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Moyer Diebel MH-60M5 Technical Manual

Door-type dishwasher high/low temperature with/without built-in booster
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For machines beginning with
serial no. D3694 and above
March, 2004
P. O. Box 4183
Winston-Salem, North Carolina 27115-4183
336/661-1992
Fax: 336/661-1660
Technical Manual
Door-Type
Dishwasher
Machine Serial No.
Manual
2674 N. Service Road
Jordan Station, Ontario, Canada L0R 1S0
905/562-4195
Moyer Diebel
Model
MH-60M5
High Temperature
with Built-in Booster
MH-6NM5
High Temperature
MH-6LM5
Low Temperature
113494
P/N
Rev E
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 L0R 1S0 905/562-4195 Moyer Diebel Model MH-60M5 High Temperature with Built-in Booster MH-6NM5 High Temperature MH-6LM5 Low Temperature 113494 Rev E...
  • Page 2 Machine Data Plate with Machine Model & Serial Number located on the front panel. COPYRIGHT © 2004 by Moyer Diebel Serial Number Phone Phone Moyer Diebel, Limited Phone:...

  • Page 3: Revision History

    Revision History Revision Revised Serial Number Date Pages 07/01/02 10/18/02 10/18/02 13, 17, 24 10/18/02 42,43 10/18/02 10/18/02 53, 56 10/24/02 12/18/02 2/5/03 47, 61 2/5/03 7/22/03 7/22/03 53,57 7/22/03 2/3/04 50-51 2/3/04 Comments Effectivity D3694 Issue of New Service Manual and replacement parts list D3858 Revised rated amps listing...

  • Page 4: Table Of Contents

    Model Number ... 6 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 ...13...
  • Page 5 CONTENTS LIST OF FIGURES (cont.) Figure 11 – Rinse Aid and Sanitizer Injection Points ... 15 Figure 12 – Fuses ... 28 Figure 13 – Motor Overload ... 28 Figure 14 – Solid State Control Board ... 29 Figure 15 – Float Switch ... 29 Figure 16 –...
  • Page 6 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 7: Limited Warranty

    Champion Industries/Moyer Diebel Limited warrants all new machines of its manufacture bearing the name “Champion” or "Moyer Diebel" and installed within the United States and Canada to be free from defects in material and workmanship for a period of one (1) year after the date of installation or fifteen (15) months after the date of shipment by Champion/Moyer Diebel, whichever occurs first.
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  • Page 9: Introduction

    INTRODUCTION Welcome to Moyer Diebel...and thank you for allowing us to take care of your dishwashing needs. This manual covers the door-type dishwasher, Models MH-60, MH-6N, MH-6L. Your machine was completely assembled, inspected, and thoroughly tested at our factory before it was shipped to your installation site.

  • Page 10: Model Number

    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 50 PPM in the final rinse.

  • Page 11: Electrical Power Requirements

    Electrical Power Requirements: Fig Electric Heat/Electric Booster Model Voltage Booster Rise (MH-60 Only) 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 —...

  • Page 12: To Change From Straight-Through Operation To Corner Operation

    Changing Operation – Straight-through to Corner Your door-type dishwasher was specified to the factory as a straight-through configuration or as a corner configuration. Your machine can be converted from straight-through to corner or from corner to straight-through. Contact the factory for instructions on changing the operation of your dishwasher.

  • Page 13: Electrical Connections

    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. 1. A qualified electrician must compare the...

  • Page 14: Figure 3 Hinged Control Panel

    The main terminal block is located on the side of the front right post of the dishwasher. Figure 3 Hinged Control Panel Electrical Power Connection Figure 4...

  • Page 15: Plumbing Connections

    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 16: Drain Connections

    15 gallons/min-56.8 liters/min. 3. Drain height for all models must not exceed 11" (280mm) above floor level. 4. The drain connection is made to the dishwasher from underneath the machine through an access hole in the machine base. Ventilation NOTE: Ventilation must comply with local sanitary and plumbing codes.

