Simply Engineered Better Technical Manual Undercounter Dishwasher Model 401-HT 401-HTN 401-LT Machine Serial No. February, 2003 Manual P/N 0509604 REV. G 2674 N. Service Road Jordan Station, Ontario, Canada L0R 1S0 Moyer Diebel, Ltd.
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REVISIONS Revision History Revision Date Revised Pages Serial Number Effectivity Comments 02/28/97 All 7791 Issue of manual and replacement parts lists. 09/09/98 27 7791 Changed booster tank part number. 09/09/98 29 7791 Changed item 15 hose part number. 02/28/00 40, 41, 42, 43 7791 Revised electrical schematic. 07/21/00 17, 23, 37 7791 Revised part numbers. 08/22/01 21 — Revised part numbers. 12/12/01 27 — Revised fill hose part number.
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CONTENTS CONTENTS Page INTRODUCTION....................................................................................................................................... 1 WARRANTY .............................................................................................................................................. 2 GENERAL .................................................................................................................................................. 3 INSTALLATION ..............
CONTENTS Figure 9—Detergent Pump Assembly......................................................................................................... 32 Figure 10—Sanitizer/Rinse-Aid Pump Assembly....................................................................................... 34 Figure 11—Control Panel Assembly........................................................................................................... 36 Figure 12—Electrical Diagram, 401-HT................................................
INTRODUCTION INTRODUCTION Welcome to Moyer Diebel. Thank you for choosing Moyer Diebel and for allowing us to take care of your dishwashing needs. This manual covers several models. Model numbers are shown on the front cover. Your machine has been completely assembled, inspected, and thoroughly tested at our factory to eliminate problems at installation before it was shipped to your installation site.
WARRANTY LIMITED WARRANTY Champion Industries/Moyer Diebel Limited, P.O. Box 4183, Winston-Salem, North Carolina 27115, and P. O. Box 301, 2674 North Service Road, Jordan Station, Ontario, Canada L0R 1S0 warrants machines, and parts, as set out below.
GENERAL GENERAL This manual covers the Moyer Diebel 401 undercounter dishwashing machine. This machine is fully automatic and is equipped with a 1/2 H.P. pump motor. All models are available for mounting directly to the floor or on optional stands (see accessories listed on page 4).
GENERAL Accessories • 17RS - 17" rack stand (raises working height and adds rack storage) • 17T - 17" cabinet (raises working height and adds storage) • CST - Combination sink/table (scraping and sorting station) • 101285 - Dish Rack (Peg Rack) • 101273 - Silverware Rack (Flat Bottom Rack) Electrical Power Requirements Model Voltage Booster Rise Machine Full Load Amp Power Requirement (125% Service Factor) 401-LT 115/60/1 N/A 9 15 401-HTN 115/60/1 N/A 9 15 401-HT 208/60/1 40 33
INSTALLATION INSTALLATION Unpacking ! WARNING: Care should be taken when lifting the machine to prevent damage. 1. Immediately after unpacking your machine, inspect for any shipping damage. If damage is found, save the packing material and contact the carrier immediately. 2. Remove the dishwasher from the skid. Adjust the feet if required, then move the machine to its permanent location. 3. Level the machine (if required) by placing a level on the top of the machine and adjusting the feet.
INSTALLATION Plumbing Connections ! CAUTION: Plumbing connections must comply with local sanitary and plumbing codes. Water Connections 1. Connect the hot water supply (60°C/ 140°F Min) to the 1/2" I.D. fill hose provided. The fill solenoid valve is equipped with a flow control that will accept water pressures from 172 kPa/25 psi to 665 kPa/95 psi. 2.
INSTALLATION Completing Installation 1. Remove any foreign material from inside the machine. 2. Center the scrap screen over the sump opening. 3. Prime the booster using the following procedure (if applicable). ! CAUTION: To prime the booster, the following procedure must be followed AFTER the electrical and plumbing connections have been made and water has been turned on. a. Open the dishwasher door. b. Make sure the On-Fill/Off-Drain switch is in the Off-Drain position. c.
OPERATION OPERATION Operation Summary (See Timer Chart in back of manual) The following is a summary of your Undercounter Dishwashing Machine operating cycle: 1. The cycle begins when you close and latch the door. 2. The green cycle lamp lights and the wash pump starts. 3. The pump runs during the wash cycle for approximately 80 seconds. 4. The wash pump stops, and the drain valve is opened. 5. After a 2-3 second pause, the pump drain cycle begins and continues for approximately 30 seconds. 6.
