Champion Industries Inc. (herein referred to as Champion), P.O. Box 4149, 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 warrants all new machines of its manufacture bearing the name “Champion”
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, whichever occurs first. [See below for special provisions relating to glasswashers.] The warranty
registration card must be returned to Champion within ten (10) days after installation. If warranty card is not
returned to Champion within such period, the warranty will expire after one year from the date of shipment.
Champion 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, at its election,
will either repair or replace the defective machine or accept return of the machine for full credit; provided,
however, as to glasswashers, Champion’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
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 authorized service technician. Defective parts become the property of Champion.
Use of replacement parts not authorized by Champion will relieve Champion of all further liability in connection
with its warranty. In no event will Champion’s warranty obligation exceed Champion’s charge for the machine.
The following are not covered by Champion’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. Cleaning of valves, strainers, screens, nozzles, or spray pipes.
h. Performance of regular maintenance and cleaning as outlined in operator’s guide.
i. Damages resulting from water conditions, accidents, alterations, improper use, abuse,
tampering, improper installation, or failure to follow maintenance and operation procedures.
j. Wear on Pulper cutter blocks, pulse vanes, and auger brush.
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 warrants all new machine parts produced or authorized by Champion 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 will replace the defective
part without charge.
DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY
IS ONLY TO THE EXTENT REFLECTED ABOVE. CHAMPION MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED, TO ANY WARRANTY OF
MERCHANTABILITY, OR FITNESS OF PURPOSE. CHAMPION 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 DISHWASHING
MACHINES AND CHAMPION PARTS, AND ALL OTHER REMEDIES ARE EXCLUDED, INCLUDING
ANY LIABILITY FOR INCIDENTALS OR CONSEQUENTIAL DAMAGES.
. CHAMPION’S WARRANTY
Champion does not authorize any other person, including persons who deal in Champion dishwashing machines to
change this warranty or create any other obligation in connection with Champion Dishwashing Machines.
vii
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THIS PAGE
INTENTIONALLY
LEFT BLANK
viii
Page 11
INTRODUCTION
INTRODUCTION
Welcome to Champion . . .
and thank you for allowing us to take care of your dishwashing needs.
This manual covers the door-type series dishwasher models D-H1, D-HB, and D-LF.
Your machine was completely assembled, inspected, and thoroughly tested at our factory
before it was shipped to your installation site.
This manual contains:
• Warranty Information
• Operation and Cleaning Instructions
• Maintenance Instructions
• Troubleshooting Guide
• Basic Service Information
• Replacement Parts Lists
• Electrical Schematics
Complete and return your warranty registration card within ten (10) days after the installation of
your machine.
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 obligation.
For your protection, factory authorized parts should always be used for repairs.
Replacement parts may be ordered from your Champion authorized parts distributor or from your
Champion authorized service agency. When ordering parts, please supply the model number,
serial number, voltage and phase of your machine, the part number, part description and quantity.
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Page 12
GENERAL
GENERAL
This manual covers the Champion door type dishwashing machine. These machines are fully
automatic and come equipped with a 1-HP pump motor.
The D-series dishwasher is available in the following models:
Model Number
D-H1, D-HB, D-LF
The D-H1 model is a high temperature (180°F/82°C rinse) sanitizing model without booster.
The D-HB model is a high temperature (180°F/82°C rinse) sanitizing model with booster.
The D-LF is a low temperature (Min. 140°F/60°C) sanitizing model for use with a sodium
hypochlorite (Chlorine) based sanitizer at a minimum concentration of 50PPM in the final rinse.
s
Standard Equipment includes:
D-H1, D-HB, D-LF
• Automatic tank fill• Common utility connections
• Built-in electric (D-HB only) or • Two dish racks (peg and flat bottom)
steam booster heater (D-HB only)• Detergent/chemical connection provisions
• Drain Valve – Electric• Stainless steel front and side panels
• Specified as straight-through or corner model• Top-mounted, splash-proof control console
• Electric tank heat• 60-second time cycle
• Balanced two door lift system• 2" O.D. gravity drain connection
• Low-water tank heat protection• Water pressure regulating valve
• 1-Hp drip-proof pump motor(mounted) (D-HB only)
• Door safety switches• Interchangeable upper and lower spray arms
• Stainless steel rinse arm with cleanout
Options (D-HB 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)
1. Immediately after unpacking the machine, inspect for any shipping damage. If damage
2. Remove the dishwasher from the skid. Adjust the feet if required, then move the
3. Level the machine (if required) by placing a level on the top of machine and adjusting
CAUTION:
Care should be taken when lifting the machine to prevent damage.
is found, save the packing material and contact the carrier immediately.
machine to its permanent location.
the feet. Level the machine front-to-back and side-to-side.
