U431 Owner`s Manual (Serial _`s 0 – 17977)
Contents
1. ITE STOELTING PN QTY1 QTYe DESCRIPTION 01 08 61423 2 2 SPEED REDUCER 5 24 REDUCTION e 3177251 1 1 DRAIN TRAY SUPPORT BRACKE 3 644542 8 8 SCREW CAP 3 8 24 X 1 HX HD 644985 le le SCREW 1 2 13UNC X 7 8 HX 3 766997 12 12 WASHER SHAKEPROOF 1 2X7 8 6 767226 WASHER FLT 1 2X1 3 8xX9 16HV ZP 7 3177219 1 1 REDUCER SUPPORT BRACKET 8 2147034 2 2 PULLEY 7 00 PD MACHINED 9 4177217 1 1 EVAP WELDMENT amp FOAMED 0 4177208 1 1 FRAME WELDMENT 11 2177229 1 1 WATER VALVE BRACKET e 763181 2 2 VALVE WATER 3 8NPT 3 369833 6 6 FITTING BARBED 1 2X3 8 BRASS 4 538351 16 16 U 9 16 18 CKING FLANGE 422156 2 2 GR ET KIT WITH SLEEMES 6 728190 001 001 RD SEAL TAPE 5280 RUI 7 644371 8 8 SCREW CAP 5 16 18 X 1 3 4 HX 8 767211 8 8 WASHER FLAT 5 16 7 8 3 8 140 3 282029 2 COMPRESSOR 208 230 602. ITEM S THEL TING PN QTY DESCRIPTION 820172 001 ADHESIVE CTITE 21 2 482004 3 KNOB 3 228097 6 NUT FULL 10 24 ZP 4 3156992 1 CAM CENTER D 3157854 CAM RIGH 6 3195 8239 EF 7 766948 6 WASHER SHAKEPRUOF 10 ZINC 8 766430 6 WASHER RDUNL 9 21569397 1 ANDLE CENTER 0 2156999 1 ANDLE 11 2137850 1 ANDLE RIGH e 2216193 3 SPACER BUSHING E 1154703 3 WASHER 4 625440 3 RING RETAINING 100 DIA 3 ES 3 NLIB 26 AUGER PARTS Drawing Part Index No Number Qty Description 1 2104552 1 Auger Front Support 2 149003 1 Front Bearing 3 381804 6 Plastic Flight 4 694255 6 Spring 5 4151178 1 Auger 6 624678 1 Rear Seal O Ring 7 1151859 1 Rear Seal Adaptor 8 667868 1 Rear Seal MISCELLANEOUS PARTS Description Part No Haynes Spray 12 oz 340 grams 508017 Petro Gel Tube 4 oz 113 grams 508135 Spline Lubricant 2 oz 57 grams 508048 Brush 4 x 8 x16 10cm x 20cm x 40 5cm 208135 Brush 2 5 x 4 x12 6 5cm
3. 4 2 4 Installing Permanent Wiring scr 4 2 5 MX ee MEN 5 Section 9 3 1 Safety Precautions ais 9 3 2 Operating Controls and Indicators 9 3 3 10 3 4 Initial Freeze Down and Operation 11 3 5 A NR ga 11 3 6 Operation of Mix Pump euere a 11 3 7 Removing Mix from the Freezer 12 3 8 Cleaning the Freezer nee eo 12 3 9 Disassembly of Freezer Parts 12 3 10 Routine Cleaning risa 13 3 11 Mix Pump Cleaning esse 14 3 12 Sanitize Freezer Parts naa 14 3 13 Assembly of Freezer ui 14 SBGIIO daa dd 17 4 1 Freezer Adjustment e e aa a ara D A 17 4 2 Product Temperature Adjustment a 17 4 3 Overrun Adjustment IILI een 17 4 4 Mix Pump Hose Reposition nana enne 18 4 5 Mix Pump Hose Replacemeni iii cds 18 4 6 Cab Temp 000 18 4 7 Drive Belt Tension Adjustiment anna ee 18 4 8 Condenser Cleaning Air Cooled Freezers 19 4 9 Preventative Maintenance ae 19 4 10 Extended Storage ek een 19 4 11 Troubleshoot
4. 0 44 14 Figure 24 Sbringinstallall oii tesa 15 Figure 25 Front Door Assembly een 15 Figure 26 Potentiometer escritas 17 Figure 27 Overrun Adjusiment au 17 Figure 28 Temperature Control Cab ae 18 Figure 29 BeltAdjustment nee aan 19 SECTION 1 INTRODUCTION 1 1 DESCRIPTION The Stoelting U431 floor model freezer is pressure fed The freezer is equipped with fully automatic controls to provide a uniform product The freezer is designed to operate with almost any type of commercial soft serve or non dairy mixes available including ice milk ice cream yogurt and frozen dietary desserts This manualis designed to assist qualified personnel and operators in the installation operation and maintenance of the Stoelting Model U431 pressure freezer 26 3 4 68 INSIDE DIMENSIONS WIDTH 23 58 HEIGHT 26 3 4 68 DEPTH 20 00 51 1 65 3 4 167 49 1 2 RIGHT SIDE Figure 2 Specification 1 JUNCTION _ BOXES 3 un Do NA WATER NA s WATER INLET OUTLET 1 2 SPECIFICATIONS DIMENSIONS Width 26 3 4 68cm Depth 39 3 4 101cm Height 65 3 4 167cm WEIGHT 925lbs 419 5 kg 975lbs w Crate 442 kg 1 PH 3 PH 1 PH 3 PH TRICA Left Side Right Side Left Sid
5. 42 STOELTING A Polar Ware Company WARRANTY SOFT SERVE SHAKE FREEZERS 1 Scope Stoelting LLC warrants to the first user the that the freezer cylinders hoppers compressors drive motors speed reducers auger and auger flights of Stoelting soft serve shake freezers will be free from defects in materials and workmanship under normal use and proper maintenance appearing within five 5 years and that all other components of such equipment manufactured by Stoelting will be free from defects in material and workmanship under normal use and proper maintenance appearing within twelve 12 months after the date that such equipment is originally installed 2 Disclaimer of Other Warranties THIS WARRANTY IS EXCLUSIVE AND STOELTING HEREBY DISCLAIMS ANY IMPLIED WAR RANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE 3 Remedies Stoelting s sole obligations and Buyer s sole remedies for any breach of this warranty shall be the repair or at Stoelting s option replacement of the affected component at Stoelting s plant in Kiel Wisconsin or again at Stoelting s option refund of the purchase price of the affected equipment and during the first twelve 12 months of the warranty period deinstallation reinstallation of the affected component from into the equipment Those obliga tions remedies are subject to the conditions that Buyer a signs and returns to Stoelting upon installa
6. 8 4 AIH UI 91 11 dVNS DNIHSAS estee 2 INAV C380ddM 21515101944 INAV cUvOdNM 1 820081 JNIZ OI DUJITAV 4 5 876994 Cl Hd Be X ver dyl MAJIJI 1 015 9 gl JIV Id 8 4 4 e jHSV 076994 XH e X 591 0 vu que 01619 01 8 6 X 2 81 91 5 MJINI s JS 6 JJNV 14 10 2 211 81 91 S 568865 3 Vela amp 1284 26799 L SZ X 01 idad a W SEDES 9 lt XH I X 81 91 5 dv Ada ANA E S LETJA 31V la DNILNAOW SUI 1 Cay Old dJADUSD 2 11 1 86 llc SN Id 68091 NddU L1 09 0 5c 80c a 95836 B 85091 0 1 3 AdaUrZL 1 09 05 806 6 8 SANS 58 506 dHc Bees 1 NLIILdls 2S ALO Nd 13015 WALI 37 ITE STOEL TING PN TY DESCRIPTION Egi 1 INGE WER LEFI 2 442192 L 1 INGE UPPER 3 5177231 1 ANDI CAB DOOR 4 644093 4 SCREW CAP 1 4 20 X 1 2 HX 647671 4 SCREW MACH 10 24 X 1 2 FL 6 4177232 1 DOUR 647653 4 SCREW MACH 10 24 X 3 8 TRS 8 284200 10 1 PLUG H 50 DIA MTG HOLE 38 NOTCH DOW
7. ASSV SS3OD8d amp 559 3IDIVHISIA 1437 3001 003 ASN ASSY XJ NYH XIJ 193 1431 ASSV 3NI 1 NOILINS 3015 1331 DN pea t v dN 8 6 31NA 2 18159 IDLVAIDIVAS EVE 200566 91 N3IVA N3SN3I VOLVSC GI 11DD2 8IV 83SN3 280 82 vi Hg 09 0 2 802 Y 144 2 920282 1 Hdl 09 0 2 802 Y el d el I3AVUJ 8 IN3W 13 dVA3 Zeile 1 920 X2 0 3801 112 AS Totle2 OI 2283 Add JA VA 8 6292 6 NOL 2 1 AXL SATIVA 2 PG 2 8 TIDONG JA IVA 2 GG 9 YIOLHDIS AOLVOICN 2 6008S 9 8317114 NALA 2 800275 G 18813559 38 Y 2 y VO FIEVLSNFAV NOISNYAX3 JA INA 2292 44155344 2 014814 2 ASSV ONILNNOW gt JS 3 8108 2 NDILdIMIS I Al Nd ONIL 71301 WALI
8. 56 820172 001 001 ADHESIVE LOCTITE 242 31 57 538296 4 4 NUT HEX 10 24 X 3 8 SS 58 223005 2 2 BUSHING SNAP 1 2 ID 625 HOLE 59 422057 2 2 GROMMET RBR 3 8X5 8X1 4X1 16 60 717917 5 2 2 SWITCH AIR PRESSURE 61 538335 10 10 NUT HEX 1 4 20 X 7 16 STL ZP 62 3177221 2 2 PLATE PUMP MOUNTING 63 522229 2 2 PUMP MOTOR ONLY 64 266018 2 2 CLIP ADHESIVE BACKED J 65 778027 2 2 WRENCH ALLEN 5 32 X 3 0 LG 66 647915 10 10 SCREW MACH 1 4 20 X 7 8 TRS HD SSTL 67 422074 1 1 GROMMET RUBBER BLACK 68 558113 2 2 PAN MIX CONTAINER 69 3177262 2 2 COVER FRONT 70 3177229 2 2 COVER REAR 71 744272 1 1 DRIP TRAY CAB 35 A E d x O 2 C 000 5 n n P f im jus 4 A
9. 19 mmo lt PLACE ITEMS lt 19 gt amp 23 ON BACK SIDE OF JUNCTION BOX COVER GENERAL MARKET ONLY 23 JUNCTION BOX covers CO NOTE PLACE ITEM lt A IN SIMILAR LOCATIONS ON OPPOSITE SIDE OF FREEZER amp DN CONDENSER BRACKET DECAL ORIENTATION NOTE Figure 3 Decal Locations 3 PLACE ITEM DN INSIDE OF FREEZER ON REDUCER SUPPORT BRACKET BETWEEN BELTS ae ER AR 00 ITEM STOELTING PN QTYi 0172 DESCRIPTION 03 04 1 324801 e DECAL MIX LOW 18 324584 1 1 DECAL ADEQUATE VENTILATION 3 2 324798 2 2 DECAL CLEAN DFF SERVE SWITCH 19 324158 2 2 DECAL COPPER CONDUCTORS ONLY 3 324141 1 1 DECAL CAUTIHN RHTATING BLADES 20 324106 e DECAL CAUTION WIRING MAT L 4 723526 1 1 TAG READ MANUAL amp ALL DECALS 21 324107 4 4 DECAL CAUTION MOVING PARTS 5 324346 3 3 DECAL HAZARDOUS MOVING PARTS 324566 2 E DECAL WIRED ACCORDING TO 6 324393 1 1 DECAL STHELTING SWIRL LOGO 23 324015 DECAL 2 1 1 4 BLK DN WHITE 7 324800 1 1 DECAL CAB ON OFF 24 723552 e e TAG CAUTION SUPPLY VOLTAGE 8 324799 PUMP ON OFF 26 324804 1 1 DECAL GM HEADER STOELTING SWIRL 9 324208 2 e DECAL REFRIG LEAK CHECK 26 324803 1 1 DECAL GM HEADER STOLETING LOGO 10 324509 1 1 DECAL CLEANING SS amp SHAKE 26 324806 1 1 DECAL A amp W HEADER FOR 0431 8 4231 11 324103 DECAL CAUTIHN RHTATIN
