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CONSUMER SERVICES TECHNICAL
KD-10
EDUCATION GROUP PRESENTS
1998 DISHWASHERS
Servicing and Troubleshooting
MODELS
DU800DWG DU801DWG DU805DWG
DU810DWG DP840DWG DU840DWG
DU850DWG DU890DWG DU910PFG
DP920PFG DU920PFG GU940SCG
GU960SCG GU980SCG
JOB AID
Part No. 4322430
I
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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
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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 . . . .
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-- NOTES -- IV
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Section One DURAWASH MODELS WITH SOIL SETTLER AND TELESCOPING TOWER THEORY OF OPERATION Console Configuration DU800DWG, DU801DWG, DU805 DU810DWG DU840DWG, DP840DWG DU850DWG DU890DWG 1
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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) 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 W
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COMPONENT ACCESS ! 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. Component Location (Bottom Right-side Rear of Tub) 3
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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. Fig. 1-4 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) SPRAY A
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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. NOTE: Once the pump and mo- tor assembly has been removed from the tub, PUMP INLET DRAIN the pump outlet grom- HOSE HOSE met can be removed from the inside of the tub. Check the pump outlet grommet for wear or damage and replace it if
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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 th
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Removing the Water Inlet Valve 1. Turn off the water supply to the dishwasher. 2. Turn the timer knob clockwise to the NORMAL WASH position to energize the water inlet valve and relieve water pressure in the line. 3. Turn the electrical supply to the dishwasher off and remove the toe panel and access panel. (Fig. 1-14) Fig. 1-14 4. Disconnect the wiring harness connector from the Fig. 1-15 water inlet valve terminals. (Fig. 1-15) 5. Disconnect the water lines from the water inlet valve. 6. Remov
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Removing the Check Valve RETAINING SCREW 1. Remove the toe panel and access panel from the bottom of the dishwasher. 2. Remove the hoses from the check valve. Fig. 1-19 3. Remove the Hex-head screw securing the check valve to the tub support. (Fig. 1-19) Removing the Motor Relay 1. Disconnect the dishwasher from the electrical supply and remove the toe panel and access panel from the bottom of the dishwasher. 2. Disconnect the three (3) wiring harness connectors from the motor relay terminals. 3
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Wiring Harness Removing the Timer Connector 1. Disconnect the dishwasher from the electrical supply and remove the toe panel and access panel from the bottom of the dishwasher and the inner door panel. Screw 2. Disconnect the wiring harness connectors from Screw the timer terminals. (Fig. 1-23) Wiring Screw 3. Remove the three (3) Hex-head screws securing Harness Fig. 1-23 Connector (Fig. 1-23) The timer, the timer to the door frame. cam and cam follower can now be removed. NOTE: When reinstal
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Dishwasher Dispenser Disassembly 1. Remove the drawbar spring. (Fig. 1-26) 2. Align the lower drawbar holes with the locking tabs and remove the upper and lower drawbars. As you do, note the locating tabs behind them and how they align with their respective locating holes. (Fig. 1-27) 3. Slide the drawbars apart. (Fig. 1-28) 4. Turn the wet agent cap and seal assembly counterclockwise and remove it. (Fig. 1-29) 5. Remove the seal from the cap. 6. Use Special Tool - Part No. 303918 or a ¾” socket
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Fig. 1-28 Fig. 1-29 Fig. 1-31 Fig. 1-30 11
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Dishwasher Dispenser Assembly 1. Assembly the upper slide, slide spring and lower slide to the detergent (Fig. 1-32) door actuator. 2. Pass the detergent door latch lever through the panel making sure to turn the hook of the latch toward the detergent door. Snap the detergent door latch snap (Fig. 1-31) onto the door latch lever. 3. The door latch lever must pass through the opening in the lower slide. Press the actuator assembly into position until the upper and lower tabs engage. 4. Inse
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SOLUTIONS TO COMMON PROBLEMS DIAGNOSING PROBLEM COMPONENTS PRECAUTIONS TO BE OBSERVED WHILE DIAGNOSING PROBLEM COMPONENTS Disconnect electric power from the dishwasher. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in. Resistance checks should be made on components with the electric power off and the connector blocks disconnected. COMPONENT SCHEMATIC TESTING PROCEDURE RESULTS Moto
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COMPONENT SCHEMATIC TESTING PROCEDURE RESULTS Timer Motor 1. Disconnect the Wiring harness 1. Meter should read 1800 - 3000Ω. connector from the timer assembly. 2. Set VOM meter on the Rx1 scale. 3. Measure resistance between timer motor terminals. Timer 1. Disconnect the wiring harness 1. Contact CLOSED - meter should connector from the timer assembly. read 0Ω. 2. Set VOM meter on the Rx1 scale. 2. Contact OPEN - meter should 3. Connect one probe to contact 31. read º (infinity). (Tan) 4. Conne
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TROUBLESHOOTING GUIDE PRECAUTIONS TO BE OBSERVED WHILE TROUBLESHOOTING AND DIAGNOSING PROBLEMS Always check wiring harness and connectors before initiating any test procedures. Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in. Resistance checks should be made on
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TECHNICAL INFORMATION Wiring Diagram Models DU800DWG, DU801DWG, DU805DWG SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN 16
