Moyer Diebel 401-HTM2 PLUS Technical Manual Download Page 16

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MAINTENANCE

MAINTENANCE

The efficiency and life of your machine is increased by regularly scheduled preventive
maintenance. A well maintained machine gives better results and service. An investment of a few
minutes of daily maintenance will be worthwhile.

The best maintenance you can provide is to keep your machine clean. Components that are not
regularly cleaned and flushed will clog and become inoperative.

Intervals shown in the following schedules represent an average length of time between necessary
maintenance. Maintenance intervals should be shortened whenever your machine is faced with
abnormal working conditions, hard water, or multiple shift operations.

Cleaning Schedule

Daily-Every 8 Hours

1. Depress 

the 

ON/FILL/OFF/DRAIN

switch to 

OFF/DRAIN 

position and close and

latch the door to drain the tank.

2. 

Open the door and remove the  upper and lower spray arms by unscrewing the knurled
fastener.

3. 

Remove the scrap screen carefully to keep soil or waste particles from falling into the 
sump. Remove any material caught in pump intake.

4. 

Clean inside the tank with clean water. Backflush the scrap screen until it is clean. Do 
not strike the screen against solid objects.

5. 

Clean the wash arms to remove any debris from spray openings. Do not strike the
spray arms against solid objects.

6. 

Reinstall the scrap screen and spray arms.

7. 

Leave the door open overnight to allow drying.

8. 

Report any unusual conditions to your supervisor.

Meal Periods

1. 

Clean the scrap screen after every meal period and more frequently during heavy
usage. Do not allow the scrap screen to become clogged with soil or waste particles.

Summary of Contents for 401-HTM2 PLUS

Page 1: ...Manual Undercounter Dishwasher Model 401 HTM2 PLUS 401 HTNM2 PLUS 401 LTM2 PLUS Manual P N 0510645 September 2003 2674 N Service Road Jordan Station Ontario Canada L0R 1S0 Moyer Diebel Ltd Fax 905 562 4618 905 562 4195 Machine Serial No ...

Page 2: ...icable _____________________________________________________________________________ Moyer Diebel Service Agency ________________________________ Phone _____________ _____________________________________________________________________________ Moyer Diebel Service Moyer Diebel Limited Phone 1 905 562 4195 1 800 263 5798 Fax 1 905 562 4618 NOTE When calling to order parts be sure to have the model ...

Page 3: ...Revision History Revision Revised Serial Number Comments Date Pages Effectivity 7 16 03 All Issue of manual and replacement parts lists REVISIONS ...

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Page 5: ...g Schedule 10 Deliming 11 Deliming Process 11 Maintenance Schedule 12 TROUBLESHOOTING 13 REPLACEMENT PARTS 15 ELECTRICAL DIAGRAMS 39 TIMER CHARTS AND DIAGRAMS 44 LIST OF FIGURES Figure 1 Track and Panel Assembly 16 Figure 2 Door and Switch Assembly 18 Figure 3 Tank Drain Assembly 20 Figure 4 Pump Assembly 22 Figure 5 Wash System Assembly 24 Figure 6 Booster Assembly and Water Inlet Piping HT PLUS ...

Page 6: ...p Assembly 34 Figure 11 Control Panel Assembly 36 Figure 12 Electrical Diagram 401 HT PLUS 40 Figure 13 Electrical Diagram 401 HTN PLUS 41 Figure 14 Electrical Diagram 401 LT PLUS 42 Figure 15 Timer Chart and Diagram 401 HT PLUS 43 Figure 16 Timer Chart and Diagram 401 LT PLUS 44 ...

Page 7: ...Warranty information Installation and operation procedures Maintenance instructions Troubleshooting guide Replacement parts lists Complete and return your warranty registration card as soon as possible Moyer Diebel constantly improves its products therefore specifications contained in this manual may have changed For your protection factory authorized parts should always be used Replacement parts ...

Page 8: ...reakers d Adjustment of thermostats e Adjustment of clutches f Opening or closing of utility supply valves or switching of electrical supply current g Adjustments to chemical dispensing equipment h Cleaning of valves strainers screens nozzles or spray pipes i Performance of regular maintenance and cleaning as outlined in operator s guide j Damages resulting from water conditions accidents alterati...

