RevisionRevisedSerial Number Comments
DatePagesEffectivity
09/01/01—First issue of manual and replacement parts
06/10/023Inserted electrical wiring diagrams.
3/28/0316, 17Inserted revised drawing and parts list.
i
Page 4
REVISION RECORD
ii
Page 5
TABLE OF CONTENTS
CONTENTS
Page
REVISION HISTORY ....................................................................................................................i
Figure 2— Wash Tank Assembly....................................................................................................12
Figure 3— Wash and Rinse Assemblies .......................................................................................... 14
Figure 4— Rinse Booster Assembly and Rinse System ..................................................................16
Figure 5— Control Cabinet ............................................................................................................. 18
Figure 6— Control Panel ................................................................................................................. 20
iii
Page 6
THIS PAGE
INTENTIONALLY
LEFT BLANK
iv
Page 7
GENERAL SPECIFICATION
GENERAL SPECIFICATIONS
About this manual
All information, illustrations and specifications contained in this manual are based upon the
latest product information available at the time of publication. Champion 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.
Organization of Manual
This manual is divided into seven parts:
• General Specifications
• Installation
• Daily Operation
• Cleaning and Maintenance
• Troubleshooting
• Replacement Parts, contains parts diagrams and parts list.
• Electrical Schematics
NOTE:
Unless noted otherwise, dimensions, capacities, temperatures, etc., given in this manual
are U.S. Customary Measures and the Metric Equivalent of the U.S. Customary measures.
Model
The M-DH model is a high temperature (180F/82°C rinse) sanitizing model with booster.
Standard Equipment
•Automatic operation
•Built-in electric booster heater
•Field convertible to corner model
•Electric tank heat
•Extended wash/de-lime switch
•Low-water tank heat protection
•1-hp drip-proof pump motor
•Splash-proof control console
•Door safety switch
•Common utility connections
•Detergent/chemical connection
provisions
•Balanced door lift system
•Stainless steel front and side panels
•Interchangeable upper and lower
spray arms
•International symbols on controls
1
Page 8
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.
3. Machine must be placed on a sound self-draining floor.
4. Level the machine (if required) by placing a level on the top of the
machine and adjusting the feet. Level the machine from
front-back and side to side.
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
Electrical Connections
WARNING:
!
Electrical 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.
2. Recommended electrical supply is three phase, permanently wired via wall switch
mounted adjacent to machine. Machine may also be installed on 25A single phase (15A
single phase with reduced rinse heating). Easy on site conversion of standard machine for
any of these requirements.
3. A knock out is provided at the lower right rear corner (as viewed from the front) for
electrical service connection. A fused disconnect switch or circuit breaker (supplied by
others) is required to protect the power supply circuit.
4. Remove (2) lower screws from the front panel of the machine to expose the electrical
controls.
5. Three phase or single phase incoming wire 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.
2
Page 9
SINGLE PHASE CONNECTION
INSTALLATION
L1
Connect (1) Hot wire
to either L1, L2 or L3
THREE PHASE CONNECTION
L1
L2L3
208/240V
L2L3
N
Connect the second
Hot wire to "N"
terminal
NOTE: Remove Jumper
wires for 3 phase
applications.
N
Ground
Earth
Ground
Ground
208/240V
208/240V
Connect (3) Hot wires
to L1, L2 and L3
Figure 2
Wiring Connections
208/240V
Connect the
Neutral wire
to "N" terminal
{
Earth
Ground
3
Page 10
INSTALLATION
INSTALLATION (CONT.)
Plumbing Connections
NOTE:
Plumbing connections must comply with all applicable sanitary and plumbing codes.
Water Connections
1. All M-DH dishwashers require a single, hot water supply.
2. The hot water connection to the dishwasher is 1/2” BSP male.
3. The connection is made from underneath the dishwasher.
4. The recommended minimum water temperature is 140F/60°C.
5. A manual shut-off valve for 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.
6. Install a pressure reducing valve (PRV) in the water supply line if flow pressure exceeds
20-22 PSI/138-151.8kPa.
