Moyer Diebel MH-60M2 Technical Manual
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Moyer Diebel MH-60M2 Technical Manual

Door-type dishwasher high/low temperature with/without built-in booster
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Simply Engineered Better
October, 1996
P. O. Box 4183
Winston-Salem, North Carolina 27115-4149
336/661-1992
Fax: 336/661-1660
Technical Manual
Door-Type
Dishwasher
Machine Serial No.
2674 N. Service Road
Jordan Station, Ontario, Canada LOR 1SO
905/562-4195
Moyer Diebel
Model
MH-60M2
High Temperature
with Built-in Booster
MH-6NM2
High Temperature
MH-6LM2
Low Temperature
0509506
P/N
Manual
Fax: 905/562-4618

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  • Page 1 336/661-1992 Fax: 336/661-1660 Technical Manual Door-Type Dishwasher Machine Serial No. Manual 2674 N. Service Road Jordan Station, Ontario, Canada LOR 1SO 905/562-4195 Moyer Diebel Model MH-60M2 High Temperature with Built-in Booster MH-6NM2 High Temperature MH-6LM2 Low Temperature 0509506 Fax: 905/562-4618...
  • Page 2 Note: When calling to order parts, be sure to have the model number, serial number, voltage and phase of your machine, along with your customer account number. Machine Data Plate with Machine Model & Serial Number located on the front panel. COPYRIGHT ©1996 by Moyer Diebel Serial Number Phone Phone...

  • Page 3: Revision History

    REVISONS Revision History Revision Revised Serial Number Comments Date Pages Effectivity 10/16/96 14165 Issue of manual and replacement parts lists...

  • Page 4: Table Of Contents

    Standard Equipment ... 6 Options ... 6 Electrical Power Requirements ... 7 INSTALLATION ... 8 Unpack the Dishwasher ... 8 To Change from Straight-through Operation to Corner Operation ... 9 Electrical Connections ... 10 Plumbing Connections ... 12 Water Connections ... 12 Drain Connections ...
  • Page 5 CONTENTS LIST OF FIGURES (cont.) Figure 9 – Drain Hose Connection ... 13 Figure 10 – Chemical Dispenser Signal Terminal Block ... 14 Figure 11 – Chemical Signal Connection Points ... 14 Figure 12 – Detergent Probe Injection Point, 1/2" NPT ... 15 Figure 13 –...

  • Page 6: Limited Warranty

    SW.] The warranty registration card must be returned to Champion/Moyer Diebel within ten (10) days after installation. If war- ranty card is not returned to Champion/Moyer Diebel within such period, the warranty will expire after one year from the date of shipment.

  • Page 7: Introduction

    For your protection, factory authorized parts should always be used for repairs. Replacement parts may be ordered directly from your Moyer Diebel authorized parts distributor or authorized service agency. ordering parts, please supply the model num- ber, serial number, voltage, and phase of your machine, the part number, part descriptions and quantity.

  • Page 8: Model Number

    GENERAL Model Numbers MH-60, MH-6N, MH-6L The MH-60 model is a high temperature (180°F/82°C rinse) sanitizing model with booster. The MH-6N model is a high temperature (180°F/82°C rinse) sanitizing model without booster. The MH-6L is a low temperature (Min. 120°F/ 49°C-140°F/60°C Optimum) sanitizing model for use with a sodium hypochlorite (Chlorine) based sanitizer at a minimum concentration of...

  • Page 9: Electrical Power Requirements

    Electrical Power Requirements Model Voltage MH-6N/MH-6L 115/60/1 MH-6N/MH-6L 208/60/1 MH-6N/MH-6L 220/60/1 MH-6N/MH-6L 230/60/1 MH-6N/MH-6L 240/60/1 MH-6N/MH-6L 208/60/3 MH-6N/MH-6L 220/60/3 MH-6N/MH-6L 230/60/3 MH-6N/MH-6L 240/60/3 MH-6N/MH-6L 380/60/3 MH-6N/MH-6L 415/60/3 MH-6N/MH-6L 480/60/3 MH-6N/MH-6L 575/60/3 MH-60 115/60/1 MH-60 208/60/1 MH-60 220/60/1 MH-60 230/60/1 MH-60 240/60/1 MH-60 208/60/3...