10. 2 2 COVER FRONT oo 23177229 2 2 COVER REAR 56 744272 1 1 DRIP TRAY 000000040402 2220200005 22222222 5 2222222 5522222222 ara mom E age Ness LEY BEX 82 6E Gr 34 ITEM STOELTING PN 1 QTY2 DESCRIPTION 01 02 1 614231 2 2 SPEED REDUCER 5 2 1 REDUCTION 2 3177251 1 1 DRAIN TRAY SUPPORT BRACKET 2 644542 8 8 SCREW CAP 3 8 24 X 1 HX HD 4 644985 8 8 SCREW CAP 1 2 13UNC X 7 8 HX 5 766997 8 8 WASHER SHAKEPROOF 1 2X7 8 6 767226 4 4 WASHER FLT 1 2X1 3 8X9 16HV ZP 7 3177219 1 1 REDUCER SUPPORT BRACKET 8 2147034 2 2 PULLEY 7 00 PD MACHINED 9 4177217 1 1 EVAP WELDMENT amp FOAMED 0 4177208 1 1 FRAME WELDMENT 1 522833 4 4 FAN MOTOR 2 538280 16 16 48 32 3 766948 16 16 WASHER 10 SHAKEPROOF 14 538355 16 16 NUT HEX 5 16 18 LOCKING FLANGE 5 422156 2 2 GROMMET KIT WITH SLEEVES 6 4177262 1 1 CONDENSER SHROUD 7 644371 8 8 SCREW CAP 5 16 18 X 1 3 4 HX 8 76721 8 8 WASHER FLAT 5 16 7 8X3 8X14GA 19 282025 2 COMPRESSOR 208 230 60 1PH 20 282026 2 COMPRESSOR 208 230 60 3 21 64908 3 3 SCREW DRILL
11. 8 18 X 1 2 22 522869 2 DRIVE MOTOR 3PH 25 522844 2 3 DRIVE MOTOR 1PH SER 0 16058 23 522856 2 DRIVE MOTOR 1PH SER 16059 PLUS 24 152294 4 4 BELT V 39 2 01 X 38 3 P L 25 3171824 4 4 FAN MOTOR BRACKET 26 538297 16 16 NUT 10 24 ZC 27 162067 4 4 FAN BLADE 9 28 4177261 2 2 CONDENSER BRACKET 29 644091 14 14 SCREW CAP 1 4 20 X 1 2 HX HD 30 284082 1 1 CONDENSER 31 2177069 2 2 BLOCKOFF PANEL 32 538395 4 4 NUT HEX 1 2 13X3 4X5 16 ZP 33 538335 6 6 1 4 20 SPIN L N ZC 4 463010 8 8 THREADED INSERT 1 4 20 5 4177070 1 1 UPPER BLOCKOFF PANEL 6 222997 1 1 BUSHING SNAP 9 32 ID 3 8 HOLE 37 584200 04 1 1 PLUG HOLE 375 DIA MTG HOLE 38 766964 12 12 WASHER SHAKEPROOF 1 4 ZINC 39 766456 4 4 WASHER ROUND 5 8X9 32 STEEL 40 M820323 001 001 TAPE INSUL 1 X 1 4 IN THICK 41 766940 16 16 WASHER SHAKEPROOF 8 ZINC PLATE 42 M820172 001 001 ADHESIVE LOCTITE 242 31 43 538928 4 4 NUT SPEED 1 4 20X63 64X1 2 44 714006 001 001 1 X 100 ROLL RUBBER 45 644106 4 4 SCREW 1 4 20 X 5 8 HX HD 46 714003 001 001 3 8 X 100 ROLL RUBBER 47 628007 5 1 8 48 524091 5 5 MOUNT TIE 49 647655 6 6 SCREW MACH 10 24 X 3 8 TRS HD 50 3177257 1 1 CAB EVAPORATOR ASSY 51 2177235 1 1 BRACKET DRIP TRAY CAB 52 850004 ASREQ ASREQ RTV DOW CORNING 754 55 980178 5 ASREQ PERMAGUM 54 524724 2 2 DECAL TUBE FEED 55 368102 2 2 FILTER
12. Add refrigerant Refrigeration Service Keep hopper 1 3 to 1 2 full of mix Remove side panel and locate EPR valve Loosen locknut and turn screw CCW 1 4 turn Retighten locknut Check hopper mix temperature after one hour Adjust another 1 4 turn if necessary Remove side panel and locate EPR valve Loosen locknut and turn screw CW1 4 turn Retighten locknut Check hopper mix temperature after one hour Adjust another 1 4 turn if necessary See mix pump manual MIX 1 PUMP MOTOR DOES NOT RUN Power to pump is off Supply power to pump Low voltage Check for low voltage Mix pump hose jammed inside black cover clamp Disconnect pump from power source Remove four cover clamp thumb screws Separate cover clamp halves and remove outer half Remove jammed hose Re install cover clamp and tighten four thumb screws securely Allow motor thermal overload to reset See Sec 4 2 for hose replacement Do not use jammed portion of hose Pump motor overloaded Allow internal thermal overload to reset determine overload cause and repair Pressure switch on pump is defective Check mechanical operation and continuity of pressure switch Defective motor capacitor Check motor amperage draw and or capacitor Replace motor or capacitor Defective toggle switch Check continuity repair or replace 2 PUMP OPERATES BUT CYLINDER WILL NOT FILL NOTE 1 A PROPERLY WORKING PUMP WILL FILL AN 8 OZ CUP WITH MIX IN ABOUT 9 S
13. SHROUD 6 77242 SIDE PANEL 7 177243 SIDE PANEL RIGHT 3 3177244 HEADER PANEL 9 77245 TOP PANEL WATER COOLED 0 317 846 DRIP TRAY SUPPORT 11 1154886 SIDE PANEL COVER 3170804 GASKET INSULATION 3 744252 DRAIN TRAY 4231 4 4177222 PANEL AIR COOLED gt 225533 2 NUT HEX 1 4 20 X 7 16 SIL ZP 6 314290 COVER SQUARE 4IN F R OUTLET BK 7 647653 18 SCREW MACH 10 24 X 3 8 TRS HD 8 M820309 001 SEALANT DOW CORNING ALUMINUM 9 647899 40 SCREW MACH 174 20 X 378 TRS HD 20 14003 001 STRIP 3 8 WIDE CURK RUBBER el 338917 6 NUT SPEED 10 24 13 16 3 8 31 ev IG r ES 75 TE LE 66 96 86 82 12 SN3QNHO LHDIA Se I S3ISNIONDO 1431 62 32
14. measure ofthe amountofair blendedinto the mix Overrun can be expressed in terms of the amount of weight loss for a given volume For example if a pint of liquid mix weighs 18 ounces 510 grams and a pint of frozen product with air added weighs 12 ounces 340 grams the overrun is said to be 50 percent 18 oz 510 grams 12 oz 340 grams 6 oz 170 grams 6 12 x 100 50 The overrun can be checked by placing a one pint container on an ice cream scale and zeroing outthe scale Then fill a one pint container with frozen product The container should be filled over the top and leveled with a straightedge The product should not contain any air pockets When weighed on an ice cream scale one pint 473 milliliters of product should weigh 12 to 18 ounces 340 to 368 5 grams The mix pump has been preset atthe factory to produce a product with approximately 4096 overrun Because of differences in mix formulation temperatures and baro metric pressure this figure may vary It will be necessary for approximately 2 gallons 7 5 liters of mix to be pumped thru the freezer before changes in the product are noticeable due to adjustments in overrun Overrun is controlled by the length of the air compressor piston stroke within the piston cylinder Lengthening the stroke within the cylinder will increase overrun Con versely shortening the stroke will decrease overrun To perform an overrun adjustment refer to the following proc
15. or pick up hose side left of black cover 3 Gently push the hose into the black cover until it begins to feed Figure 6 Mix Hose Installation 4 Allow the hose to feed itself thru the pump until 6 15cm remains on the entering side 5 Turn pump off 6 Connect mix pump hose to pickup hose adapter using small hose clamp CAUTION DO NOT TWIST MIX PUMP HOSE 7 Turn pump on 8 Allowremaining 6 15cm of tubing to feed thru pump until hose adapter prevents further feeding 9 Turn pump off 10 Connect free end of mix pump hose to 4 way Tee as shown in Figure 7 When all connections are complete the 4 way Tee must be lower than the black pump housing Figure 8 ATE lt Eid b w Xiao Connect 1 2inch 12 7mm 1 0 plastic food grade tubing to check valve and then to the mix con tainer Observe check valve flow arrow Secure with hose clamps Then place assembly thru hole in cover and install retainer clip Figure 9 Connect 1 2 inch 12 7mm plastic food grade tubing between the large port of air mix tee and refrigerated mix transfer line Secure with large hose clamp or equivalent Figure 9 PAN CAUTION AIR MIK TEE MUST REMAIN BELOW THE BLACK COVER CLAMP IF THE TEE IS ABOVE THE PUMP MIX WILL DRAIN TO THE AIR COMPRESSOR RESULTING IN PUMP DAMAGE D Connect mix low cords Figure
16. the mix pump motor will be actuated to pump mix into the freezer cylinder When the set pressure is reached the mix pump will shut off automatically When the switch is placed in the OFF position the mix pump will be inopera tive NOTE The mix pump motor is equipped with an internal overload that will kick out when the motor is over loaded Consult the trouble shooting section for corrective information The internal overload will automatically reset after cooling If the condition con tinues contact a qualified service person The pump hose mustbe repositioned every 1 2 weeks or 60 hours of operation Failure to comply will result in reduced mix pump liquid capacity dispense stoppage popping and possible mix pump hose leakage Find a system that works for you Operating until hose breaks shortens pump life causes downtime and in creases cleaning costs A Mix Operation The peristaltic mix pump contains one continuous mix pump hose When looking at the face of the peristaltic mix pump the left side of the hose is the suction or pickup The right side of the hose is the discharge Mix is drawn up the suction side of the hose and transferred thru the discharge side to the freezer Figure 15 Air Operation The aircompressor operates concur rently with the peristaltic mix pump Air enters thru a check valve on the piston downstroke The air is discharged thru a second check valve on the piston upstroke The air and mix jo
