Moyer Diebel MH-60M3 Technical Manual
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Moyer Diebel MH-60M3 Technical Manual

Door-type dishwasher high/low temperature with/without built-in booster
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Simply Engineered Better
February, 1998
P. O. Box 4183
Winston-Salem, North Carolina 27115-4183
336/661-1992
Fax: 336/661-1660
Technical Manual
For machines beginning with serial no. 89519 and above
Moyer Diebel
This manual supersedes
P/N 112425, dated April, 1997.
Remove and destroy previous edition.
Door-Type
Dishwasher
Machine Serial No.
P/N
Manual
2674 N. Service Road
Jordan Station, Ontario, Canada LOR 1SO
905/562-4195
Model
MH-60M3
High Temperature
with Built-in Booster
MH-6NM3
High Temperature
MH-6LM3
Low Temperature
112425
REV. B
Fax: 905/562-4618

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  • Page 1 Remove and destroy previous edition. 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-60M3 High Temperature with Built-in Booster MH-6NM3 High Temperature MH-6LM3 Low Temperature 112425 REV.
  • 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 ©1998 by Moyer Diebel Serial Number Phone Phone Moyer Diebel, Limited Phone:...

  • Page 3: Revision History

    Revision History Revision Revised Date Pages 4/27/97 — 1/30/98 7/1/98 Serial Number Effectivity 89519 MH-M3 control circuit is 120VAC MH-M2 series was 220VAC 89519 Reissue of manual and replacement parts lists This manual replaces temporary manual issued 4/5/97 — Corrected P/N’s for fuses Comments...

  • 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 Points, 1/2" ... 15 Figure 13 –...

  • Page 6: 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.

  • 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. When 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:Fig Electric Heat/Electric Booster 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...

  • 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 FRONT POWER ON SWITCH 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.) Electrical Power Connection Main Terminal Block Figure 5...

  • 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

    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 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 control panel fuse block. Refer to Fig.

  • Page 17: Figure 12 - Detergent Probe Injection Points, 1/2

    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 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 Push the On/Off power switch to the UP position. 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.
  • 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 (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 23 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 24: 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 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: Motor Overloads

    To Replace a fuse: Turn the dishwasher main power switch off. Disconnect power to the machine at the main service disconnect switch. Replace the fuse. If the fuse blows again, DO NOT INCREASE THE FUSE SIZE.

  • Page 31: Figure 16 Cycle Timer

    The timer consists of a timer motor, one micro-switch, and one non-adjustable plastic cam. The fill timer operates during initial fill. The fill timer also operates if main power is turned off and then turned back on even if the dishwasher is full of water. FILL TIMER TIMER MOTOR...

  • 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 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 35: Replacement Parts

    REPLACEMENT PARTS REPLACEMENT PARTS...

  • Page 36: Figure 22 - Doors And Panels

    REPLACEMENT PARTS Figure 22 - MH-60/6N/6L Doors and Panels...
  • Page 37 Fig. 22 Part Item No. 0709405 DOOR, SIDE ... 0709317 FRONT DOOR, DOOR MACH ... 321929 RH PANEL NO CUT OUT ... 321930 PANEL,INSTRUMENT ... 112388 DECAL, CONTROL PANEL ... 322074 PANEL, FRONT LOWER ... 321941 LH PANEL W/CUTOUT ... 108418 PLUG PLASTIC ...
  • Page 38 REPLACEMENT PARTS Figure 23 - MH-60/6N/6L Door Guides, Stops, and Lift Bracket...

  • Page 39: Figure 23 - Door Guides, Stops And Lift Bracket

    DOOR GUIDES, STOPS, AND LIFT BRACKET Fig. 23 Part Item No. 108053 PLUG, CORNERPOST ... 107966 NUT, GRIP 10-32 W/INSERT ... 0309277 BRACKET, DOOR LIFT ... 100097 SCREW 10-32 X 1/2" TRUSS HEAD ... 108347 GUIDE, DOOR ... 108410 GASKET, DOOR GUIDE (26") ... 107970 SCREW 8-32 X 1 FILISTER ...
  • Page 40 REPLACEMENT PARTS Figure 24 - MH-60/6N/6L Door Handle, Spring Assembly, and Safety Switch...

