SERVICE MANUAL - Cloudfront.net
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1. 2 3 3 Pe gt S 5 gt TMER IM FO TON 1 2988 5 5006 1001 Rev A SCHEMATIC 6 PAN 230 1 PHASE CE OPTIONS SEL GR 1 FIFI TER WHT GAST WO AJTO FILL 142 Wi AUTC FILL 1 amp 1 2 amp 3 2 3 5 g E gt E n a 3 Q 1 ei i ma aca zum ne osm AP FT S VN Sie B x 4 iN M T BS u IHEHMAL LINII POWER SW n L BRAS D 7 7 WO lt 9 Low WATER gt E gt A TIVER IM 17 2909 6 SINGLE CL 230V 27 MP5006 1001 Rev A SCHEMATIC 6 PAN 380V 415V PHASE OPTIONS e OVER RUN RESSUR ss BLU WHI Hole 1 tem E WI FILTER E WHT GAST su RET me Fs E HS 5 Y cR cm oR THERWALUIMT r wtn es j SONNECTION CHART WO AUTO FILL Wf ITOFILL 1 amp 4 263 MASTER W gy at if a 5 14 TN 5 7 CIN WATER c er 2 4 2 82. 111 24026 1 PHASE 230V DKGRY INS HOLY POSTION MP5006 1001 Rev A SCHEMATIC PAN 380V 415V 3 PHASE CE OPTIGNS PRESSL EF CHART WO AUTO FILL 122 Wi AUTO IL_ 184 283 SIND 3 ETI 20 8e T37 135 190 WHT 12457 VP EHN I nomas F 5 SW5 o LI EHR D WHT HASI VASO e id ook I HEHM E e P HIE E N T d a MHI TIMENIN Fo 1 2402 7 POSIN PHASE 380 415V GAST HEATER 35 MP5006 1001 Rev Part Buzzers ATOE 2807 1 PARTS Description Prices are subject to change without notice Buzzer Timer Low Water Door Quick Release Door Current Production AT1A 2912 1 AT1A 2912 3 AT1A 2426 5 AT1A 2426 6 AT1A 2427 1 AT1A 2426 1 AT1A 2426 3 AT1A 2644 2 RAT1K 1830 AT1H 2046 1 AT1M 3045 1 AT1M 3046 1 AT1M 3046 2 AT1M 3466 1 AT1M 3466 2 AT1H 2058 3 QR Door Replacement Right Hinged Floating Inner door QR Door Replacement Left Hand Floating Inner door Floating Inner Door Right hand Floating Inner door Left Hand Valve Bracket Assy w cups amp rod
3. SERVICE MANUAL SERIAL NUMBERS 25384 AND UP Q BEST STEAN ACCUTEMP PRODUCTS INC 8415 NORTH CLINTON PARK FORT WAYNE IN 46825 800 480 0415 www accutemp net TABLE OF CONTENTS CONNECTIONLESS MODELS Introduction Sequence of Operation Trouble Shooting Guide Removal and Installation 6 Pan Models Removal from Stand Removal of Legs Gast Vacuum Pump Thermostat Temperature Probe Timer Vacuum and Temperature Gauges Contactor Vacuum Hoses and Tees Solid State Relays Lamps Fuses Water Sensor Control Board Water Sensors Control Relays Fast Cook Thermostat Toggle Switch On Off Switches Cord and Plug Assy Drain Valve Gutters Pressure Switch Dual Pressure Switch Firebar Heater Replacement Cast Heater Door Removal Inner Door Removal Floating Inner Door Removal Gasket Replacement Inner Door Valve Cup Replacement Door Latch Replacement Removal and Installation 3 Pan Model Light Board 17 5006 1001 Rev A AUTOFILL MODELS Introduction amp Sequence of Events 3 amp 6 Pan Models Trouble Shooting Guide Removal and Installation Water Fill Sensor Control Board Water Fill Valve Overfill Sensor Switch Schematics 6 Pan Models Schematics 3 Pan Models Parts 18 19 22 28 29 35 36 39 5006 1001 Rev A INTRODUCTION CONNECTIONLESS 3 amp 6 PAN MODELS The AccuTemp Steam N Hold steamer takes time proven method of
4. C Fa Fs 1 ot E A TF um WAU C n gt THERMAL LMT Dni Ke B 5 5 ICONNESTION CHART WO AUTO FILL 142 WC AU TC ILL 1 amp 1 2 amp 3 lt YEL ah oe LOW WATER 8 a E 2 4 gt T 5 m WHT otk GRY 25 ut J a 3 T m Q MELB x E mum D 1 THERM 2374 TUO REESE eee 5 3 9 o wer is TYPE 7IMERIN 3 lt OLE cnm 3403 3 3 PHASE 380 415 31 MP5006 1001 Rev SCHEMATIC 3 PAN 440V 480V PHASE DPTICNG WO AU 04 LL 1 amp 2 Wf AUTO FILL 184 iMd ET YATIOSLNOD 138440 v2 2 yh CONNECTION CHART THFRM lt i Nor WHT JIYE p 2403 4 rco 3 PHASE 44C 48CV GAST IN HEATER 32 FNK TIMER IN HOLD POSITION Wes D amp T Gamm Det 5006 1001 Rev A SCHEMATIC PAN 208V PHASE 17kW OPTIONS HEAT F N WHT cu VP Jens pp 283 X em be Re 7 HA 275v 5 40 d
5. 4 636 4 666 4 696 4 726 4 757 4 787 4 817 4 847 4 877 4 907 200 4 907 4 937 4 967 4 997 5 028 5 058 5 088 5 118 5 148 5 178 5 209 210 5 209 5 239 5 269 5 299 5 329 5 36 5 39 5 42 5 45 5 48 5 511 5006 1001 Rev A REMOVAL AND INSTALLATION 6 PAN MODEL REMOVAL FROM STAND Using a 7 16 wrench remove the 4 1 20 x 1 bolts and lock washers located on the mounting brackets going into the bottom of the unit When reinstalling make sure the 1 brackets that hold the drip pan are facing inward REMOVAL OF LEGS Units with legs use the same L brackets used on the stand but are held on by 8 77 20 X 2 bolts and lock washers Use a 7 16 wrench to remove these to access the bottom panel GAST VACUUM PUMP Unplug the unit Remove the sheet metal screws on the left side panel of the unit Disconnect the wires to the relay and mark the locations Remove the hoses from the pump head Remove the two 3 8 nuts holding the muffler on and pull out of the way Remove the bolts on the pump bracket and pull the whole assembly out Remove the 4 Phillips screws washers and spacers on the bracket Remove the brass fittings on the head of the pump Reassemble in reverse order GOON SUEDE 8 MP5006 1001 Rev A THERMOSTAT Unplug the unit Remove the sheet metal screws on the left side panel of the unit Remove the knob and the seal nut with a gt nut driver on th
