GE PDE9900 manual Positive Displacement Pump, Approximate Detergent Use, To remove the pump

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Positive Displacement Pump

The SmartDispenseTM positive displacement pump consists of a continuous flexible tube running from the detergent reservoir to the inner door detergent outlet. The tube runs around the inside edge of the pump housing. A 3-roller impeller fits tightly into the center of the pump housing with each of the

3 rollers squeezing the sidewall of the tube. As the impeller is driven counterclockwise by the motor, it squeezes out a predetermined amount of detergent for each 1/3 revolution of the impeller.

Approximate Detergent Use

Smart Dispense Dosage Amount

Dosage (ml)

 

Soil Level

 

1

2

3

4

 

 

Hardness

1

33

41

49

57

2

35.4

43.4

51.4

59.4

 

3

37.8

45.8

53.8

61.8

 

4

40.2

48.2

56.2

64.2

 

5

42.6

50.6

58.6

66.6

Smart Dispense Bottle Duration

Bottle Duration (wks)

 

 

Soil Level

 

1

2

3

4

 

1

10.3

8.3

6.9

5.9

From

Detergent

Reservoir

Pump

Housing

Impeller

To Detergent Outlet

Hardness

2

9.6

7.8

6.6

5.7

3

9.0

7.4

6.3

5.5

4

8.4

7.0

6.0

5.3

5

8.0

6.7

5.8

5.1

 

To remove the pump

1.Remove the door panel. (See Door Panel.)

2.Remove 2 Phillips head screws from the lower right side of the door edge to release the pump bracket.

3.Remove the grommet from the inner door panel and unplug the tube from the reservoir outlet.

4.Disconnect the wires and remove the pump.

The dispenser pump operates on 120 VDC. During each pre-wash cycle, the pump is energized for 5 seconds, dispensing 4ml of detergent.

The electronic control uses two inputs to determine the total amount of detergent dispensed during the main wash cycle:

Soil Level determined by the turbidity sensor

Water Hardness as calibrated for the location

A water hardness selection mode permits the calibration of the water hardness for the location at installation. (See Water Hardness Test and Calibration.)

To determine the amount of detergent to dispense during the main wash, the control uses the following formula:

4ml x Number of Pre-washes

+ 25ml + Additional Quantity for Hardness

The additional quantity is a predefined quantity of detergent based on the water hardness level programmed into the control.

Positive Displacement Pump Strip Circuit

BULK DETERGENT

PUMP

ORANGE

WHITE

J2-1

M

875

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Contents Technical Service Guide Important Safety Notice Table of Contents W 9 9 8 0 L 0 0 S S NomenclatureModel Number Serial NumberIntroduction PDW8900 Series Control FeaturesSelections Enhancements Start PDW8900 Series Shown Inside Cabinet View Component Locator ViewsLeft Side View PDW8900 Series Shown Door ViewPDW8900 Series Shown Bottom View PDW9000 Series ShownFront of Dishwasher Rear of DishwasherPDW8900 Series Dishwasher ComponentsDoor Panel PDW9700 Series and PDW9900 Series Keypad Assembly PDW9700 Series and PDW9900 Series SmartDispenseTM Calibration Water Hardness Test and Calibration Test Water HardnessWater Hardness Test Strip Indication Front Mount Control PDW8900To remove the reservoir SmartDispenseTMDetergent Reservoir Detergent Level Sensor To remove the pump Positive Displacement PumpApproximate Detergent Use Consumer Purge Cycle When to Purge the Bulk Dispenser TankCustomer Purge of the Bulk Dispenser Tank first time the module is activated Door Interlock SwitchDetergent/Rinse Module Middle Spray Arm Using the Dishwasher with the Upper Rack RemovedRemoval and Replacement Main Conduit Upper Spray ArmFill Funnel Lower Spray Arm, Fine Filter, and Inlet CoverHeating Element Calibrating the Turbidity Sensor Turbidity SensorTest Drain System Smart Fill System Water Valve Test Water Valve and Flood SwitchWash Cycles Demo ModeControl Module Board Control ModuleActive Vent Normal Wash Cycle Single Rack WashTMWax Motor and Magnet Circulation Pump and MotorDoor Spring Installation Description Time Service ModeEntering Factory Test Mode Factory Test ModeVerify operation after Schematics and Strip CircuitsPDW9900 Series PDW9700 SeriesFor The Period GE Will Replace Warranty for 2005 ProductFor The Period GE Will Replace Warranty for 2006 and Later Product