D-HBT, D-HBTC
High Temperature
Extended Hood
with Built-in Booster
D-H1T, D-H1TC
High Temperature
Extended Hood
without Built-in Booster
July, 1998
P. O. Box 4149
Winston-Salem, North Carolina 27115-4149
336/661-1556 Fax: 336/661-1660
Machine Serial No.
ManualP/N 112724Rev. A
2674 N. Service Road
Jordan Station, Ontario, Canada LOR 1SO
905/562-4195 Fax: 905/562-4618
Champion Industries, Inc.
Complete the information below so it will be available for quick reference.
Model NumberSerial Number
Voltage and Phase
Champion Parts DistributorPhone
(if applicable)
Champion Service AgencyPhone
Champion Service:
Champion, US
Phone:1(336) 661-1556
1(800) 858-4477
Fax:1(336) 661-1660
Champion, Canada
Phone:1(905) 562-4195
1(800) 263-5798
Fax:1(905) 562-4618
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
Model & Serial Number
located on the front panel.
Champion Industries, Inc., 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 Model Series CG] 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 Model Series CG, 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,
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.
tampering, improper installation, or failure to follow maintenance and operation procedures.
DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. CHAMPION’S WARRANTY
IS ONLY TO THE EXTENT REFLECTED ABOVE. CHAMPION INDUSTRIES, INC. 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 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.
4
INTRODUCTION
Welcome to Champion...
and thank you for allowing us to take care of
your dishwashing needs.
This manual covers the door-type dishwasher,
Model D-HBT, D-H1T, D-HBTC, D-H1TC.
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 Cleaning Instructions
• Troubleshooting Guide
• Basic Service Information
• Replacement Parts Lists
• Electrical Schematics
INTRODUCTION
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.
For your protection, factory authorized parts
should always be used for repairs.
Replacement parts may be ordered directly
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
descriptions and quantity.
5
GENERAL
Model Numbers
D-HBT, D-HBTC, D-H1T, D-H1TC
The D-HBT model is a high temperature
(180°F/82°C rinse) sanitizing model with
booster.
The D-H1T, D-H1TC models are high temperature (180°F/82°C rinse) sanitizing models.
Standard Equipment includes:
D-HBT, D-HBTC, D-H1T, DH1TC
• Automatic tank fill and start
• Adjustable cycle selector
• Built-in electric booster heater (D-HBT only)
• Field convertible to corner model
• Electric tank heat
• Low-water tank heat protection
• 2-hp drip-proof pump motor
• Door safety switch
• Door activated drain
Options
• 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)
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.
POWER
CYCLE
RINSE PRESSURE
WASH
Champion
WARNING!
TURN OFF POWER BEFORE
SERVICING MACHINE
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
8
INSTALLATION
This page
intentionally
left blank
9
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.
Electrical knock-out
lower rear corner
Figure 2
Electrical Connection Location
10
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.
INSTALLATION
Figure 3
Hinged Control Panel
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.
Electrical Power Connection
Figure 4
Main Terminal Block
11
INSTALLATION
INSTALLATION (Cont.)
Plumbing Connections
NOTE:
Plumbing connections must comply with
all applicable sanitary and plumbing
codes.
Water Connections
1. All D-HB/H1T series dishwashers require a
single, hot water supply.
The hot water connection to all D-HB/H1T
series dishwashers is 3/4" NPT.
The connection is made from
underneath the dishwasher.
The following minimum water
temperatures are recommended:
D-HBT with built-in 40° rise electric
booster (Minimum 140°F/60°C)
(Min./Max. flow pressure
20-22 PSI/138-151.8 kPa)
D-HBT with built-in 70° rise electric
booster (Minimum 110°F/43°C)
(Min./Max. flow pressure
20-22 PSI/138-151.8 kPa)
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
D-HBT. A PRV is not standard equipment on
Models D-H1T.
