARNING DISCONNECT THE ELECTRICAL POWER TO THE Eo S MACHINE AND FOLLOW LOCKOUT NS TAGOUT PROCEDURES ap 1 Lubricate the bowl lift gearing NOTE The manual bowl lift gearing is located inside the pedestal below the mixer motor and should be lubricated annually depending on usage It is not necessary to remove motor to lubricate or service manual bowl lift A Remove top cover B Coat gearing photo 6570 with the recommended lubricant CHEVRON FM EP NLGI 2 NP lt gi MOTOR REMOVED TO SHOW GEARING C Replace top cover D Check for proper operation 2 Lubricate the bowl lift screw assembly NOTE The bowl lift screw assembly should be greased semi annually or more often depending on usage with the recommended lubricant A Place bowl support in its lowest position B Remove pedestal apron thumbscrews 1 photo 6571 Page 7 of 88 F12536 Rev A December 2005 MODEL 600 660 1 800 GENERAL Slideways 1 Place bowl support in its lowest position 4 WARNING DISCONNECT THE ELECTRICAL POWER TO THE 2 MACHINE AND FOLLOW LOCKOUT SS S TAGOUT PROCEDURES
87. llecting around springs and balls of gear selector assembly Oil level in planetary too high Oil leakage from planetary Drain plug not tight Oil retaining cap on internal pinion gear not seated properly Oil baffle O ring pinched or cut Planetary oil shield not in place Planetary oil pump outlet not positioned properly Oil level in transmission too high o N oar wD Chimney O ring leaking 9 Chimney cracked 10 Planetary lip cracked 11 Bevel gear quad seal pinched or cut F12536 Rev A December 2005 Page 86 of 88 MODEL 600 660 1800 TROUBLESHOOTING MECHANICAL TROUBLESHOOTING Oil leakage near front of motor 1 Motor O ring seal pinched or cut Motor oil drain hole clogged Bowl support slips down during Refer to BOWL SUPPORT ADJUSTMENT mixing operation Bowl creeps down during mixing Bowl lock mechanism not functioning properly Cannot lower bowl at end of mixing 5 Back off on hand wheel slightly then try again Operation NOTE It is normal for the mechanism to be tight at the end of the mixing operation 2 Bowl lock mechanism or circuit not functioning properly ELECTRICAL TROUBLESHOOTING Symptom Possible Causes Electrical service circuit breaker inadequately sized circuit breakers or line fuses opening or blown line fuses when START switch is depressed Mixer motor leads shorted in junction box Mixer motor field windings shorted Refer to TESTI
88. lled as shown with the visible ball section of the angular bearing toward the clutch shaft assembly The cage of the bearing will be toward the retaining ring Unlike a radial contact ball bearing whose inner to outer race contact point is a 90 angle to the shaft the angular contact ball bearing s contact point is shifted downward at a 30 or 40 angle to allow for a heavier axial load CAGE BALL OUTER RACE INNER RACE 6384 INNER RACE CLUTCH SHAFT ASSEMBLY BALL RETAINING RING DIRECTION CONTACT OF LOAD ANGLE CAGE 6382 ANGULAR CONTACT BALL BEARING 1 Reassemble parts in reverse order of removal Page 28 of 88 MODEL 600 660 1 800 TRANSMISSION Model P660 Two Speed Clutch Shaft NOTE The two lower gears on the clutch shaft assembly must be free to turn on the shaft and the clutch should slide freely up and down on the splines Should the clutch seem to bind take it off turn it to a new position and check it again 1 Reassemble parts in reverse order of removal Model P660 Single Speed Clutch Shaft 1 _Reassemble parts in reverse order of removal PLANETARY SHAFT ASSEMBLY CHANGES Model P660 The planetary shaft assembly was redesigned in February 1994 to increase shaft strength If an original second or third design planetary shaft is ordered a replacement kit will be sent for those parts that will not fit onto the last design shaft Use the illustration b
89. lock kit The bowl lift nut assembly can be identified by a slot cut through one side of the nut A hole has been drilled and tapped and a cap screw and lock washer are installed to adjust tension When the original bowl lift nut is ordered the new bowl lift nut assembly will be sent Refer to BOWL LIFT NUT ASSEMBLY ADJUSTMENT for adjustment procedure BOWL SUPPORT WARNING DISCONNECT THE m x ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES Removal 1 Remove the pedestal apron 2 Break the paint covering the heads of the three lower screws on the right hand slideway SLIDEWAY 3 Place a 2x4 plank across the base and lower the bowl support until it rests on the plank 4 Remove the bowl lift nut retainer from the bowl support and run the nut up the lift screw On L800 mixers pry the spring seat up and off the pins Page 51 of 88 NOTE On some mixers the bolt on the left side of the lift screw is longer has a locking nut and is used for bowl height adjustment 5 Loosen the top screw and remove the lower five screws on the right hand slideway 6 Move the slideway to the side away from the bowl support photo 10283 to provide clearance for bowl support removal Tighten the top screw holding the slideway in this position 7 Swing the bowl support clear of bowl lift screw by raising the front of bowl lift assembly Installation NO
