Whirlpool DU800DWG User manual

I
CONSUMER SERVICES TECHNICAL
EDUCATION GROUP PRESENTS KD-10
JOB AID
Part No. 4322430
1998 DISHWASHERS
Servicing and Troubleshooting
MODELS
DU800DWG DU801DWG DU805DWG
DU810DWG DP840DWG DU840DWG
DU850DWG DU890DWG DU910PFG
DP920PFG DU920PFG GU940SCG
GU960SCG GU980SCG

II
INTRODUCTION
This Job Aid, “1998 DISHWASHERS, Servicing and Troubleshooting ,” (Part No. 4322430) provides
specific information for the installation, service and repair of 1998 Whirlpool Dishwashers.
“1998 DISHWASHERS, Servicing and Troubleshooting ,” has been compiled to provide the most re-
cent information on design, features, troubleshooting, service and repair procedures.
GOALS AND OBJECTIVES
The goal of this Job Aid is to provide detailed information that will enable the service technician to
properly diagnose malfunctions and repair the 1998 lineup of Dishwashers.
The objectives of the Job Aid are:
The service technician will -
• Understand proper safety precautions.
• Successfully troubleshoot and diagnose malfunction.
• Successfully perform necessary repairs.
• Successfully return the dishwasher to proper operational status.
WHIRLPOOL CORPORATION ASSUMES NO RESPONSIBILITY
FOR ANY REPAIRS MADE ON OUR PRODUCTS BY ANYONE
OTHER THAN AUTHORIZED SERVICE TECHNICIANS.
© 1998 Whirlpool Corporation, Benton Harbor, MI 49022
CO RP O R A T ION

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TABLE OF CONTENTS
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II
TABLE OF CONTENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV
SECTION ONE
DURAWASH MODELS W/ SOIL SETTLER AND TELESCOPING TOWER
Model: DU800DWG,DU801DWG,DU805DWG,DU810DWG,DP840DWG,
DU840DWG, DU850DWG, DU890DWG
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Component Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Solutionsto CommonProblems .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .13
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TechnicalInformation. .. . .. .. .. . .. .. .. .. . .. .. .. . .. .. .. .. . .. .. .. 16
SECTION TWO
POWER CLEAN FILTER MODELS W/ TOWER WATER FEED
Models: DU910PFG, DP920PFG, DU920PFG
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
ComponentAccess .. .. .. .. . .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. . .. .28
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
TechnicalInformation. .. . .. .. .. . .. .. .. .. . .. .. .. . .. .. .. .. . .. .. .. 34
SECTION THREE
POWER CLEAN FILTER MODELS W/ INTERNAL WATER FEED
Models: GU940SCG, GU960SCG, GU980SCG
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
ComponentAccess . . . .. .. .. . .. .. .. . . . .. .. .. . .. .. .. . . . .. .. .. . ..44
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
TechnicalInformation. .. . .. .. .. . .. .. .. .. . .. .. .. . .. .. .. .. . .. .. .. 51
SECTION FOUR
Installation Considerations
CustomDoor PanelConversion ... .. .. .. . .. .. .. ... .. .. .. . .. .. .. . 55
Floor Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
This Service Manual is accompanied by a companion video presentation,
SERVICING AND TROUBLESHOOTING
1998 DISHWSHERS
Part No. 4322329

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-- NOTES --

1
Section One
DURAWASH MODELS WITH
SOIL SETTLER AND TELESCOPING TOWER
THEORY OF OPERATION
Console Configuration
DU800DWG, DU801DWG, DU805
DU810DWG
DU840DWG, DP840DWG
DU850DWG
DU890DWG

2
Special Feature
Soil Settler
This model is equipped with a soil settler system. The inlet to the soil settler funnel is located to the
right and just behind the lower spray arm assembly.
(Fig. 1-1)
Since this inlet is located in an area that is relatively free of water turbulence, food particles washed
from the dishes can collect in this area and fall through the funnel and accumulate in the collector.
(Fig.
1-2)
Food particles continue to collect as long as the dishwasher is in the Wash mode.
When the Wash cycle is finished, the dishwasher will reverse the direction of the motor and enter the
Drain mode. Water is pumped into the port at the bottom of the soil collector during the Drain cycle
causing the ball in the collector to rise against the opening in the bottom of the funnel. Water flows
through and out of the collector through the top port and into the drain line.
(Fig. 1-3) Food particles
collected during the Wash cycle are carried out with the drain water. When the Drain cycle ends and
the pump stops running, the ball settles to the bottom of the collector.
Fig. 1-1
Fig. 1-2
Fig. 1-3
COLLECTOR
PUMP INLET
HOSE

