Moyer Diebel MH-6LM5, MH-60M5, MH-6NM5 User Manual
P. O. Box 4183
Winston-Salem, North Carolina 27115-4183
336/661-1992 Fax:336/661-1660
Moyer Diebel
Model
MH-60M5
High Temperature
with Built-in Booster
MH-6NM5
High Temperature
MH-6LM5
Low Temper atur e
Machine Serial No.
March, 2004
Technical Manual
Door-Type
Dishwasher
Manual P/N 113494 Rev E
2674 N. Service Road
Jordan Station, Ontario, Canada L0R 1S0
905/562-4195 Fax:905/562-4618
For machines beginning with
serial no. D3694 and above
COPYRIGHT © 2004 by Moyer Diebel
Machine
Machine Data Plate with
Model & Serial Number
located on the front panel.
Complete the information below so it will be available for quick reference.
Model Number Serial Number
Voltage and Phase
Moyer Diebel Parts Distributor Phone
(if applicable)
Moyer Diebel Service Agency Phone
Moyer Diebel Service:
Moyer Diebel, US
Phone: 1(336) 661-1992
1(800) 228-8350
Fax: 1(336) 661-1660
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.
Moyer Diebel, Limited
Phone: 1(905) 562-4195
1(800) 263-5798
Fax: 1(905) 562-4618
Revision History
REVISIONS
i
Revision Revised Serial Number Comments
Date Pages Effectivity
07/01/02 All D3694 Issue of New Service Manual and
replacement parts list
10/18/02 3 D3858 Revised rated amps listing
10/18/02 13, 17, 24 D3858 Revised cycle times
10/18/02 42,43 D3858 Revised rinse arm bearings and
assemblies numbers. Bearing 112164
replaced by 113514, 0707453 &
0708899 replaced by 414111.
10/18/02 37 D3858 Inserted new rinse arm assemblies 414110
(MH-60 & MH-6N) and 414111 (MH-6L)
10/18/02 53, 56 D3700 Inserted new bushing P/N 100171
10/24/02 63 D3858 Inserted new timer board for MH-60
and MH-6N P/N 113547
12/18/02 63 D3858 Inserted new timer control board kit.
P/N 900911 to convert all timer boards
to 113597.
2/5/03 47, 61 — Replace 108391 with 113622 thermometer.
2/5/03 63 Replaced Furnace (Siemens) overloads
with Telemecanique (Square D) overloads.
7/22/03 49 D3982 Replaced 110562 ith 113604.
7/22/03 53,57 –– Revised plastic style vacuum breakers with
bronze style.
7/22/03 61 –– Replaced P/N 112086 with 113622.
2/3/04 50-51 D4237 Insert new drawing and add seperate pressure
reducing valve 107550 and line strainer 110768.
2/3/04 33 –– Corrected side door part number 325409 to
325405.