4. Remove the two dishracks and pressure gauge from the interior of the machine. Install
the pressure gauge in the upper fill piping of the dishwasher in the petcock provided.
NOTE:
The installation of your machine must meet local health codes.
Changing from Straight-through to Corner Operation
Your door-type dishwasher was specified to the factory as a straight-through conf iguration
or corner configuration. Your machine can be converted from straight-through to corner or
from corner to straight-through. Contact factory for instructions on changing the operation
of your dishwasher.
Electrical Connections
WARNING:
Electrical and grounding connections must comply with the National Electrical Code
and/or Local 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 stamped on the MACHINE ELECTRICAL CONNECTION
PLATE located inside the top mounted control cabinet before connecting to the
incoming service at a fused disconnect switch.
2. Motor rotation was set at the factory. Check the rotation of the motor shaft (CW when
viewed from rear of motor). 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
4
Page 15
Electrical Connections (cont’d)
the main electrical connection block. For single phase machines, motor rotation is
changed at the motor connection plate on the rear of the single phase motor.
3. A knock-out is provided at the rear of the top mounted control cabinet for the electrical
service connection. A single source electrical connection has been provided. A fused
disconnect switch or circuit breaker (supplied by others) is required to protect each
power supply circuit.
Plumbing Connections
CAUTION:
Plumbing connections must comply with local sanitary and plumbing codes.
Water Connections
INSTALLATION
1. Connect the hot water supply using a 3/4” NPT connection. The connection point is
located behind the lower front panel of the dishwasher. Supply enters from underneath
the machine.
8-7/8"
[225 mm]
FLOOR
Figure 1Figure 2
D-HBD-H1, D-LF
3/4” NPT Water Supply Connection3/4” NPT Water Supply Connection
Behind Front PanelBehind Front Panel
8-7/8"
[225 mm]
FLOOR
2. Minimum incoming water supply temperature requirements are listed below:
D-HB with built-in 40°F/23°C rise electric booster (Minimum 140°F/60°C)
(Min./Max. flow pressure 20 – 22 psi/138 Kpa)
D-HB with built-in 70°F/39°C rise electric booster (Minimum 110°F/43°C)
(Min./Max. flow pressure 20 – 22 psi/138 Kpa)
3. A manual shut-off valve for steam and water (supplied by others) should be installed in
4. A 3/4" Pressure Regulating Valve (PRV), should be installed on the incoming water
Drain Connections
1. Models D-HB, D-H1, and D-LF are GRAVITY DRAIN machines equipped with a
supply line to allow for servicing of the machine. The shut-off valve should be the same
size or larger than the supply line.
supply line if water flow pressure exceeds 20 – 22 psi/138 Kpa.
A PRV is standard equipment on Model D-HB.
A PRV is not standard equipment on Models D-H1 and D-LF.
The PRV may be obtained locally or direct from Champion.
2" hose connection point.
• Drain height for ALL MODELS must not exceed 8-7/8" [225 mm] above floor level.
WARNING:
Connection of the machine to a drain line higher than the machine drain height will
prevent the machine from draining properly.
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.
6
Page 17
Chemical Connections
NOTE:
Consult a qualified chemical supplier for your chemical needs.
Models D-HB, D-H1 and D-LF
Refer to Figure 3.
1. Labeled chemical signal connection points are provided inside the control cabinet for
chemical dispensing equipment (supplied by others).
5
6
CAUTION
120V SUPPLY
DISPENSERS
ONLY
RINSE/SANI
COMMON
RETURN
DETERGENT
12
17
18
19
15
2
2
10
Signal connection points include:
• Detergent signal 120VAC
between Wire #10 and Wire #2
(1 AMP MAX AMP LOAD)
• Rinse Aid/Sanitizer signal 120VAC
between Wire #15 and Wire #2
(1 AMP MAX AMP LOAD)
INSTALLATION
Figure 3
D-HB, D-H1, D-LF
Chemical Connection Points
Left Side Interior of Control Cabinet
Detergent
Refer to Figure 4.
1. Two removable black plugs, located on the rear and left side of the wash tank are
provided as detergent equipment insertion points.
1/2" Black Removable Plug
Detergent Injection Point
Wash Tank Detergent Equipment
1/2" Black Removable Plug
Detergent Sensor Point
Figure 4
D-HB, D-H1, D-LF
Insertion Points
7
Page 18
INSTALLATION
Chemical Connections (cont’d)
Detergent (cont’d)
2. Detergent may be added manually if dishwasher is not equipped with dispensing
Rinse Aid/Sanitizer
Model D-HB and D-H1
Refer to Figure 5.
1. A rinse aid injection point is provided via a 1/4" NPT plug located in the final rinse
2. Use a liquid rinse aid.
equipment. Consult your chemical supplier for recommended amounts.
piping. The plug is located in a cross fitting on the outlet side of the vacuum breaker.