Page 9: ...vertical Detergent and rinse aid pumps Final rinse sentry feature high temp models only This series of dishwahers is available in he following models Model Numbers 401 HT PLUS 401 HTN PLUS 401 LTPLUS The 401 HT PLUS model is a high temperature 82 C 180 F rinse sanitizing model with booster and the final rinse sentry feature The 401 HTN PLUS model is a high temperature customer supplied 82 C 180 F ...

Page 10: ...k Electrical Power Requirements Booster Machine Power Requirement Model Voltage Rise Full Load Amp 125 Service Factor 401 LT PLUS 115 60 1 N A 9 15 401 HTN PLUS 115 60 1 N A 9 15 401 HT PLUS 208 60 1 40 33 42 401 HT PLUS 240 60 1 40 37 47 401 HT PLUS 208 60 1 70 45 57 401 HT PLUS 240 60 1 70 51 64 NOTE 208 230V 60Hz 1PH electrical supply service must be a 3 wire plus ground for connection as shown...

Page 11: ...onnections must comply with the National Electrical Code and or Local Electrical Codes WARNING When working on the dishwasher disconnect the electric service and tag it to indicate work is being done on that circuit 1 The electrician should compare the electrical specifications on the machine electrical rating label located on the lower left front panel to the electrical power supply before connec...

Page 12: ...a liquid detergent dispensing pump Insert the labeled detergent pickup tube into the detergent container The pickup tube has a strainer on the end to prevent crystallized chemical from clogging the supply lines 2 The cycle timer located in the main control cabinet is equipped with adjustable cams for the chemical dispensing pump s The cams control the length of time that the pumps operate A qualif...

Page 13: ...the Installation and Service toggle switch to the ON position Electrical power is now supplied to the machine WARNING Failure to prime the booster may cause damage to the booster elements and other electrical components and will void the warranty 4 After plumbing and electrical connections are completed check the machine for water leaks by depressing the ON FILL OFF DRAIN to the ON FILL position t...

Page 14: ...pen the door and remove the rack of clean ware Daily Operation Procedures The operation of your dishwasher will be more efficient when these procedures are followed 1 Check that the spray arm and scrap screen are in place 2 Close and latch the door Push the ON FILL switch to the ON position The tank will begin filling with water This procedure is followed only when the tank is empty 3 When the tan...

Page 15: ...d 9 Open the door and remove the rack 10 Repeat steps 4 9 for additional cycles Machine operation is automatic 11 CLEAN the scrap screen after every meal period During heavy usage the scrap screen should be cleaned more frequently CAUTION Poor machine performance and or damage to the machine can occur if the scrap screen becomes clogged with soil or waste particles 12 To drain water out of the tan...

Page 16: ...1 Depress the ON FILL OFF DRAIN switch to OFF DRAIN position and close and latch the door to drain the tank 2 Open the door and remove the upper and lower spray arms by unscrewing the knurled fastener 3 Remove the scrap screen carefully to keep soil or waste particles from falling into the sump Remove any material caught in pump intake 4 Clean inside the tank with clean water Backflush the scrap s...

Page 17: ... detergent sanitizer and rinse aid pick up tube s from the container s Place the tube s into a container of hot water b Ensure ON FILL OFF DRAIN switch is in the ON position depress and hold the DET prime switch located on the front panel until clear water enters the tank through the fill air gap located on the right side of the tank c Your machine is equipped with a sanitizer and or rinse aid pum...

Page 18: ... LT PLUS carefully follow the following procedure before deliming 1 Remove the sanitizer tube from the container Place the tube into a container of hot water 2 Depress and hold the SANITIZER prime switch located on the front panel until all sanitizer has been purged from the hoses 3 Close the door and depress the door latch Complete two operating cycles to purge the machine of all sanitizer Delimi...

Page 19: ...in use at machine too low 60 C 140 F for all machines Insufficient pumped spray Clogged spray arms Clean pressure Scrap screen full Must be kept clean and in place Low final rinse temperature Low incoming water Check the booster be sure the temperature thermostat is set to maintain 66 C 180 F temperature 401 L PLUS is 60 C 140 F Check all valves to be sure they are clean and operating Poor washing...

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Page 21: ...15 REPLACEMENT PARTS REPLACEMENT PARTS ...

Page 22: ...16 REPLACEMENT PARTS 12 12 12 11 10 00050 9 6 5 4 3 7 2 1 8 Figure 1 Track and Panel Assembly ...