  • Page 10: Installation

    1. Immediately after unpacking the 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. Move the machine to its permanent location. NOTE: Refer to: To change from Straight-through...

  • Page 11: To Change From Straight-Through Operation To Corner Operation

    WALL POWER ON SWITCH FRONT Do not place the dishwasher closer than 5-1/4" (133mm) to any wall. Placement for Corner Operation Refer to Fig. 3a-3b and perform the steps below. 1. Remove the front rack guide (A). Discard the square spacers.

  • Page 12: Electrical Connections

    WARNING: Electrical and grounding connections must comply with all applicable Electrical Codes. WARNING: When working on the dishwasher, discon- nect the electric service and place a tag at the disconnect switch to indicate work is being done on that circuit.

  • Page 13: Figure 5 Hinged Control Panel

    The main terminal block is located on the side of the front right post of the dishwasher. (Cont.) Hinged Control Panel Figure 5 Electrical Power Connection...

  • Page 14: Plumbing Connections

    1. All MH series dishwashers require a single, hot water supply. The hot water connection to all MH series dishwashers is 3/4" NPT. The connection is made from underneath the dishwasher. The following minimum water temperatures are recommended: MH-60 with built-in 40° rise electric booster (Minimum 140°F/60°C) (Min./Max.

  • Page 15: Drain Connections

    1-1/2" O.D. hose connection point. 2. Drain height for all models must not exceed 11" (280mm) above floor level. 3. The drain connection is made to the dishwasher from underneath the machine through an access hole in the machine base. Ventilation...

  • Page 16: Chemical Connections

    INSTALLATION Chemical Connections NOTE: Consult a qualified chemical supplier for your chemical needs. Refer to Fig. 10 1. A chemical signal terminal block is supplied for chemical dispensing equipment. 2. The terminal block is located below the cycle timer on the left side of the hinged control panel.

  • Page 17: Figure 12 - Detergent Probe Injection Point, 1/2" Npt

    Chemical Connections (Cont.) Refer to Fig. 12 5. A 1/2" NPT detergent probe injection point is provided at the rear of the dishwasher. 6. Detergent may be added manually if your dishwasher is not equipped with dispensing equipment. Consult your chemical supplier for recommended amounts.

  • Page 18: Initial Start-Up

    INITIAL START-UP Complete the installation After plumbing and electrical connections are made, follow the steps below to complete the installation of your dishwasher. 1. Remove the white protective covering from the exterior of the machine. 2. Remove any foreign material from inside the machine.
  • Page 19 Check Wash Water Temperature The wash tank and booster tank heaters will begin to heat the water in the dishwasher. Wait approximately 10 minutes for the wash tank water to reach operating temperature. The temperature should be a minimum of 150°F/66°C for (MH-60, MH-6N).
  • Page 20 INITIAL START-UP INITIAL START-UP Fully close the dishwasher doors. The dishwasher will begin the automatic cycle. Opening the doors anytime during the cycle will stop the dishwasher. Closing the doors will resume the automatic cycle where it left off. The cycle times are listed below:...
  • Page 21 The final rinse water temperature gauge is located in the final rinse piping at the top of the dishwasher. The final rinse water tempera- ture should be a minimum of 180°F/82°C for (MH-60, MH-6N). The optimum final rinse temperature for (MH-60, MH-6N) is 180-195°F/82-91°C.
  • Page 22 Check all the plumbing for leaks. Also, check the drain plumbing for leaks and be sure that the drain will handle the drain water flow from the dishwasher. After the drain and the plumbing connections are checked, turn off the power to the dishwasher. Drain the dishwasher Make sure the dishwasher power switch is turned off.
  • Page 23 Be sure the drain-overflow rubber stopper is secure on the drain-overflow assembly. Remove the scrap screens and check the drain located in the bottom of the dishwasher wash tank. Make sure that the building drain handles the water flow exiting the dishwasher.