6. Inner Door Assy Right 6 pan Inner Door Assy Left 6 pan Quick Release Door handle QRD Valve Plate Seal Kit QRD Spring Compression QRD Valve Cover QRD Latch Backer Plate RH QRD Latch Backer Plate LH Bracket Right steamer door Bracket Left steamer door Door Hinge Pair Door Standard Door AT1H 3609 1 AT1M 2689 1 Door Gasket AT1G 2633 1 Fittings Scre ws ATOF 2061 41060 2061 41140 2061 41160 2691 41011 1046 31030 ATOF 3371 1 ATOP 2849 2 ATOP 2849 3 ATOP 2987 2 ATOP 3430 1 AT1P 222P 8 8 AT1P CMASSY AT1P 2239 Fuses ATOE 3162 1 2731 1 AT1E FU5 ATR FU30 AT1E FB2P Gauges AT1A 3303 1 AT1A THME ATOH 2614 1 AT VG Door Latch Ceramic Magnet Chrome Standard amp Evolution Plate Hinge Backer Gasket Door S6 Six Pan Screw 10 24 x 3 4 slot flat hinge plate Screw 10 24 x 1 3 4 fhms qrd handle Screw Slot Flat 10 24 2 Nyloc Nut Serrated hex 10 24 Screw Phillips Truss 8 32x3 8 Control panel Nut Rotary Shaft Seal for thermostats Street Elbow 1 8 x1 8 Extra Long Street Elbow 1 8 x1 8 Nylon Tee Barbed 1 2 x 1 2 x 1 2 Garden Hose fitting Autofill Adapter 1 2 x1 2 Copper Manifold Assembly External Muffler Ball Valve drain Fuse Slo Blo 1 2 Amp Fuse Slo Blo 3 Amp Fuse 5 Amp Fuse 30A 250V Time Delay Fuse Block Two Position 250V Thermometer Assembly 2 Thermometer Assembly 1 1 2 Vacuum Gauge 2 Va
7. Rev A WATER SENSOR CONTROL BOARD VIO Unplug the unit Remove the sheet metal screws on the left side panel of the unit Disconnect the wires and mark the pin locations Remove the nylon mounting pins Reassemble in reverse order THERMA LIMIT SW WATER SENSORS RON 5 6 7 Unplug the unit Remove the sheet metal screws on the left side panel of the unit Open the door and drain all the water from the chamber Remove the 8 32 hex nut from the back side of the sensor with an 11 32 wrench and remove the sensor lead Use 34 wrench to remove the nut on the sensor Push the sensor thru the hole from the backside Reassemble in reverse order Note Do not exceed 15 inch pounds when tightening the sensor mounting nut CONTROL RELAYS at Unplug the unit Remove the sheet metal screws on the left side panel of the unit Disconnect the wires and mark the pin connections Remove the 6 32 nyloc nuts Reassemble in reverse order 12 MP5006 1001 Rev A FAST COOK THERMOSTAT TOGGLE SWITCH vic an ct Unplug the unit Remove the sheet metal screws on the left side panel of the unit Remove the retaining nut with an open end 1 2 wrench Disconnect the wires Reassemble in reverse order ON OFF SWITCHES 4 1 Unplug the unit 2 3 On the inside of the unit push the tension spring on the locking ring and then pull the Remove the sheet metal screws on the left side panel
8. Thermostat Check resistance between terminals 4 amp 5 AC thermostats should read line voltage and DC thermostats should be between 3 to 34 DC volts Thermocouple type J See above Unit is not coming up to proper temperature Heating elements Check for resistance between the two outside double white wires on the terminal block On 17kW units check to terminals 1 amp 6 2 amp 5 and 3 amp 4 the terminal block See attached chart for resistance readings F 0 1 2 3 4 5 6 7 8 9 10 70 1 076 1 105 1 134 1 162 1 191 1 22 1 249 1 277 1 306 1 335 1 364 80 1 364 1 392 1 421 1 45 1 479 1 508 1 537 1 566 1 594 1 623 1 652 90 1 652 1 681 1 71 1 739 1 768 1 797 1 826 1 855 1 884 1 913 1 942 100 1 942 1 972 2 001 2 03 2 059 2 088 2 117 2 146 2 175 2 205 2 234 110 2 234 3 2 292 2 322 2 351 2 38 2 409 2 439 2 468 2 497 2 527 120 2 527 2 556 2 585 2 615 2 644 2 673 2 703 2 732 2 762 2 791 2 821 130 2 821 2 85 2 88 2 909 2 938 2 968 2 997 3 027 3 057 3 086 3 116 140 3 116 3 145 3 175 3 204 3 234 3 264 3 293 3 323 3 353 3 382 3 412 150 3 412 3 442 3 471 3 501 3 531 3 56 3 59 3 62 3 65 3 679 3 709 160 3 709 3 739 3 769 3 798 3 828 3 858 3 888 3 918 3 948 3 977 4 007 170 4 007 4 037 4 067 4 097 4 127 4 157 4 187 4 217 4 246 4 276 4 306 180 4 306 4 336 4 366 4 396 4 426 4 456 4 486 4 516 4 546 4 576 4 606 190 4 606