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COMPONENT ACCESS
Component Location
! WARNING
ELECTRICAL SHOCK HAZARD
Disconnect electric supply from the dishwasher before servicing.
Replace all panels before operating.
Failure to do so could result in death or electrical shock.
(Bottom Right-side
Rear of Tub)

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Removing the Spray Arm Assembly
1. Disconnect the dishwasher from the house-
hold electrical system.
2. Open the dishwasher door and remove the
lower rack.
3. Use an adjustable slip-nut wrench and loosen
the pump outlet nut. (Fig. 1-4)
4. Lift the spray arm assembly out of the pump fitting.
5. The spray arm can be disassembled by removing
the retaining screw from the spray arm and removing the split-ring seal, the pump outlet nut
and the support and bearing assembly. (Fig. 1-5)
Fig. 1-4
Fig. 1-5
SPRAY ARM ASSEMBLY
SPLIT RING SEAL
PUMP OUTLET NUT
SUPPORT & BEARING
RETAINING SCREW
Removing the Pump and Motor Assembly
1. Disconnect the dishwasher from the household electrical system.
2. Lay the dishwasher on its back and disconnect the wiring harness connector from the motor.
3. Remove the motor support slip nut and remove the motor support.
(Fig. 1-6)
MOTOR SUPPORT
SUPPORT
SPLIT NUT
Fig. 1-6

5
4. Disconnect the drain hose from the drain valve by loosening the Hex-head screw on the hose
clamp. (Fig. 1-7)
5. Disconnect the pump inlet hose from the pump and motor assembly. (Fig. 1-7)
6. Remove the pump and motor assembly from the bottom of the dishwasher.
Fig. 1-7
PUMP INLET
HOSE DRAIN
HOSE
NOTE:Oncethe pump andmo-
tor assembly has been
removed from the tub,
the pump outlet grom-
met can be removed
from the inside of the
tub. Check the pump
outlet grommet for wear
or damage and replace
it if necessary.
The motor can be removed from the pump assembly by removing the three T-20 Torx screws securing
the motor to the pump assembly.
(Fig. 1-8)
TORX
SCREWS
NOTE:When reinstalling the
motor make sure the
keyed motor shaft lines
up with the pump impel-
ler.
Fig. 1-8
Servicing the Pump Assembly
The pump impeller can be accessed by using
an adjustable slip-nut wrench to turn the
disk mount assembly counterclockwise.
Once the disk mount assembly is removed,
the impeller can be removed.
(Fig. 1-9)
The drain valve can be accessed by removing
the four (4) T-20 Torx screws securing the drain
outlet cover to the pump assembly. The drain
cover seal, diaphragm and diaphragm ring can
be removed and replaced.
(Fig. 1-10)
TORX
SCREWS
SLIP-NUT WRENCH
Fig. 1-9
Fig. 1-10

6
Removing the Soil Settler Assembly
1. Disconnect the dishwasher from the household electrical system and lay the unit on its back.
2. Remove the four (4) Hex-head screws securing the soil settler assembly to the tub.
3. Disconnect the two (2) hoses from the soil settler collector.
4. Remove the funnel and funnel grate, check valve ball and seal from the soil settler collector.
(Fig. 1-11)
FUNNEL GRATE
FUNNEL
CHECK VALVE BALL
SEAL
CLAMPS
HOSE
Fig. 1-11
Removing the Heater Element
1. Disconnect the dishwasher from the household electrical system.
2. Disconnect the wiring harness connectors from the heater element terminals with a pair of
needlenose pliers.
3. Remove the two long Hex-head nuts securing the heater element to the tub.
(Fig. 1-12)
4. Remove the heater element from the three (3) metal clips that hold it suspended inside the tub.
(Fig. 1-13)
HEATER
ELEMENT
RETAINING
NUTS
HEATER
ELEMENT
Fig. 1-12 Fig. 1-13