Drain Connections
1. The dishwasher is a gravity drain machine equipped with 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 the dishwasher must not exceed 11” (280mm) above the floor level.
4. The drain connection is made to the dishwasher from behind the machine or through an
access hole in the base of the machine.
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.
4
Page 11
INSTALLATION (CONT.)
Chemical Connections
NOTE:
Consult a qualified chemical supplier for your chemical needs.
1. A chemical signal terminal block is supplied for chemical dispensing equipment.
2. The terminal block is located below the control panel fuse block.
3. The detergent signal is limited to a maximum load of 1 Amp. Signal voltage is 115VAC.
4. The Rinse aid signal is limited to a maximum load of 1 Amp. Signal voltage is 115VAC.
5. The feeder units must have separate neutrals for detergent and rinse aid connections.
INSTALLATION
6. A 1/2” detergent injection point is provided at the rear and left side of the dishwasher.
7. Detergent may be added manually, put in three tablespoons of powdered domestic detergent into the wash tank after the machine has been filled, then add another tablespoon full
after every fourth or fifth cycle. This is not recommended except in a temporary situation,
ex: dispensing equipment is down, out of chemical and awaiting supplier, etc.
8. Rinse aid injectors can be purchased separately. There is a 1/4” NPT rinse aid injection
point provided in the final rinse manifold. Use a liquid rinse aid. Contact your local
chemical supplier about product type for factors such as water hardness etc.
Peristaltic Detergent Pump
To prime the peristaltic pump:
1. Insert pump inlet hose into the detergent container.
2. Close machine door and switch machine on.
3. Allow wash tank to fill up then press detergent pump prime switch to prime inlet and
outlet hose.
4. Stop priming when detergent reaches machine.
Machine will not fill unless READY light is on and door is shut. Turn power off before
opening door as machine will cycle again when door is closed. Pump operates during the wash
cycle and is set to run for approximately 10 seconds. Use yellow adjusting tool, supplied with
the instructions, to adjust cam 6 to vary this time. Increase cam gap (away from 0 mark) to
increase pumping time.
5
Page 12
OPERATION
INITIAL START-UP
Complete the installation
After the plumbing and electrical connections are made, follow the steps below to complete
the installation of your dishwasher.
1. Remove the protective covering from the exterior of the machine.
2. Remove any foreign material from the inside of the machine.
3. Make sure dishwasher power is off.
4. Turn the main water supply on.
5. Turn main power on at the main power service disconnect switch.
6. Install the scrap screens.
7. Make sure that the overflow seats securely in the tank bottom.
8. Make sure doors are fully closed.
9. The control panel is located on the lower right side of machine. Select any cycle (1, 2, 3
10. The ON light will glow red and the machine will fill automatically.
minutes).
11. When machine is full the tank heater and booster heater will begin to heat the water in the
dishwasher. Wait approximately 10 minutes for the wash tank to reach operating temperature. The temperature should be a minimum of 140F/60°C. The machine is ready for use
when the READY light (tick symbol) glows amber.
OPERATION
Operation and Use
1. Before washing make sure that:
• wall mounted on/off switch is switched on;
• water supply is open and water pressure is present;
• pump suction filters are installed in proper location;
• overflow tube is inserted in drain;
• rotating spray arms move freely;
• rinse and detergent containers are full;
2. Select required cycle. Try cycle 3 initially and switch to faster cycles only if necessary.
3. Scrap and preflush all items to be washed. Load items into the rack. Do not overload the
rack. Wash only one layer of silverware in a rack.
4. Open the door and insert the rack into machine. Close door.
Machine will not operate unless the READY light is on. Wash temperature light (thermometer symbol) glows amber when wash temperature has been reached. After removing
racks from machine, DO NOT shut door as machine will start up again.