9. cooking with steam and adds the advantage of control This is accomplished by reducing the internal atmospheric pressure of the Steam N Hold cooking chamber thereby lowering the temperature at which water begins to boil This allows the operator to control the temperature of the steam for cooking Controlling the steam temperature gives the operator the ability to cook the food to the desired temperature without over cooking resulting in a more tender juicier nutritious product with less shrinkage than was previously possible Once the cooking time expires the steamer automatically enters the Hold mode In this mode the thermostat regulates the internal temperature but vacuum is released returning the cooking chamber to normal atmospheric pressure At this time steam is no longer generated and the cooking chamber is held at the desired temperature at a relative humidity of 100 This eliminates food from drying out by suppressing the evaporation of the products natural moisture As a result most food products can be held in a ready to serve state for several hours after cooking with no appreciable loss in taste appearance or consistency SEQUENCE OF OPERATION MAIN ON OFF SWITCHES Power is supplied through the power cord to the main contactor Power comes off the back side of the contactor to the water board While power is supplied to the water board current is conducted thru the water sensors in the cooking chamber which
10. lune 4 an a t FEAT WHT KAST me ee gt gt NAT RE m 4 m 1 28 H 5477 LU gt WiriiiitOR OMFD L2 _ 1 2 ELK 1 ga Zz 1 2 H c F2 ZRI BLK t 2 TRERWA UMIT vine EW Lon S a a n Ik ID OF 0 ore D BR CONH GICHG Wa ALTI FILL 152 Wo ALTA FILL 184 263 VEL 2 i 3 4 cna UTE 2 7 E c WET GRY L7 BLU tasi WAS 4 i u THR 1 us z4J0 TY E pue 9 JTYPE gt 4 1 2 88 1 1 PHASF 08 246 22 MP5006 1001 Rev A SCHEMATIC 6 PAN 208V amp 240 i ON FR RIN gt SMT Ke THREE PHASE ne RED 2a 0 kl T ae c Fb c 3 7 FI Tu ELF ARP E E A TES RE i cR zn m n i 5 oa AFL gt H DEZ L EH oni Est arr Ard THERMAL 7 Cs SFA 0 OFZ ES ZONNEZ ION CH
11. must sense that water is in the unit to allow it to come on The over temp and water board are in series Both must be satisfied before the unit can turn on When the ON button is pressed it completes the circuit The main contactor will pull in and will send power to the solid state heater relays at the same time latching the CR1 and CR2 control relays Power is also sent to the timer and thermostat The timer has 3 settings HOLD TIME and CONTINUOUS When the timer is engaged power will be sent to the control relay on the top of the pump and the pump will start 4 MP5006 1001 Rev A SYMPTOM TROUBLE SHOOTING GUIDE STEAMER TROUBLE SHOOTING GUIDE POSSIBLE CAUSE EVALUATION Unit will not power up No water in the steamer Fill with up to 3 gallons of water Make sure the water level is above the sensors Water Sensors Scrub and clean with a scotch brite pad Incoming power supply Check breakers reset if required Check the power plug to be sure it is firmly in the receptacle Measure incoming power call the Power Co if necessary Steamer fuses Check and or replace Fuse holder Check and or replace On switch and contacts Check for continuity Control Relays Check continuity of the coil Check for power to relay coil Visually check for contact pull in and contact condition Check for voltage across relay terminals Water Board Check to see if the LED on the water board is on
12. sure it is not plugged up 5 Use Teflon tape on the barrel of the new switch and reinstall Note The 5 W C pressure switch is rated at 1 3 HP and the 60 WC switch is rated at 12 HP mnc P N AT1E 2647 1 LO HE B A P N AT1E 2647 2 5 WIC gt Ie ev wic FIREBAR HEATER REPLACEMENT Turn unit up side down Remove legs and bottom panel Remove all brackets nuts washers spacers over temp nuts over temp plate over temp center heater mount element and the isolator plate 4 Remove any old anti seize from the isolator plate and clean thoroughly 5 Apply new anti seize to both sides of the isolator plate silver grade rated 1600 to 1800 degrees F 6 Apply anti seize to both sides of the new element Keep 2 away from the wire leads 7 Re install in order isolator plate element center heater mount over temp over temp plate and nuts spacers Belleville washers dome side up plain washers new lock nuts torque to 30 inch pounds and front and back Z brackets Tighten in a circular pattern from the inside to the outside 8 Reinstall bottom plate and legs On 14 MP5006 1001 Rev A CAST HEATER REPLACEMENT oat SLO O1 Turn unit upside down Remove legs and bottom panel Remove all nuts Belleville washers fender washers heater mount bracket and heater element Thoroughly clean old thermal paste from the studs and bottom of the unit Apply thermal paste to bottom si