  • Page 17: Chemical Connections

    INSTALLATION (Cont.) Chemical Connections NOTE: Consult a qualified chemical supplier for your chemical needs. Refer to Fig. 8 1. A chemical signal terminal block is supplied for chemical dispensing equipment. 2. The terminal block is located below the control panel fuse block. Refer to Fig.
  • Page 18 5. A 1/2" detergent probe injection point is provided at the rear and left side 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 19: 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 20: Water Temperature

    THE DISHWASHER FILLS AUTOMATICALLY. NOTE: The dishwasher will fill automatically each time the power is turned off even if the dishwasher is full of water. Note that the power indicator light is illuminated. Check Wash Water Temperature The wash tank heater and the (booster tank heater, MH-60 only) will begin to heat the water in the dishwasher.
  • Page 21 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 22: Water Pressure

    The final rinse water temperature gauge is located in the final rinse piping at the top of the dishwasher. The final rinse water temperature 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 23 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 (15 gal/min-56.8 liters/min) from the dishwasher. After the drain and the plumbing connections are checked, turn off the dishwasher power switch. Drain the dishwasher Make sure the dishwasher power switch is turned off.
  • Page 24 Be sure the drain-overflow seal 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 25: Operation Summary

    8. Open the doors. Remove the clean rack. Insert another rack of soiled ware. Fully close the doors. 9. Turn power OFF at the dishwasher. Remove the drain-overflow assembly. Clean the scrap screens. Clean the dishwasher after each meal period or every two hours of operation.

  • Page 26: Cleaning

    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 27: 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 28: 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 29 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 30: 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 schematics 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 31: Motor Overloads

    (MH-60 only) are not fused. A 2 pole fuse block is located on the machine base to protect the control circuit. To Replace a fuse: Turn the dishwasher main power switch off. Disconnect power to the machine at Figure 12 the main service disconnect switch.

  • Page 32: Automatic Operation

    Solid State MH60/MH6N/MH6L Operating Instructions Automatic Operation 1. Check that drain is closed and screens are clean and in place. 2. Turn on main power to the machine. 3. Flip machine control panel power switch to ON. 4. Close doors. •...
  • Page 33 Troubleshooting Timer Circuit Board (cont.) Power Terminals • Verify that the board is receiving power of 120 VAC at the terminals: – T2, marked “H” (AC Hot). – T1, marked “N” (AC Neutral). If either of these terminals is not receiving 120 VAC, then there is a problem elsewhere with the unit not receiving power.
  • Page 34 1.4 Testing Board Outputs After you have verified that the circuit board is receiving power (as explained above), then test the board outputs. There are 4 board outputs: • Wash Cycle. • Rinse Cycle. • Heaters. • In-Cycle Lamp. Perform the following steps to test a board output: 1.
  • Page 35 For Model MH-60 only, the built-in booster heat circuit is also controlled by the float switch. Operation: 1. When dishwasher main power switch is turned on (wash tank empty), the drain valve closes allowing cycle time to run for a minimum of 110 sec- onds to fill the tank.
  • Page 36 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. Hold the element assembly with the calrod coils facing toward you. Step 2.

  • Page 37: 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 38: Pump Seal Replacement

    16. Reinstall impeller, and new flange gasket. Reinstall bolts. Reinstall drain plug. 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 39: Replacement Parts