OPERATION NOTE: The machine may be stopped at any time by opening the door. When restarted, the cycle does not start over. It will continue from the point at which it was interrupted. 7. Check the rinse temperature during the final rinse (120 seconds into cycle). The rinse temperature must be 82°C/180°F minimum for models 401-HT and 401-HTN and 60°C/140°F for model 401-LT. 8. The pump will automatically stop and the green cycle light will turn off indicating the cycle is completed. 9.
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.
MAINTENANCE Deliming Your dishwasher should be delimed regularly as required. This will depend on the mineral content of your water. Inspect your machine interior for lime deposits. If deliming is required, a deliming agent should be used for best results.
MAINTENANCE Maintenance Schedule • • 12 As Required 1. Check the temperature gauge reading. 2. Check the chemical supplies and refill as necessary. Weekly 1. Inspect all water lines for leaks and tighten them at joints if required. 2. Clean all detergent residue from the exterior of the machine. 3. Check the drain for leaks. 4. Remove and closely inspect the spray arm for blockage. 5. Check for damage to the scrap screen.
TROUBLESHOOTING TROUBLESHOOTING Before determining any specific cause of a breakdown or abnormal operation of your dishwasher, check that: 1. Power supply is turned on. All switches are ON. 2. Wash arm is clean. 3. Scrap screen is properly positioned and clean. 4. Thermostat is at the correct setting. 5. Sanitizer, detergent, and rinse additive dispensers (if equipped) are adequately filled. 6. All plumbing valves are open and drain hose is not kinked.
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REPLACEMENT PARTS REPLACEMENT PARTS 15
REPLACEMENT PARTS 00050 12 11 10 12 7 6 9 4 5 3 12 2 8 1 Figure 1 — Track and Panel Assembly 16
REPLACEMENT PARTS TRACK AND PANEL ASSEMBLY Fig. 1 Item No. 1 2 3 4 5 6 7 8 9 10 11 12 Part No. 0508751 0309572 0501413 0501415 0308632 0308631 0708647 0308736 0308734 0308737 0308735 0501412 Description Screw, 10-32 x 1-1/2" Lg. Truss Head ....................................... Front Panel ................................................................................. Screw, 10-32 x 3/8" Lg. Round Head......................................... Screw, 10-32 x 5/8" Lg. Round Head.........................
REPLACEMENT PARTS 00020 11 1 4 5 7 8 6 10 12 9 3 1 13 14 2 1 18 15 16 17 Figure 2 — Door and Switch Assembly 18 15
REPLACEMENT PARTS DOOR AND SWITCH ASSEMBLY Fig. 2 Item No. Part No. Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 - 0501412 0308596 0308597 0508721 0709462 0509436 0508545 104883 0709431 111090 0508544 0508543 0501539 0503715 0501421 0708564 0501501 0708527 0508555 Screw, 10-32 x 3/8" Truss Head................................................. Plate, Door Latch........................................................................ Handle, Door Latch ........................................
REPLACEMENT PARTS 00037 1 2 3 4 5 THERMOMETER (CALLED OUT IN CONTROL BOX) 6 7 12 TO DRAIN 11 11 8 10 9 Figure 3 — Tank/Drain Assembly 20 TO PUMP
REPLACEMENT PARTS TANK/DRAIN ASSEMBLY Fig. 3 Item No. 1 2 3 4 5 6 7 8 9 10 11 12 Part No. 0508628 201029 0501836 0508872 0501539 0501501 0308611 0306618 0501418 0507265 0510082 0509302 Description Scrap Screen............................................................................... Locknut, 1/2 NPT Nickel-Plated................................................ O-Ring, Thermometer ................................................................ Adapter, Thermometer ...................................
REPLACEMENT PARTS 00005 1 3 2 4 5 6 7 8 9 10 11 13 14 12 TANK BOTTOM Figure 4 — Pump Assembly 22
REPLACEMENT PARTS PUMP ASSEMBLY Fig. 4 Item No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 **- Part No. 0508542 0501431 0501425 0502742 0502741 0502704 0502746 0502745 0502703 0502744 0502743 0501881 0508665 0508570 0508973 0710072 107966 Description Spindle, Lower Wash Arm ......................................................... Screw, 8-32 x 1-1/8" Round Head.............................................. Screw, 8-32 x 5/8" Round Head ................................................. Housing, Top (No Hole)......