90. mper stop and loosen the bump stop and jam nut 2 Fig 6629 NOTE On mixers equipped with a power bowl lift raise or lower bowl support by turning the lift screw with a wrench on the machined hex area 2 photo 6628 of lift screw Page 53 of 88 2 Raise or lower bowl support so there is 1 8 clearance between bottom of beater and the bowl 3 Turn the stop screw 3 Fig 6629 until it is tight against the bowl support stop 4 Fig 6629 CLEARANCE 6629 4 Tighten jam nut and bumper stop and replace the cap plug 5 Lower and then raise the bowl support until it is up against the stop A Recheck the bowl to beater clearance making sure the 1 8 clearance is maintained Adjustment Stop Screw Located on Left Side of Lift Screw 1 Remove the pedestal apron 2 Lower the bowl support slightly and loosen the jam nut F12536 Rev A December 2005 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM 3 the stop screw CCW or CW to raise or lower the bowl support 4 Raise the bowl support and check the clearance 5 When desired clearance is achieved lock the stop screw with the jam nut and reinstall the pedestal apron BOWL HEIGHT SENSING NOTE When properly adjusted the bowl height sensing feature insures that the bowl is fully up before the mixer will run unless the start switch is held in manually If the bowl height sensing feature is added to a mixer using a ki
91. n lb approximately 4 turns from finger tight Do not over tighten hardware Check PBL for proper operation Replace TOP COVER ASSEMBLY Check mixer for proper operation POWER BOWL LIFT SCREW ASSEMBLY Removal 1 Lower bowl support to its lowest position before attempting to remove the lift screw assembly WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES Remove the TOP COVER ASSEMBLY Discharge the PBL capacitor Remove the mixer MOTOR Remove the Flexa Gear belt Remove the from the detent plate and hub assembly DETENT PLATE 7 Remove the pedestal apron 8 Place a wrench on the machined hex surface of the lift screw to keep it from moving HEX SURFACE 77 A Slowly loosen the nut on top of the detent plate photo 6654 to relieve the tension from the detent springs B Remove the nut while holding the plate against the pulley assembly 9 Lift off the clutch assembly being careful not to lose the detent springs and balls BALLS WITH SPRINGS 27 UNDERNEATH 10 Drive out the pin and remove the collar 11 Bend down the locking washer tab and remove the special bearing locknut and locking washer F12536 Rev A December 2005 Page 62 of 88 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM LOCKING WASHER AND SPECIAL BEARING LOCKNUT
92. nd wire to threaded stud on assembly C Connect the buzzer wires to the main circuit board F12536 Rev A December 2005 MODEL 600 660 1 800 TIMER AND SWITCH PLATE 9 Look at the jumpers on the main circuit board and discuss with the customer if they want a 15 minute or 22 minute timer 10 second or 15 second increments and locate the jumpers as shown TIMER CONTROL BOARD JUMPER CONFIGURATION Jumper Position Between middle pin and pin marked PLNTRY Reference A in illustration 10275 Pin 1 to 2 Standard position Fifteen minute timer with 10 second increment Pin 2 to 3 Twenty two minute timer with 15 second increment NOTE If jumper location is changed mixer must go from power off to power on to reset timer 10 Reinstall the shift selector plate 11 Install switch plate assembly onto transmission case using saved hardware 12 Peel paper backing from supplemental wiring label and place label next to original wiring diagram in the top cover assembly 13 Reinstall top cover 14 Refer to operating instructions F19121 or OPERATION AND PROGRAMMING for instructions 15 Power mixer and check for proper operation 16 Leave operating instructions with customer F12536 Rev A December 2005 Page 72 of 88 MODEL H600 P660 L800 ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT FUNCTION Capacitor CAP Capacitor 2 Contacto