Drain Connections
INSTALLATION
Refer to Fig. 7
1. All 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.
11" [280mm]
Above floor level
Figure 7
Drain Hose Connection
1-1/2" O.D.
(Max flow rate = 15 gal/min-56.8 liters/min)
CAUTION:
!
Exhaust air should not be vented into a
wall, ceiling, or concealed space of a
building. Condensation can cause
damage.
13
INSTALLATION
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 signal is limited
to a maximum load of 1 Amp.
Signal voltage is 115VAC.
COMMON
Figure 8
Chemical Dispenser
Signal
Terminal Block
Detergent Signal Connection Point
1 Amp Max Load/115VAC
Common Return
RINSE
DETERGENT
Rinse aid
Signal Connection Point
1 Amp Max load/115VAC
14
Figure 9
Chemical Signal
Connection Points
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.
INSTALLATION
Figure 10
Detergent Probe
Injection Points, 1/2"
Refer to Fig. 11
7.
D-HBT, D-H1T
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.
Models D-HBT and D-H1T do not
require sanitizer.
1/4" NPT Rinse aid
Injection Point
Figure 11
Rinse Aid Injection Point
(Top of Dishwasher)
15
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.
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
Install the Scrap Screens
and Drain-Overflow Assembly
Install scrap screens.
Make sure the door activated drain assembly
is in place. The drain is opened by manually
pulling up on the drain-overflow lever.
The drain closes when the doors are closed.
MAKE SURE DOORS
ARE FULLY CLOSED.
2
The controls are located
on the front of the dishwasher.
A- On/Off power switch
B- Power indicator Light
C- In cycle light
D- Wash cycle selector switch
E- Wash water
temperature gauge
F- Final rinse
pressure gauge
A
E
POWER
OFF
WASH
B
C
DOOR
WASH CYCLE
CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
RINSE PRESSURE
D
F
16
INITIAL START-UP (Cont.)
WASH
CYCLE
POWER
OFF
RINSE PRESSURE
WASH CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
INITIAL START-UP
3
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.
4
Note that the power indicator
light is illuminated.
POWER
OFF
WASH
CYCLE
RINSE PRESSURE
WASH CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
5
Check Wash
Water Temperature
The wash tank heater and
the (booster tank heater, D-HBT 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 (D-HBT, D-H1T).
Prescrap the dishes. Load ware into
the dishrack. Open the doors, insert the
rack into the dishwasher.
POWER
OFF
WASH
WASH CYCLE
CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
RINSE PRESSURE
17
INITIAL START-UP
INITIAL START-UP (Cont.)
6
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:
1 Minute Wash Cycle Setting
Wash=45 seconds
Dwell= 1 seconds
Final rinse=14 seconds
4 Minute Wash Cycle Setting
Wash=225 seconds (3 min 45 sec)
Dwell= 1 seconds
Final rinse=14 seconds
7
Note that the in-cycle light
is lit during the automatic
dishwasher cycle.
2 Minute Wash Cycle Setting
Wash=105 seconds (1 min 45 sec)
Dwell= 1 seconds
Final rinse=14 seconds
6 Minute Wash Cycle Setting
Wash=345 seconds (5 min 45 sec)
Dwell= 1 seconds
Final rinse=14 seconds
POWER
OFF
WASH CYCLE
CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
18
WASH
RINSE PRESSURE
INITIAL START-UP (Cont.)
8
Check Final Rinse
Water Temperature
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.
INITIAL START-UP
100
0
5
0
150
200
250
The final rinse water temperature should be a minimum of
180°F/82°C for (D-HBT, D-H1T).
The optimum final rinse temperature
for (D-HBT, D-H1T) is
180-195°F/82-91°C.
9
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.
POWER
OFF
WASH
WASH CYCLE
CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
RINSE PRESSURE
A pressure reducing valve (PRV) is
required if flow pressure exceeds
20-22 PSI/138-151.8 kPa.
19
INITIAL START-UP
INITIAL START-UP (Cont.)