REPLACEMENT PARTS 00038 1 2 3 4 PUMP TANK BOTTOM Figure 5 — Wash System Assembly 24
REPLACEMENT PARTS WASH SYSTEM ASSEMBLY Fig. 5 Item No. 1 2 3 4 Part No. 0501563 0501684 0705049 0508540 Description Screw, #8 x 3/8" (Sheet Metal) Truss Head ............................... Nut, Spray Arm Lock ................................................................. Wash Arm, Lower ...................................................................... Bushing, Lower Wash Arm ........................................................
26 10 2 15 11 9 8 14 23 12 SYSTE M 13 TO FILL 16 1 7 24 2 17 4 6 3 5 18 19 20 9 21 22 21 THERMOSTAT (CALLED OUT IN CONTROL BOX) 00040 REPLACEMENT PARTS Figure 6 — Booster Assembly and Water Inlet Piping (HT Only)
REPLACEMENT PARTS BOOSTER ASSEMBLY AND WATER INLET PIPING (HT ONLY) Fig. 6 Item No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 *19 *19 20 21 22 23 24 Part No. 0509214 0503679 0502653 0508840 108954 110562 0509607 0501419 0501501 0509526 0502618 0504952 0502811 0505235 0504958 0509606 0508817 109985 111233 0708753 111235 0501539 107908 0503718 100171 Description Hose, 1/2" I.D............................................................................. Clamp, hose........................................
15 WATER CONNECTION 10 Figure 7 — Water Inlet Piping (HTN, LT Only) 28 2 TO FILL 2 1 5 6 7 8 9 3 4 13 14 12 11 2 14 00049 REPLACEMENT PARTS
REPLACEMENT PARTS Fig. 7 Item No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Part No. 0503718 0503679 0502665 0509214 0502653 0504952 0502811 0505235 0504958 0501501 0501419 0300203 0502618 0505320 0509526 WATER INLET PIPING (HTN, LT ONLY) Description Foot, adjustable .......................................................................... Clamp, hose................................................................................ Hose, 1/2" I.D. clear braided (LT Only).....................................
30 From Sanitizer Rinse-aid Pumps From Detergent Pump 4 4 6 (See Corresponding Pump For Hose) 3 7 4 5 RH Side of Tank 2 2 From Top of Booster or From Fill Valve 4 3 Beginning with S/N 5733 & Above 3 1 8 REPLACEMENT PARTS 00039 Figure 8 — Fill System
REPLACEMENT PARTS FILL SYSTEM Fig. 8 Item No. 1 2 3 4 5 6 7 8 Part No. 0502665 0501518 106090 107966 0509048 0508867 0501519 0509214 Description Hose, 1/2" I.D. Clear Braided (HTN, LT) .................................. Tie Wrap, Hose........................................................................... Bracket, Tie Wrap....................................................................... Nut, Grip, 10-32 w/Nylon Insert ................................................ Gasket, Inlet Chute..........
REPLACEMENT PARTS 00022 1 3 2 4 6 7 8 5 12 13 9 14 15 10 11 TO FILL ASSY 16 16 17 18 22 19 20 21 TO DETERGENT SUPPLY Figure 9 — Detergent Pump Assembly (optional) 32 22
REPLACEMENT PARTS DETERGENT PUMP ASSEMBLY (OPTIONAL) Fig. 9 Item No. Part No. Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 0503757 0308637 0308610 N/A 0501412 N/A 0501497 0504822 0501425 N/A N/A 108194 N/A N/A N/A 0501519 0502667 0502644 0503695 0306363 0501869 0501519 Motor, Pump............................................................................... Bracket, Detergent Pump (except LT)........................................ Bracket, Detergent/Sanitizer Pumps (LT) .....
REPLACEMENT PARTS 00002 1 3 2 5 6 7 8 4 15 9 10 DETERGENT PUMP (SEE FIG.