    REPLACEMENT PARTS REPLACEMENT PARTS...
  • Page 40 REPLACEMENT PARTS Figure 20 - MH-60/6N/6L Doors and Panels...
  • Page 41 Fig. 20 Part Item No. 325405 Side Door ... 327131 Front Door ... 321929 RH Panel, No Cut Out ... 321930 Panel, Instrument... 112389 Decal, Control Panel ... 322074 Panel, Front Lower ... 321941 LH Panel w/Cut Out ... 108418 Plug Plastic ...
  • Page 42 REPLACEMENT PARTS FRONT OF HOOD Figure 21 - MH-60/6N/6L Door Guides, Stops, and Lift Bracket...
  • Page 43 DOOR GUIDES, STOPS, AND LIFT BRACKET Fig. 21 Part Item No. 108053 Plug, Cornerpost ... 107966 Nut, Grip 10-32 w/Insert ... 327104 Bracket, Door Lift ... 100007 Screw 10-32 x 3/8" Truss Head ... 327103 Door Lift Bracket... 100097 Scew 10-32 x 1/2" Truss Head ... 108347 Guide, Door ...
  • Page 44 REPLACEMENT PARTS Figure 22 - MH-60/6N/6L Door Handle, Spring Assembly, and Safety Switch...
  • Page 45 DOOR HANDLE, SPRING ASSEMBLY, AND SAFETY SWITCH Fig. 22 Part Item No. 112723 Bolt 5/16-18 x 15 Hex Head ... 108066 Spring, Extension... 107397 Block, Spring Hook ... 0509166 Door Handle... 107437 Bolt M6 x 45MM Hex Head ... 107396 Block, Upper Pivot...
  • Page 46 Figure 23A – MH-60/6N/6L Straight Track Assembly Figure 23B – MH-60/6N/6L Corner Track Assembly...
  • Page 47 STRAIGHT TRACK ASSEMBLY Fig. 23A Part Item No. 0309472 Track, Rear... 100073 Screw 1/4 -20 x 1/2 Truss Hd ... 106482 Washer, Lock ... 100003 Nut (1/4-20 Hex Hd) ... CORNER TRACK ASSEMBLY Fig. 23B Part Item No. 0309469 Guide, Right Hand ... 0309472 Track, Rear...
  • Page 48 REPLACEMENT PARTS Figure 24 - MH-60/6N/6L Wash/Rinse Spray Piping...
  • Page 49 WASH/RINSE SPRAY PIPING Fig. 24 Part Item No. 324526 Rinse Manifold Weldment ... 113027 Connector, Rinse Arm ... 113028 Top Rinse Arm Connector ... 0507445 Spindle, Wash Arm ... 109864 Support, Wash Arm ... 109781 Standpipe, Wash... 100736 Bolt 1/4-20 x 3/4 Hex Head... 107967 Nut, Grip 1/4-20...
  • Page 50 REPLACEMENT PARTS AFTER S/N D3858 PRIOR TO S/N D3857 Figure 25 - MH-60/6N/6L Wash/Rinse Spray Arms...
  • Page 51 WASH/RINSE SPRAY ARMS Fig. 25 Part Item No. 0507443 Spindle, Rinse Arm ... 0508376 Nozzle, Rinse Arm (MH-60, MH-6N Only) (Prior to S/N D3857) .. 113514 Bearing, Rinse Arm (Replaces 112164) ... 414111 Rinse Arm Assy. (Complete) (MH-60, MH-6N Prior to S/N D3857) 414110 Rinse Arm Assy.
  • Page 52 REPLACEMENT PARTS Figure 26 - MH-60/6N/6L Drain Assembly and Scrap Screens...
  • Page 53 DRAIN ASSEMBLY AND SCRAP SCREENS Fig. 26 Part Item No. 112393 Knob, Drain Lift ... 112394 Rod Assy., Drain Lift ... 112392 Guide, Drain Lift ... 100097 SCREW (10-32 x 1/2" Truss Hd) ... 322159 Retainer, Overflow ... 321939 Filler, Drain Plate (Retained By Spring Clip) ... 322120 Filler, Drain Plate (Retained By Stud and Nut) (Not Shown)...
  • Page 54 REPLACEMENT PARTS Figure 27 - MH-60/6N/6L Wash Tank Heat and Thermostats...
  • Page 55 WASH TANK HEAT AND THERMOSTATS Fig. 27 Part Item No. 113622 Thermometer 4 Ft. Gas Filled (Replaces 108391) ... 109069 Thermostat W/Cap 110-220°F... 201041 Washer ... 201029 Nut, Lock 1/2" ... 322076 Dual Thermostat Bracket ... 110561 Thermostat, Fixed High Limit ... 106482 Washer, Lock 1/4 Split SST ...
  • Page 56 REPLACEMENT PARTS Figure 28- MH-60 Only Electric Booster and Thermostats...
  • Page 57 ELECTRIC BOOSTER AND THERMOSTATS Fig. 28 Part Item No. 100740 Bolt 5/16-18 x 1 Hex Head ... 102376 Washer, Flat 5/16 x 3/4 x 1/16... 108954 Nut, Grip 6-32 W/Insert... 113604 Thermostat, High Limit ... 110563 Compound, Heat Sink ... A/R 109069 Thermostat, Booster...