  • Page 24: Operation Summary

    Cups and bowls should be placed upside down in the flat rack. Silverware should be spread evenly in a single layer in the flat rack. 4. In cycle light illuminates as the dishwasher begins a 60 second automatic cycle. The cycle times are listed below:...

  • Page 25: Cleaning

    Intervals should be shortened whenever your machine is faced with abnormal working conditions, hard water, or multiple shift operations. CLEANING SCHEDULE Every 2 Hours or After Each Meal Period 1. Drain the dishwasher. 2. Flush interior with fresh water. 3. Clean scrap screens and pump intake screen. 4. Clean spray arm nozzles.

  • Page 26: Deliming Process

    DELIMING Your dishwasher should be delimed regularly depending on the mineral content of your water. Inspect the machine interior for mineral deposits and use a deliming solution for the best cleaning results. NOTE: Consult your chemical supplier for an appropriate deliming solution.

  • Page 27: Troubleshooting

    TROUBLESHOOTING Perform the seven checks listed below in the event that your dishwasher does not operate as expected. 1. All switches are ON 2. Drain-overflow assemby is in place and seated 3. Wash and rinse nozzles are clean 4. Wash and rinse pipe assemblies are installed correctly 5.
  • Page 28 TROUBLESHOOTING TROUBLESHOOTING CONDITION Insufficient pumped Clogged pump intake screen ... spray pressure Clogged spray pipe ... Scrap screen full ... Low water level in tank ... Pump motor rotation incorrect ... Defective pump seal ... Insufficient final rinse Faulty pressure reducing valve ... or no final rinse Improper setting on pressure ...

  • Page 29: Basic Service

    Troubleshooting Schematics Moyer Diebel places an electrical schematic in the control cabinet of every machine before it is shipped. Schematics are included at the back of this manual as well. Be aware that these schemat- ics include options that may not apply to your machine. Options are enclosed in dashed lines with the words (IF USED) next to them on the schematic.

  • Page 30: Figure 14 - Fuses

    Booster heater circuits (MH-60 only) are not fused. To Replace a fuse: Turn the dishwasher main power switch off. Disconnect power to the machine at the main servicedisconnect switch. Replace the fuse. If the fuse blows again, DO NOT INCREASE THE FUSE SIZE.

  • Page 31: Figure 16 Cycle Timer

    START Fill Timer — Refer to Fig. 18. The fill timer controls the dishwasher’s 90-second fill operation. The timer consists of a timer motor, one micro-switch, and one non-adjustable plastic cam. The fill timer operates during initial fill. FILL TIMER TIMER CYCLE 60-SEC.

  • Page 32: Figure 19 Heater Element Wiring

    BASIC SERVICE ELECTRICAL SERVICE (Cont.) Heater Element Wiring – Booster Tank and Wash Tank Heater Elements Refer to the illustrations and follow the steps below to properly install terminal jumpers and to make line power connections to a replacement element. Step 1.

  • Page 33: Motor Connections

    ELECTRICAL SERVICE (Cont.) Motor Connections — 1. Models MH-60, MH-6N, and MH-6L are available in either single phase or 3 phase voltages. 2. Motor rotation was set at the factory. For three phase machines, reversing the motor direction is done in the control cabinet by reversing the wires L1 and L2 on the disconnect side of the main electrical connection block.

  • Page 34: Mechanical Service

    16. Reinstall spacers, impeller, and new flange gasket. Reinstall bolts. 17. Reinstall the pump/motor assembly and reconnect the pump hoses. 18. Fill the dishwasher with water. 19. Check motor rotation by bump starting motor. Correct motor shaft rotation is clockwise when viewing motor from the rear.

  • Page 35: Replacement Parts

    REPLACEMENT PARTS REPLACEMENT PARTS...
  • Page 36 REPLACEMENT PARTS Figure 22 - Door Assemblies and Panels...

  • Page 37: Figure 22 - Door Assemblies And Panels

    DOOR ASSEMBLIES AND PANELS Fig. 22 Part Item No. 0309167 Lift bar, door ... 0509274 Nut, acorn (5/16-18 SST) ... 104002 Bolt (5/16-18 X 1-1/2) ... 0509264 Bushing, side door ... 0709405 Door, side ... 0501412 Screw (10-32 X 3/8 Truss hd) ... 0308704 Guard, splash ...
  • Page 38 REPLACEMENT PARTS Figure 23 - Door Safety Switch and Instrument Panel...