CONTENTS
LIMITED WARRANTY................................................................................................................v
INTRODUCTION.......................................................................................................................... 1
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
Chemical Connections ....................................................................................................14
INITIAL START-UP ......................................................................................................................16
OPERATION SUMMARY ............................................................................................................22
CLEANING....................................................................................................................................23
Cleaning Schedule ..............................................................................................................23
Deliming Process ................................................................................................................24
TROUBLESHOOTING..................................................................................................................25
BASIC SERVICE ..........................................................................................................................27
REPLACEMENT PARTS ..............................................................................................................33
ELECTRICAL SCHEMATICS ......................................................................................................67
LIST OF FIGURES
Figure 1 – Remove Front Panel ................................................................................................ 8
Figure 2 – Electrical Connection Location................................................................................ 10
Figure 3 – Hinged Control Panel .............................................................................................. 11
Figure 4 – Main Terminal Block .............................................................................................. 11
Figure 5 – Hot Water Connection (MH-60 Only) .................................................................... 12
Figure 6 – Hot Water Connection (MH-6N, MH-6L Only)...................................................... 12
Figure 7 – Drain Hose Connection............................................................................................ 13
Figure 8 – Chemical Dispenser Signal Terminal Block............................................................ 14
Figure 9 – Chemical Signal Connection Points ........................................................................ 14
Figure 10 – Detergent Probe Injection Points, 1/2" .................................................................... 15
CONTENTS
ii
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 – float Switch Troubleshooting Chart ...................................................................... 29
Figure 17 – Heater Element Wiring .......................................................................................... 30
Figure 18 – Pump Motor Wiring Diagrams .............................................................................. 31
Figure 19 – Pump Seal Replacement........................................................................................ 32
Figure 20 – Doors and Panels .................................................................................................. 34
Figure 21 – Door Guides, Stops and Lift Bracket.................................................................... 36
Figure 22 – Door Handle, Spring Assembly and Safety Switch.............................................. 38
Figure 23A– Straight Track Assembly........................................................................................ 40
Figure 23B– Corner Track Assembl y ........................................................................................ 40
Figure 24 – Wash/Rinse Spray Piping ...................................................................................... 42
Figure 25 – Wash/Rinse Spray Arms........................................................................................ 44
Figure 26 – Drain Assembly and Scrap Screens ...................................................................... 46
Figure 27 – Wash Tank Heat and Thermostats ........................................................................ 48
Figure 28 – Electric Booster and Thermostats (MH-60 Only) ................................................ 50
Figure 29 – Lower Fill Piping Assembly (MH-60 Only).......................................................... 52
Figure 30 – Upper Fill Piping Assembly (MH-60/6N Only) .................................................... 54
Figure 31 – Lower Fill Piping Assembly (MH-6N/6L Only) .................................................. 56
Figure 32 – Upper Fill Piping Assembly (MH-6L Only) ........................................................ 58
Figure 33 – Pump Assembly .................................................................................................... 60
Figure 34 – Control Panel and Gauges .................................................................................... 62
Figure 35 – Control Cabinet .................................................................................................... 64
Figure 36 – Dishracks and PRV................................................................................................ 66
ELECTRICAL SCHEMATICS
B701602/H – Wiring Diagrams (MH-60, MH-6N, MH-6L Steam/Electric 1 & 3 Phase)............67
CONTENTS
iii
iv
THIS PAGE
INTENTIONALLY
LEFT BLANK
LIMITED W ARRANTY
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.
Warranty of Machines: 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. [See below for special provisions relating to Model Series
DF and SW.] The warranty registration card must be returned to Champion/Moyer Diebel within ten (10) days after installation. If warranty card is not returned to Champion/Moyer Diebel within such period, the warranty will expire after one
year from the date of shipment.
Champion/Moyer Diebel will not assume any responsibility for extra costs for installation in any area where there are
jurisdictional problems with local trades or unions.
If a defect in workmanship or material is found to exist within the warranty period, Champion/Moyer Diebel, at its election,
will either repair or replace the defective machine or accept return of the machine for full credit; provided, however, as to
Model Series DF and SW, Champion/Moyer Diebel's obligation with respect to labor associated with any repairs shall end
(a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event that Champion/Moyer Diebel
elects to repair, the labor and work to be performed in connection with the warranty shall be done during regular working
hours by a Champion/Moyer Diebel authorized service technician. Defective parts become the property of Champion/Moyer
Diebel. Use of replacement parts not authorized by Champion/Moyer Diebel will relieve Champion/Moyer Diebel of all
further liability in connection with its warranty. In no event will Champion/Moyer Diebel's warranty obligation exceed
Champion/Moyer Diebel's charge for the machine. The following are not covered by Champion/Moyer Diebel's warranty:
a. Lighting of gas pilots or burners.
b. Cleaning of gas lines.
c. Replacement of fuses or resetting of overload breakers.
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, alterations, improper use, abuse,
tampering, improper installation, or failure to follow maintenance and operation procedures.
Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or interior
finish as a result of the above, (2) Use with utility service other than that designated on the rating plate, (3) Improper
connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosion from chemicals dispensed in excess
of recommended concentrations, (6) Failure of electrical components due to connection of chemical dispensing equipment
installed by others, (7) Leaks or damage resulting from such leaks caused by the installer, including those at machine table
connections or by connection of chemical dispensing equipment installed by others, (8) Failure to comply with local
building codes, (9) Damage caused by labor dispute.
Warranty of Parts: Champion/Moyer Diebel warrants all new machine parts produced or authorized by Champion/Moyer
Diebel to be free from defects in material and workmanship for a period of 90 days from date of invoice. If any defect in
material and workmanship is found to exist within the warranty period Champion/Moyer Diebel will replace the defective
part without charge.
DISCLAIMER OF
WARRANTIES AND LIMITATIONS OF LIABILITY. CHAMPION/MOYER DIEBEL'S
WARRANTY IS ONLY T O THE EXTENT REFLECTED ABOVE.CHAMPION/MOYER DIEBEL MAKES NO OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF MERCHANTABILITY,OR FITNESS OF PURPOSE. CHAMPION/MOYER DIEBEL SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE THE EXCLUSIVE REMEDIES FOR ANY DEFECTS FOUND TO EXIST IN CHAMPION/MOYER DIEBELDISHWASHING MACHINES AND
CHAMPION/MO YER DIEBEL PARTS,AND ALL O THER REMEDIES ARE EXCLUDED,INCLUDING ANY LIABILITY FOR INCIDENTALS OR CONSEQUENTIAL DAMAGES.
Champion/Moyer Diebel does not authorize any other person, including persons who deal in Champion/Moyer Diebel
dishwashing machines, to change this warranty or create any other obligation in connection with Champion/Moyer Diebel
Dishwashing Machines.
rev. 8699
WARRANTY
v
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INTENTIONALLY
LEFT BLANK
vi
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.
This manual contains:
• Installation Instructions
• Operation and Cleaing Instructions
• Troubleshooting Guide
• Basic Service Information
• Replacement Parts Lists
• Electrical Schematics
All information, illustrations and specif ications contained in this manual are based upon
the latest product information available at the time of publication. Moyer Diebel constantly
improves its products and reserves the right to make changes at any time or to change
specifications or design without notice and without incurring any obligation.
For your protection, factory authorized par ts 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 par ts, please supply the model number, serial number, voltage, and phase of your machine, the part number, part descriptions and quantity.
1
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 50 PPM in the final rinse.
Standard Equipment includes:
MH-60, MH-6N, MH-6L
• Automatic tank fill and start
• Built-in electric booster heater (MH-60 only)
• Field convertible to corner model with kit
• Electric tank heat
• Balanced two door lift system
• Low-water tank heat protection
• 1-hp drip-proof pump motor
• Door safety switch
Options (MH-60 only)