17. the manufacturer s instructions A Daily Checks Check for any unusual noise or condition and repair immediately B Month Checks 1 Check drive belts for wear and tighten belts if necessary Refer to Section 4 7 2 Check the condenser for dirt Refer to Section 4 8 WARNING NEVER ATTEMPT TO REPAIR OR PERFORM MAINTENANCE ON FREEZER UNTIL ALL MAIN ELECTRICAL POWER HAS BEEN DISCON NECTED 4 10 EXTENDED STORAGE Refer to the following steps for winterizing the freezer or for storing the freezer over any long period of shutdown time A Clean thoroughly with warm detergent all parts that come in contact with mix Rinse in clear water and dry all parts Do not sanitize NOTE Do not let cleaning solution stand in freezer barrel or mix pump during the shutdown period B Remove disassemble and clean the front door auger shaft and mix pump Leave disassembled during the shutdown period C Place plastic auger flights in a plastic bag with a moist paper towel This will prevent flights from becoming brittle if exposed to dry air over an extended period of time over 30 days D Forwater cooledfreezers that are left in unheated buildings or buildings subject to freezing the water must be shut off and disconnected Disconnect fittings at water valve inlet and water outlet lines at the freezer The fittings are located at the rear of the freezer Run the compressor for 2 3 minutes to open water valve Blow
18. 1 20 282026 i 2 COMPRESSOR 208 230 60 3PH 21 649081 2 3 SCREW DRILL amp TAP 8 18 X 1 8 22 922869 2 DRIVE R 3PH 23 522844 8 DRIVE M R 1PH SER 0 16058 23 320856 2 DRIVE M R 1PH SER 16059 PLUS 24 152294 4 4 BE 39e HL X 393 Pill 25 284104 e 2 WATER COOLED CONDENSER 26 538356 2 2 3 8 16 NUT HEX LOCKING FLANGE ZP 27 644522 2 2 SCREW CAP 3 8 16 X 3 4 HX HD 88 2177226 2 WATER CONDENSER BRACKE 29 644091 2 2 SCREW CAP 174 20 X 1 2 HX HD 30 644024 SCREW MACH 8 32 X 1 4 HX HD ZP 31 M820172 001 001 ADHESIVE 242 BLUE 32 338399 UT HEX 1 2 13 3 4 5 16 ZP 33 238335 2 2 1 4 20 SPIN L N ZC 34 714003 001 001 3 8 X 100 RULL RUBBER 35 628007 2 3 RIVET 1 8 36 524091 9 9 U IE 3 647653 6 6 SCREW MACH 10 24 X 3 8 TRS HD 38 3177257 1 1 CAB EVAPORATOR ASSY 39 2177235 1 BRACKET DRIP TRAY 40 850004 RTV DOW CORNING 734 41 M980178 ASREQ ASREQ PERMAGUM 4e 3e47e4 2 e DECAL TUBE FEED 43 538296 4 4 U EX 10 24 X 3 8 SS 44 422057 2 e GR RBR 3 8 5 8 1 4 1 16 45 717917 SV 2 e SWITCH AIR PRESSURE 46 238385 10 10 U EX 174 80 X 7715 81 ZP 47 3177221 2 2 PLATE PUMP UNTING 48 522229 e PUMP R Y 49 266018 e 2 CLIP ADHESIVE BACKED J 20 778027 2 e WRENCH ALLEN 5 32 X 30 LG 21 647915 10 10 SCREW MACH 1 4 20 X 7 8 TRS HD SSTL oe 422074 1 1 GR ET RUBBER BLACK 23 828118 e e PAN MIX C AINER 24 3177868
19. 3 32 70DUR UBING PLASTIC 1 21DX3 40D X 30 0 LG X PICKUP amp PROBE ASSY P HOSE 3 8 9 16 MIN MAX D RICANT PETRO GEL 40Z TUBES HEX 10 24 X 38 SS HECK VALVE OVER CLAMP C 95 gt DECALS O A NN N N N OQ N N N N N G N N N N N N Part Number 324200 324798 324797 324800 324799 324141 324509 324014 324686 723525 324106 324346 324107 324208 723552 723517 324548 324103 324151 324125 324242 324565 324158 324566 130000 324065 324803 324804 324806 Description H P Manual Reset Clean Off Serve Standby Serve Cab Off On Pump Off On Caution Haz Rot Blade Front Panel Cleaning Right Side Auger Rotation Evap Enclosure Rear Danger Start Auto on Evap Support between belts amp motors support brkt Winterizing Attach to water hose near bottom Caution Elec Wiring Mat ls must conform between water couplings one rear panel bottom Caution Haz Mov Parts on inside of mtr support brkt rear Caution Haz Mov Parts on cond bkt rear amp 2 on evap enclosure sides Attn Ref Lk Chk on evap enclosure sides Tag Supply volt inside J Box Card Inside one J Box ID Tags Back Panel Top Add Vent Back Panel Ctr Made in U S A Back panel Caution Rot Shaft on gearbox support bracket Field Connections J Box cover outside Danger Elec Shock J Box covers outside back pane
20. 9 rerd S00 DO lO FO m Mm BWM 00 gl STOELTING PN 756067 15 756204 40 264054 375867 264055 756088 20 1172864 696130 694247 762256 624607 756088 08 1151965 1177816 376016 538018 1111815 2177197 624676 756088 30 77272 64235 08135 38296 62258 71952 GN Ol Ol ro nro Moh A 00 0 rm BRM PM Mr BM MM PP n o e E amp DESCRIPTION UBING PLASTIC 1 41DX7 160D X 150 LG UBING NORPRENE FOOD 29 ID X 40 0 LG UP JAW TYPE 7 16 UNION 174 X1 2 BARBED JAW TYPE 11 16 BING PLASTIC 1 2IDX3 40D X 800 LG DY DUTER FOR VALVE CUMP 13 16X3 8X3 4 OUTLET CHECK MOL DE D gt 16X7 8X3 32 SPECIAL ING PLASTIC 1 8IDX3 4UD X 2 0 LG LVE BODY INNER AINLESS 4 WAY TEE 10 24 ACORN 18 8 STN STL CKING PLATE WASHER TTING PRESSURE SWITCH H 1 1 8 1 5 16 3 32 70DUR UBING PLASTIC 1 21DX3 40D X 30 07 LG IX PICKUP amp PROBE ASSY CLAMP HOSE 3 8 9 16 MIN MAX D LUBRICANT PETRO GEL 40Z TUBES UT HEX 10 24 X 38 SS CHECK VALVE COVER CLAMP Aa ITTING O gt U ale lt CI 1 gt U O U A a 1 00 GI lt YI lt UJ m lt Cc E Figure 7 Mix Pump 6 Figure 8 4 Way Tee Low Mix Cor Cover Container T Retainer Mix Clip
21. AL SUPPLY BEFORE REMOVING ANY ACCESS PANEL Spigot Switch When the spigot handle is opened the SPIGOT switch will start the auger drive and refrigeration systems When the spigothandle is closed the drive motor and compressor will remain on until the product in the barrel reaches the proper temperature Clean Off Serve Switch The CLEAN OFF SERVE switch is a three position toggle switch used to control the operation of the refrigeration system and auger When the switch is placed in the CLEAN position the refrigeration sys tem will be off and auger will rotate for cleaning When the switch is placed in the OFF position the refrigeration system and auger will not operate When the switch is placed in the SERVE position therefrigeration system and auger will operate auto matically The switch should be placedinthe SERVE position for normal operation Cabinet Off On Switch The CABINET OFF ON switch is a two position toggle switch When the switch is placed in the OFF position the lower cabinet refrigeration system will not run When the switch is placed in the ON position the lower cabinet refrigeration system will run until the preset temperature is reached then cycle ON and OFF to maintain that temperature Cab Indicator Light A flashing light indicates the cab OFF ON switch is inthe OFF position no refrigeration Place the OFF ON switch in the ON position for cab refrigeration Pump Switch The pump motor switch
22. ANING THE FREEZER NOTE The frequency of cleaning the freezer and freezer parts must comply with local health regulations After the mix has been removed from the freezer the freezer mustbe cleaned Toclean the freezer refer to the following steps Close the spigot and fill the barrel with cold tap water Place the CLEAN OFF SERVE switch in the CLEAN position Allow the water to agitate for approximately five minutes Open the spigots to drain the water Remember to place a bucket or container under the spigots to catch the water Repeat this process using a total of 2 gallons of cold tap water When the water has drained turn the CLEAN OFF SERVE switches to the OFF position Allow the freezer barrel to drain completely Repeat steps A through D using a mild detergent solution Repeat steps A through D using 120 to 130 F hot rinse water 3 9 DISASSEMBLY OF FREEZER PARTS A PLACE THE CLEAN OFF SERVE TOGGLE SWITCH IN THE OFF POSITION BEFORE DISASSEMBLING FOR CLEANING OR SERVICING Inspection for worn or broken parts should be made at every disassembly of the freezer for cleaning or other purposes All worn or broken parts should be replaced to ensure Safety to both the operator and the customer and to maintain good freezer performance and a quality prod uct Two normal wear areas are the auger flights and front auger support bushing Figure 16 Frequency of cleaning must comply with the local healt