13. when the unit is powered up Clean the sensors and re inspect Check for incoming power and check to make sure the ground is correct If the LED light does not come on replace the board Boards with a 10 second delay is just the opposite Hi Limit NOTE Serial No 3865 to 19117 have a resetable Hi Limit Unplug the unit and locate the access panel on the rear of the unit Push the button in until it clicks If this fails to start the unit after plugging back in check the control relay and or the off contact These units also have a auto reset hi limit purple and brown wires If this is open while the unit goes to low water it needs to be replaced Unit is cooking slow Low vacuum pressure Vacuum pump Remove the top left pan rail in the steaming chamber There will be 1 or two holes If there are two holes the one towards the front is for the pressure switch and does not need to be plugged There may be a third hole located on the lower left side of the chamber and this must be plugged in addition to the top hole From a cold start plug all the holes with your fingers turn the unit on and observe the reading on the vacuum gauge The correct reading should be between 20 to 25 inches of pressure 0 to 5 inches of pressure denotes a faulty pump Check all the hoses and connections for any leaks If the pump does not run at all give the fan blade a push start through the grill If the pump starts it has a b
14. wor Tomy uum 1 2 gt YeTensenscn towne 1 e or 7 LA Lii g BLK THFRMAI MIT POWER ew u LT BRN I CH AFT WO AUTO ILL 1 amp 2 AUTO FILL 1 amp 4 2 amp 3 LOW WET F Cr e d WET m FAST awe TI ere me e a amp TI CNM E li 4 VHT BR 3 WHT E E 5 x 1 gt MEHIN 7 NN 5 POSITION 3403 5 12 3 PHASE 208V 17KW CAST IN HEATER d 33 MP5006 1001 Rev A CONNECTION CHART SCHEMATIC 3 PAN 230V 1 PHASE FILTER Lk qam WET 13asT va EM 533 TIIC THAL LIMIT 5 17 NOR ALL LEM T 182 Wi amp JTO FILL 124 lt to mS FII CAST 34 A 50 m a 8 5 FAST 5 AZ MAC n T 1 arem dii i mi 5 3 A 3 Moses 2 coer E TUM
15. 08 240V Replaces 1 or 2 Relay Mercury Disp 240V 12KW Relay Mercury Disp 208V SP 1269 2 Shell Exterior Truss Screws 8 x 3 8 SS Left Side Panel Solenoid Air 208V Coil Solenoid Air 240V Coil 208V Replacement Coil 240V Replacement Coil Solenoid Rebuild Kit Sol Rebuild Kit new style D803045 Switch Toggle Pressure Switch Single Pressure Switch Pressure Switch Dual Pressure Switch Above 14KW units only On Pushbutton Steamer must use new assy not interchangeable with old style Off Pushbutton Steamer Must use all new assy On Contact Steamer Off Contact Steamer Pushbutton Lock Ring Timer 60 Minute Cooker Ready Timer 180 Minute Cooker Ready Timer 90 Minute Cooker Ready Conversion Wire Harness Crammer Thermostat Timer Repl Knob soft grip Thermocouple DC Thermostat Calibrated 100 200 F AC Thermostat Calibrated 100 200 F Transformer Terminal Block 2 Position Terminal Block Position 8000W Terminal Block 5 Position Vacuum Pump Gast new style Gast vacuum pump rebuild kit Vacuum Pump Thomas 38 5006 1001 Rev A ATR CAP ATR VP2RA ATR THA2 ATR VPLV ATR VPHS Valves ATR BVRK ATOP 3268 1 Water Sensor AT1E 2652 AT1E 2654 1 3230 1 3509 1 3234 1 Capacitor Thomas Pump Only Thomas Rod amp Diaphragm Assy Thomas Head Vacuum Pump Leaf Valves Pair Thomas Pump Only Vacuum Pump Head Replmnt Screws Auto Fil
16. 8 240V iCAST IN HEATER Mv 138440 Wa a 29 MP5006 1001 Rev A SCHEMATIC 3 PAN 208V 240V PHASE OPTIONS RUM PRESSURE SWITCH 4 E CN x 2 cra um i GRN S GR T i Mi nd TK i me 5 q qu G gt Li waren 12 L nawon e T EE Xy BUT cm lt LS CRI BLK BLK THERMAL LIMIT r wn SW3 n 2527 4 5 ZR E f WO AUTO FILL 1 amp 2 Wf AUTO FILL 1 amp 4 283 3 3 1 5 hh TA N 7 m LOAN WAT EF hy Cr Ty GRY gt h DK GAY FAST 4 AST vacswa se 3 1 DR3 c GRE i ed 88H earam in nua sut Ao dob 3 2 PNK e wur 1 T JTYFE TIMER IN a A 5 AT1T 3403 2 3 l HASE 208 240V CAST IN HEATER 30 MP5006 1001 Rev A SCHEMATIC PAN 380V 415V 3 PHASE OPTIONS 1 OVER AUN PRESSJRE 1 Le G ATAG 77 _ 5 piu VPY war aer VPY ont
17. ART WO AJ O ILL 742 ILL 154 253 NEL E Qvo 9 LL 3 n 3 3 9 9 oom m cre Lows eae e 9 3 E 8 ET a deo TAS SW m D ae e 1 55 VEO S r T ss OFS gt i B5 y y TEN 44 g X gt war 1 E amp 3 gt vireo 2988 2 3 PJASF 208 240 23 5006 1001 Rev SCHEMATIC 6 PAN 380V 415V PHASE Lr VER 3UN PRESSURE SwiTc4 UE UA ED 1 RI wp y E nau uc 2 RI BRTN NH FF cm 4 zT x a 3 fa gt d LT EF 2 IR 5 Wi 3 CONNECTION CHART WCF AUTO I 1 amp 2 AUTO FILL 154 253 TRS see PX g c m wk p 3 p HOLL Pul 2988 3 3 PHASE 380 415V 24 MP5006 1001 Rev A SCHEMATIC 6 PAN 440V 480V PHASE OPTIONS OVER FUN PRESSURE SWITCH REI f zn WHT RED T wi mem 23 Fa 3 WATER S