  • Page 39: Figure 23 - Door Safety Switch And Instrument Panel

    DOOR SAFETY SWITCH AND Fig. 23 Part Item No. 0509199 Switch, door ... 0309451 Bracket, switch ... 107967 Nut, grip (1/4-20 with nylon insert) ... 0501361 On-Off switch ... 0501338 Lite, red (240V) ... 0503765 Lite, amber (240V) ... 0501361 Switch (Extended Wash) ...
  • Page 40 REPLACEMENT PARTS Figure 24 - Door Handle Assembly and Springs...

  • Page 41: Figure 24 - Door Handle Assembly And Springs

    DOOR HANDLE ASSEMBLY AND SPRINGS Fig. 24 Part Item No. 107397 Block, spring hook ... 108066 Spring, extension ... 0509168 Bolt, extension spring (5/16-18 X 11 Hex hd) ... 100154 Nut, plain (5/16-18) ... 102376 Washer (5/16 X 3/4 X 1/16) ... 106013 Washer, Lock (5/16 split) ...
  • Page 42 REPLACEMENT PARTS Figure 25 - Track Assembly (Corner configuration shown)

  • Page 43: Figure 25 - Track Assembly

    Fig. 25 Part Item No. 0309469 Guide ... 0309468 Guide ... 0309472 Track, rear ... 0309470 Support, rack ... 0309471 Track, front ... 106727 Screw (10-32 X 5/8 Flat Hd) ... 107966 Nut, grip (10-32 w/ nylon insert) ... 100779 Bolt (1/4-20 X 5/8 Truss Hd) ...

  • Page 44: Figure 26 - Mh-60 Fill Piping Assembly

    Model MH-60 Figure 26 - MH-60 Fill Piping Assembly...

  • Page 45: Fill Piping Assembly

    Fig. 26 Part Item No. 102444 Elbow, street (3/4 X 90°) ... 100184 Nipple, close (3/4") ... 104429 Breaker, vacuum (3/4" Brass) ... 108351 Repair kit, vacuum breaker (3/4") ... 100171 Reducer, bushing face (3/4 X 1/2) ... 0309426 Bracket, plumbing ... 0502651 Barb, hose (1/2") ...
  • Page 46 Model MH-6N MH-6L Figure 27 - MH-6N, MH-6L - Fill Piping Assembly...

  • Page 47: Figure 27 - Mh-6N, Mh-6L Fill Piping Assembly

    FILL PIPING ASSEMBLY Fig. 27 Part Item No. 102444 Elbow, street (3/4 X 90°) ... 100184 Nipple, close (3/4") ... 104429 Breaker, vacuum (3/4" Brass) ... 108351 Repair kit, vacuum breaker (3/4") ... 100171 Reducer, bushing face (3/4 X 1/2) ... 0309426 Bracket, plumbing ...
  • Page 48 REPLACEMENT PARTS Figure 28 - Wash/Rinse Spray Arm Assembly...

  • Page 49: Figure 28 - Wash/Rinse Spray Arm Assembly

    WASH/RINSE SPRAY ARM ASSEMBLY Fig. 28 Part Item No. 0507443 Spindle, rinse arm ... 0508376 Nozzle, rinse arm (MH-60, MH-6N Only) ... 112164 Bearing, rinse arm ... 0707453 Rinse arm assy (includes Items 2-3) (MH-60, MH-6N Only) ... 0507444 Nut, rinse arm ... 0501563 Screw (#8 X 1/2 Pan hd) ...

  • Page 50: Figure 29 - Wash/Rinse Spray Piping Assembly

    REPLACEMENT PARTS 12 11 Figure 29 - MH-60, MH-6N, MH-6L Wash/Rinse Spray Piping Assembly...
  • Page 51 MH-60, MH-6N, MH-6L WASH/RINSE SPRAY PIPING ASSEMBLY Fig. 29 Part Item No. 108418 Plug (1/2") ... 108417 Nut, plug ... 109034 Washer, fiber (13/16 X 1-1/16) ... 107417 Hose (1/2" O.D.) ... 6 ft. 0309445 Rinse tube, top (5/8") ... 0509180 Fitting, straight compression (5/8 X 1/2 MPT) ...
  • Page 52 REPLACEMENT PARTS Figure 30- Scrap Screens and Drain Assembly...