23. CCELERATE BEARING WEAR 23 24 SECTION 5 HOW TO ORDER REPLACEMENT PARTS 5 1 HOWTO ORDER REPLACEMENTPARTS C Partnumber part name and quantity needed To assure the receipt of the proper replacement parts supply your serviceperson with the following information 5 2 PARTS LIST AND REFERENCE DRAWINGS The following lists and drawings will aid the user when Modelnumber of equipment 22 ordering paris or servicing B Serialnumber of model stamped on nameplate Stoelting P N Qty Description 1 1 2177427 Door Side ID Grooves 2 1158091 1 Actuator Door Safety 2177072 38mm 1 5 inch Spigot Ext 3 3159696 2 Spigot Outside 2177073 64mm 2 5 inch Spigot Ext 4 3158086 1 Spigot Center 2177074 76mm 3 inch Spigot Ext 5 624598 4 O Ring 232734 Rosette Cap 6 624664 1 O Ring CS 624677 Castle Top O Ring 7 625133 2 O Ring Silicone 1 2177588 1 Door w Pins CE 8 508135 AsReq Lubricant Petrogel 624654 O Ring Spigot Extension 9 482019 4 Knob Black 2158070 38mm 1 5 inch Spigot Ext 10 624614 2 O Ring CS 2159688 64mm 2 5 inch Spigot Ext 11 624520 2 O Ring 2157869 76mm 3 inch Spigot Ext 12 694200 2 Spring Comp 232732 Rosette Cap 13 482004 2 Knob NOTE 14 2110116 2 Valve Stem If you are replacing a front door without side grooves you mustorder the extensions and rosettes also 25
24. CTRICIAN REFRIGERATION SPECIALIST INCORRECTINSTALLATION WILL VOID THE WARRANTY AND MAY CAUSE SE VERE TO THE MACHINE MAY CAUSE PERSONAL INJURY Installation of the freezer involves moving the freezer close to its permanent location removing all crating set ting in place assembling parts and cleaning A Uncrate the freezer B Install the four casters Turn the threaded end into the freezer until zero threads are showing To level turn out casters no more than 1 4 maximum then tighten all jam nuts C freezer must be placed in a solid level position NOTE Accurate leveling is necessary for correct drainage of freezer barrel and to insure correct overrun D The freezer must have a minimum of 7 5cm 6 15cm high ambient conditions of space on all sides and 10 25cm at the top for proper circula tion AN CAUTION FAILURE TO PROVIDE ADEGUATE VENTILA TION WILL VOID WARRANTY E Water cooled freezers need an adequate water supply Install 1 2 12 7mm pipe or 1 2 12 7mm inside diameter copper water line to the freezer Connect water outlet to a drain using a 1 2 12 7mm inside diameter line Automatic washer hoses work well for final connections All water connections must comply with local codes Fig 4 A CAUTION FLUSH ALL WATER LINES BEFORE INSTALLA TION IN STORES WITH SEDIMENT IN WATER ADD SUITABLE FILTER OR STRAINER TO WATER INLET Figure 4 Water Electrical Connec
25. Cleaning Air Tube Figure 22 Removable Parts 3 12 SANITIZE FREEZER PARTS A Use a sanitizer mixed according to manufacturer s instructions to provide a 100 parts per million strength solution Mix sanitizer in quantities of no less than 2 gallons of 120 F water Allow the sanitizer to contact the surfaces to be sanitized for 5 minutes Any sanitizer must be used only in accordance with the manufacturer s instructions Placeallpartsinthe sanitizing solution then remove and let air dry C Using this sanitizing solution and the large barrel brush provided sanitize the barrel by dipping the brush in the sanitizing solution and brushing the inside of the barrel 3 13 ASSEMBLY OF FREEZER To assembly the freezer parts refer to the following steps NOTE Petro Gel sanitary lubricant or equivalent must be used when lubrication of freezer parts is specified NOTE The United States Department of Agriculture and the Food and Drug Administration require that lubri cants used on food processing equipment be certi fied for this use Use Lubricants only in accordance with the manufacturer s instructions A Assemble all O rings onto parts dry without lubri cation Then apply a thin film of sanitary lubrication to exposed surfaces of the O rings B Lubricate rear seal area on auger with a thin layer of sanitary lubricant Install the rear seal Figure 23 O ring Lubricate and install rear seal Figure 23 Rear
26. ECONDS NOTE 2 IMMEDIATELY AFTER A BAG CHANGE THE PUMP MAY BE UNABLE TO RE ESTABLISH IT S PRIME WITH THE SYSTEM AT OPERATING PRESSURE IN THIS CASE TURN THE PUMP OFF DRAW 2 3 PINTS TO REDUCE SYSTEM PRESSURE TO ZERO TURN PUMP ON PURGE REMAINING AIR IN MIX BAG AND PICK UP HOSE IMPORTANT Before connecting the pick up hose to the mix bag purge the mix bag of air to the extent possible Check valve is backwards OVERRUN TOO LOW OR NO OVERRUN Air compressor not pumping air OVERRUN TOO HIGH Mix pump hose service life is exceeded lt pu 21535 5 Q 8 518 212213 5 2 8 2 15 2 8 m Reposition replace mix pump hose Replenish mix supply Decrease overrun setting See Section 4 2 O O E EIE 513 213 o gt 2 2 O Pick up leg of mix pump hose is collapsing NOTE ALSO SEE 2 ABOVE 22 5 REPLACEMENT MIX PUNP HOSE WON T FEED THROUGH PUMP Feeding hose into discharge hole of mix pump cover Feed hose into pick up side of cover Hose ends not cut squarely Carefully cut hose end off squarely no tails Force feeding too quickly Gently and slowly assist feeding of hose up into pick up hose side of cover Pump motor not running Turn on motor switch Also see Item 1 above AIR EXITING MIX PICK UP HOSE 7 DISPENSED PRODUCT POPS Recent mix out condition Open spigot ful
27. G SHAFT 27 384346 DECAL CAUTION HAZARDOUS MOVING 12 324686 4 4 DECAL DANGER START 28 324797 DECAL STANDBY SERVE SWITCH 13 324107 DECAL CAUTIDN MOVING PARTS 29 384242 1 1 DECAL TEMPERATURE CONTROL 14 324125 7 DECAL ELECT SHOCK HAZARD 30 324200 2 2 DECAL MANUAL RESET 15 324151 DECAL FIELD CDNNECTIDNS 31 16 324198 E DECAL ATTENTIDN INSTALLER 32 324014 DECAL ARROW 17 130000 FRONT LOADING 33 314796 DECAL FREEZING 2 2 SHIPMENT AND TRANSIT The freezer has been assembled operated and in spected at the factory Upon arrival at the final destina tion the freezer must be checked for any damage which may have occurred during final transit With the method of packaging used the equipment should arrive in excellent condition THE CARRIER IS RESPONSIBLE FOR ALL DAMAGE IN TRANSIT WHETHER VISIBLE OR CONCEALED Do not pay the freight bill until the freezer has been checked for dam age Have the carrier note any visible damage on the freight bill If concealed damage and or shortage is found later advise the carrier within ten days and request in spection The customer must place claim for damage and or shortages in shipment with the carrier Stoelting Inc cannot make any claims against the carrier 2 3 FREEZER INSTALLATION AN INSTALLATION MUST BE PERFORMED BY A QUALIFIED ELE
28. Hose Holder Figure 10 Hose Holder 7 SECTION 3 INITIAL SET UP AND OPERATION 3 1 SAFETY PRECAUTIONS SAFE OPERATION IS NO ACCIDENT observe these rules A B C Know the freezer Read and understand the operat ing instructions Notice all warning labels on the freezer Wear proper clothing Avoid loose fitting garments and remove watches rings or jewelry which could cause a serious accident Maintain a clean work area Avoid accidents by cleaning the area and keeping it clean Stay alert at all times Know which switch push button or control you are about to use and what effect it is going to have Disconnect electrical power for maintenance Never attempt to repair or perform maintenance on the freezer until the main electrical power has been disconnected Do not operate under unsafe operating condi tions Never operate this freezer if unusual or exces sive noise or vibration occurs 3 2 OPERATING CONTROLS AND INDICATORS Before operating the freezer it is required that the opera tor know the function of each operating control Refer to Fig 11 for the location of the operating controls on the freezer Standby Clean Serve Dispense Rate Adjusters Cab Indicator Light Pump Switch Figure 11 Operating Controls N WARNING THE CLEAN OFF SERVE SWITCH MUST BE PLACED IN THE OFF POSITION WHEN DISAS SEMBLING FOR CLEANING OR SERVICING THE FREEZER MUST BE DISCONNECTED FROM ELECTRIC
29. LIAS 9 8 G CdwWNd 319901 HILIMS G8 v 0184444 1424 4 3105901 HOLIAS d 4 445 3105901 HOLIMS d 6ESBIL d NH 34 07413 319901 HOLIMS d 5G8 141842840 AL Nd 1301 Wali O GT 14 c3 H Om TEM 5 2 9 qe T 3 a a 9 woe eo eo ez e 2 Q0 EIN p e 9 2 Ors op 40 ASSV 3IDAIVHISIA 100 3015 NI ams IN zu 2 s N ESE Art eS V NI E APP ASSY 3NI 1 5532 INIT NOLLINS THON ASSV AKI ADD ava inn 3015 1437 ASSY 239 9 2510 170 912434 24 22 NI auVA 170 2310
30. MACH 8 32 X 5 8 RD PH 37 766941 0 2 ExWASHER SHAKEPRODF 88 38 538297 0 4 NUT HEX FULL 10 24 ZP 13 PHASE ONLY ONLY ONE SIDE SHOWN ROTATE BRACKET 180 FOR OTHER SIDE 39 Q 07 25 Eo 1H9I 1 cv0 61 8 330 g 2 HILIMS 1 G688 L Ave JA3 210181 ALNDI 6 1962 9 1 JVS A000 LIWII HO