Page 23: ...el 1 3 0501413 Screw 10 32 x 3 8 Lg Round Head 2 4 0501415 Screw 10 32 x 5 8 Lg Round Head 4 5 0308632 Track RH 1 6 0308631 Track LH 1 7 0708647 Cover Vent 2 8 0308736 Panel LH Side 1 9 0308734 Panel Rear HT PLUS 1 9 0309573 Panel Rear LT PLUS HTN PLUS 1 10 0308737 Panel RH Side 1 11 0308735 Panel Top 1 12 0501412 Screw 10 32 x 3 8 Lg Truss Head 10 ...

Page 24: ...18 REPLACEMENT PARTS 1 2 3 5 7 8 9 10 11 12 13 14 15 16 17 18 15 1 6 4 1 00020 Figure 2 Door and Switch Assembly ...

Page 25: ...436 Plunger Door Catch 1 7 0508545 Gasket Steam 2 8 104883 Screw Round Head 6 32 x 3 8 2 9 0709431 Plate Door Switch 1 10 111090 Switch Door Magnetic Reed 1 11 0508544 Gasket Upper Door 1 12 0508543 Gasket Side Door 2 13 0501539 Nut Plain 1 4 20 2 14 0503715 Spring Door Hinge 2 15 0501421 Bolt 1 4 20 x 1 1 4 Hex Head 4 16 0708564 Arm Door Hinge 2 17 0501501 Washer Lock 1 4 Split 2 18 0708527 Door ...

Page 26: ...20 REPLACEMENT PARTS THERMOMETER CALLED OUT IN CONTROL BOX TO PUMP DRAIN 16 14 5 6 8 6 7 TO DRAIN 13 14 19 12 11 10 9 TO RINSE 1 00037A 4 3 2 Figure 3 Tank Drain Assembly ...

Page 27: ...Thermometer 2 4 0508872 Adapter Thermometer 1 5 0507265 Hose 5 8 ID x 7 8 OD PVC Braided 3 ft 2 6 0510082 Clamp hose 2 7 0509302 Hose 5 8 ID x 1 OD Braided PVC 1 8 0306618 Valve Drain 1 9 0508578 Adapter Pump Tube 1 10 104414 O ring 1 11 0508579 Nut Jam 1 8 1 12 0308655 Tube Pump Outlet 1 13 110562 Thermostar High Limit 1 14 108954 Nut Grip 6 32 w Nylon Insert 2 ...

Page 28: ...22 REPLACEMENT PARTS TANK BOTTOM 12 14 13 11 10 9 8 7 6 5 4 2 3 1 00005 Figure 4 Pump Assembly ...

Page 29: ...peller 1 7 0502746 Adapter Plate Suction 1 8 0502745 Plate Drain lnlet 1 9 0502703 O ring 1 10 0502744 Propeller Rotating Seal Assembly 1 11 0502743 Mounting Plate Seal Assembly Includes Item 10 1 12 0501881 Gasket Pump 1 13 0508665 Screw 10 32 x 5 8 Hex Washer Head 8 14 0508570 Washer Sealing Teflon 8 0710071 Pump Motor Assembly 60 Hz 115V 1 107966 Nut Grip 10 32 SST Not Shown For mounting Item 1...

Page 30: ...FROM PUMP TANK BOTTOM PUMP 2 13 TOP OF HOOD 12 11 10 9 10 8 7 6 5 4 3 2 1 00038A 24 REPLACEMENT PARTS Figure 5 Wash System Assembly ...

Page 31: ...Upper Wash Arm 1 4 0503588 O ring 1 1 8 x 1 3 8 1 5 0501412 Screw 10 32 x 3 8 Truss Head 3 6 0508541 Bushing Upper Wash Arm 1 7 0710593 Wash Arm Upper 1 8 0505042 Pivot Upper Wash Arm 1 9 0308783 Retainer Upper Pivot 1 10 0501563 Screw 8 x 3 8 Truss Head 2 11 0501684 Nut Spray Arm Lock 1 12 0705049 Wash Arm Lower 1 13 0508540 Bushing Lower Wash Arm 1 ...

Page 32: ...26 REPLACEMENT PARTS 5 6 8 9 11 12 13 14 15 16 THERMOSTAT CALLED OUT IN CONTROL BOX F R O M F IL L V A L V E 3 4 7 6 15 10 1 4 3 1 2 Figure 6 Booster Assembly and Water Inlet Piping HT PLUS Only ...