The vacuum breaker is located behind the control cabinet at the top of the machine.
Figure 5
Rinse Aid Injection Point
D-HB, D-H1 Only
NOTE:
Models D-HB and D-H1 do not require sanitizer.
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Page 19
Chemical Connections (cont’d)
Rinse Aid/Sanitizer (cont’d)
Model D-LF
Refer to Figure 6.
1. A rinse aid injection point is provided via a 1/4" NPT plug located in the final rinse
piping. The plug is located in a cross fitting on the outlet side of the vacuum breaker.
The vacuum breaker is located behind the control cabinet at the top of the machine.
2. Use a liquid rinse aid.
3. A sanitizer injection point is provided via a 1/8" NPT plug located in the final rinse
piping. The plug is located in a cross fitting on the outlet side of the vacuum breaker.
The vacuum breaker is located behind the control cabinet at the top of the machine.
4. Use a sodium hypochlorite (Chlorine) based sanitizer at a minimum concentration of
50PPM in the final rinse. Use chlorine test papers to verify and monitor the 50PPM
chlorine level.
INSTALLATION
Figure 6
D-LF
Rinse Aid/Sanitizer Injection Points
WARNING:
Never premix rinse aid with the sanitizing agent. Mixing may cause hazardous gases
to form.
CAUTION:
Some metal, including silver, aluminum, and pewter are attacked by sodium
hypochlorite (chlorine sanitizer). Avoid cleaning these metals in a D-LF dishwasher.
9
Page 20
INITIAL START-UP
INITIAL START-UP
After plumbing and electrical connections are completed, follow the steps below to place your
machine in service.
Model D-HB, D-H1 and D-LF
Refer to Figures 7 and 8 below.
1. Remove any foreign material from inside the machine. Make sure scrap screens are in
place.
2. Make sure wash and rinse arms are installed correctly.
3. Close the Door.
4. Turn the water and main power sources to the dishwasher ON.
5. Flip the Power switch to the ON position. The “power on” light will illuminate and the
machine will automatically fill with water.
6. Check the machine for leaks.
7. Push the Green Start Button to check automatic cycle.
8. Check pump motor rotation. Rotation is CW when viewed from rear of motor.
9. If machine checks okay, flip the power switch to OFF and machine will drain for
ten minutes.
Main power switch
circuit breaker
Green pushbutton
start switch
POWER
ON
OFF
START
WARNING!
TURN OFF POWER BEFORE
SERVICING MACHINE
CYCLE
IN
Figure 7
Operator Controls
Top Mounted Control Cabinet
Green in cycle lite
Champion
Temperature Gauges
POWER
ON
Pressure gauge
WASHRINSE
10
OFF
Figure 8
Drain Assembly
Page 21
OPERATION
Model D-HB, D-H1 and D-LF
1. Close the door and flip power switch ONPower light illuminates. Drain valve closes.
Tank fills automatically and tank heat
comes on.
2. Monitor wash tank temperature gaugeWait for temperature reading to reach
Min. 150°F/66°C (D-HB, D-H1 Only)
Temperature reading must be
Min. 120°F-140°F/49°C-60°C Optimum (For
D-LF Only)
3. Prescrap and load ware into rackPlace dishes edgewise in peg rack, cups and
bowls upside down in flat rack, and
silverware spread evenly in single layer in
flat rack.
OPERATION
4. Open door, insert rack
5. Close door, Push Green start buttonGreen cycle light will illuminate. Automatic
cycle begins.
Machine washes for 40 sec., then pauses for
1 sec.
6. During Final Rinse monitor pressureMachine final rinses for 10 sec. Pressure
gauge and final rinse temperature gauge
reading must read between 20 – 22 PSI.
Temperature gauge must read
180 – 195°F/82 – 91°C (D-HB, D-H1 Only)
Min. 120° – 140°F/49°C – 60°C Optimum
(D-LF Only)
8. Open door, remove clean rackInsert another rack of soiled ware.
9. After each meal period or every twoTurn power switch to OFF position and
hours operationmachine will drain for ten minutes. Flush
interior and clean scrap screens and pump
intake strainer. Check spray arms and clean
if necessary. Flip power switch ON and OFF
to drain remaining water repeat as necessary.
NOTE:
Opening the door at any time during the cycle will stop the machine.
Closing the door and pushing the Green start button will resume the cycle where it
left off.
11
Page 22
MAINTENANCE
MAINTENANCE
Cleaning your machine is the best maintenance that you can provide. Components that are not
regularly flushed and cleaned do not perform well.
The Maintenance intervals shown in the following schedules are the minimum requirements
necessary for the proper performance of your machine. Maintenance intervals should be
shortened whenever your machine is faced with abnormal working conditions, hard water, or
multiple shift operations.