93. ng a retaining ring is ordered a new clutch shaft assembly will be sent Remove the spacer Remove the upper gear assembly and key Remove the retaining ring lower gear assembly and key 4 Remove the lower retaining ring ball bearing and washer 5 Remove the lower clutch and lower gear assembly 6 Remove the retaining ring washer and lower clutch upper gear assembly CAUTION Spacer Fig 6599 is stepped inside area raised and must be installed toward the upper gear If not installed properly damage to the clutch shaft could occur 7 Reassemble parts in reverse order of removal SPACER B P KEYa RT UPPER GEAR acm AT 3 RETAINING RING LOWER GEAR EDEN IN s LOWER CLUTCH AND 85 UPPER GEAR ASSEMBLY 2 NW WASHER gt ANN RETAINING LOWER CLUTCH AND GEAR ASSEMBLY vi pu BEARING gt LOWER RETAINING RING amp amp 6596 SPACER 2 UPPER GEAR 2 8 GEAR CLUTCH SPACER LOWER GEAR LOWER CLUTCH UPPER GEAR ASSY WASHER RETAINING RING 4 LOWER CLUTCH AND GEAR ASSY C7 BEARING RETAINING RING 6599 ORIGINAL P660 CLUTCH SHAFT ASSEMBLY Page 27 of 88 P660 CLUTCH SHAFT ASSY AS OF 2 94 F12536 Rev A December 2005 MODEL 600 660 1 800 TRANSMISSION DISASSEMBLY P660 Single Speed Clutch Shaft Fig 6
94. not force gauge under the stud F12536 Rev A December 2005 7 Rotate the tool to the other ears Measure the gap between the ear and end of measuring stud with a feeler gauge A Add shims to each ear as necessary to achieve a clearance of 0 005 or less using self adhesive 0 005 shims Part No 275152 as shown 8 Check gaps after shimming Repeat shimming if necessary 9 Install the oil flinger making certain that it is running true If necessary straighten it carefully by hand or tap lightly with a soft mallet CAUTION Be sure to support the shaft when removing roll pin holding worm and oil flinger in place so as not to damage motor bearings 10 H600 and P660 Install the drive worm 11 Install the ventilating fan REINSTALLING THE MOTOR NOTE Apply a light coating of oil on the O ring seal to prevent cutting the O ring during motor installation 1 Before installing the replacement motor whether new or repaired perform ROTOR SHAFT ALIGNMENT NOTE If installing an exposed iron motor in place of an enclosed iron single voltage motor refer to REPLACEMENT OF ENCLOSED IRON SINGLE VOLTAGE MOTOR WITH EXPOSED IRON MOTOR 2 Reinstall motor in reverse order of removal NOTE Make certain that all wires are clear of immediate area surrounding ventilating fan Page 42 of 88 MODEL H600 P660 L800 MOTOR 3 Connect motor leads Refer to WIRING DIAGRAM as outlined in ELECTRICAL OPERATIO
95. oard connection diagram F 14104 illustration 10290 F12536 Rev A December 2005 10 11 12 13 14 MODEL H600 P660 L800 MOTOR Using the appropriate section of the motor terminal board connection diagram F 14104 connect the two 30 lead wire assemblies branded T1 and T2 from the terminal board to T1 and T2 of contactor MOTOR TERMINAL BOARD MTB HIGH VOLTAGE CONNECTIONS SHOWN MOTOR TERMINAL ARD MTB LOW VOLTAGE CONNECTIONS SHOWN BO OH omzaz z xmuzcc J R 5 o 5 R T E R 600 SINGLE PHASE 50 AND 60 HZ MOTOR TERMINAL MOTOR TERMINAL BOARD MTB BOARD MTB HIGH VOLTAGE LOW VOLTAGE CONNECTIONS SHOWN CONNECTIONS SHOWN o4 5 omvzcc IMAP H 600 L 800 THREE PHASE 60 HZ 600 1 800 THREE PHASE 60 HZ DERIVED FROM PROD DWG 294501 HOBART FORM 14104 CORPORATION 10290 Wire tie motor leads to rear top cover support away from moving parts Install a new front cover support into the transmission cover Check mixer for proper operation Affix motor connection diagram to top cover then reinstall the cover F12536 Rev A December 2005 44 of 88 2 3 4 MODEL H600 P660 L800 MOTOR BRAKE UNIT SERVICING THE BRAKE UNIT NOTE The brake was available on H600 and L800 Replacement of Brake Band Dra was 1 Extract the c
96. ock washers holding down the transmission cover and carefully pry the cover off photo 6587 11 Remove the ball bearing from clutch shaft 1 photo 6594 NOTE Before removing top gear of the planetary shaft mark it so that same side of gear will be up when reassembling 12 Remove planetary shaft assembly shim 4 photo 6594 and top gear 2 photo 6594 13 Place a punch through the hole in shifting rod and remove rod 3 photo 6594 8 Remove shift selector plate 1 photo 6588 F12536 Rev A December 2005 Page 20 of 88 MODEL 600 660 1 800 TRANSMISSION 14 Remove shifting yoke Refer to part H600 and L800 or B P660 for model being serviced A Models H600 and L800 1 Carefully remove upper and lower shifting yokes photo 6590 B Model P660 1 Carefully remove lower shifting yoke 1 photo 6591 2 Mar 15 Remove clutch shaft and worm shaft assemblies together 1 photo 6592 Page 21 of 88 16 Remove planetary shaft assembly 2 photo 6592 CAUTION Do not use excessive force when removing the planetary shaft assembly because in late model mixers the chimney is plastic and may crack If shaft assembly cannot be removed with minimal pressure remove snap ring 3 photo 6593 if present and slide the lower planetary and bevel gear 2 photo 6593 from shaft