• Electric booster (70°F/39°C temperature
rise) heater for 110°F/43°C supply water
• Steam injector or steam coil tank heat
(steam booster 40°F/23°C-70°F/39°C rise)
Accessories
Additional dishracks:
Dish rack (peg) P/N 101285
Silverware rack (flat bottom) P/N 101273
3/4" Pressure reducing valve (PRV) P/N 112387
2
• Common utility connections
• Two dish racks (peg and flat bottom)
• Detergent/chemical connection provisions
• Stainless steel front and side panels
• 60-second time cycle
• 1-1/2" O.D. gravity drain connection
• Water pressure reducing valve (MH-60 only)
• Interchangeable upper and lower spray arms
• Stainless steel rinse arms with cleanout
GENERAL
Electrical Power Requirements: Fig Electric Heat/Electric Booster
Model Voltage Booster Rise Rated Minimum Supply Ckt. Maximum Overcurrent
(MH-60 Only) Amps Conductor Ampacity Protective Device
MH-6N/MH-6L 115/60/1 — 46 Amps 60 Amps 86 Amps
MH-6N/MH-6L 208/60/1 — 35 Amps 40 Amps 40 Amps
MH-6N/MH-6L 220/60/1 — 35 Amps 40 Amps 40 Amps
MH-6N/MH-6L 230/60/1 — 37 Amps 40 Amps 40 Amps
MH-6N/MH-6L 240/60/1 — 37 Amps 40 Amps 40 Amps
MH-6N/MH-6L 208/60/3 — 20 Amps 25 Amps 25 Amps
MH-6N/MH-6L 220/60/3 — 20 Amps 25 Amps 25 Amps
MH-6N/MH-6L 230/60/3 — 21 Amps 25 Amps 25 Amps
MH-6N/MH-6L 240/60/3 — 21 Amps 20 Amps 25 Amps
MH-6N/MH-6L 380/60/3 — 8 Amps 15 Amps 15 Amps
MH-6N/MH-6L 415/60/3 — 9 Amps 15 Amps 15 Amps
MH-6N/MH-6L 480/60/3 — 9 Amps 15 Amps 15 Amps
MH-6N/MH-6L 575/60/3 — 7 Amps 15 Amps 15 Amps
MH-60 115/60/1 — — — —
MH-60 208/60/1 40°F/23°C 71 Amps 75 Amps 75 Amps
MH-60 220/60/1 40°F/23°C 71 Amps 75 Amps 75 Amps
MH-60 230/60/1 40°F/23°C 79 Amps 90 Amps 90 Amps
MH-60 240/60/1 40°F/23°C 79 Amps 90 Amps 90 Amps
MH-60 208/60/3 40°F/23°C 40 Amps 45 Amps 45 Amps
MH-60 220/60/3 40°F/23°C 40 Amps 45 Amps 45 Amps
MH-60 230/60/3 40°F/23°C 45 Amps 50 Amps 50 Amps
MH-60 240/60/3 40°F/23°C 45 Amps 50 Amps 50 Amps
MH-60 380/60/3 40°F/23°C 26 Amps 30 Amps 30 Amps
MH-60 415/60/3 40°F/23°C 27 Amps 30 Amps 30 Amps
MH-60 480/60/3 40°F/23°C 20 Amps 25 Amps 25 Amps
MH-60 575/60/3 40°F/23°C 16 Amps 20 Amps 20 Amps
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 70°F/39°C 57 Amps 60 Amps 60 Amps
MH-60 220/60/3 70°F/39°C 57 Amps 60 Amps 60 Amps
MH-60 230/60/3 70°F/39°C 64 Amps 70 Amps 70 Amps
MH-60 240/60/3 70°F/39°C 64 Amps 70 Amps 70 Amps
MH-60 380/60/3 70°F/39°C 35 Amps 40 Amps 40 Amps
MH-60 415/60/3 70°F/39°C 37 Amps 45 Amps 45 Amps
MH-60 480/60/3 70°F/39°C 29 Amps 35 Amps 35 Amps
MH-60 575/60/3 70°F/39°C 25 Amps 30 Amps 30 Amps
Electrical Po wer Requirements:Fig Steam or Gas Heat/Steam or Gas Booster
Model Voltage Booster Rise Rated Minimum Supply Ckt. Maximum Overcurrent
(D-HBT Only) Amps Conductor Ampacity Protective Device
MH-6N/MH-6L 115/60/1 — 20 Amps 25 Amps 25 Amps
MH-6N/MH-6L 208/60/1 — 12 Amps 15 Amps 15 Amps
MH-6N/MH-6L 220/60/1 — 12 Amps 15 Amps 15 Amps
MH-6N/MH-6L 230/60/1 — 11 Amps 15 Amps 15 Amps
MH-6N/MH-6L 240/60/1 — 11 Amps 15 Amps 15 Amps
MH-6N/MH-6L 208/60/3 — 6 Amps 15 Amps 15 Amps
MH-6N/MH-6L 220/60/3 — 6 Amps 15 Amps 15 Amps
MH-6N/MH-6L 230/60/3 — 6 Amps 15 Amps 15 Amps
MH-6N/MH-6L 240/60/3 — 6 Amps 15 Amps 15 Amps
MH-6N/MH-6L 380/60/3 — 4 Amps 15 Amps 15 Amps
MH-6N/MH-6L 415/60/3 — 4 Amps 15 Amps 15 Amps
MH-6N/MH-6L 480/60/3 — 3 Amps 15 Amps 15 Amps