Maintenance Schedule
CLEANING
• Every 2 Hours or After Each Meal Period
Model D-HB, D-H1, and D-LF
1. Flip the power switch OFF.
2. Machine drain valve will open for 10 minutes automatically.
3. Flush tank interior with fresh water.
4. Remove and clean the scrap screens. Clean the pump intake screen.
5. Inspect the spray arm nozzles and rinse nozzles. Clean if necessary.
6. Close door, flip power switch ON to refill machine.
• Every 8 Hours or at the End of the Day
Model D-HB
1. Flip the power switch OFF.
2. Machine drain valve will open for 10 minutes automatically.
3. Flush tank interior with fresh water.
4. Remove and clean the scrap screens. Clean the pump intake screen.
5. Remove the spray arms.
6. Clean and inspect the spray arm bearings.
, D-H1, and D-LF
12
7. Flush the wash arm and rinse arm assemblies and nozzles.
8. Back flush the scrap screens and pump intake strainer.
9. Flip power switch ON then OFF to open drain valve for 10 minutes.
10. Reassemble the machine. Leave the door open to aid overnight drying.
CAUTION:
DO NOT LEAVE WATER IN WASH TANK OVERNIGHT
Page 23
MAINTENANCE
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.
WARNING:
Deliming solutions or other acids must not come in contact with household bleach
(sodium hypochlorite) or any chemicals containing chlorine, iodine, bromine, or
fluorine. Mixing will cause hazardous gases to form.
Skin contact with deliming solutions can cause severe irritation and possible chemical
burns. Consult your chemical supplier for specific safety precautions.
DELIMING PROCESS
Model D-HB
1. Remove all dishes from machine.
2. Remove any chemical pick-up tubes from their containers.
3. Place each tube in a container of fresh water and prime the chemical lines for several
4. Turn power switch to OFF position to drain machine for ten minutes, return power
5. Spray interior walls with delimimg solution and let sit for 5 or 10 minutes depending on
6. Push the Green start button and run an automatic cycle.
7. Repeat Steps 3-4 if necessary.
8. Repeat Step 4.
9. Refill the machine and run a complete cycle two additional times. Drain and refill the
, D-H1, and D-LF
minutes to thoroughly flush chemical from the lines. Leave pick-up tubes out of their
containers.
switch to ON position to refill with fresh water.
amount of build-up. Add deliming solution to wash tank. Do not let chemicals sit for
longer than 15 minutes.
machine after each cycle to thoroughly flush any deliming solution from the interior of
the machine.
10. Flip the power switch to OFF.
11. Machine drain valve will open for 10 minutes to drain machine completely.
12. Deliming is complete.
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Page 24
MAINTENANCE
OPERATION CHECKS
• Daily
1. Check temperature gauges for proper readings.
2. Check pressure gauge for proper reading (D-H1, D-HB ONLY).
3. Check for leaks.
4. Check chemical supplies and refill as necessary.
• Weekly
1. Inspect all water lines for leaks.
2. Clean all detergent residue from the exterior of the machine.
3. Check the drains for leaks.
4. Clean accumulated mineral deposits from the tank heating elements
5. Check that float switch moves freely.
TROUBLESHOOTING
Before determining any specific cause of a breakdown or abnormal operation on your
dishwasher, check that:
Checklist
1. Main power and water supply are turned on to the machine
2. All switches are ON
3. Wash pipe and rinse nozzles are clean
4. Scrap screen(s) are properly positioned
5. Spray pipes are in their proper positions
6. Doors are fully closed
7. Thermostat(s) are at their correct setting
8. Sanitizer, detergent, and rinse additive dispensers are adequately filled.
14
9. Drain valve/timer problems see Appendix D for trouble shooting.
If a problem still exists, use the following for troubleshooting.
Page 25
TROUBLESHOOTING
CONDITIONCAUSESOLUTION
Machine will not startDoor not closed . . . . . . . . . . . . . . . . . Make sure doors are fully closed
Low or no waterMain water supply is turned off . . . . . Turn on house water supply
Continuous water fillingStuck or defective float . . . . . . . . . . . Check floats and clean
Any motor not runningOverload protector tripped . . . . . . . . . Reset overload in control box
Wash tank water Incoming water temperature
temperature is low at machine too low . . . . . . . . . . . . . . Raise temperature to:
This Basic Service section does not cover all possible repair procedures. If you require
additional service support, you may call your local service company or:
Champion National ServiceIn Canada
1-800-858-44771-800-263-5798
Please have the Model and Serial Number of the machine ready when you call.
ELECTRICAL SERVICE
WARNING:
Disconnect Power at main disconnect switch before removing lower panels. Removing
lower panels exposes live open electrical wiring (not contained in conduit).
Always replace panels after completing service or repairs. Do not operate the
dishwasher with panels removed for anything other than service repair operation.