97. oil residue 3 Reassemble parts removed in reverse order INSTALLATION H600 L800 NOTE The shifting yokes move into 3 speed position when the cams are removed from the transmission 1 Clean transmission housing where gear shift bracket mounts Place handle on speed selector to 3 speed Apply a coat of Permatex 2 or equivalent sealer around the surface of gear shaft bracket that contacts the transmission housing 4 Carefully install speed selector assembly into the transmission housing and secure into place with hardware 5 Reinstall the speed selector limit switch if one was present Install selector plate Place speed selector 157 speed and start mixer A Should mixer run on high speed at this setting 1 Shut mixer off 2 Remove speed select handle 3 Reinstall handle 180 from previous position 8 Check mixer for proper operation INSTALLATION P660 NOTE The shifting yokes move into 157 speed position when the cams are removed from the transmission 1 Clean transmission housing where gear shift bracket mounts 2 Place handle on speed selector to 19 speed F12536 Rev A December 2005 3 Apply a coat of Permatex 2 or equivalent sealer around the surface of gear shaft bracket that contacts the transmission housing 4 Carefully install speed selector assembly into the transmission housing and secure into place with hardware Install the speed selector limit switch
98. oltage Motors 230VAC Low 1 7 T2 T8 T3 T9 4 T5 6 460VAC High T1 T2 T3 T4 T7 T5 T8 T6 T9 TESTING MOTOR STATOR WINDINGS WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES Single Phase 1 Note motor wiring connections and disconnect all motor leads 2 Discharge start capacitors and remove motor leads from start capacitor and centrifugal start switch 3 Set meter to measure resistance A Check each winding for continuity 1 A resistance reading less than listed in the table indicates a shorted stator winding 2 If there is no meter reading the stator winding is open NOTE Be aware that there have been variations in motor windings for the H600 and L800 mixers The mixer motor being serviced may have winding connections that differ from those shown in the manual Page 47 of 88 F12536 Rev A December 2005 MODEL H600 P660 L800 MOTOR SINGLE PHASE MOTOR WIRING ENCLOSED IRON Voltage H600 L800 1 1 2 and 2 MODEL P660 208 240 60 1 AUX J K 1 T2 OR T4 10294 P660 SINGLE PHASE MOTOR STATOR WINDING RESISTANCE Approximate Ohm Values T1 T2 or T4 2 4 A Measure resistance between motor leads and chassis ground Voltage 0 39 Q 1 86 Q 0 45 Q 2330 2 1 2 4 Check for grounded motor 1 Motor leads should not be grounded Meter will indicate infinity open circuit Howeve
99. ore reassembly NOTE If a bowl lift nut assembly is being installed be certain that the head of the cap screw is facing out 2 Reassemble lift screw assembly in reverse order NOTE On L 800 mixers be sure the bowl support stop spring is in place Fig 6653 3 Adjust end play of lift screw as outlined in LIFT SCREW ADJUSTMENT 4 Lower bowl support to its lowest position A Coat lift screw with Lubriplate 630AA 5 Reinstall mixer MOTOR NOTE If bowl lift mechanism uses a bowl lift nut assembly verify BOWL LIFT NUT ASSEMBLY ADJUSTMENT before installing pedestal apron 6 Reinstall pedestal apron 7 Reinstall TOP COVER ASSEMBLY 8 Check mixer for proper operation Lift Screw Adjustment NOTE Refer to Fig 6653 The end play adjustment is provided by the lock nut located on the top of the lift screw The upward thrust is taken by the shoulder on the screw shaft Downward thrust is taken by the bearing A minimum of 0 005 end play should be allowed between the shoulder on the lift screw shaft and the machined surface of the transmission case WARNING DISCONNECT THE x ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT x TAGOUT PROCEDURES 1 Remove TOP COVER ASSEMBLY 2 Remove mixer MOTOR 3 Remove the pedestal apron 4 Holding the handwheel to prevent the lift screw from turning adjust the locknut Fig 6653 to get 0 005 clearance between the shoulder and the machined surface of the
100. otter pin from the brake band stud P on the pivot end of the brake band and remove Removal the washer 3 photo 10273 1 Disconnect the electrical power to the mixer 2 Slide the brake band off the brake band stud and unhook the brake spring 4 photo 10273 Remove the top cover 3 Replace in reverse order of removal Discharge the power bowl lift capacitor Remove the leads to the brake solenoid Replacement of Solenoid 1 photo 34 1 Extract the cotter pin from the solenoid clevis pin 5 photo 10273 and remove the pin and brake spring 2 Remove the four mounting screws on the solenoid and remove the solenoid 6 photo 10273 NOTE Do not lose the brake drum key T Loosen the screw holding the contactor to the back of the pedestal Place the contactor on top of the mixer motor Holding the brake drum so it does not move remove the lock nut 1 photo 10273 and slip the brake drum off the motor shaft 10273 Remove the brake mounting bracket assembly from meters bolts 2 photo 10273 3 Replace parts removed in reverse order of removal Replacement 1 Replace the brake unit in reverse order of removal and check adjustment refer to BRAKE ADJUSTMENT BRAKE ADJUSTMENT WARNING DISCONNECT THE m ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT PROCEDURES 10273 NOTE Place the speed selec