18. ENSORSOLRD L2 yy Him ci PRK ELK e THERIVAL LIKIT SW o zm ess m 7 FILL LY WO AUTO FILL 122 Wi AUTO FIl I 1 amp 4 2 amp 0 un 0 2 m m 244 LOW WATER 8 IN z T A o 5 Qu WHT ORY g de N EN DK GORY AC IK FAST VAG OW4 gt gt C M a 2 mii ER H zx oT 1 A s ES WHTBRM 3 HCLD 4 i v m ir 2 1 2 16 lt JTWE 4 TIMER IN 4 2 HOLD X 11 28BB 4 272 PESTEN PHASE 440 480 25 MP5006 1001 Rev A SCHEMATIC 6 PAN 208V PHASE 17kW OPTIONS ANY mwh HH HEAT r2 N WH GAST gt Oe NAS ORS gt DX 4 a em p N 1 COMAL LIMIT _ rx a Ei 64 2 NNi ea ae tide POWER PHASF 208 17 KW 26 CONNECTION CHART TILL WA WO AUTC FILL 1 amp 2 Wi AUTO F LL 1 amp 4 260 1 3 5 m wet a E E 8 gt WHT env D z FAST VAG S4 5 5 c gt M a 2 THERN I ee
19. MENT Remove inner door as stated above 2 Locate the valve plate assembly and remove the 10 24 nyloc nut and discard Remove cone spring Remove the valve plate assembly from the inner door Remove the 4 8 32 nyloc nuts holding the seals and discard both On each valve first place a flat washer and then a wave washer on the threaded stem of the seal 6 Place each seal assembly back into the valve plate and fasten with the 8 32 nyloc nuts Tighten down until the space between the seal and the valve plate is about the thickness of the flat washer Make sure each seal is free to pivot and rotate 7 Reinstall the valve plate and cone spring Tighten the nyloc nut so that one or two threads protrude through the nylon material 8 Reinstall inner door gt DOOR LATCH REPLACEMENT 1 Remove the inner door as stated above 2 Use a Phillips screw driver and 3 8 nut driver to remove the handle from the outer door 3 Reinstall the new handle REMOVAL AND INSTALLATION 3 PAN MODEL LIGHT BOARD 1 Remove the cover panel to gain access to the components 2 Remove the mounting nuts and molex connections on the board 3 Reinstall in reverse order ALL OTHER COMPONENTS REFER TO THE 6 PAN SECTION 17 MP5006 1001 Rev A INTRODUCTION amp SEQUENCE OF EVENTS AUTOFILL 3 amp 6 PAN MODELS Simple connection to water source via a garden hose style connection Electronic water level control for norma
20. S E WHT i 4 D o CKBRY cook PAST VAG SW 5 5 1 E E gt 6 o ns ens Y gt PE Dj WHR EI TIMEN IN HOLE E 1 Bo POSITION A 1 2988 7 PI IASC 380 415V 28 MP5006 1001 Rev A SCHEMATIC PAN 208V 240V 1 PHASE OI n ONE INT FENAT 1 3111 NT e NTETINAT IONAL 2 EE H g 77 3 3 t ES vi bean m m SA i E m A IR a 1 5 i mam amon Aro 2 uA WAU CHI Lm CRZ GRI 8 CHE 1 HEHMAL LIMIN AYR ke m S m CHI KO ce ume c D ER JE CONNECTION HART Ye AOFI L 1 amp 2 Wr ALTO FILL 1 283 lt a QR GEL e 2 5 i d m cr z gt 5 Se WHT a 5 1T FI m c a Y KARY TAST VAO IVe gt ey HEN mama mum m m m mmm m lt M eal AT1T 3408 1 1 PHASE 20
21. T1L 2804 2 AT1L 2804 3 AT1L OPSUM Overtemps AT1E OTT ATR OT AT1E OT HLX AT1A 2613 1 AT1E 2653 3 AT1E 2653 4 PCB AT1E 2593 1 Overlay 300 90m timer 2 Overlay 100 90M Timer 2 Overlay 400 180M Timer 2 Operator Summary D Model Overtemp Overtemp w pigtail Overtemp Switch Ultimate Overtemp Super Duty 6 pan Overtemp switch Cast htr watts up to incl 14KW Overtemp switch Cast htr watts over 14KW Light Control Board 3 PAN Only Plugs Power Cords 1051 5 AT1E L16 20P Steamer plug Plug Power Cord 250V 30A Locking 37 5006 1001 Rev A PSC310 PG AT1E PSC310 SR Relays 2059 3 2996 1 1587 1 2825 2 2825 4 AT2E 1220 2876 2 Shell AT1M 2979 1 ATOF 2777 31030 AT1M 2981 2 Solenoids AT1E SOL208 AT1E SOL240 ATR S208C ATR S240C 2 Switches ATOE 2874 2 AT1E 2647 1 AT1E 2647 2 3337 1 3337 2 3338 1 3338 2 3339 1 5 ATR TI60 ATOE 2297 2 ATOE 2297 1 ATR WH C ATOH 1455 2 Thermocoupl es ATOE 3661 1 Thermostats ATOE 2559 1 ATOE 2559 2 Transformers ATOE 2662 1 Terminal Block ATOE 1134 2 AT1EH TB3 ATOE 1134 5 Vacuum Pumps AT1E 2991 1 RK935 AT1E 2703 1 Strain Relief Power Supply Cord Solid State Relay D amp A2450 Heat Pad SSR if no heatsink comp Contactor 208 240 3pole Control Relay 240V 3PDT Control Relay 2
22. ad run capacitor Replace as needed 5006 1001 Rev A Unit is cooking slow cont Pressure switch In the FAST cook mode the pressure switch will close once the steam chamber reaches the thermostat setting As the temperature rises the vacuum pressure falls Once the unit reaches 210 to 212 degrees the pressure will be at zero Cycle times when the unit is calling for heat should be around 8 to 10 seconds on and 60 to 90 seconds off Replace the pressure switch if the cycle times are off or if you can suck air through the switch Unit is cooking slow cont Door Gasket Check for cuts or cracks Replace as needed Door Alignment With the unit on and the pump running perform the Dollar Bill test on the door Close the door on a Dollar Bill all four sides of the door There should be resistance when pulling the bill out If the bills comes out easily remove the hinge covers Loosen all of the screws turn the thermostat to150 degrees enable the timer shut the door and turn the unit on so it creates a vacuum and draws the door in and then retighten the screws Door Sealing If the door alignment process does not fix the problem remove the inner door and place it on a flat surface and check for any warpage Also check that the suctions cups are sealing If they have turned gray or white then replace Use one of the pan rails as a Straight edge Straighten and re bend the inner door until it i