NOTE:
DO NOT USE CHASSIS GROUND WHEN PERFORMING VOLTAGE CHECKS.
Doing so will result in false and inaccurate readings.
PERFORM VOLTAGE CHECKS BY READING FROM THE HOT SIDE OF
THE LINE AND NEUTRAL (any #2 or white wire).
WARNING:
USE EXTREME CAUTION when performing tests on energized circuits.
WARNING:
When repairing a circuit, disconnect the power at the main service disconnect switch
and place a tag at the disconnect switch to indicate that work is being performed on the
circuit.
Troubleshooting
Schematics
Champion 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. Disregard any options that
appear on the schematics which are not a part of your machine.
16
Page 27
Fuses
Refer to Figure 9.
There are two fuse blocks, located in the center of
the main control cabinet. The (A) fuses protect the
main control transformer. The (B) fuses protect the
wash tank heater circuit. Fuses are marked FU on the
electrical schematic. Booster heater circuits
(D-HB only) are not fused.
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.
DETERMINE THE CAUSE OF THE OVERLOAD.
BASIC SERVICE
B
A
Figure 9
Fuses
(Three phase shown)
Motor Overloads
The wash pump motor has an overload to protect it from line voltage electrical overloads.
The overload disconnects 120VAC power to the motor contactor coil.
Refer to Figure 10.
Note the Switch Lever on the Overload.
If the switch lever is off with the “0” showing then the overload has tripped.
To Reset the Motor Overload:
Switch Lever
Flip the overload switch to the On position. A “1” should be
visible on the switch lever.
To Replace a Motor Overload:
Disconnect the wires to the overload. Release the mounting
catch on the front side of the overload. Push forward and lift
out. Snap the new overload into place and reconnect the wires.
To adjust the overload setting:
The screwdriver in Figure 10 is positioned to adjust the
motor overload AMP setting. Read the full load amps
(FLA) motor amps on the motor nameplate. Turn setting
to match nameplate.
Solid State D-HB, D-H1, and D-LF
Operating Instructions
Automatic Operation
Figure 10
Motor Overload
1. Check that drain is closed and screens are in place.
2. Turn on main power to the machine.
3. Flip machine control panel power switch to ON.
4. Close doors.*
*Machine pauses 4 seconds to check water level.
5. Machine fills for 110 seconds if float is down.
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Page 28
BASIC SERVICE
ELECTRICAL SERVICE (cont’d)
6. Run machine through several cycles or wait 10 minutes for temperature to stabilize.
7. Open door, insert rack of dishes.
8. Close doors. Push the GREEN push button to start cycle.
The following procedures are for determining whether or not the timer circuit board itself
is faulty.
In this part —
oduction
• Checking the general condition of the circuit board.
• Testing inputs.
• Testing outputs.
Special Tools —
• A voltmeter capable of reading DC and AC volts.
1.2 Checking General Condition
Before testing the inputs and outputs, you should first check that the board is receiving power.
Turn on the power switch to the unit (do not start the unit, just turn ON power to the unit). If red
“POWER” LED on board is illuminated, go directly to “1.3 Testing Board Inputs.” When LED
is not illuminated, then check that the following conditions are true:
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.
The Fuse (F1)
• Verify that the circuit board fuse (F1) is good.
If not replace it.
Red “POWER” LED
• Verify that the red “POWER” LED is illuminated.
If it is not, and the previous two conditions are true, then the board is bad and should
be replaced.
18
1.3 Testing Board Inputs
After you have verified that the circuit board is receiving power (as
explained above), then test the board inputs. There are 4 board inputs:
• Start Switch• Door Safety Switch
• Float Switch• Extended Wash (not used on this Model)
Perform the following steps to test a board input:
1. Set the voltmeter to measure DC volts.
Page 29
BASIC SERVICE
2. Place the NEGATIVE (Black) test probe on the “HOT” terminal:
• T2, marked “H”.
3. Place the POSITIVE (Red) test probe on the input terminal to be tested:
• T7, marked “START SW” (for the Start Switch).
• T8, marked “DOOR SW” (for the Door Safety Switch).
• T9, marked “FLOAT SW” (for the Float Switch).
4. Check the results on the voltmeter:
• If switch is opened – the meter should read between 4.7 to 5.3 DC volts.
• If switch is closed – the meter should read between 0 to 1 DC volts.
esting Board Outputs
1.4 T
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. Set the voltmeter to measure AC volts.
2. Place the NEGATIVE (Black) test probe on the “NEUTRAL” terminal:
• T1, marked “N”.
3. Place the POSITIVE (Red) test probe on the output terminal to be tested:
• T3, marked “WASH OUTPUT” (for the Wash Cycle).
• T4, marked “RINSE OUTPUT” (for the Rinse Cycle).