6
Page 13
DAILY CLEANING
1. Turn dishwasher and wall switch OFF.
2. Remove the overflow to drain wash tank.
3. Remove scrap screens and wash pump inlet screen. Rinse thoroughly to make sure that
they are clean. Do not bang or beat them on the side of sink or other hard objects as this
will eventually cause them to break or bend thus causing them to fit or work properly.
4. Reinstall the overflow, pump screen, and the scrap screens.
Frequently check and clean the nozzles. Blocked nozzles will prevent the machine from
cleaning properly. To clean the wash/rinse arms:
1. Undo the thumbscrew that holds the arms in place. Do not remove the retaining plate.
2. Twist and remove the end nozzle then withdraw the end cap.
3. Flush arms with water, use a toothpick or paperclip (if necessary) to clear the nozzles.
4. Do not beat the arms on anything to clean nozzles.
5. Replace end cap and end nozzle.
MAINTENANCE
6. Replace arms back into position in machine.
To flush out dishwasher if needed:
1. Leave the overflow out of machine.
2. Close the door.
3. Turn power ON at the dishwasher.
4. Leave on machine on for about 20 seconds. DO NOT leave machine unattended during
this process.
5. Shut power OFF to dishwasher.
7
Page 14
MAINTENANCE
MAINTENANCE
Before carrying out the cleaning and the maintenance operations, turn off the main disconnect
switch for the equipment.
Do not use corrosive products such as sodium hypochlorite (bleach), acids, steel wool or steel
brushes to clean the inside and the outside of machine.
The presence of calcium and magnesium salt in water can compromise machine performance.
Asked a qualified chemical person to remove the deposits periodically.
Stainless steel surfaces should be cleaned well in order to avoid some oxidation risks, or
chemical reactions.
Optimal Results:
Poor wash results can be noted when residue remains on the dishware. To guard against poor results,
make sure of the following:
• Wash nozzles are clean.
• Rinse nozzles are clean and there is sufficient water supply pressure
20-22 PSI/138-151.8kPa.
• Water temperature is a minimum of 140F/60°C.
• Detergent is in the chemical container
• Pump suction filters are clean.
• Racks are suitable for the dishes and cutlery that are to be washed.
8
Page 15
TROUBLESHOOTING
TROUBLESHOOTING
In order to find the cause of a breakdown or abnormal operating condition in your dishwasher
please ensure that:
1. All switches are ON
2. Drain and overflow tube are in place and seated
3. Wash pipe and rinse nozzles are clean
4. Scrap screens and pump inlet screen are properly positioned
5. Spray arms are in their proper positions
6. Thermostat(s) are at their correct setting
7. Detergent, and rinse additive dispensers are adequately filled
8. Doors are fully closed.
If a problem still exists, use the following table for troubleshooting
CONDITIONCAUSESOLUTION
Cycle will not startDoor not closed ................................ Make sure doors are fully closed
Door safety switch faulty ................. Contact your service agency
Start switch faulty ............................ Contact your service agency
Main switch off ................................ Check disconnect
Overload protector tripped ............... Reset overload in control box
Not up to temperature ...................... Give machine time to initially reach
1540030072Wash Arm Spindle ..................................................................................1
1632510014Wash Arm Assembly (includes items 1-6) .............................................A/R
1781510013Rinse Arm Assembly (include items 5, 7-12) .........................................A/R
15
Page 22
REPLACEMENT PARTS
9
BULKHEAD NUT & GASKET
NOTE #1. USE THREAD TAPE ON CROX AND THREADED
FITTINGS TO SEAL JOINTS.
NOTE #2. USE 243 LOCTITE ON SPINDLE THREAD
BEFORE FITTING INTO WASH HUB.
NOTE #3. USE 243 OR 290 LOCTITE TO LOCK BOLT TO
BASE PLATE.
NOTE #4. USE 10-12 TURNS OF THREAD TAPE ON ALL
JOINTS.
NOTE #5. ENSURE LINE STRAINER AND SOLENOID FLOW
DIRECTIONS ARE AS SHOWN.