REPLACEMENT PARTS SANITIZER/(OPTIONAL) RINSE-AID PUMP ASSEMBLY LT Fig. 10 Item No. Part No. Description Qty 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0503756 0308610 0308697 0501412 0501497 0504822 0707142 0706635 0506589 0502666 0503694 0505483 0306363 0501869 0501519 Motor, Pump............................................................................... Bracket, Detergent/Rinse Pump (Optional)................................ Bracket, Sanitizer Pump......................................................
19 7 22 15 12 11 10 13 9 14 16 18 17 20 21 00033 REPLACEMENT PARTS L S 6 8 UP L2 T2 21 1 36 23 2 3 4 5 L1 T1 Figure 11 — Control Panel Assembly
REPLACEMENT PARTS CONTROL PANEL ASSEMBLY Fig. 11 Item No. *1 *1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20 21 22 23 - Part No. 0708538 0708590 0504956 0501379 0308644 0503701 111703 0508974 0509642 0501358 0509428 0501403 0501493 0501472 0501533 0503749 0310330 109069 113622 0508551 0501361 0501369 0509568 0509626 0501412 0309579 0504951 109064 106402 107289 0308967 0509645 107369 Description Timer assy (HT, HTN) (Includes items 2-5) ..............................
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ELECTRICAL SCHEMATICS ELECTRICAL SCHEMATICS 39
ELECTRICAL SCHEMATICS 00041 TO CUSTOMER DISCONNECT SWITCH CUSTOMER TO SUPPLY RATED VOLTAGE/PHASE/Hz, AS SPECIFIED PER ORDER, TO DISCONNECT SWITCH. ALL POWER SUPPLIED TO EACH CONNECTION POINT MUST COMPLY WITH ALL LOCAL ELECTRICAL CODES.
ELECTRICAL SCHEMATICS 00044 CUSTOMER TO SUPPLY RATED VOLTAGE/PHASE/Hz, AS SPECIFIED PER ORDER, TO DISCONNECT SWITCH. ALL POWER SUPPLIED TO EACH CONNECTION POINT MUST COMPLY WITH ALL LOCAL ELECTRICAL CODES.
ELECTRICAL SCHEMATICS 00045 TO CUSTOMER RECEPTACLE CUSTOMER TO SUPPLY RATED VOLTAGE/PHASE/Hz, AS SPECIFIED PER ORDER, TO DISCONNECT SWITCH. ALL POWER SUPPLIED TO EACH CONNECTION POINT MUST COMPLY WITH ALL LOCAL ELECTRICAL CODES.
ELECTRICAL SCHEMATICS 00048 5 TO CUSTOMER DISCONNECT SWITCH 1 230V 5 2 FUSE XFMR 115 VAC 3 GND 1 2 2 3 2 33 CT NO NC NC CTC 1 1 NO 31 29 28 1 BOOSTER TANK BHTR MSW 4 WTS 30 HLTS 31 NO 5 35 NC 33 NO 2 33 NC NO 4 NC 6 7 NO 8 Cam 1 8 NO Cam 8 NC PSDR 16 NO Cam 2 NC 8 4 17 25 40 9 25 L SRC S 12 26 9 NC NO 19 (If used) 3 20 Cam 4 41 BLU Start CW Start CCW 2 RED 4 5 BLK WHT Main TP GRN GND 3 D V GND NC 41 16 NO 115 VAC 3 DP 1 3 3 F
ELECTRICAL SCHEMATICS 00042 TIMING CHART 401-HT CAM TIME IN SECS 1 HOMING CAM 2 WASH PUMP FORWARD=WASH 3 WASH PUMP REVERSE=DRAIN WASH PUMP REVERSING CAM 4 DRAIN VALVE DRAIN PUMP 5 FILL VALVE 6 RINSE PUMP 7 DETERGENT PUMP 8 AUTO-FILL DRAIN 2 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 OPTIONAL N O SYNCHRON N C 0 COM.
TIMING CHARTS 00043 TIMING CHART 401-LT CAM TIME IN SECS 1 HOMING CAM 2 WASH PUMP FORWARD=WASH 3 WASH PUMP REVERSE=DRAIN WASH PUMP REVERSING CAM 4 DRAIN VALVE DRAIN PUMP 5 FILL VALVE 6 RINSE PUMP 7 SANITIZER PUMP 8 DETERGENT PUMP 9 AUTO-FILL DRAIN 2 10 20 30 40 50 60 70 80 90 100 110 N O 120 130 140 150 SYNCHRON N C 0 COM.