• T5, marked “HEATERS OUTPUT” (for the Water Heater).
• T6, marked “LAMP OUTPUT” (for the In-Cycle Lamp indicator).
4. Check the results on the voltmeter for the terminal you are testing:
• For T3 – the meter should read 120 VAC whenever the unit is in cycle and the
“WASH” LED is illuminated on the circuit board.
• For T4 – the meter should read 120 VAC whenever the unit is in a fill or rinse mode and
the corresponding “FILL” or “RINSE” LED is illuminated on the circuit board.
• For T5 – the meter should read 120 VAC whenever the power switch is on and the wash
tank is full (i.e., the float switch is up).
• For T6 – the meter should read 120 VAC whenever the machine is in cycle.
F1
H
T2
N
T1
START SW.
T7
DOOR SW.
T8
FLOAT SW.
T9
EXT. WASH
T10
JB3
L2
FILLRINSEWASH
U1
L3L4
POWER
L1
JB1
JB2
Figure 11
Solid State Control Board (112676 Shown)
WASH
OUTPUT
T3
RINSE
OUTPUT
T4
HEATERS
OUTPUT
T5
LAMP
OUTPUT
T6
19
Page 30
BASIC SERVICE
Models D-HB, D-H1, and D-LF use a float switch and circuit
board to control tank fill and tank heat.
For Model D-HB 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 seconds to fill the tank.
2. The float switch ball rises; its normally open contacts close.
The fill circuit times out; the f ill solenoid de-energizes, and
the tank heat and booster heat energize.
3. If water level drops below the float level, the float switch
ball moves down; heat de-energizes. The fill solenoid
energizes and the fill cycle runs for a minimum of 110
seconds to refill the tank.
4. If the tank is not full of water at the end of the 110-second fill cycle , then the machine
will cycle again. When the float switch is satisfied, the fill cycle stops after completing
its 110-second cycle.
5. Refer to the float switch troubleshooting chart (Fig.13) below, for a quick guide to
evaluating float switch problems.
Figure 12
Float Switch
Wash
Tank Fills Constantly
Is Tank Full
of Water?
YES
Is the Float
Ball Up?
YES
Is Heat ON
when called
for?
YES
Check
Solenoid
Valve
NO
NO
NO
Check
Drain
Clean
Float
Assy
Replace
Float
System
Checks
Figure 13
Float Switch
Troubleshooting Chart
20
Page 31
BASIC SERVICE
1L1
1L2
1L1
1L2
1L3
1L1
1L2
1L3
1L1
1L2
1L3
1L1
1L2
1L1
1L2
1L3
1L1
1L2
1L3
1L1
1L2
1L3
1L1
1L2
1L1
1L2
1L3
1L1
1L2
1L3
1L1
1L2
1L3
1L2
1L1
1L1
1L2
1L3
1L1
1L2
1L3
1L1
1L2
1L3
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. Match your element coil to Configuration A, B, C, or D.
Step 3. Rotate your element coils to match the correct configuration.
Step 4. Turn the element over and match your element to the correct terminal configuration.
Step 5. Install terminal jumpers according to the illustration for your voltage requirement.
Step 6. Install the element and make your line connections 1L1, 1L2, or 1L3 per the illustration.
Configuration A
Booster tank element
View of calrod coils
Configuration B
Booster tank element
View of calrod coils
Configuration C
Booster tank element
View of calrod coils
Terminal Connections view of element
208V/1 Phase208-240V/3 Phase
Delta Connection
Terminal Connections view of element
208V/1 Phase208-240V/3 Phase
Delta Connection
Terminal Connections view of element
480V/3 Phase
575V/3 Phase
Delta Connection
480V/3 Phase
575V/3 Phase
Delta Connection
208-240V/3 Phase
Wye Connection for
380-415V/3 Phase
208-240V/3 Phase
Wye Connection for
380-415V/3 Phase
Configuration D
208V/1 Phase208-240V/3 Phase
Delta Connection
Terminal Connections view of element
480V/3 Phase
575V/3 Phase
Delta Connection
208-240V/3 Phase
Wye Connection for
380-415V/3 Phase
Wash tank element
View of calrod coils
208V/1 Phase208-240V/3 Phase
Delta Connection
480V/3 Phase
575V/3 Phase
Delta Connection
208-240V/3 Phase
Wye Connection for
380-415V/3 Phase
21
Page 32
L1
L2
4
2
8
J
LINE
LINE
3
BASIC SERVICE
Motor Connections
1. Models D-HB, D-H1, and D-LF 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. For single phase machines,
motor rotation is changed at the motor connection plate on the rear of the single phase
motor (if necessary).
Refer to Figure 14 for the proper wiring of the pump motor for single and three phase voltages.