31. N ITEM STOELTING PN QTY1 QTY2 DESCRIPTIDN 1 739527 TIMER INTERVAL 24 VAC e 647529 7 F SCREW MACH 8 32 X 1 2 RD HD PH 3 4 732010 3 3 TERMINAL BLOCK 5 223007 4 4 BUSHING SNAP 5 810 3 4 MTG 6 591001 4 4 POTENTIOMETER 7 324565 DECAL TEMPERATURE ADJUSTMENT 8 3177252 2 2 BRACKET TEMP CONTROL 9 1172733 2 2 CONTROL TEMP W EXTERNAL SWITCH 10 647658 11 9 SCREW MACH 10 24 X 3 8 RD HD 11 766948 20 WASHER SHAKEPROOF 10 ZINC 12 295109 5 5 CONTACTOR MAG 3 PHLE 24V 13 524087 8 8 MOUNT DUAL LOCK CIRCUIT SPACER 14 618142 2 0 RELAY MOTOR START 15 2177218 TRANSFORMER ASSY 16 223015 1 1 BUSHING SNAP 1 1 8 MTG HOLE 17 231057 0 CAPACITOR RUN 35 MFD 370VAC 18 231058 0 CAPACITOR START 145 174 MFD 19 714006 1 50 50 FT 1 X 100 ROLL RUBBER 20 2156689 4 0 CAPACITOR BRACKET 2 0 21 4177237 ELECTRICAL PANEL 714003 1 67 67 FT STRIP 3 8 WIDE CORK RUBBER 23 647393 0 SCREW MACH 6 32 X 3 8 RD HD PH 24 295011 1 1 CONTACTOR MAGNETIC 2 POLE 25 672680 1 1 SENSOR CURRENT 24VAC AC ONLY 26 324728 DECALS CONTACTOR IDENT 27 647641 12 12 SCREW MACH 10 24 X 1 4 RD HD 34 618231 0 OVERLOAD RELAY 3 7 19 35 2177911 0 2 BRACKET OVERLOAD RELAY 36 647536 0 EXSCREW
32. PLACE ITEM 20 ON BACK PANEL amp INSIDE OF FREEZER IN BETWEEN JUNCTION BOXES SECURE ITEM 4 WITH ITEM 5 TO CENTER SPIGOT HANDLE NOTE FOR 4177327 05 USE QTY 1 OMIT 6 DECAL AND USE 34 DECAL FOR 4177327 06 USE QTY 2 OMIT ITEM 26 DECAL AND USE ITEM34 DECAL Stoelting LLC Commercial Products 502 Hwy 67 Kiel WI 53042 MODEL ID PLATE PLACE ITEM 17 gt INSIDE HEADER PANEL amp PLACE WIRING DIAGRAMS INSIDE OF BAGS ITEM 22 IS TO BE PLACED DN THE HUTSIDE fg MADE IN USA DECAL PERGE ses OF ITEM MODEL 1 D PLATE 7 e rasa Loza BOTH SIDES TN 4 2 bb a 0 I 555 BOTH SIDES D 6 Ir SEE NOTE 3 EL I MODEL LD PLATE lt X E X 4 00 E y N E k LI U U U CT TIEM 5 PN prvi gnva DESCRIPTION 6 3 32434 27 DECAL HAZARDOUS MOVING PARTS 4 SECURE ITEM 24 WITH ITEM 5 TO INSIDE OF JUNCTION BOX CIBUPIGTALS JON HARNESSES AIR COOLED ONLY CALLED OUT ON BOM AS LOOSE ITEMS
33. STOELTING 1 Polar Ware Company Model U431 serial 0 thru 17977 OWNER S MANUAL Manual No 513568 Dec 2002 Rev 5 Need Parts or Service Our Technicians are factory trained and are certified in the Stoelting Technicare program CALL A Distributor Phone No Model No Serial No Purchase Date Start Up Date STOELTINGe OWNER S MANUAL FOR MODEL U431 CAB MODEL SOFT SERVE PRESSURIZED FREEZER This manual provides basic information about the freezer Instructions and suggestions are given covering its basic operation and care The illustrations and specifications are not binding in detail We reserve the right to make changes at any time without notice to the freezer and its components without incurring any obligation to modify or provide new parts for freezers built prior to date of change DO NOT ATTEMPT to operate the freezer until instructions and safety precautions in this manual are read completely andare thoroughly understood If problems develop or questions arise in connection with installation operation or servicing ofthe freezer contactthe company atthe location listed below STOELTING LLC Tele 920 894 2293 502 Hwy 67 Kiel WI 53042 1600 Fax 920 894 7029 TABLE OF CONTENTS Section Tinnitus 1 1 1 sn ee 1 1 2 MNT NT 2 Section RMB 3 2 1 Safety Precautions u urea 3 2 2 Shipment amp Transit 4 2 3 1
34. Seal Lubrciation C Lubricate the hex drive end of auger with a small amount of white socket lubricant A small container of socket lubricant is shipped with the freezer D Screw the springs onto the studs in plastic flights Spring must be screwed into the flights com pletely to provide proper tension Figure 24 Figure 25 Front Door Assembly 1 Assemble the air bleed valve O ring onto the air bleed valves Position the ring in groove close to the wide part Apply a thin film of sanitary lubricant the O rings J Insert the air bleed valves from the back ofthe front Figure 24 Spring Installation door Install compression springs onto air bleed valves then screw on knobs finger tight E Install first flights to bottom of auger rotate add successive flights from bottom asthe augerispushed Apply athin film of sanitary lubricant to the door seal slowly into the freezer barrel Carefully engage auger O rings and fit into the grooves on the rear of the with drive socket in speed reducer by rotating auger front door slowly and pushing on end of auger L Place the front door assembly onthe mounting studs Apply athin film of sanitary lubricant to the inside and and push front door against the freezer carefully outside of the front auger support bearing then place on the front of the auger Assemble the frontauger Secure front door assembly by placing the knobs on support onto the auger bearing the stu
35. ck up suction side hose side of the black cover Gently push the hose into the black cover until it begins to self feed Allow the hose to feed itself through the pump until the pick up hose adapter pre vents further feeding then turn the pump off 7 Reconnect mix pump hose to T using small clamp Pump is now ready to sanitize 4 6 CAB TEMPERATURE ADJUSTMENT Atemperature control is usedto control cab temperature To change the temperature disconnect electrical power and then follow the steps below A Remove the six screws holding the left side panel and remove panel B Usea small screwdriver to adjust the temperature control Turn counterclockwise for a warmer tem perature and clockwise for a colder temperature It will take about an hour for the cab temperature to change Figure 28 Figure 28 Temperature Control Cab C Install side panel and secure with the six retaining screws 4 7 DRIVE BELT TENSION ADJUSTMENT To check belt tension refer to Figure 29 and follow the steps below WARNING DISCONNECT ELECTRICAL SUPPLY TO FREEZER BEFORE SERVICING A Remove either side and back panels B Press firmly on one belt Figure 29 Figure 29 Belt Adjustment C When the tension is properly adjusted the outside of the depressed belt should be approximately in line with the inside of the other belt D Ifanadjustment is necessary loosen the four motor plate retaining nuts adjust belt tension then re ti
36. cratched shaft Spigot parts are not lubricated Chipped or worn o rings O rings on spigot installed wrong Nicks or scratched on front door where spigot is located Drive belt tension not correct Worn belt s Temperature setting is too low Low overrun System low on refrigerant Mix level in hopper is too low EPR valve set too warm EPR valve set too cold Mix pump problem Check power to freezer Wait 15 20 min for motor to reset Check must be 10 of nameplate voltage Raise overrun see pump manual and or product temperature See Sec 4 2 Install front door securely Check power to freezer Push DRIVE RESET lever Check must be 10 of nameplate voltage Check condenser air cooled See Sec 4 4 or water suppy water cooled Install front door securely Adjust temperature See Section 4 2 Fill with fresh product Place Standby Serve Switch in Serve position Adjust temperature See Sec 4 2 Raise overrun See pump manual Check pump pressure Purge air from barrel Change rotation to clockwise Lubricate seal See Sec 3 14B Check See Sec 3 14B Replace shaft Lubricate See Sec 3 12B Replace o rings Remove spigot and check o rings Replace front door Adjust belt tension See Sec 4 3 Replace belts Adjust temperature See Sec 4 2 Check for air leak
37. ds and alternately tighten opposite corners NOTE until finger tight only Do not overtighten Proper O ringsealcan be observed through the transparent Position the front support on auger so legs do not front door interfere with the pin on the back of the front door assembly Front door must push auger in slightly when it is being tightened to prevent the rear seal from leaking lt Move the spigot handles to the closed position G Assemble O rings onto the spigot dry without lubrication Then apply a thin film of sanitary lubricant to the outside of the O rings and spigot bodies H Install the spigots through the bottom of the front door Figure 25 SECTION 4 MAINTENANCE INSTRUCTIONS 4 1 FREEZER ADJUSTMENT This section is intended to provide maintenance person nel with a general understanding of the freezer adjust ments It is recommended that any adjustments in this section be made by a qualified person 4 2 PRODUCT TEMPERATURE ADJUSTMENT A potentiometer is used to control the product tempera ture To change the temperature of the product follow the steps below A Loosen the two screws under the header display sign then pull sign out and down B Use a screw driver to make desired adjustment label near the potentiometer will give complete in structions Figure 26 Figure 26 Potentiometer 4 3 OVERRUN ADJUSTMENT The product when served is a combination of air and mix Overrunisa