  • Page 53: Figure 30 - Scrap Screens And Drain Assembly

    SCRAP SCREENS AND DRAIN ASSEMBLY Fig. 30 Part Item No. 0709196 Assembly, drain overflow ... 0509198 Stopper, drain overflow assembly ... 305164 Screen, scrap ... 0309192 Cover, drain ... 0302565 Assembly, drain ... 107966 Nut, grip (10-32 with nylon insert) ... 308005 Strainer ...
  • Page 54 REPLACEMENT PARTS Figure 31 - Pump Assembly...

  • Page 55: Figure 31 - Pump Assembly

    Fig. 31 Part Item No. 107340 Clamp hose ... 0509351 Hose, discharge ... 0508515 Hose, suction ... 105986 Clamp, hose ... 100739 Bolt (5/16-18 X 3/4 Hex hd) ... 102376 Washer, flat (5/16) ... 106013 Washer, lock (5/16 split) ... 100154 Nut, plain (5/16-18) ...
  • Page 56 REPLACEMENT PARTS Figure 32 - Wash Tank Heater and Thermostats...

  • Page 57: Figure 32 - Wash Tank Heater And Thermostats

    WASH TANK HEATER AND THERMOSTATS Fig. 32 Part Item No. 0509185 Element, wash tank heater (3 KW, 208-240V, 1-3 PH) ... Element, wash tank heater (3 KW, 115/208-240V, 1 PH) ... 108391 Thermometer (48") ... 0508872 Adaptor, thermometer ... 201029 Nut, lock (1/2"...

  • Page 58: Figure 33 - Mh-60 Only Electric Booster Assembly

    REPLACEMENT PARTS Figure 33 - MH-60 Only Electric Booster Assembly...
  • Page 59 ELECTRIC BOOSTER ASSEMBLY Fig. 33 Part Item No. 0509042 Tank, booster ... 110562 Thermostat, high limit (fixed, snap) ... 110563 Compound, heat sink ... 108954 Nut, grip (6-32 with nylon insert) ... 100210 Plug 1/8 (SST) ... 100154 Nut, plain (5/16-18) ... 106013 Washer, lock (5/16 split) ...
  • Page 60 REPLACEMENT PARTS Figure 34- Control Cabinet...

  • Page 61: Figure 34 - Control Cabinet

    Fig. 34 Part Item No. 0501412 Screw (10-32 X 3/8 Truss hd) ... 0501500 Washer, lock ... 0709482 Panel, control (sheet metal only) ... 111632 Overload, motor-1.4 HP Wash (115V/1PH) ... 111630 Overload, motor-1.4 HP Wash (208-240V/1PH) ... 111628 Overload, motor-1.4 HP Wash (208-240V/3PH) ... 111627 Overload, motor-1.4 HP Wash (380-415V/3PH) ...

  • Page 62: Figure 35 - Dishracks

    REPLACEMENT PARTS Figure 35 - Dishracks...
  • Page 63 Fig. 35 Part Item No. 101273 Rack, (Flat Bottom) ... 101285 Rack, (Peg) ... DISHRACKS Part Description REPLACEMENT PARTS Qty.

  • Page 64: Electrical Schematics

    REPLACEMENT PARTS ELECTRICAL SCHEMATICS A0509519/A Figure 36 MH-60, MH-6N, MH-6L Three Phase Electrical Schematic...

  • Page 65: Figure 37 - Single Phase Electrical Schematic

    REPLACEMENT PARTS ELECTRICAL SCHEMATICS A0509520/A Figure 37 MH-60, MH-6N, MH-6L Single Phase Electrical Schematic...

  • Page 66: Timer Chart

    REPLACEMENT PARTS TIMER CHART Figure 38 MH-60, MH-6N, MH-6L Cycle Timer Chart...

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