Single Phase - Low Voltage
115V
208-240V
Three Phase - Low Voltage
654
987
321
LINE
Figure 14
Pump Motor Wiring Diagrams
480V
Three Phase - High Voltage
654
987
321
LINE
Single Phase - High Voltage
LINE
J
2
208-240V
LINE
3
L2
L1
4
8
575V Only
Three Phase
321
LINE
22
Page 33
REPLACEMENT PARTS
MECHANICAL SERVICE
Pump Seal Replacement
1. Disconnect the power to the machine at the main breaker panel or fuse box.
2. Drain the machine.
3. Remove the front and side panels.
4. Remove drain plug on the pump volute and drain the pump.
5. Remove the pump hoses.
6. Disconnect the wires to the motor at the motor junction box.
7. Unbolt motor from machine base and remove the pump/motor assembly.
8. Remove bolts on volute and carefully remove from the pump flange.
9. Lock the motor shaft with a wrench or pliers. The back of motor shaft is square.
10. Turn the impeller counter-clockwise to remove from shaft (right hand threads).
11. Remove the old seal and discard.
12. Check seal seat in the pump flange and clean thoroughly.
13. Press rubber seal/ceramic portion of seal assembly into the pump flange. Use a water
soluble lubricant. Be careful to keep the ceramic clean.
14. Install the rotating part of the seal on the shaft with the graphite surface toward the
ceramic. Use a water soluble lubricant on the rubber seal part only (not the graphite).
15. Reinstall impeller and new flange gasket. Reinstall bolts.
16. Reinstall the pump/motor assembly and reconnect the pump hoses.
17. Fill the dishwasher with water.
18. Check motor rotation by bump starting motor. Correct motor shaft rotation is clockwise
when viewing motor from the rear.
*Part number 0707453 (D-HB, D-H1) and 0708899 (D-LF) are no longer available
as a complete rinse arm assembly. Replacement nozzles and bearings are still
available for those assemblies. To replace the complete rinse arm assembly order
part number 414111.
Models D-HB, D-H1, and D-LF uses a drain circuit consisting of a 3cr relay, 10 minute timer,
and a drain valve.
OPERATION:
1) When the power switch is pushed to the OFF posistion, the 3CR relay coil is then
energized, closing the 3CR contacts.
2) Drain timer now is powered from the 3CR relay, which opens the drain valve
for ten (10) minutes.
3) When the timer times out (10 minutes), the drain valve closes and machine has
completed it's drain cycle.
NOTE: Flip the power switch on the machine to ON then OFF position to open the drain
for an additional drain cycle. Repeat this step as necessary.
1T
1
2
3
3CR
56
DV
PCB
line
load
3CR
ON
OFF
POWER
APPENDIX A
60
Page 71
ELECTRICAL SCHEMATICS
ELECTRICAL
SCHEMATICS
61
Page 72
HEATERS
OUTPUT
LEDs
WASH
EXTENDED
WASH
T10
RINSEFILL
T9
FLOAT
SWITCH
LAMP
OUTPUT
JB2
T6
T5
FUSE 1A
T7
T8
DOOR
SWITCH
START
SWITCH
T2
T
F
WASH
OUTPUT
RINSE
OUTPUT
JB1
JB3
POWER
LED
T4
T3
5 X 20 MM
FAST ACTING
CLOSED JUMPER SHOWN FROM SIDE
PRINTED CIRCUIT BOARD
BLACK JUMPER SHOWN CLOSED.
LIFT & REMOVE TO OPEN.
WHITE BASE
DLF ALL 113597 REVG OPEN CLOSED OPEN
DH1, DHB D3858 - UP 113597 REVG CLOSED CLOSED OPEN
DH1, DHB UP TO D3857 112676 REVC OPEN CLOSED OPEN
MODEL SERIAL NUMBER PART NUMBER JB1 JB2 JB3
! ATTENTION - VERY IMPORTANT ! - VERIFY CIRCUIT BOARD
PART NUMBER AND JUMPER POSITION SETTINGS (JB1, JB2, JB3) PER
MACHINE MODEL AND SERIAL NUMBER AS INDICATED IN TABLE
BELOW. IMPROPER JUMPER SETTINGS MAY CAUSE ERRATIC
OPERATION.
MACHINE BOARD JUMPER SETTINGS
PER LOCAL ELECTRICAL CODE
GND
TSHC
TSBC
BC1
HC1
DS2
1M
BCHL
RWV
T1
DETERG.