38. e Right Side Left Side Right Side Left Side Right Side Total Running Amps 17 6 17 2 11 6 11 2 20 8 17 2 14 8 11 2 Minimum Circuit Ampacity 31 31 21 21 36 31 26 21 HACR Max Circuit Breaker 45 45 30 30 50 45 35 30 Maximum Fuse Size 45 45 30 30 50 45 35 30 COOLING Water or air cooled req s 3 7 5cm all around clearance and 10 25cm top clearance Water cooled req s 1 2 12 5mm NPT water and a fittings SECTION 2 INSTALLATION INSTRUCTIONS 2 1 SAFETY PRECAUTIONS periodically to be sure they have not been painted over rubbed off fallen off and can be recognized as warning AN A naw Do not attemptto operate the freezer untilthe safety pre cautions and operating instructions in the manual are read completely and are thoroughly understood Ifyou are in need of replacement labels indicate the part number type of label location of label and quantity re quired along with your name and address and mail to Take notice of all warning labels on the freezer Fig 3 The labels have been put there to help you maintain a safe working environment The labels have been designed to withstand washing and cleaning All labels must remain legible for the life ofthe freezer Labels should be checked PLACE ITEM 9 8 13 IN SIMILAR LOCATIONS ON OPPOSITE SIDE OF FREEZER PLACE ITEM 27 ON INSIDE OF FREEZER ON MOTOR SUPPORT BRACKET PLACE ITEM 122 ON INSIDE OF FREEZER ON REDUCER SUPPORT BRACKET BETWEEN BELTS
39. edure A Turn the mix pump switch to the OFF position Disconnect both power sources circuit breakers B Remove the lower back panel from freezer C On air compressor side of pump locate the long slender piston rocking arm The rocking arm down ward travel is limited by a stationery cam On the face of the cam there is an overrun setting indicator plate numbered 3 thru 8 and an adjustment knob Figure 27 Figure 27 Overrun Adjustment D The overrun setting is indicated by a pointed pin E To adjust overrun loosen the allenhead screw located within the center of the adjustment knob with the 5 32 4mm allen wrench provided Rotate the adjustment knob counterclockwise to a higher number for higher overrun or clockwise to a lower number for lower overrun Each number multiplied by 10 represents the overrun percentage ie 4 4096 overrun F Tighten the allen screw then place the wrench back in its clip Replace the lower back panel and secure with the four screws Turn the mix pump power switch to the ON position 4 4 MIX PUMP HOSE REPOSITION every one or two weeks NOTE Mix pump hose must be repositioned every 1 2 weeks Failure to comply will result in reduced mix pump liquid capacity dispense stoppage popping and possible mix pump hose leakage 1 Run cleaning solution through pump 2 Turn pump off and relieve any pressure by opening the spigot 3 Grasp the pick up hose end of the mix pum
40. ghten the four nuts NOTE Belt life will be increased if new drive belts are tight ened after two or three weeks of operation 4 8 CONDENSER CLEANING AIR COOLED FREEZERS The condenser requires periodic cleaning To clean the condenser refer to the following steps NOTE Some freezers have a condenser filter to clean re move and wash in warm soapy water Rinse in clean water and shake dry taking care not to damage filter in any way A Visually inspect the condenser for dirt B Ifthe condenser is dirty place a wet towel over the condenser C Using compressed air or CO2 tank blow out the dirt from the back of the condenser Most of the dirt will cling to the wet towel NR THIS PROCEDURE EMITS A LOUD NOISE D alternative method is to clean with a condenser brush and vacuum NOTE If the condenser is not kept clean loss of refrigera tion efficiency will result 4 9 PREVENTATIVE MAINTENANCE Itis recommended that a preventative maintenance sched ule be followed to keep the freezer clean and operating properly The following steps are suggested as a preven tative maintenance guide ZN warNinc NEVER ATTEMPT TO REPAIR OR PERFORM ANY MAINTENANCE ON FREEZER UNTIL ALL MAIN ELECTRICAL POWER HAS BEEN DIS CONNECTED The United States Department of Agriculture and the Food and Drug Administration require that lubricants used in food zones be certified for this use Use lubricants only in accordance with
41. h regulations To disassemble the freezer refer to the following steps Wear Line Figure 16 Auger Flight Wear amp Front Auger Support Bushing Wear A Disassembly Of Front Door Figure 18 Auger Flight Removal 1 Remove the front door by turning off the circular NOTE knobs and then pulling the front door off the studs Be careful not to scratch inside of freezer barrel when CAUTION removing flights or auger HAZARDOUS ROTATING BLADES DO NOT OP ERATE UNIT WITH FRONT DOOR OR SPIGOT REMOVED 2 Remove the air bleed valve by unscrewing the knob 4 Keep the rear of the auger tipped up once it is clear of the freezer barrel 5 Wipe spline lubricant off hex end of auger witha while holding the valve stem from behind Remove paper owe the compression spring and push air bleed valve 6 Remove the rear seal Figure 19 through the rear of the front door 3 Remove the spigot through the bottom of the front door Figure 17 Figure 19 Rear Seal Removal 3 10 ROUTINE CLEANING A good grade of stainless steel has been used on the freezerto ease clean up To remove spilled or dried mix simply wash the exterior in warm soapy water and wipe dry Do notuse highly abrasive materials as they will mar Figure 17 Front Door Disassembly the finish A Toclean the freezer parts disassemble all parts Refer to section 3 9 for the disassembly of freezer 1 Remove the front auger support by pulling it pa
42. in at the tee and then travel to the freezer Hose Holder Figure 15 Mix Pumps Theover run adjustmentis preset atthe factory If an adjustment becomes necessary refer to Section 4 3 7 REMOVING MIX FROM THE FREEZER This cleaning procedure must be followed each time the freezer is to be shut off for an extended period of time such as overnight or on non business days A Place the mix pump in the OFF position B Draw desired frozen mix from freezer Close spigot C Place CLEAN OFF SERVE switch in CLEAN posi tion Allow mix to agitate in freezer barrel until the mix has become liquid D Place the mix pump in the SERVE position Open spigot and pump liquid mix through the freezer When empty place CLEAN OFF SERVE switch and the mix pump switches in the OFF position Figure 12 E Close the spigot and place the mix pump suction tube into the pail of cold tap water F Open air bleed valve on the front door by pushing valve in and holding G Place the mix pump switch in the ON position H Let the cold water fill freezer to air bleed valve then close the valve by pulling out to lock in place Place the CLEAN OFF SERVE switch in the CLEAN position J Allow water to agitate until the inside surface of front door has rinsed clean K Open spigot to expel water When the pail is empty place the mix pump switch and CLEAN OFF SERVE switch in the OFF position Allow freezer barrel to drain completely 3 8 CLE
43. ing aa 20 Section a 25 5 1 Howto Order Replacement Parts 25 5 2 Parts Lists and Reference Drawings 25 ILLUSTRATIONS Figure 1 Model U431 Freezer seen 1 Figure 2 Specifications srl cc 1 Figure3 Decal ir 3 Figure 4 Water Electrical Connections 4 5 edi aa t 4 Figure 6 MixHose nstallation anane es 5 Figure7 Mix Pump 6 FIg re ga UA cane iii 7 Figure 9 Mix Inlet Tube amp Probe Assy 7 Figure 10 Hose Holder a 7 Figure 11 Operating aiite acetate iet 9 Figure 12 Air Bleed Valves uns 10 Figure 13 Draining sanieren 1 10 Figure 14 Mix CODIGIFIOI anne a 11 Figure 15 Mix Pumps nana due 12 Figure 16 Auger Flight Wear 8 Front Auger Support Bushing Wear 13 Figure 17 Front Door Disassembly unsern en 13 Figure 18 13 Figure 19 Rear 5681 Removal cinco 13 Figure 20 Cleaning Feed Tube ee 14 Figure 21 Cleaning Air Tube x aiit ku aar 14 Figure 22 Removable Parts sonic 14 Figure 23 Rear Seal Lubrication