10
The Wash Cycle Selector
Switch
The wash cycle selector switch provides
the option of choosing four different
dishwasher cycle times.
To select a cycle time —
Make sure power is on and the dishwasher
has completed its last cycle.
Turn the selector knob to the desired
time as indicated on the control panel.
POWER
OFF
WASH
CYCLE
RINSE PRESSURE
WASH CYCLE
1 MIN
2 MIN
4 MIN
6 MIN
Close the doors.
The dishwasher will begin the cycle automatically.
If the timed fill is activated due to a loss of water, the
cycle will stop. When the dishwasher is full the automatic cycle will resume where it left off.
The maximum total wash cycle time is 6 minutes.
For example: You can not select 4 minutes then
turn the switch to 6 minutes during the automatic
2 minute cycle to extend the total cycle to 10 minutes.
The dishwasher cycle times are listed below:
1 Minute Wash Cycle Setting
Wash=45 seconds
Dwell= 1 seconds
Final rinse=14 seconds
4 Minute Wash Cycle Setting
Wash=225 seconds (3 min 45 sec)
Dwell= 1 seconds
Final rinse=14 seconds
2 Minute Wash Cycle Setting
Wash=105 seconds (1 min 45 sec)
Dwell= 1 seconds
Final rinse=14 seconds
6 Minute Wash Cycle Setting
Wash=345 seconds (5 min 45 sec)
Dwell= 1 seconds
Final rinse=14 seconds
20
INITIAL START-UP
INITIAL START-UP (Cont.)
11
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.
12
Drain the dishwasher
Make sure the dishwasher
power switch is turned off.
Open the doors.
Drain the dishwasher
by pulling the door activated drain lever up
The door activated drain lever is located on
the inside left rear corner of the dishwasher.
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.
Clean the interior of the wash
tank of any foreign material.
Leave the doors open to air
dry the interior of the
dishwasher.
The initial start-up is complete.
21
OPERATION
OPERATION SUMMARY
ActionResult
1. Push the On/Off power switch “UP” to
the ON position. Dishwasher fills
automatically.
2. Wait approximately 10 minutes for the
wash tank heater to heat the water. Then,
check the reading on the wash water
temperature gauge.
3. Prescrap and load the ware into the
dishrack.
4. Open the doors.
Insert a dishrack of soiled ware.
Fully close the doors.
Opening the doors anytime during the
automatic cycle stops the dishwasher.
Closing the doors will resume the cycle
where it left off.
5. Check the final rinse temperature gauge
reading during the 14 second final rinse
cycle.
1. The power indicator light illuminates. The
wash tank heater (D-HBT/H1T) and the
(booster tank heater, D-HBT) begin to heat.
2. The wash water temperature gauge should
indicate a minimum of 150°F/66°C for
D-HBT, D-H1T.
3. Ware should be placed edgewise in the peg
rack. Cups and bowls should be placed upside
down in the flat rack. Silverware should be
spread evenly in a single layer in the flat rack.
4. In cycle light illuminates as the dishwasher
begins a selected automatic cycle.
The total cycle times are listed below:
1 minute = 45 second wash
2 minute = 1 minute 45 second wash
4 minute = 3 minute 45 second wash
6 minute = 5 minute 45 second wash
5. The final rinse temperature gauge should
indicate a minimum of 180°F/82°C for D-HBT/
D-H1T. The optimum final rinse temperature
range is between 180-195°F/82-90°C.
22
6. Check the incoming water pressure
during the 14 second final rinse cycle.
7. The selected automatic cycle ends.
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.
Lift the drain lever up. Clean the scrap
screens. Clean the dishwasher after each
meal period or every two hours of
operation.
6. The water pressure gauge should indicate a
flowing pressure of 20-22 PSI/138-151.8 kPa.
A pressure reducing valve (PRV) is required if
flow pressure exceeds 20-22 PSI/138-151.8 kPa.
7. The in cycle light goes out.
8. The selected automatic cycle begins again.
9. Dishwasher wash tank drains completely.
Periodic cleaning reduces detergent
consumption and improves washing results.