SIGNAL
RINSE
SIGNAL
1MOL
T1 NOT USED WITH
115V LINE SUPPLY
SEE NOTE 1
TSHCWASH TANK THERMOSTAT
DH1/B-E - STEAM/ELECTRIC - 1 & 3 PHASE
CHAMPION DOOR MACHINE
701650I
NONE
J.NEWTON
20MAY99
1
1
FSW
DOORS CLOSED
TANKS EMPTY
POWER OFF
DIAGRAM STATE
END OF CYCLE
LT1
6
DS1
1MTR
28
1M
27
29
28
27
ELECTRIC TANK HEAT IF USED
FUHHC1
4.7KW
FUHHC1
HC1FUH
BC1
BC1
ELECTRIC BOOSTER HEAT IF USED (SEE NOTE 3B)
BC1
1
2
2
2
4
5
10
13
16
22
1719
2120
14
8
3033
31
34
32
35
34
31
3033
32
31
3033
34
35
L136
37
L2
L1
L2
L3
38
37
36
36
37
38L3
L2
L1
L1 L2 L3
L1 L2 L3
1M1MOL
1MTR
(IF USED)
FUTFUT
4039
ON SINGLE PHASE
MACHINES OMIT L3.
ON SINGLE PHASE
MACHINES OMIT L3.
L3
L2
L1
L1
L2
L3
L3
L1
L2
L2
L1
L1
L3
L2
L1
L2
2
SEE NOTE 2
1CR
1CRA
9
1CRB
1CRC
12
15
BOOSTER TANK THERMOSTATTSBC
LINE:120V TRANSFORMERT1
RINSE WATER VALVERWV
POWER SWITCH CIRCUIT BREAKERPCB
CYCLE LIGHTLT1
CYCLE SELECT JUMPERJB3
CYCLE SELECT JUMPERJB2
RINSE TIME SELECT JUMPERJB1
TANK HEAT CONTACTOR OR STEAM VALVE
HC1
TRANSFORMER FUSESFUT
TANK HEAT FUSESFUH
FLOAT SWITCHFSW
TIMER BOARD FUSEF1
DOOR SAFETY SWITCH, SIDE DOORSDS2
DOOR SAFETY SWITCH, FRONT DOORDS1
BOOSTER TANK HIGH LIMIT (ELECTRIC HEAT ONLY)
BCHL
BOOSTER TANK CONTACTOR OR STEAM VALVE
BC1
WASH MOTOR OVERLOAD1MOL
WASH MOTOR CONTACTOR1M
DOOR SWITCH RELAY1CR
1MTRWASH MOTOR
2CR
1M
2CRA
23
41
24
25
24
25
26
START
ELECTRIC HEAT ONLY
DV
DVDRAIN VALVE
120V FAN SIGNAL
TO CONTACTOR COIL
SUPPLIED BY OTHERS
IF USED
43
4
LOAD
LINE
PCB
MAIN POWER SWITCHMPS
2CRRINSE AID SIGNAL RELAY
TO TEST INPUTS T7, T8, AND T9 A METER CAPABLE OF
READING DC VOLTAGES MUST BE USED.
1.) SET METER TO READ DC VOLTAGE
2.) PLACE BLACK LEAD TO T2
3.) PLACE RED LEAD TO TERMINAL BEING TESTED
i.e. PLACE RED LEAD TO T8 TO TEST DOOR SW.
4.) AN OPEN SWITCH WILL READ 4.7-5.3VDC
A CLOSED SWITCH WILL READ 0-1VDC
1MOL
50
50
123
IT
3CR
3CR
55
56
POWER ON RELAY3CR
IT
INTERVAL TIMER
ADDED RELAY DIAGRAMC
REVISED SINGLE PHASE MOTOR OVERLOAD CIRCUIT
2DEC99
JCN
D
9AUG00
JCN
JCN
30MAR01
ADDED INTERVAL TIMER AND 3CR
E
10 MINUTE
4.7KW
4.7KW
HCHL
18
I
CORRECTED BOARD# 'S. WAS 113457 & 112676
2/4/04
HCHL
TANK HEAT HIGH LIMIT
4
SEE NOTE 3A
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
40.
NOTE 2: USED ON MACHINES WITH INDEPENDENT FRONT
DOOR OPTION.
G
ADD JUMPER / SN INFORMATION. REVISE NOTE 3.
1NOV 02
MJM
4
2
ASARC SUPPRESSOR
AS
H
ADDED ARC SUPPRESSORS
13MAR03
JAM
F
CHANGED TANK HEAT KW AND ADDED HEAT LIMIT
8/30/02
WB
WB
BY
DATE
DESCRIPTIONREV.
B
REV.
The Dishwashing Machine Specialists
REV.DESCRIPTION
DATE
BY
CUSTOMER TO SUPPLY RATED VOLTAGE/PHASE/Hz,
AS SPECIFIED PER ORDER,TO DISCONNECT SWITCH.
ALL POWER SUPPLIED TO EACH CONNECTION POINT
MUST COMPLY WITH ALL LOCAL ELECTRIC CODES.
SCALEDR.BY
DATESHEET
OF
NO
NC
COIL
COMMON
RELAY
AS
AS
I
I
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