101. peat adjustment if necessary 11 Reinstall pedestal apron Bowl Lift Nut Assembly Adjustment NOTE Refer to TECHNICAL NOTES at the beginning of this section for bowl lift nut production change information 1 Start with bowl support in its lowest position 2 Snug bowl lift nut assembly cap screw 3 Install bowl into place on bowl support 4 Weight bowl to simulate a load and raise bowl support to its highest position F12536 Rev A December 2005 NOTE As threaded surface of bowl lift nut assembly wears the tendency to back drive will increase Tighten cap screw as necessary to prevent back driving 5 With mixer in an idle state check for bowl support back driving by exerting downward force on bowl support A If back driving exists tighten bowl lift nut assembly cap screw until back driving is eliminated Do not over tighten cap screw Me eli m CAP SCREW H HN E ICA TU MON Md ogre BOWL LIFT NUT ASSEMBLY D 6 Lowerand raise bowl lift to check operation Bowl support should raise and lower without too much resistance A If bowl lift is difficult to operate loosen bowl lift nut assembly cap screw slightly B Raise bowl support and recheck for back driving C Repeat adjustment until bowl support can be raised and lowered without too much resistance and there is no back driving 7 Check BOWL TO BEATER clearance 8 Reinstall pedestal apron 9
102. r CON Fuse FU tse Fuse 2FU Fuse ccs Samed EE Fuse 4 0 223 stew Fuse Board 2FB Motor Mixer Motor Power Bowl Lift Overload OL Solenoid Switch Contactor Side CON Switch Bowl Guard 2LS Switch Bowl Height 3LS Switch Bowl Lift 3S Switch Limit 16 Switch Start 2 Switch Stop Transformer and Fuse Board T Start capacitor for single phase mixer motor Start capacitor for single phase P660 mixer motor Used as filter capacitor for bowl lift motor in H600 L800 mixers Motor contactor controlling voltage to mixer motor Located on primary side H1 connection of transformer 2 0 A Located on primary side H4 connection of transformer 2 0 A Located on 2FB Located in the bowl lift motor circuit Hobart built or Howell Electric motors use 3 5 A fuses and General Electric motors use 5 6 A fuses Located on 2FB Located in the bowl lift motor circuit Hobart built or Howell Electric motors use 3 5 A fuses and General Electric motors use 5 6 A fuses Located in the bowl lift motor circuit Motor that driv
103. r any reading above 500 is acceptable B Check all motor leads for short to ground If windings are shorted open or grounded replace the stator Reconnect the start switch and start capacitors Wire the motor to the mixer wiring harness 9 moo Check the mixer for proper operation F12536 Rev A December 2005 48 of 88 MODEL H600 P660 L800 MOTOR Three Phase 1 Note motor wiring connections and disconnect all motor leads 2 Set meter to measure resistance A Check each winding for continuity 1 A resistance reading less than listed in the table indicates a shorted stator winding 2 If there is no meter reading the stator winding is open THREE PHASE MOTOR WIRING T1 5 T4 T5 T7 T8 T9 T6 T3 10278 Approximate Ohm Values T1 T2 T2 1 H600 L800 P660 2 1 2 230V 240V 1 12 1 4 77 78 11 13 12 15 T7 T9 T2 T3 T3 T6 T8 T9 200V 450 100 230 230 380 460V 200V H600 1800 ae and2 380V 460V 1300 390 650 200V 169 280 230V 1690 280 Page 49 of 88 F 12536 Rev A December 2005 MODEL H600 P660 L800 MOTOR TESTING MOTOR CURRENT WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DI
104. r Technician Action Note sEOn SrtToe NA After scrolling completed Start Circuit Press Start metre NA roi NA Mxeragtatortumig gt NA Mxeragiaortuming Three timer LEDs turn on and ip er Tes p SE 00 once 219 Tone Ne turn 5 47 Time Selection Tum ter knob p Ye N A N A xx xx is whatever value knob is set to Short Tone M C Key 02 01 Press M C Key While key is down 1020 P2 Key 03 02 Press P2 Key While key is down peo NA s NA SAVE Key po J Short Tone Three LEDs on timer turn off Test mode is pass automatically exited Disable Service Diagnostics Disabling Service Diagnostics Mode WARNING DISCONNECT THE x ELECTRICAL POWER TO THE S MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES 1 Remove the switch plate assembly from transmission case Do not disconnect wiring 2 Remove jumper from TP1 to TP2 3 Reinstall switch plate assembly 4 Reapply power to mixer F12536 Rev A December 2005 Page 70 of 88 MODEL 600 660 1 800 TIMER AND SWITCH PLATE ELECTRONIC TIMER UPGRADE KIT INSTALLATION INSTRUCTIONS WARNING DISCONNECT THE S ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES CAUTION Certain components in this system are subject to