  • Page 41: Figure 24 - Door Handle, Spring Assembly And Safety Switch

    DOOR HANDLE, SPRING ASSEMBLY, AND SAFETY SWITCH Fig. 24 Part Item No. 0509168 BOLT 5/16-18 X 11 HEX HEAD ... 108066 SPRING, EXTENSION ... 107397 BLOCK, SPRING HOOK ... 0509166 DOOR HANDLE ... 107437 BOLT M6 X 45MM HEX HEAD ... 107396 BLOCK, UPPER PIVOT ...

  • Page 42: Figure 25 - Track Assembly

    REPLACEMENT PARTS Figure 25 - MH-60/6N/6L Track Assembly (Corner configuration shown)
  • Page 43 Fig. 25 Part Item No. 0309469 GUIDE, RIGHT HAND ... 0309472 TRACK, REAR ... 0309468 GUIDE, LEFT HAND ... 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 REPLACEMENT PARTS Figure 26 - MH-60/6N/6L Wash/Rinse Spray Piping...

  • Page 45: Figure 26 - Wash/Rinse Spray Piping

    WASH/RINSE SPRAY PIPING Fig. 26 Part Item No. 0309444 RINSE TUBE ... 0509181 FITTING, STRAIGHT COMPRESSION ... 0509150 CONNECTOR, TOP RINSE... 0509180 FITTING, STRAIGHT COMPRESSION ... 0309445 RINSE TUBE, TOP ... 0509179 FITTING, BULKHEAD 1/2"NPT ... 0507445 SPINDLE, WASH ARM ... 109864 SUPPORT, WASH ARM...

  • Page 46: Figure 27 - Wash/Rinse Spray Arms

    REPLACEMENT PARTS Figure 27 - MH-60/6N/6L Wash/Rinse Spray Arms...
  • Page 47 WASH/RINSE SPRAY ARMS Fig. 27 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 2 & 3) ... 0507444 NUT, RINSE ARM ... 109835 SCREW (#8 X 1/2 PAN HD) ...
  • Page 48 REPLACEMENT PARTS Figure 28 - MH-60/6N/6L Drain Assembly and Scrap Screens...

  • Page 49: Figure 28 - Drain Assembly And Scrap Screens

    DRAIN ASSEMBLY AND SCRAP SCREENS Fig. 28 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) 100194...
  • Page 50 REPLACEMENT PARTS Figure 29 - MH-60/6N/6L Wash Tank Heat and Thermostats...

  • Page 51: Figure 29 - Wash Tank Heat And Thermostats

    WASH TANK HEAT AND THERMOSTATS Fig. 29 Part Item No. 108391 THERMOMETER 4 FT..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 52: Figure 30 - Electric Booster And Thermostats (Mh-60 Only)

    REPLACEMENT PARTS Figure 30- MH-60 Only Electric Booster and Thermostats...

  • Page 53: Electric Booster And Thermostats

    ELECTRIC BOOSTER AND THERMOSTATS Fig. 30 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 ... 110562 THERMOSTAT, HIGH LIMIT ... 110563 COMPOUND, HEAT SINK ... 109069 THERMOSTAT, BOOSTER ...

  • Page 54: Figure 31 - Lower Fill Piping Assembly (Mh-60 Only)

    REPLACEMENT PARTS TO UPPER PIPING CUSTOMER WATER INLET Figure 31 - MH-60 Only Lower Fill Piping Assembly...
  • Page 55 LOWER FILL PIPING ASSEMBLY Fig. 31 Part Item No. 112387 LINE STRAINER/PRV COMBO ... 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 56: Figure 32 - Upper Fill Piping Assembly (Mh-60/6N Only)

    REPLACEMENT PARTS Figure 32 - MH-60/6N Only Upper Fill Piping Assembly WATER IN FROM LOWER PIPING...
  • Page 57 UPPER FILL PIPING ASSEMBLY Fig. 32 Part Item No. 102438 ELBOW STREET, 1/2" NPT X 90° BRASS ... 102567 NIPPLE, 1/2" NPT X 3" BRASS ... 102392 BUSHING, REDUCER 3/4" NPT X 1/2" NPT BRASS ... 100599 CROSS 3/4" NPT BRASS ... 108181 BUSHING, REDUCER 3/4"...

