Drain Pump - GE WPRB9250 Technical Service Manual

Drain Pump

Warning:
• The pump may not be grounded. Unplug the unit before servicing to avoid electric shock.
• The pump may begin operation without any advanced notice.
• This model is equipped with flood protection. If the low pressure switch opens while the washer is
in idle mode, the electronic control board will activate the drain pump. Pump operation will continue
for 60 seconds after the low level switch closes.
The drain pump is coupled to a 120 VAC, 60 Hz, 85 watt motor. The pump will operate independently
of other mechanical components, and will evacuate water at various times during all cycles.
The pump receives L1 voltage directly from the electronic control board and switching takes place on
the L1 side. When the electronic control board has closed the L1 side of the pump circuit (commanding
the pump to run), the board measures the current of the pump and uses the measurements to
determine if the pump is pumping water or air. The pump wiring includes a snubber to reduce EMI. A
shorted snubber may cause a failure to occur on the electronic control board (see Electronic Control
Board).
To test the pump:
Place the unit in the service mode (see page 34) and advance to the Pump Test function. The pump
should activate upon entering function. P should be displayed on the Digital Seven Segment Display
(DSSD) along with the pump current draw in tenths of an amp.
To remove the pump:
Note: Water will remain in hoses even when the tub
appears empty. Use care to avoid water spills.
1. Disconnect power to the machine.
2. Lower the drain hose into a small bucket to remove
any water remaining in hose.
3. Remove the front panel (see Front Panel).
4. Disconnect the lead wires.
5. Pinch off the black sump hose to prevent water spills.
6. Remove hose clamps and hoses from the pump.
7. Remove 2 (3/8-in.) screws and the pump.
Drive Belt
The drive belt (P/N WH1X2026) is located under the leg
and platform assembly. It extends from the motor pulley to
the transmission pulley. To adjust the belt, loosen the 4
motor mounting nuts and slide the motor forward until the
belt is tight, then retighten the nuts.
Note: Proper belt tension is 1/2-in. deflection at midpoint
between pulleys.
Snubber Snubber
Pump
Pump
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P0003587