CLEANING
CLEANING
Cleaning your machine is the best maintenance that you can provide. Components that are not regularly
flushed and cleaned do not perform well.
The following schedules are the minimum requirements necessary for the proper performance of your
machine. 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.
Every 8 Hours or at the End of the Day
1. Drain the machine.
2. Flush interior with fresh water.
3. Clean scrap screens and pump intake screen.
4. Clean spray arms.
5. Thoroughly clean the exterior
of machine.
DO NOT HOSE DOWN
WITH WATER.
6. Reassemble the machine.
7. Leave doors open to aid in drying.
CAUTION:
!
Do not leave water in wash
tank overnight.
23
CLEANING
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-HBT and D-H1T
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 minutes
to thoroughly flush chemical from the lines. Leave pick-up tubes out of their containers.
4. Drain the machine and refill with fresh water.
5. Spray interior walls with deliming solution and let sit for 5 or 10 minutes depending on
amount of build-up. Add deliming solution to wash tank.
Do not let chemicals sit for longer than 15 minutes.
6. Close the doors to run an automatic cycle.
7. Repeat Steps 4-6 if necessary.
8. Lift the drain lever assembly and drain the machine.
9. Refill the machine and run a complete cycle two additional times. Drain and refill the machine after each cycle to thoroughly flush any deliming solution from the interior of the
machine.
24
10. Flip the power switch to OFF.
11. Drain machine.
12. Deliming is complete.
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 assembly is in place and seated
3. Wash and rinse nozzles are clean
4. Wash and rinse pipe assemblies are installed correctly
5. Scrap screens are properly positioned
6. Thermostat(s) are properly adjusted
7. Detergent and rinse additive dispensers are adequately filled
If a problem still exists, use the following table for troubleshooting
CONDITIONCAUSESOLUTION
Machine will not startDoors not closed ...................................Make sure doors are fully closed
Door safety switch faulty ......................Contact your service agency
TROUBLESHOOTING
Main switch off .....................................Check disconnect at main panel
Ware being improperly .........................Use proper racks. Do not
placed in rackoverload racks
Improperly cleaned ...............................Unclog wash sprays and rinse
equipmentnozzles to maintain proper
pressure and flow conditions.
Overflows must be open. Keep
wash water as clean as possible.
Heater elements .....................................Clean and delime
have soil/lime buildup
26
BASIC SERVICE
BASIC SERVICE
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 Service
USA: 1-800-858-4477
Canada: 1-800-263-5798
Please have the Model and Serial Number of the machine ready when you call.
ELECTRICAL SERVICE
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.
Tools
All electrical repairs can be made with: Standard set of hand tools
Volt/Ohm Meter (VOM)
Clip-on AC current tester
Circuit Tests
Use a clip-on AC current tester to check the motors and electric heaters.
Use a VOM to test line voltages and the 115VAC control circuit.
27
BASIC SERVICE
ELECTRICAL SERVICE (Cont.)
Fuses —
Refer to Fig. 12.
There are two fuse blocks. A 3 pole block
(A) is located in the main control cabinet.
The (A) fuses protect the wash tank heater
circuit. Booster heater circuits
(D-HBT only) are not fused. A 2 pole
fuse block is located on the machine base
to protect the control circuit.
To Replace a fuse:
Turn the dishwasher main power switch
off. Disconnect power to the machine at
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.
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 Fig. 13.
—
A
Figure 12
Wash tank heater fuses
Control Cabinet
Switch Lever
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:
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 Fig. 13 is positioned
to adjust the motor overload AMP setting.
Read the full load amps (FLA) motor amps on the motor
nameplate. Turn the setting to match the name plate.
Figure 13
Motor Overload
28
0
1
2
3
UP
4
5
6
Omron
H2C
6 M
ELECTRICAL SERVICE (Cont.)