  • Page 58: Figure 33 - Lower Fill Piping Assembly (Mh-6N/6L Only)

    REPLACEMENT PARTS TO UPPER PIPING CUSTOMER WATER IN Figure 33 - MH-6N/6L Only Lower Fill Piping Assembly...
  • Page 59 LOWER FILL PIPING ASSEMBLY Fig. 33 Part Item No. 102444 ELBOW, STREET X 90° BRASS ... 0309340 BRACKET, PLUMBING SUPPORT ... 110768 LINE STRAINER, 3/4" BRASS ... 111437 VALVE 3/4" NPT HOT WATER ... 100184 NIPPLE 3/4" NPT ... 102525 TEE 3/4"...

  • Page 60: Figure 34 - Upper Fill Piping Assembly (Mh-6L Only)

    REPLACEMENT PARTS WATER IN FROM LOWER PIPING Figure 34 - MH-6L Only Upper Fill Piping Assembly...
  • Page 61 UPPER FILL PIPING ASSEMBLY Fig. 34 Part Item No. 102438 ELBOW STREET, 1/2" NPT X 90° BRASS ... 102567 NIPPLE, 1/2" NPT X 3" BRASS ... 102392 BUSHING, REDUCER 3/4" NPT X 1/2" NPT BRASS ... 0309529 CROSS, MODIFIED 3/4" NPT BRASS ... 108181 BUSHING, REDUCER 3/4"...

  • Page 62: Figure 35 - Pump Assembly

    REPLACEMENT PARTS Figure 35 - MH-60/6N/6L Pump Assembly...
  • Page 63 Fig. 35 Part Item No. 308005 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 64 REPLACEMENT PARTS POWER EXTENDED WASH CYCLE WASH RINSE PRESSURE Figure 36 - MH-60/6N/6L Control Panel and Gauges...

  • Page 65: Figure 36 - Control Panel And Gauges

    CONTROL PANEL AND GAUGES Fig. 36 Part Item No. 0501361 SWITCH, ON-OFF ... 112390 LITE, RED (POWER) ... 112391 LITE, AMBER (In-Cycle) ... 0501361 SWITCH, EXTENDED WASH ... 108391 THERMOMETER, 4 FT ... 112086 OVERLAY, WASH 150°F (MH-60/6N) ... 112093 OVERLAY, WASH 120°F (MH-6L Only) ...

  • Page 66: Figure 37 - Control Cabinet

    REPLACEMENT PARTS Figure 37 - MH-60/6N/6L Control Cabinet...
  • Page 67 Fig. 37 Part Item No. 0501379 Switch, timer ... 0508773 Motor, timer ... 0709633 Assembly, timer (includes Items 1, 2, 4) ... 0503701 Bearing, timer ... 111277 Transformer (120V : 24V) ... 106925 Block, fuse (30A, 3 pole) ... 0508675 Fuse, 10A ((MH60) 208-240V/3 ...
  • Page 68 REPLACEMENT PARTS Figure 38 - Dishracks and PRV...

  • Page 69: Figure 38 - Dishracks And Prv

    Fig. 38 Part Item No. 101273 RACK, (Flat Bottom) ... 101285 RACK, (PEG) ... 112387 LINE STRAINER/PRV COMBO ... DISHRACKS AND PRV Part Description REPLACEMENT PARTS Qty.

  • Page 70: Electrical Schematics

    REPLACEMENT PARTS ELECTRICAL SCHEMATICS THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 71: Figure 39 - Three Phase Electrical Schematic

    PER LOCAL ELECTRICAL CODE TO CUSTOMERS DISCONNECT SWITCH L1 L2 L3 N See NOTE 1 FTRA 120V NOTE 1: N is used only on Wye connected supplies (3 Phase 4 Wire Systems) Figure 39 - Electrical Schematic / 3 Phase (MH-60, 6N, 6L) L1 L2 L3 1MOL 3KW ELECTRIC TANK HEAT (IF USED)

  • Page 72: Figure 40 - Single Phase Electrical Schematic

    PER LOCAL ELECTRICAL CODE TO CUSTOMERS DISCONNECT SWITCH FTRA NOT USED IN 115V 1 PH. SEE NOTE 1 120V NOTE 1: IF SUPPLY IS 115 V 1 PH., T1 IS NOT USED. WIRES #1 AND #2 ARE CONNECTED TO THE FUSE BLOCK. 1MOL 3KW ELECTRIC TANK HEAT (IF USED) 9KW ELECTRIC BOOSTER HEAT (IF USED)

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