MH-6N/MH-6L 575/60/3 — 3 Amps 15 Amps 15 Amps
MH-60 115/60/1 — — — —
MH-60 208/60/1 40°F/23°C 13 Amps 15 Amps 5 Amps
MH-60 220/60/1 40°F/23°C 13 Amps 15 Amps 15 Amps
MH-60 230/60/1 40°F/23°C 12 Amps 15 Amps 15 Amps
MH-60 240/60/1 40°F/23°C 12 Amps 15 Amps 15 Amps
MH-60 208/60/3 40°F/23°C 6 Amps 15 Amps 15 Amps
MH-60 220/60/3 40°F/23°C 6 Amps 15 Amps 15 Amps
MH-60 230/60/3 40°F/23°C 6 Amps 15 Amps 15 Amps
MH-60 240/60/3 40°F/23°C 6 Amps 15 Amps 15 Amps
MH-60 380/60/3 40°F/23°C 4 Amps 15 Amps 15 Amps
MH-60 415/60/3 40°F/23°C 4 Amps 15 Amps 15 Amps
MH-60 480/60/3 40°F/23°C 3 Amps 15 Amps 15 Amps
MH-60 575/60/3 40°F/23°C 3 Amps 15 Amps 15 Amps
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 70°F/39°C 6 Amps 15 Amps 15 Amps
MH-60 220/60/3 70°F/39°C 6 Amps 15 Amps 15 Amps
MH-60 230/60/3 70°F/39°C 6 Amps 15 Amps 15 Amps
MH-60 240/60/3 70°F/39°C 6 Amps 15 Amps 15 Amps
MH-60 380/60/3 70°F/39°C 4 Amps 15 Amps 15 Amps
MH-60 415/60/3 70°F/39°C 4 Amps 15 Amps 15 Amps
MH-60 480/60/3 70°F/39°C 3 Amps 15 Amps 15 Amps
MH-60 575/60/3 70°F/39°C 3 Amps 15 Amps 15 Amps
3
INSTALLATION
INSTALLATION
Unpack the dishwasher
CAUTION:
Care should be taken when lifting the
machine to prevent damage.
NOTE:
The installation of your machine must meet
all applicable health and safety codes.
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
Operation to Corner Operation on the next
page if your machine will be placed for
corner operation.
3. Level the machine (if required) by placing a
level on the top of the machine and adjusting
the feet. Level the machine front-to-back and
side-to-side.
4. Remove the dishracks from the interior of
the machine.
5. Refer to Fig. 1. Remove (2) screws that hold
the front panel. Remove the front panel in
preparation for service connections.
Figure 1
Remove Front Panel
4
Changing Operation – Straight-through to Corner
Your door-type dishwasher was specified to the factor y as a straight-through configuration or
as a corner conf iguration. Your machine can be converted from straight-through to corner or
from corner to straight-through. Contact the factory for instr uctions on changing the operation
of your dishwasher.
!
POWER
FILL
CYCLE
EXTENDED
WASH
RINSE
WASH
WARNING!
TURN OFF POWER BEFORE
SERVICING MACHINE
INSTALLATION
INSTALLATION (Cont.)
Electrical Connections
WARNING:
Electrical and grounding connections
must comply with all applicable
Electrical Codes.
WARNING:
When working on the dishwasher, disconnect 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
electrical power supply with the machine
electrical specifications before connecting
to the incoming service through a fused
disconnect switch.
Refer to Fig. 2
2. A knock-out is provided at the lower right
rear corner (as viewed from the front) for
the electrical service connection. A fused
disconnect switch or circuit breaker (supplied by others) is required to protect the
power supply circuit.
Figure 2
Electrical Connection Location
5
Electrical knock-out
lower rear corner
!
!
Electrical Connections (Cont.)
Refer to Fig. 3
3. Remove (2) lower screws from the front
panel of the machine to expose the electrical controls. Remove (2) screws on the
control panel support. Swing the hinged
control panel forward.