105. r continues to operate through latch circuit A START switch N C contacts close energizing the LOCK solenoid through the latching circuit Bowl support is locked in the full up position B Mixer motor is energized until the following occurs 1 Timer reaches zero 2 Bowl guard is opened 3 STOP switch 1PB is pressed F12536 Rev A December 2005 74 of 88 MODEL H600 P660 L800 ELECTRICAL OPERATION CONTROL PANEL LAYOUT H600 AND L800 CONTOL PANEL LAYOUT SINGLE PHASE START TIMER STOP GEAR AME aen el INTERLOCK TRANSFORMER CONNECTIONS VOLTS CONNECT MOTOR TERM TRANSFORMER AND 200 230 FUSE BORED TB H2 TO L2 1 TO LI HEIGHT 2202280 H2B TO L2 WHEN TRANSFORMER IS NOT USED CONNECT WIRE IFB PI TO CON LI CONNECT WIRE IFB P2 TO CON L2 Li E CONTACTOR cq TI r o 6 THERMAL OVERLOAD UNIT OL LIFT loo 10 MOTOR Lol BOWL LIFT SWITCH 38 THREE PHASE START TIMER STOP GE R TRANSFORMER CONNECT ONS INTERLOCK VOLTS CONNECT o BOWL LIFT 200 230 as FUSE BOARD GUARD H2 TO 12 MOTOR TERM 400 460 60 H2 TRANSFORMER AND yea HE IGHT mum H3B TO L1 FUSE BOARD H2B TO L2 380 415 2 TO H3A WHEN TRANSFORMER 15 NOT USED CONNECT WIRE 1FB P1 TO CON L 1 CONNECT WIRE 1FB P2 TO CON L2 o o 11 12 15 T 5
106. r fan by hand 3 Mark the exact spot of the adjusting sleeve on the casting where the motor shaft begins to bind 4 Turn the adjusting screw counterclockwise until the motor shaft begins to bind A Mark the exact spot of the adjusting sleeve on the casting 5 Measure the distance between the two extremes and mark the halfway point on the casting 6 Turn the adjusting screw midway between the top location and the halfway point This will position the worm gear for best operation CAUTION For the following step be careful not to drill through the sleeve into the bearing 7 Spot the adjusting sleeve for the set screw A 1 32 into the sleeve using the set screw hole as a guide 8 Reinstall the set screws to lock the adjusting sleeve in place Page 24 of 88 MODEL H600 P660 L800 TRANSMISSION CLUTCH SHAFT ASSEMBLY CHANGES Models H600 L800 P660 A stepped spacer contacting the inner race of the lower clutch bearing was used on H600 L800 P660 mixers from January 2000 to January 24 2001 Mixers after this date were built using the original flat spacer If found on a mixer the stepped spacer should be replaced whenever servicing the clutch shaft assembly Consult the parts catalog for correct part number OBSOLETE STEPPED SPACER Model P660 The lower gear assembly in early production P660 mixers was found to be rubbing the spring and producing an audible click in the transmission Those earl
107. removal 7 Perform handwheel ADJUSTMENT 8 Check mixer for proper operation Handwheel Adjustment NOTE The handwheel is adjusted by loosening or tightening the stop nut 1 Adjust stop nut until there is a 1 16 gap between handwheel hub and clamping ring 6639 MANUAL BOWL LIFT SCREW ASSEMBLY Removal and Disassembly ky WARNING DISCONNECT THE ELECTRICAL POWER TO THE Css MACHINE AND FOLLOW LOCKOUT S TAGOUT PROCEDURES CAUTION Lower the bowl support to its lowest position before attempting to remove the lift screw assembly 1 Remove TOP COVER ASSEMBLY 2 Remove pedestal apron 3 Remove mixer MOTOR 4 Bend down tab s on the lock washer that are fitted into the notches of special bearing locknut 5 Hold the bowl lift handwheel to keep the lift Screw from turning and remove the special bearing locknut Page 57 of 88 SPECIAL T BEARING LOCKNUT 7 Turn the lift screw down by hand until the top of the lift screw clears the transmission case and remove the lift screw 8 Remove lift screw gear washer and bearing SPECIAL BEARING LOCKNUT EFE GEAR WASHER BEARING 3 LOI een CASE MACHINED SURFACE LIFT SCREW 6653 F12536 Rev A December 2005 MODEL 600 660 1800 BOWL SUPPORT AND LIFT SYSTEM Reassembly and Installation 1 Lubricate internal threads of bowl lift nut with Lubriplate 630AA bef
108. s removed from mixer note the number of gaskets used between reed Switch housing and transmission case Clean old gasket material from transmission case opening before reinstalling bowl guard housing New Style 1 Remove bowl guard switch housing and reed Switch from transmission case as an assembly INNER TUBING PLASTIC NUT NOT PRESENT ON ALL SWITCHES 2 Disconnect reed switch wires from wiring harness 3 Remove gasket and clean old gasket material from transmission case inspection hole opening before reinstalling bowl guard housing INSPECTION HOLE 4 Loosen set screw in reed switch housing and remove inner tube and reed switch Installation Old Style NOTE If entire bowl guard switch assembly was removed when installing assembly use a gasket that is in good pliable condition free of cracks and cuts Increasing the amount of gaskets between the old style reed switch housing and splash guard is the method used for adjusting reed switch actuation 1 replacement switch wires into pedestal area using wire that was left to be used as a pulling aid 2 Route wiring up along side of pedestal and secure with P Clip A Continue routing wires to controls Page 12 of 88 7 8 MODEL 600 660 1800 BOWL GUARD Position reed switch into bowl guard housing and secure into place with screw and locknut Do not over tighten hardware Reinstall BOWL GUARD ASSEMBLY and perform Adjustment Ol