23. cuum Gauge 1 1 2 36 5006 1001 Rev A ATOH 3544 1 Heaters AT1A 3530 1 AT1A 3530 2 AT1A 3530 3 AT1A 3530 4 AT1A 3530 6 AT1A 3530 7 Hoses ATOP 2714 1 ATOP 2714 2 AT1P 2555 32000 AT1P 2555 62000 AT1P 2558 1 AT1P 2558 2 AT1P 2558 3 AT1P 2558 4 Lamps ATOE 1800 5 ATOE 1800 4 ATOE 1800 6 ATOE 1800 9 Legs AT1A 3030 1 ATOH 3040 1 2479 7 2479 8 Misc Electronic ATOE 2717 1 Misc Hardware AT1M 2573 1 AT1M 2573 2 AT1M 2590 1 AT1M 2590 2 Lens 2 gauge Cast Heater Kit 208v 6kw 230 7 3 240 8 380 6 7 400 7 4 415 8 440 9 480 10 7 Cast Heater Kit 240k 6kw Cast Heater Kit 208v 8kw 240 10 7 380 9 400 10 415 10 7 480 14 Cast Heater Kit 208v 12 0kw 240 16 380 13 400 14 8 415 16 440 18 Cast Heater Kit 208v 10 0kw Cast Heater Kit 208v 17 0kw Hose Clamp 1 4 Hose Clamp 1 2 1 4 Silicone Hose per ft 1 2 Silicone Hose per ft Hose 1 2 14 Hose 1 4 Cut to Length 9 Hose 1 4 x 15 Hose 1 4 X 22 drain valve Pilot Lamp Unit 208 240V Pilot Lamp Unit 208 240V Pilot Lamp Unit 208 240V Pilot Lamp Unit 208 240V Red Green Amber Clear annn Foot Adjustment Cookers Leg Assembly Kit Steamer Rubber Foot Tip Cooker Stand Caster Non Break Stand Caster Break MOV Transient Suppressor 275V Drip Edge Left Drip Edge Right Bracket Interior Tray Left Bracket Interior Tray Right Overlay Graphics AT1L 2804 1 A
24. de of the new element and install over studs Apply thermal paste to the screw in over temp and install Install in order heater mount bracket fender washers Belleville washers dome side up and new lock nut torque to 25 inch pounds 980 4 9 19684 e e 8 E eet 15 DOOR REMOVAL 1 Leave the door shut 2 Remove the hinge covers 3 Remove the Phillips head screws going into the cabinet and remove door INNER DOOR REMOVAL 1 Remove hinge covers 2 Remove the long top screw in the top hinge and the long bottom screw in the bottom hinge if equipped 3 Insert a flat head screw driver into the slot located on the bottom of the outer door and pry the inner door out FLOATING INNER DOOR REMOVAL SERIAL NUMBERS 29783 AND ABOVE 1 Remove the long top screw in top hinge and the long bottom screw in the bottom hinge if equipped 2 Pull inner door out Angle the rod that is inserted in the spring on the bottom side of the handle out last GASKET REPLACEMENT 1 Remove the inner door as stated above 2 Make sure the gasket is untangled then starting at a corner stretch the gasket to the opposite corner Repeat this sequence on the other corners until all four corners are seated Push the gasket along the edges to firmly seat onto the inner door INNER DOOR VALVE CUP REPLACE
25. down to where the probe is mounted to the unit 7 Remove the two 3 8 nuts 8 Reassemble in reverse order CONTACTOR 1 Unplug the unit 2 Remove the sheet metal screws on the left side panel of the unit 3 Remove the red black and white leads on both sides of the contactor 4 Remove coil wires 5 Remove the 6 32 nyloc nuts that secure the contactor 6 Reassemble in reverse order VACUUM HOSES AND TEES Bo il Unplug the unit Remove the sheet metal screws on the left side panel of the unit Check all hoses and Tees for cracks or leakage Remove clamps and replace 10 MP5006 1001 Rev A SOLID STATE RELAYS 1 Unplug the unit 2 Remove the sheet metal screws on the left side panel of the unit 3 Remove the wires attached to the relay and mark their locations 4 Remove the two mounting screws 5 Reassemble in reverse order Note Relays not mounted on a heat sink should use a heat pad or thermal paste LAMPS Unplug the unit Remove the sheet metal screws on the left side panel of the unit Remove the two wires on the lamp terminals With a pair of pliers depress the locking ears on the switch and push the lamp thru the front Push new lamp in the mounting hole Make sure locking ears engage Reattach the wires mM oo FUSES 1 Unplug the unit 2 Remove the sheet metal screws on the left side panel of the unit 3 Pry the fuses out of the fuse block with a pocket screw driver 11 MP5006 1001