Page 33: ...her Lock 1 4 Split 5 7 108954 Nut Grip 6 32 w Nylon Insert 2 8 110562 Thermostat high limit 1 9 0509042 Tank booster tank only 1 10 107417 Hose 1 2 I D 28 A R 11 0508817 Plug pipe 1 8 1 12 109985 O ring gasket 1 13 111235 Heater element 6KW 40 rise 208 230V 1PH 1 14 111233 Heater element 9KW 70 rise 208 230V 1PH 1 15 0501539 Nut plain 1 4 20 1 16 107908 Cover heater element 1 110997 Wire Jumper He...

Page 34: ...28 REPLACEMENT PARTS Figure 7 Water Inlet Piping HTN PLUS LT PLUS Only 1 2 3 5 6 11 12 13 14 10 7 8 9 2 2 WATER CONNECTION TO FILL 4 00049 3 4 ...

Page 35: ...07417 Hose 1 2 I D HTN PLUS Only 3 ft 5 0502653 Elbow 3 8 MPT x 1 2 Hose x 90 Brass 1 6 0504952 Valve solenoid 3 8NPT 1 7 0502811 Repair kit 3 8 valve 1 8 0505235 Coil 115V 3 8 valve 1 9 0504958 Flow washer 3 8 valve 1 10 0501501 Washer lock 1 4 split 2 11 0501419 Bolt 1 4 20 x1 2 Hex Hd 2 12 0300203 Clamp valve support 1 13 0502618 Coupling 3 8 MPT x 3 4 hose barb 1 14 0505320 Washer hose 1 ...

Page 36: ...LACEMENT PARTS 4 3 7 6 4 5 2 3 4 3 2 4 1 8 From Detergent Pump See Corresponding Pump For Hose From Sanitizer Rinse aid Pumps RH Side of Tank From Top of Booster or From Fill Valve 00039 Figure 8 Fill System ...

Page 37: ... Item No No 1 107417 Hose 1 2 I D HTN PLUS LT PLUS A R 2 0501518 Tie Wrap Hose 2 3 106090 Bracket Tie Wrap 3 4 107966 Nut Grip 10 32 w Nylon Insert 8 5 0509048 Gasket Inlet Chute 1 6 0508867 Inlet Chute 1 7 0501519 Tie Nylon 4 3 8 107417 Hose Fill 1 2 I D 3 ft ...

Page 38: ...nt Rinse Aid Pump Assemblies HT PLUS HTN PLUS TO DETERGENT SUPPLY 20 19 18 15 16 15 17 15 15 10 9 8 12 11 7 6 5 3 2 1 4 TO FILL ASSY 14 13 00022 TO CHEMICAL SUPPLY 20 19 26 25 25 21 24 23 22 TO FILL SYSTEM 4 2 7 6 Detergent Rinse Aid 16 1 ...

Page 39: ...A Rotor Assembly 1 11 108194 Hose Pump 1 12 N A Cover Pump Housing 1 13 N A Washer Flat M4 4 14 N A Nut Wing M4 4 15 0501519 Tie Wrap Hose 2 16 0502667 Hose Detergent 1 4 I D PVC Clear A R 17 0502644 Elbow 1 4 O D x 90 Barbed 2 18 0503695 Label Detergent 1 19 0306363 Tube Pick Up 1 20 0501869 Strainer Pick Up Tube 1 21 0501519 Tie Wrap Hose 2 22 0707142 Rotor Assembly 1 23 0706634 Element Tube Ass...

Page 40: ...34 REPLACEMENT PARTS TO CHEMICAL SUPPLY 14 13 12 11 10 10 15 9 8 7 6 5 2 3 1 4 DETERGENT PUMP SEE FIG 9 TO FILL SYSTEM 00002 Figure 10 Detergent Sanitizer Rinse Aid Pump Assembly LT PLUS Only ...

Page 41: ...sher Lock 8 Split 4 6 0504822 Screw 8 32 x 1 2 Lg Pan Head 4 7 0707142 Rotor Assy 1 8 0706635 Element Tube Assy 45cc min 1 9 0506589 Screw 6 32 x 7 8 Lg Pan Head 2 10 0502666 Hose 1 8 I D PVC Clear A R 11 0503694 Label Sanitizer 1 12 0505483 Label Rinse Aid 1 13 0306363 Tube Pick Up 1 14 0501869 Strainer Pick up Tube 1 15 0501519 Tie Wrap Hose 2 0709624 Detergent Pump Assy 1 lncludes Detergent Pum...