Refer to Fig. 4
4. Three phase or single phase incoming
power wiring connections are made at the
bottom of the machine’s main terminal
block. The main terminal block is located
on the side of the front right post of the
dishwasher.
INSTALLATION
Figure 3
Hinged Control Panel
6
Figure 4
Main T erminal Block
Electrical Power Connection
INSTALLATION
7
Figure 5
Hot W ater Connection
(MH-60 Only)
3/4" NPT
Figure 8
Hot W ater Connection
(MH-6N, MH-6L Only)
3/4" NPT
INSTALLATION (Cont.)
Plumbing Connections
NOTE:
Plumbing connections must comply
with all applicable sanitary and
plumbing codes.
Water 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. flow pressure
20-22 PSI/138-151.8 kPa)
MH-60 with built-in 70° rise electric
booster (Minimum 110°F/43°C)
(Min./Max. flow pressure
20-22 PSI/138-151.8 kPa)
MH-6N without built-in booster
(Minimum 180°F/70°C)
(Min./Max. flow pressure
20-22 PSI/138-151.8 kPa)
MH-6L low temperature
(Minimum 120°F/49°C140°F/60°C Optimum)
(Min./Max. flow pressure
20-22 PSI/138-151.8 kPa)
Refer to Figs. 5 and 6
12"
[305mm]
FLOOR
12"
[305mm]
FLOOR
INSTALLATION
8
Water Connections (Cont.)
2. A manual shut-off valve for steam and water
(supplied by others) should be installed in
the supply line to allow for
servicing of the machine. The shut-off
valve should be the same size or larger
than the supply line.
3. Install a 3/4" pressure reducing valve (PRV)
in the water supply line if flow pressure
exceeds 20-22 PSI/138-151.8 kPa.
A PRV is standard equipment on Model
MH-60. A PRV is not standard equipment
on Models MH-6N, MH-6L.
Figure 7
Drain Hose Connection
1-1/2" O.D.
(Max flow rate = 15 gal/min-56.8 liters/min)
Drain Connections
Refer to Fig. 9
1. MH series models are GRAVITY DRAIN
machines equipped with a 1-1/2" O.D.
hose connection point.
2. The maximum drain flow rate is
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.
CAUTION:
Exhaust air should not be vented into a
wall, ceiling, or concealed space of a
building. Condensation can cause damage.
11" [280mm]
Above floor level
!
RINSE
INSTALLATION
9
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. 9
3. The detergent signal is limited
to a maximum load of 1 Amp.
Signal voltage is 115VAC.
4. The Rinse aid/Sanitizer
signal is limited to a maximum load of 1 Amp.
Signal voltage is 115VAC.
Rinse aid/Sanitizer
Signal Connection Point
1 Amp Max load/115VAC
Figure 8
Chemical Dispenser
Signal
Terminal Block
Figure 9
Chemical Signal
Connection Points
Common Return
Detergent Signal Connection Point
1 Amp Max Load/115VAC
INSTALLATION
10
Chemical Connections (Cont.)
Refer to Fig. 10
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.
Refer to Fig. 11
7. MH-60,
6N, 6L
A 1/4" NPT rinse aid injection point is
provided in the final rinse manifold.
Use a liquid rinse aid.
The manifold is located on the top right
side of the dishwasher.
8. MH-6L Onl
y
A 1/8" NPT sanitizer injection point is
provided in the final rinse manifold.
Models MH-60 and MH-6N do not
require sanitizer.
9. Use a sodium hypochlorite (Chlorine)
based sanitizer at a minimum
concentration of 50PPM in the final rinse.
10. Use chlorine test papers to verify and
monitor the 50PPM chlorine level.
WARNING:
Never premix rinse aid with the
sanitizing agent. Mixing may cause
hazardous gases to form.
CAUTION:
Some metals, including silver, aluminum
and pewter, are attacked by sodium
hypochlorinte (chlorine). Avoid cleaning
these metals in a MH-6L.