  • Page 58 REPLACEMENT PARTS TO UPPER PIPING CUSTOMER WATER INLET Figure 29 - MH-60 Only Lower Fill Piping Assembly...
  • Page 59 LOWER FILL PIPING ASSEMBLY Fig. 29 Part Item No. 107550 Valve, Pressure Reducing 3/4"... 102444 Street Ell 3/4" NPT Brass ... 102651 Nipple 3/4" x 2" Brass ... 111437 Valve 3/4" NPT Hot Water... 100184 Nipple 3/4" NPT ... 102525 Tee 3/4"...
  • Page 60 REPLACEMENT PARTS WATER IN FROM LOWER PIPING Figure 30 - MH-60/6N Only Upper Fill Piping Assembly...
  • Page 61 UPPER FILL PIPING ASSEMBLY Fig. 30 Part Item No. 100156 Locknut 3/4" NPT Brass... 100571 Union, 3/4" NPT Brass... 102392 Bushing, Reducing 3/4" x 1/2" NPT Brass (Prior to S/N D3699)... 100171 Bush Red Face 3/4" x 1/2" Brass (After S/N D3700) ... 100599 Cross, 3/4"...
  • Page 62 REPLACEMENT PARTS TO UPPER PIPING CUSTOMER WATER IN Figure 31 - MH-6N/6L Only Lower Fill Piping Assembly...
  • Page 63 LOWER FILL PIPING ASSEMBLY Fig. 31 Part Item No. 102444 Elbow, Street 3/4" NPT Brass ... 0309340 Plumbing, Support Bracket ... 110768 Line Strainer 3/4" Brass... 111437 Valve, 3/4" NPT ... 100184 Nipple, Close 3/4" NPT Brass ... 102525 Tee 3/4" x 1/2" x 3/4" NPT Brass ... 102392 Bushing, Reducing 3/4"...
  • Page 64 WATER IN FROM LOWER PIPING Figure 32 - MH-6L Only Upper Fill Piping Assembly...
  • Page 65 UPPER FILL PIPING ASSEMBLY Fig. 32 Part Item No. 100548 Locknut 3/4" NPT SST ... 100571 Union, 3/4" NPT Brass ... 102392 Bushing, Reducing 3/4 NPT x 1/2" NPT Brass 100171 Bush Red Face 3/4" x 1/2" Brass (After S/N D3700) ... 100599 Cross 3/4"...
  • Page 66 REPLACEMENT PARTS Figure 33 - MH-60/6N/6L Pump Assembly...
  • Page 67 Fig. 33 Part Item No. 324580 Strainer ... 107966 Nut, Grip 10-32 w/Nylon Insert ... 104203 Clamp, Hose... 104165 Clamp, Hose... 107340 Clamp, Hose... 112383 Hose Pump, Discharge... 109562 Hose, Suction ... 100734 Bolt 1/4-20 x 1/2" Hex Head ... 106482 Washer, Lock 1/4"...
  • Page 68 REPLACEMENT PARTS POWER EXTENDED WASH CYCLE WASH RINSE PRESSURE Figure 34 - MH-60/6N/6L Control Panel and Gauges...
  • Page 69 CONTROL PANEL AND GAUGES Fig. 34 Part Item No. 0501361 Switch, On-Off... 112390 Lite, Red (Power) ... 112391 Lite, Amber (In-Cycle) ... 0501361 Switch, Extended Wash ... 113622 Thermometer, 4 Ft Gas Filled (Replaces 108391) ... 113662 Overlay, Wash 150°F (MH-60/6N) ... 112093 Overlay, Wash 120°F (MH-6L Only)...
  • Page 70 REPLACEMENT PARTS Figure 35 - MH-60/6N/6L Control Cabinet...
  • Page 71 Fig. 35 Part Item No. 900911 Kit* DM Board & Instructions (Prior to S/N D3857)... 113597 Timer Board (MH-60, MH-6N only) (After S/N D3858) ... 106925 Block, Fuse (30A, 3 Pole) ... 100922 Fuse, 20A (MH60) 208-240V/3 ... 100913 Fuse, 10A (ALL) 480V/3 ... 100913 Fuse, 10A (ALL) 380-415V/3 ...
  • Page 72 REPLACEMENT PARTS Figure 36 - Dishracks and PRV...
  • Page 73 Fig. 36 Part Item No. 101273 Rack (Flat Bottom) ... 101285 Rack (Peg) ... 112387 Line Strainer/PRV Combo ... DISHRACKS AND PRV Part Description Qty.
  • Page 74 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 75: Electrical Schematics

    ELECTRICAL SCHEMATICS...
  • Page 76 NOTE 1: IF SUPPLY IS 115V, T1 IS NOT USED. WIRES #1 AND 2 ARE CONNECTED TO THE FUSE BLAOCK IN PLACE OF #39 AND NOTE 2: USED ON MACHINES WITH INDEPENDENT FRONT L1 L2 L3 DOOR OPTION. ON SINGLE PHASE ! ATTENTION - VERY IMPORTANT ! - MACHINES OMIT L3.

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