Page 42: ...L1 L2 T2 T1 S L UP 1 2 5 4 3 6 7 8 22 23 15 16 18 19 20 21 17 9 10 11 12 13 14 21 00033A 25 ON OFF FILL 24 36 REPLACEMENT PARTS Figure 11 Control Panel Assembly ...

Page 43: ...w 10 32 x 3 4 Rd Hd 1 10 0501493 Washer lock 10 ext tooth 1 11 0507709 Washer flat 10 ss 2 12 0501533 Nut plain 10 32 Brass 2 13 0503749 Board terminal 1 14 0310330 Bracket thermostat 401 HT PLUS only 1 15 109069 Thermostat booster 401 HT PLUS only 1 16 113622 Thermometer 4 ft Gas Filled 1 17 0508551 Lamp green 1 18 0501361 Switch rocker DPDT 1 19 0501369 Switch rocker Spring return 1 20 0509568 L...

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Page 45: ...39 ELECTRICAL SCHEMATICS ELECTRICAL SCHEMATICS ...

Page 46: ...1 1 SKH SCHEMATIC 401 SERIES HIGH TEMP 0510652 A JUL 28 03 TOLERANCE DECIMAL ANGLE SCALE FORMING DIMENSIONS ARE FROM BRAKELINE TO BRAKELINE UNLESS OTHERWISE NOTED A B C D E F G H J ISSUED DR CH RTG HOLE DIMENSIONS RELEASED TO PRODUCTION ECN DESCRIPTION BY CH DATE REV DRAWING NO CLT CYCLE ON LIGHT CAM 2 PUMP MOTOR CAM 3 PUMP MOTOR REVERSING CAM 7 DETERGENT BHTR BOOSTER HEATER CAM 8 CYCLE CAM 4 DRAI...

Page 47: ... 8 8 8 15 14 13 WASH 15 9 9 1CR DSS 50 2 1 S L M 1 34 CAM 8 CYCLE CLT CYCLE ON LIGHT DM DETERGENT MOTOR DP DRAIN PUMP IF USED RL RELAY DV DRAIN VALVE FV FILL VALVE GND GROUND GRN GREEN SRC CURRENT OPERATED START RELAY COIL RM RINSE MOTOR IF USED MSW MAIN SWITCH ON FILL OFF DRAIN TM TIMER MOTOR TP THERMAL PROTECTOR WTS WATER THERMOSTAT HTLS HIGH LIMIT THERMOSTAT WHTR WATER HEATER WHT WHITE SM SANIT...

Page 48: ...SDR 16 PSS IF USED IF USED CAM 7 NO NC SM ON OFF NC NO CAM 2 NO NC CAM 5 NO NC 1CR TO CUSTOMER RECEPTACLE MSW TP MAIN START CCW START CW GRN WHT BLK BLU RED GND GND SRC 5 4 3 2 1 DP RM DM D V NC NO CAM 6 NC NO CAM 8 CAM 4 NO NC NC CAM 3 NO F V DRAIN RINSE TM CLT NC NO NO NC CAM 9 CAM 1 CUSTOMER TO SUPPLY RATED VOLTAGE PHASE Hz AS SPECIFIED PER ORDER TO DISCONNECT SWITCH ALL POWER SUPPLIED TO EACH ...

Page 49: ... 1 2 2 3 4 5 6 7 8 WASH PUMP WASH PUMP WASH PUMP REVERSING CAM DRAIN VALVE FILL VALVE RINSE DETERGENT AUTO FILL HOMING CAM PUMP DRAIN PUMP 150 FORWARD WASH REVERSE DRAIN DRAIN PUMP OPTIONAL SYNCHRON 8 7 6 5 4 3 2 1 TIMER MOTOR LOCKING SCREW TIMER SWITCH DETAIL N C N O COM 9 RINSE SENTRY If booster thermostat is calling for heat cam 9 will pause wash cycle until it reaches 82 C 180 F 9 OPTIONAL ...

Page 50: ... 140 TIME IN SECS CAM 1 2 2 3 4 5 6 7 8 WASH PUMP WASH PUMP WASH PUMP REVERSING CAM DRAIN VALVE FILL VALVE RINSE DETERGENT AUTO FILL HOMING CAM PUMP DRAIN PUMP SANITIZER PUMP 150 FORWARD WASH REVERSE DRAIN DRAIN PUMP TIMER ASSEMBLY 401 LTM2 SYNCHRON 8 9 7 6 5 4 3 2 1 TIMER MOTOR LOCKING SCREW TIMER SWITCH DETAIL N C N O COM 00043M ...

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