44. is a two position toggle switch When the switch is placed in the OFF position the pump will not run When the switch is placed in the ON position the pump will run until the preset pressure is reached then cycle ON and OFF as product is drawn to maintain that pressure Standby Serve Switch The standby serve switch is a two position toggle switch When the switch is placed in the Standby position the freezer will cycle to maintain a temperature below 41 F When the switch is in the Serve position the freezer will cycle to maintain a servable product Freezing Switch The freezing switch is a two position toggle switch When the switch is placed in the ON position the freezer will be forced to run 30 seconds after the temperature control is satisfied Dispense Rate Adjusters The dispense rate adjuster limits the opening of the spigot To adjust product dispense rate turn the adjusting knob clockwise for slower flow and counter clockwise for faster flow High Head Pressure Cut Out If the head pressure exceeds 445 PSIG 28 bar air cooled and water cooled the high head pressure cutout will trip The reset button can be accessed from the side of the freezer J Low Mix Light The low mix light will illuminate when the liquid level in the mix container drops below two gallons K FrontDoor Safety Switch The front door safety switch prevents the auger from turning when the front door is removed The switch is open when the do
45. l bottom Warm Cold T Stat Night Serve Temp Control Bracket Use copper cond only inside both J boxes Wired According to on elec schematic envelope Elec Schematic Envelope Water Inlet Back panel above inlet coupling Header Panel Decal Stoelting Logo Header Panel Decal Stoelting Swirl Header Panel Decal A amp W Logo 29 42 us EN LTE STUELTING PN QTY DESCRIPTION 3177240 1 TRIM STRIP F 2 3177250 1 TRIM STRIP RIGHT 3 3177236 2 TRIM STRIP REA 4 417 238 E BACK PANE I 4177239 FRONT
46. ly and allow excess air to belch out NOTE ALSO SEE 2 amp 4 ABOVE 8 MIX LEAKAGE FROM PUMP CAUTION To prevent mix pump damage from dried mix deposits immediately disassemble and clean pump Mix pump hose service life is exceeded Remove mix pump hose Disconnect pump from power source Remove mix pump cover clamp THOROUGHLY rinse three squeeze rollers using a spray bottle filled with hot water Thoroughly clean all mix from pump See Sec 4 2 for hose replacement Lubricate squeeze roller bearings see Item 10 below 9 PUMP HAS POOR CAPACITY Lift and run limits are exceeded Pump is limited to 10 lift 20 run NOTE Also see2 4 6 amp 7 10 PUMP IS NOISY SQUEAKING NOTE THE ACTION OF THE AIR COMPRESSOR ROCKING ARM CREATES A REPETITIVE CLICKING SOUND DURING OPERATION THIS IS NORMAL NOTE THE PERISTALTIC MIX PUMP HAS THREE SQUEEZE ROLLERS WHICH USE SELF LUBRICATING BEARINGS IF SQUEAKING EXISTS WITH THE MIX PUMP HOSE IN PLACE AND STOPS WITH THE HOSE REMOVED THE SQUEEZE ROLLER BEARINGS CAN BE LUBRICATED USING A SILICONE BASED SPRAY REMOVE THE MIX PUMP HOSE DISCONNECT PUMP FROM ELECTRICAL POWER REMOVE FOUR COVER CLAMP THUMBSCREWS REMOVE ENTIRE COVER CLAMP AS ONE UNIT SPRAY SILICONE BASED LUBRICANT ON EACH END OF EACH SQUEEZE ROLLER SPIN ROLLERS TO WORK LUBRICANT INTO BEARINGS REPEAT AS NEEDED CAUTION DO NOT USE CLEANING DISSOLVING TYPE LUBRICANTS LIKE WD 40 THESE LUBRICANTS ARE NOT BEARING FRIENDLY AND WILL A
47. n it is not necessary to be overly concerned about capacity But if there is an order for six products at one time each using 9 ounces of product it should be considered as 54 ounces of product Approxi mately two minutes must be allowed for this drawing Af ter a while most operators will sense or feel when the freezer is beginning to fall behind and will slow up on the rate of draw so as not to exceed capacity 3 5 MIX INFORMATION Mix can vary considerably from one manufacturer to another Differences in the amountof butter fat content and quantity and quality of other ingredients have a direct bearing on the finished frozen product A change in freezer performance that cannot be explained by a technical problem may be related to the mix Proper product serving temperature varies from one manufacturer s mix to another Mixes should provide a satisfactory product in the 17 to 20 F range When checking the temperature stir the thermometer in the frozen product to read the true temperature Mix does not improve with age Old mix or mix that has been stored at too high a temperature can result in a finished product that is less than satisfactory from the appearance and taste standpoint To retard bacteria growth in dairy based mixes the best storage temperature range is between to 40 F 3 6 OPERATION OF MIX PUMP The PUMP switch is located on the front of the freezer When the pump switch is placed in the ON position
48. or is removed and closed when the door is properly installed 3 3 SANITIZING Sanitizing must be done after the freezer is clean and just before the freezer is filled with mix Sanitizing the night before is not effective However you should always clean the freezer and parts after using it A WARNING THE UNITED STATES DEPARTMENT OF AGRI CULTURE AND THE FOOD AND DRUG ADMINIS TRATION REQUIRE THAT ALL CLEANING AND SANITIZING SOLUTIONS USED WITH FOOD PROCESSING EQUIPMENT BE CERTIFIED FOR THIS USE When sanitizing the freezer referto local sanitary regula tions for applicable codes and recommended sanitizing products and procedures The frequency of sanitizing must comply with local health regulations Mix sanitizer ac cording to manufacturer s instructions to provide a 100 parts per million strength solution Mix sanitizer in quan tities of no less than 2 gallons of 120 F water Allow sani tizer to contact the surfaces to be sanitized for 5 min utes Any sanitizer must be used only in accordance with the manufacturer s instructions Figure 12 Air Bleed Valves PAN CAUTION PROLONGED CONTACT OF SANITIZER WITH FREEZER MAY CAUSE CORROSION OF STAIN LESS STEEL PARTS In general sanitizing may be conducted as follows A Clean and lubricate parts B Prepare 3 gallons of sanitizing solution following manufacturer s instructions and pour into storage container C Place the mix pump switch in the ON position and o
49. out all water first through water inlet then through water outlet lines with air or carbon dioxide Also drain water supply line to the freezer E Place the mix pump ON OFF switch and the CLEAN OFF SERVE switch in the OFF position F Disconnect from the source of electrical supply in the building 4 11 TROUBLESHOOTING The Troubleshooting Table lists the common problems that can occur to the freezer 20 FREEZER PROBLEM POSSIBLE CAUSE REMEDY Drive motor auger kicks out or does not run Compressor does not operate Product too soft Freeze up Product will not dispense easily Rear auger seal leaks Spigot leaks Drive belts slipping or squealing Hopper mix temperature too warm Hopper mix temperature too cold sides frozen Mix pump does not run properly Power to freezer is off Drive motor overloaded Low line voltage Product too hard Front door not installed securely Power to freezer if off Drive motor overloaded Low line voltage Compressor internal overload is cut out 5 Front door not installed securely Temperature setting is too high Product break down Standby Serve Switch in Standby position Temperature setting is too low Low overrun setting Low pump pressure Large air pocket in barrel Auger turning counter clockwise Rear auger seal not lubricated Seal missing or installed wrong Worn or s
50. p hose with one hand and turn the pump on Pull down on the pick up end until 12 10 14 30 1 2 to 35 1 2cm of tubing has reverse fed through the pump then turn the pump off 4 Loosen small clamp at the pick up hose adapter and Viewed from Back disconnect mix pump hose 5 Cut 7 1 2 19 cm off the end of the mix pump hose 6 Reconnect mix pump hose to adapter 7 Continue normal operation Mix hose will automatically reposition itself with adapter near black cover NOTE Each hose is long enough for 3 repositions before replacement is required Record each event on Hose Service Record decal 4 5 MIX PUMP HOSE REPLACEMENT NOTE Mix pump hose must be replaced when tubing can not be further repositioned every four to eight weeks Failure to comply will result in hose failure and possible pump damage 1 Run cleaning solution through pump 2 Turn pump off and relieve any pressure by opening the spigot A WARNING THE MIX PUMP SWITCH MUST BE IN THE OFF POSITION WHEN SERVICING OR CLEANING PUMP A num NEVER DISCONNECT HOSES FROM FREEZER OR PUMP WITHOUT FIRST OPENING SPIGOT TO RELIEVE PRESSURE 3 Disconnect mix pump hose at each end 4 Grasp the discharge hose end with one hand and turn the pump on Pull down on the hose until all of the remaining hose is removed from the pump 5 Connect new mix pump hose to pick up hose adapter using small clamp 6 Insert free end of hose into the pi