109. skets 2 Remove fill plug from top cover of transmission F12536 Rev A December 2005 FILL PLUG 3 Service mixer with oil Mobile Gear 634 A Verify oil level is correct by observing oil level through sight glass B Apply power and turn mixer ON Look inside oil fill hole 1 photo 6568 C that oil is flowing from the delivery tube across the gear face 1 photo 6602 NOTE If oil is not flowing shut mixer OFF and refer to MECHANICAL SERVICE found under TRANSMISSION D Replace fill plug and top cover Page 6 of 88 MODEL H600 P660 L800 GENERAL Planetary WARNING DISCONNECT THE x ELECTRICAL POWER TO THE 2 MACHINE AND FOLLOW LOCKOUT N SS 5 TAGOUT PROCEDURES NOTE On mixers manufactured with an oil pump the planetary has its own oil supply Due to the relatively small volume of oil 6 FI oz it is advisable to change it more frequently than the transmission oil depending on mixer usage 1 Drain the oil A Remove bowl guard assembly drip cup on mixers without bowl guard B Rotate planetary until drain plug is accessible C Place a container under planetary to collect used oil D Remove planetary oil drain plug and drain oil PLANETARY FILL PLUG PLANETARY DRAIN PLUG E Replace drain plug 2 Replacing oil A Remove oil fill plug B Pour 6 fl oz oil into the p
110. t a bowl lock kit should also be added at the same time Check NOTE The bowl guard if equipped must be closed in order to perform the bowl height sensing check 1 Lower the bowl support more than 1 4 from the maximum up position A Push and hold the start button the mixer should run B Release the start button the mixer should stop 2 Raise bowl until it stops in the full up position A Push and release the start button mixer should run B Lower bowl from up position while mixer is running Mixer should stop running when bowl support is lowered more than 1 4 from full up position F12536 Rev A December 2005 Adjustment Stop Screw Located on Left Side of Lift Screw photo 6630 STOP SCREW 1 Verify BOWL TO BEATER CLEARANCE is correct Remove pedestal apron 3 Raise bowl lift up until top of stop screw is 1 4 from bottom of transmission housing SWITCH ACTUATOR H600 Shown 6632 A 600 660 Adjust bowl switch actuator to operate the switch closing the N O contacts at this point Snug the locknuts B 1800 Allow actuator to rest on jam nut and snug the locknut against the bowl Switch actuator H600 P660 L800 6633 4 Apply power to machine and perform BOWL HEIGHT SENSING Check A Repeat adjustment if necessary 5 Reinstall pedestal apron Page 54 of 88 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM
111. tor on number 4 HIGH speed and start the mixer With the mixer running depress the stop button and hold The brake should stop the planetary in approximately one revolution 45 of 88 12536 Rev A December 2005 MODEL 600 660 1 800 MOTOR Should the brake need adjusting to increase or decrease the brake action use the following procedure Increasing Braking Action 1 Remove the top cover 2 Discharge the capacitor on power bowl lift PBL models 3 Inspect the brake lining 1 photo 10274 for excessive wear Should the brake lining be worn through to the brake band replace the brake band assembly refer to MECHANICAL SERVICE Brake Unit 4 If there is sufficient brake lining place the brake spring in the lowest hole 2 photo 10274 of the brake band 5 Should more braking action be required loosen the four mounting screws 5 photo 10274 on the solenoid and raise it 10274 6 Re tighten the mounting screws and recheck the braking action 7 If the above adjustments do not increase the braking action sufficiently replace the brake spring 8 Replace top cover 9 Check mixer for proper operation Decreasing Braking Action 1 Remove top cover 2 Discharge capacitor on power bowl lift PBL models 3 Place the brake spring in the top hole on brake band 3 photo 10274 F12536 Rev A December 2005 Page 46 o