Figure 10
Detergent Probe
Injection Points, 1/2"
Figure 11
Rinse Aid and
Sanitizer Injection Points
(Top of Dishwasher)
MH-60, 6N
!
!
1/4" NPT rinse-aid
injection point
Model MH60, 6N, 6L
1/8" NPT sanitizer
injection point
Model MH6L Only
INITIAL START-UP
11
Install the Scrap Screens
and Drain-Overflow Assembly
Install scrap screens.
Make sure rubber stopper is secure on the
drain-overflow assembly.
Make sure the drain-overflow
seats securely in the tank bottom.
MAKE SURE DOORS
ARE FULLY CLOSED.
The controls are located
on the front of the dishwasher.
A- On/Off power switch
B- Power indicator Light
C- In-cycle light
D- Extended wash switch
E- Wash water temperature gauge
F- Final rinse pressure gauge
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.
3. Make sure dishwasher power switch is off.
4. Turn main water supply on.
5. Turn main power on at the main power
service disconnect switch.
1
2
WASH
EXTENDED
WASH
CYCLE
POWER
OFF
RINSE PRESSURE
C
F
D
A
B
E
INITIAL START-UP
12
Check W ash
Water T emperature
The wash tank heater and the (booster tank
heater, MH-60 only) 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).
The MH-6L requires a minimum of
120°F/49°C. However, a minimum of
140°F/60°C is optimum for the MH-6L.
Prescrap the dishes. Load ware into the
dishrack. Open the doors, insert the rack
into the dishwasher.
Note that the power indicator light
is illuminated.
THE POWER SWITCH IS
ON DURING INITIAL FILL.
Make sure the doors are fully closed.
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.
3
4
INITIAL START-UP (CONT.)
5
POWER
OFF
POWER
OFF
WASH
WASH
CYCLE
EXTENDED
CYCLE
RINSE PRESSURE
EXTENDED
RINSE PRESSURE
WASH
WASH
POWER
OFF
WASH
EXTENDED
CYCLE
RINSE PRESSURE
WASH
INITIAL START-UP
13
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:
Wash = 48 seconds
Dwell = 4 second
Final rinse = 8 seconds
Note that the in-cycle light is lit during
the automatic dishwasher cycle.
INITIAL START-UP (CONT.)
6
7
POWER
OFF
WASH
EXTENDED
CYCLE
RINSE PRESSURE
WASH
INITIAL START-UP
14
Check Final Rinse
Water T emperature
Check the final rinse water temperature during
the final rinse cycle.
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.
The MH-6L requires a minimum final
rinse temperature of 120°F/49°C. However,
a minimum final rinse temperature of
140°F/60°C is optimum for the MH-6L.
Check Final Rinse
Water Pressure
The final rinse water pressure gauge
should indicate a flowing pressure of
20-22 PSI/138-151.8 kPa during the
final rinse cycle for all models.
A pressure reducing valve (PRV) is
required if flow pressure exceeds
20-22 PSI/138-151.8 kPa.
9
INITIAL START-UP (CONT.)
250
200
150
100
50
0
8
POWER
OFF
WASH
EXTENDED
CYCLE
RINSE PRESSURE
WASH
INITIAL START-UP
15
The Extended Wash
Operation
The extended wash switch holds the
dishwasher in a continuous wash mode
for cleaning heavily soiled ware.
Open and then fully close the dishwasher
doors. The dishwasher will begin a wash
cycle automatically.
Push the Extended wash switch UP
to the extended wash position.
The dishwasher will remain in a continuous wash
mode until the switch is flipped down. The dishwasher
will resume the cycle and finish with a final rinse.
Drain the dishwasher
Make sure the dishwasher power switch is
turned off. Drain the dishwasher by pulling
the handle of the drain-overflow assembly
straight up. Rotate the handle 90° to lock
the drain in the up position.
INITIAL START-UP (CONT.)
Complete the initial start-up
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.
WASH
EXTENDED
WASH
CYCLE
POWER
OFF
RINSE PRESSURE
10
11
12
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