51. pen air bleed valve on the front door by pushing valve in and holding Figure 12 D Letsanitizing solution fill the freezer barrel to air bleed valve then close the valve by pulling out to lock in place E Place the CLEAN OFF SERVE switch in the CLEAN position F Check for leaks when the freezer barrel is first pressurized with sanitizing solution 1 Check for leaks at the plastic front door the 0 rings not be sealed 2 Check the drain tray located at the right or left side of the freezer for leaks 3 Check inside cab unit for leaks at hose connec tions and manifolds G Using asanitized soft bristle brush or equivalent dipped in sanitizing solution clean mix container H After five minutes open spigot to expel sanitizing solution Drain all solution from freezer using all three spigots Figure 13 3 Figure 13 Draining Sanitizer 1 Close the spigot and place the mix pump switch and the CLEAN OFF SERVE switch in the OFF position The freezer is now sanitized and ready for adding mix 3 4 INITIAL FREEZE DOWN AND OPERATION This section covers the recommended operating proce dures to be followed for the safe operation of the freezer A Sanitize just prior to use according to instructions B Prepare the desired amount of mix and then fill stor age container with approximately 3 gallons or more of mix Place a container s of mix in the cooler If drawing from a storage container place the draw
52. rts straight out of the freezer barrel B Disassembly Of Auger B Place all parts in warm mild detergent water and 2 Remove the plastic bearing from the front auger washthoroughly Rinse all parts with clean hot water support NOTE 3 Remove the auger by pulling slowly and rotating Take care not to damage parts by dropping or rough out of the freezer barrel As the auger is with handling drawn remove each plastic flight and spring from the auger Figure 18 C Wash feed tube and freezer barrel with warm deter gent water and brushes provided Rinse with clean hot water Figure 20 Figure 20 Cleaning Feed Tube D Cleantherearseal surface from inside of the freezer barrel E Removethe rear drip tray by pulling from side panel Clean and replace drip tray F Assemble freezer parts Refer to section 3 13 for assembly of freezer parts NOTE Any cleaning procedure must always be followed by sanitizing before filling freezer with mix Refer to section 3 3 3 11 MIX PUMP CLEANING The mix pump is approved for CIP clean in place and is thoroughly cleaned as cleaning solutions are pumped thru the freezer We recommend completely disassembling the pump and connecting tubing every 14 days for inspection of parts to confirm the CIP has been properly performed If any residue is detected clean or replace those parts Clean parts in warm soapy water using brushes provided See Figures 21 and 22 Figure 21
53. tion the Checklist Warranty Registration Card for the affected equipment b gives Stoelting prompt written notice of any claimed breach of warranty within the applicable warranty period and c delivers the affected equipment to Stoelting or its designated service location in its original packaging crating also within that period Buyer shall bear the cost and risk of shipping to and from Stoelting s plant or designated service location 4 Exclusions and Limitations This warranty does not extend to parts sometimes called wear parts which are generally expected to deteriorate and to require replacement as equipment is used including as examples but not intended to be limited to o rings auger seals auger support bushings and drive belts All such parts are sold ASIS Further Stoelting shall not be responsible to provide any remedy under this warranty with respect to any component that fails by reason of negligence abnormal use misuse or abuse use with parts or equipment not manufactured or supplied by Stoelting or damage in transit THE REMEDIES SET FORTH IN THIS WARRANTY SHALLBE THE SOLE LIABILITY STOELTING AND THE EXCLUSIVE REMEDY OF BUYER WITH RESPECT TO EQUIPMENT SUPPLIED BY STOELTING AND IN NO EVENT SHALLSTOELTING BE LIABLE FORANY INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER FOR BREACH OF WARRANTY OR OTHER CON TRACTBREACH NEGLIGENCE OR OTHER TORT OR ONANY STRICT LIABILITY THEORY
54. tions F Place the CLEAN OFF SERVE switches in the OFF position before continuing Figure 11 2 4 INSTALLING PERMANENT WIRING Permanent wiring is required by local codes the follow ing procedure must be performed A Refertothe nameplate atthe rear of the freezer for specific electricalrequirements Make sure the power source in the building matches the freezer name plate requirements Bring the wires into the junction boxes through the access holes in the bottom rear of the freezer Figure 4 NOTE Three phase freezers in areas of unbalanced elec trical loads require special attention when connect ing input electrical power The unbalanced leg of power called wild or high must be connected to L2 in the junction box B Remove the lower back panel and the two junction box covers located at the bottom of the freezer C Install permanent wiring according to local code D Check the auger shaft rotation by placing the MAIN DRIVE switch in the CLEAN position Auger shaft rotation is clockwise as viewed through the clear plastic front door If the rotation is not clockwise turn main electrical power OFF Then reverse L1 and L3 electrical power lines to the junction box three phase only Re check auger shaft rotation Figure 5 Figure 5 Auger Rotation 2 5 MIX PUMP A Mix Pump Hose Installation Follow the steps below to installthe mix pump hose 1 Turn pump on 2 Feedone end of mix pump hose into the entering
55. tube through the cover to the bottom of the container If drawing from a bag in a box remove the cap push out all of the air and insert the adaptor Figure 14 Mix Containers C Place the mix pump switch located on the front of the freezer in the ON position Immediately open the spigot and let approximately 8 ounces of liquid mix with sanitizing solution drain out of the spigot D Close the spigot and open the air bleed valve on the front door by pushing the valve in and holding Allow the barrel to fill until the mix level is 1 2 inch below air bleed valve then release valve and pull closed to lock in place E Startthe compressor and drive by placing the CLEAN OFF SERVE switch in the SERVE position The product will be ready to serve after the compres sor and drive have cycled off or in approximately 12 minutes G Therefrigeration is automatically actuated when the spigot is opened For normal dispensing open the spigot no more then 902 This is when the handle knob is pointed directly away from the front door This position provides excellent control over the prod uct and aids in making desired shaped portions Close spigot completely after dispensing It is possible to overdraw if rate of draw is exceeded for extended periods If the freezer is overdrawn the result will be a soft product and air pops To draw a quart prop erly it is necessary to use a little more than one minute During normal operatio
56. x 10cm x 30 5cm 208146 Brush 25 x 4 x14 6cm x 10cm x 35 5cm 208380 Brush 1 x3 5 x18 2 5cm x 45 5cm 208465 Drip Tray 744273 Drip Tray Grid 417006 Q MR an 10 5 59 4 ITEM 1 WOON DU UM DANA AWM oO FO ro ro STOELTING PN Q 756067 15 756204 40 264054 375867 264055 756088 20 1172864 696130 694247 762256 624607 756088 02 1151965 1177816 376016 538018 111815 2177197 624676 756088 30 2177272 264235 508135 5 Y Sm fo TO FM TO FMM rn TO o 38296 62258 71952 Figure 7 Pump 28 O DESCRIPTION PLASTIC 1 4IDX7 16HD X 15 0 LG NORPRENE FOOD 25 ID X 400 LG E E gt ww E CLAMP LOOP JAW 7 16 FITTING UNION 1 4 X1 2 BARBED CLAMP LOOP JAW TYPE 11 16 TUBING PLASTIC 1 2IDX3 4HD X 20 0 LG VALVE BODY LOCK CLIP FOR VALVE SPRING COMP 13 16 3 8 3 4 VALVE OUTLET CHECK MOLDED RING D 11 16X7 8X3 32 SPECIAL TUBING PLASTIC 1 21DX3 40D X 20 LG VALVE BODY INNER STAINLESS 4 WAY TEE UT 10 24 ACORN 18 8 STN STL OCKING PLATE WASHER TTING PRESSURE SWITCH D 1 1 8 1 5 16
Download Pdf Manuals
Related Search