26. e front of the unit Disconnect the wires and mark the pin locations Reassemble in reverse order Note AC thermostats have 6 pins and DC thermostats have 7 pins de Oi TEMPERATURE PROBE TI Unplug the unit Remove the sheet metal screws on the left side panel of the unit Remove the white wire from terminal 4 6 and the red wire from terminal 7 Follow the red and white wire down to the bottom of the unit Peel the insulation aside and remove the retaining nut with a 3 8 nut driver Reassemble in reverse order AC Thermostat DC Thermostat NESE ONS S swe uum WHT 1 3 4 PWR 28VDC PWR COM OUTPUT t J TYPE CONTROLLER CAL OFFSET ADJ J TYPE CONTROLLER CAL OFFSET ADJ 1 Unplug the unit 2 Remove the sheet metal screws on the left side panel of the unit Remove the knob and retaining nut with a 7 nut driver on the front of the unit 4 Disconnect the wires and mark the pin locations 5 Reassemble in reverse order N ote Don t remove jumper wires ics 9 MP5006 1001 Rev A VACUUM AND TEMPERATURE GAUGES 1 Unplug the unit 2 Remove the sheet metal screws on the left side panel of the unit 3 On the vacuum gauge remove the hose form the inlet connection 4 Remove the two 10 24 nuts 5 On the temperature gauge remove the retaining nut on the inlet connection 6 Follow the capillary leads
27. evel control board shuts off the water level control relay and the by pass relay The status LED will change to a slower flash rate of about 1 time per second The heater is turned on and normal operation begins Normal operation the Steamer water reservoir has water in it 1 2 On a full reservoir the Steamer will heat up as normal for normal operation As the water is used up and the water level drops below the High Level Probe the water valve is turned on with no delay period 3 After the water has reached the high water level probe and stays in constant contact a thirty second timing sequence is started This is done to prevent short cycling of the water valve increasing the life and the reliability of the water level control valve 18 MP5006 1001 Rev A 4 When the thirty seconds have been satisfied the water level control board shuts off the water level control K2 relay 5 This process is repeated until the Steamer is shut off TROUBLE SHOOTING GUIDE No water pressure On a first time fill the unit will not fill up with water and the Steamer will not turn the heaters on to prevent damage Check water pressure Check for dirty inlet screen Check for dirty probes Check for power to control board Check for operation of the control valves 2 During operation of the Steamer after successful initial water fill e steamer shuts down after the water level drops below the low water sensor and 10 sec
28. kit water line to the steam chamber water inlet fitting Connect the blue and white control harness part of the brass valve kit to the blue and white connectors originally connected to the plastic water valve terminals Neatly bundle the non connected ends of the yellow and white harnesses that were originally connected to the plastic water valves together with the remaining existing loose wire harnesses and wire tie them together Reconnect the steamer to the power outlet and slowly turn on the water supply while checking for leaks 20 MP5006 1001 Rev A OVERFILL SENSOR SWITCH Unplug the unit Remove the left side panel Remove leads J7 amp J8 from the water board Turn the unit up side down Remove the brass nut for the weep hole drain line Remove the legs and bottom panel Remove the retaining screw from the switch mounting tab and remove the switch Reinstall in reverse order Note Make sure the wires are not close to the heater element DRAIN SYSTEM 1 Remove the drain pan which is inserted in the pan rails on the bottom of the unit 2 Remove the hose clamps from the drain hose connections 21 MP5006 1001 Rev A SCHEMATIC 6 PAN 208V amp 240V SINGLE PHASE OPTIONS INT gt lt lt lt lt n on 4 GRA UNTU gt 7 y LII
29. l Brass Valve Replace Water Fill Solenoid 208V Autofill only Probe Water Sensor PCB Water Board Sensor PCB Autofill Water Board Sensor Water Valve Control Autofill only Sensor Magnetic Reed Switch Autofill 39 MP5006 1001 Rev A
30. l operation A master control valve Multiple level safety controls electronic and mechanical float Operates on city water supply and water pressures 40 60psi Easy to clean and care for Theory of operation The Steamer is connected to the facility water supply via a washing machine or garden hose type supply line from a water spigot or from a nearby sink faucet 8 First time fill With the water supply turned on press the ON button The Steamer will power up with the pump operating The water fill valve will turn on via the K5 relay on the water sense PCB The status LED on the water sensing PCB will flash rapidly about 2 3 times a second Water Fill Sensor PCB mounted K2 relay low water level sensing is bypassed to allow for first time filling of the reservoir The thermostat will be turned off via Water Fill Sensor PCB mounted relay and CR4 bypass relay for the first fill to prevent damage to the heater elements Water will rise to the low level probe and reset the low level circuit of the water control board and reset relay CR4 When the water level reaches the High Level Probe a 30 second delay is initiated to allow for wave action and rapid boiling inside to subside Wave action and rapid boiling would cause a lower than desired amount of water to be injected in the reservoir by tripping the control too soon When the 30 seconds and water level have been satisfied the water l