Electromechanical Timers
D-HBT, D-H1T, models have two non-adjustable
timers. They are the 45 second main cycle timer
and the fill timer. The timers are mounted on the
swing-out control cabinet. Remove the lower
front panel to access the timers.
There are three adjustable timers located on the lower
right rear corner of the wash tank. These timers
control the 2, 4, and 6 minute wash cycle operations.
Remove the lower front and left side panel to access
the timers.
BASIC SERVICE
Main Cycle Timer
—
Refer to Fig. 14.
The main cycle timer controls the non-adjustable
45-second wash time. It also resets and connects
to the adjustable 2, 4, and 6 minute timers through
the wash cycle selector switch. The main cycle timer
also controls the 1 second dwell and the 14 second
final rinse portion of the total wash cycle time.
Fill Timer
—
Refer to Fig. 15.
The fill timer controls the dishwasher’s
fill operation. 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.
Adjustable Wash Cycle Timers
—
Refer to Fig. 16 and detail views to the right.
The adjustable cycle timers are preset for 2, 4, and
6 minutes at the factory. All the adjustable timers
are powered at the same time and run concurrently.
Each timer has an indicator lite (A) on the front.
The lite is “ON” when the timer is counting down.
Replacement timers are not preset. The installer
must set the time range (B) to “6M” for six minutes.
The timer dial (C) should be turned to match the
original timer setting. The Hertz selector (D) must
be set to match the supplied HZ, 50Hz or 60Hz.
The adjustable timers are interchangeable.
Figure 14
Main Cycle Timer
(45 second)
Figure 15
Fill Timer
A
B
C
Timer (Front)
5
4
6T4T2T
Figure 16
Cycle Timers (2, 4, and 6 minute)
3
2
50
60
6
7
1
8
D
Timer (Back)
29
BASIC SERVICE
1L1
1L2
1L3
1L1
1L2
1L3
ELECTRICAL SERVICE (Cont.)
Heater Element Wiring – Booster Tank and Wash Tank Heater Elements
Refer to the illustrations and follow the steps below to properly install terminal jumpers and to
make line power connections to a replacement element.
Step 1. Hold the element assembly with the calrod coils facing toward you.
Step 2. 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.
1. Models D-HBT and D-H1T 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 Fig. 18 for the proper wiring of the pump motor for single and three phase voltages.
Single Phase - Low Voltage
L1
3
4
L2
208-240V
Three Phase - Low Voltage
654
987
LINE
J
8
LINE
2
Figure 18
Pump Motor Wiring Diagrams
Three Phase - High Voltage
480V
Single Phase - High Voltage
LINE
J
2
LINE
3
L2
L1
4
8
575V Only
Three Phase
321
LINE
321
LINE
31
BASIC SERVICE
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. Remove the impeller retaining bolt and nut from center of impeller.
10. Lock the motor shaft with a wrench or pliers. The back of motor shaft is square.
11. Turn the impeller counter-clockwise to remove from shaft (right hand threads).
12. Remove the old seal and discard.
13. Check seal seat in the pump flange and clean thoroughly.
14. Press rubber seal/ceramic portion of seal assembly into the pump flange. Use a water
soluble lubricant. Be careful to keep the ceramic clean.
15. 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).
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.
20. Test run and check for leaks.
Water
Slinger
Backing Plate
Pump Flange
Backing Plate
Mtg. Nut
Impeller
Washer
Seal Assy.
Figure 19
Pump Seal Replacement
Nut
Gaskets
Bolt
(B)
Bolt
(A)
Volute
Plug
32
REPLACEMENT PARTS
REPLACEMENT
PARTS
33
REPLACEMENT PARTS
7
12
10
10
11
11
10
6
1
5
9
6
8
2
3
4
9
9
7
8
34
Figure 20 - D-HBT/D-H1T
Panels
REPLACEMENT PARTS
D-HBT
PANELS
Fig. 20Part
Item No.No.Part DescriptionQty.
1321929RH PANEL NO CUT OUT ................................................................1