112. transmission case Check bowl lift for proper operation Reinstall mixer MOTOR TOP COVER ASSEMBLY and pedestal apron 7 Check mixer for proper operation F12536 Rev A December 2005 Bowl Lift Nut Assembly Adjustment 1 Start with bowl support in its lowest position Snug bowl lift nut assembly cap screw Install bowl into place on bowl support m od m Weight bowl to simulate a load and raise bowl support to its highest position NOTE As threaded surface of bowl lift nut assembly wears the tendency to back drive will increase Tighten cap screw as necessary to prevent back driving 5 With mixer in an idle state check for bowl support back driving by exerting downward force on bowl support A If back driving exists tighten bowl lift nut assembly cap screw until back driving is eliminated Do not over tighten cap screw 6 Lower and raise bowl lift to check operation Bowl support should raise and lower without too much resistance A lift is difficult to operate loosen bowl lift nut assembly cap screw slightly B Raise bowl support and recheck for back driving C Repeat adjustment until bowl support can be raised and lowered without too much resistance and there is no back driving Check BOWL TO BEATER clearance Reinstall pedestal apron Check mixer for proper operation POWER BOWL LIFT MOTOR AND TRANSMISSION CHANGES The Hobart built motor originally used for the power bowl l
113. uilt mixers Consult the Catalog of Replacement Parts F18797 H600 amp L800 and F18835 P660 for kit part number information Refer to UPGRADE KIT INSTALLATION INSTRUCTIONS in this section for instructions ELECTRONIC TIMER OPERATION PROGRAMMING NOTE At idle the timer display shows that no time has been set TIMER DISPLAY P1 KEY iz CONTROLLERS KNOB ne SAVE KEY je CLEAR INDICATOR jj KEY START BUTTON STOP BUTTON KEYPAD AND PLATE Al 1727 Page 65 of 88 F 12536 Rev A December 2005 MODEL 600 660 1 800 TIMER AND SWITCH PLATE Timer Keys Programming Function if mixer is not running PT umm n Contains up to four preset times Displays each preset time sequentially P2 ae date Contains up to four additional preset times Displays each preset time sequentially Knob Changes the time as indicated by the display Save Replaces the preset time with the indicated time Clear Returns to idle from a programming function Continuous Mixing 1 Begin from the idle display Turn knob if necessary to set display 2 With bowl guard closed and the bowl in the up position press START to begin mixing The M C indicator will be lit and the total mixing time will be indicated minutes and seconds 3 Press STOP when mixing is complete The M C indicator light goes off and the idl
114. watching the meter TAGOUT PROCEDURES 1 capacitor is good the meter should indicate some resistance value not important then the 1 Check capacitor by substituting a known good indicated resistance value will slowly capacitor in its place An alternate way to check nse the capacitor is with a meter set to measure 2 Ifthe capacitor is shorted the meter resistance as follows although this check is not will show a short circuit condition or always reliable low resistance value This value is NOTE Always discharge the capacitor before typically just a few ohms making this check with an ohmmeter 3 Ifthe capacitor is open the meter will A Discharge capacitor by placing the blade of indicate an open circuit no a screwdriver across the terminals resistance B Remove the leads from the capacitor terminals F12536 Rev A December 2005 Page 50 of 88 MODEL 600 660 1 800 BOWL SUPPORT AND LIFT SYSTEM BOWL SUPPORT AND LIFT SYSTEM NOTE On L800 pry the spring seat up and off the pins TECHNICAL NOTES In July 2003 the bowl lift nut changed on production H600 L800 P660 mixers to prevent the bowl support from back driving bowl creep when the bowl support is raised and the mixer is in an idle state NOTE The bowl lift nut assembly only addresses back driving when the mixer is idle Should back driving occur during operation service the bowl lock if equipped or install a bowl
115. y mixers had a washer added between the spring and shock absorber compressor to provide clearance between the gear and spring The lower gear received a chamfer edge to provide the necessary clearance and also eliminate the extra washer Should a lower gear with a chamfer edge be installed into a mixer that had the extra washer previously installed between the spring and shock absorber remove the washer from the worm gear shaft assembly Page 25 of 88 GEAR CLUTCH SHAFT BEARING RETAINING RING D 6385 INTERFERENCE SPRING LOWER GEAR ASSEMBLY 6607 Model P660 The clutch shaft assembly was redesigned in February 1994 to increase shaft strength If an original or second design clutch shaft is ordered a replacement kit will be sent for those parts that will not fit onto the last design shaft Use the following illustration to identify the clutch shaft F12536 Rev A December 2005 MODEL 600 660 1 800 TRANSMISSION RETAINING RING GROOVE ORIGINAL DESIGN SECOND DESIGN IDENTIFICATION GROOVE RETAINING RING GROOVE LAST IDENTIFICATION GROOVE 6608 Model P660 In March 1988 the key located at the top of the clutch shaft in the upper gear assembly was changed to a hardened key to eliminate nuisance shearing of the key Keys listed in the parts catalog are of a hardened type DISASSEMBLY H600 L800 1 Remove spacer 1

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