31. of the unit switch out from the front Reassemble in reverse order CORD AND PLUG ASSY eI Unplug the unit Remove the sheet metal screws on the left side panel of the unit Disconnect the red black and white leads form the contactor Remove the strain relief retaining nut on the inside of the unit and pull the cord out Reassemble in reverse order DRAIN VALVE Unplug the unit Drain all of the water from the chamber Turn the unit upside down and remove the legs and bottom panel Use a strap wrench to remove the valve Reassemble in reverse order GUTTERS 1 2 Remove the sheet metal screws on the bottom front of the unit Two on the right and two on the left There are right and left oriented gutters The right gutter will have a hole 5 8 from the left side and the left gutter will have a 5 8 from the right side Gutters need to angle down towards the drip pan EA Sr A MP5006 1001 Rev PRESSURE SWITCH Unplug the unit Remove the sheet metal screws on the left side panel of the unit Remove the wires from the top and bottom leads of the switch Use Teflon tape on the barrel of the new switch and reinstall TOM S DUAL PRESSURE SWITCH Unplug the unit Remove the sheet metal screws on the left side panel of the unit Remove the wires from the top and bottom leads off of the switches Remove the brass elbow attached to the J tube going into the chamber Make
32. ond delay has passed for wave and boiling action e Check the conditions listed above for reasons of non operation 3 Water level sensing fails If the water level control valve becomes stuck on a mechanical float will shut down the whole Steamer and the water supply by turning off the master water control valve 4 f the water level sensing control board becomes faulty the mechanical float will shut down the Steamer 5 If the float has been removed e The Steamer will not start up until the float is re installed e Cleaning the chamber is still easy by just lifting out the mechanical float and wiping down as normal each night 19 MP5006 1001 Rev A REMOVAL AND INSTALLATION WATER FILL SENSOR CONTROL BOARD BR Unplug the unit Remove the sheet metal screws on the left side panel of the unit Disconnect the wires and mark the pin locations Remove the nylon mounting pins Reassemble in reverse order WATER FILL VALVE oR Unplug the unit Serial numbers 27604 and below have two plastic bodied water valves These are discontinued and are being replaced with a heavier duty brass valve Remove the plastic body water valves and all of the plastic water lines Remove the water line brass fitting from the water inlet fitting Install the brass water valve kit into the water inlet fitting which is mounted on the back wall of the steamer enclosure using thread sealant Connect the brass water valve
33. s flat and re install using the door alignment procedure Quick Release Door On the inner door check that the four suction cups are sealing and that the spring is functioning properly Replace as needed Unit is over temping Solid State Relay Check the cycle times as stated above Check the voltage between T1 and L1 If the LED light is on there should be 0 voltage If the unit does not cycle and the LED stays on replace the relay Over temp Ohm out the Hi limit to see if it is good Clean the sensors and check the water board If the low water light comes on while the unit is heating up refer to the Hi limit procedure Thermocouple type J Check that the thermocouple is wired correctly to the thermostat White is positive Terminal 6 and Red is negative terminal 7 Reversing the terminals will result in a run away condition See attached chart for DC milli volt readings MP5006 1001 Rev Unit is over temping cont Thermostat When a unit is at an altitude of 2 500ft water boils at this altitude at about 207 degree s In thermostat mode unit starts blowing steam out the door just after heat light goes out It will do this because of extra heat in the element when it shuts off at about 205 degree s drift point is at least 2 degree s If you have the tech set thermostat at 190 degree s and put in fast cook it will run at the point customer wants to cook at
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