Stator; Pump - EcoSmart GWL10US Service Supplement Manual

STATOR

The stator resistance has changed to allow for a lower current through the electronics. This stator is
not interchangeable with the previous models and can be identified by smaller terminal connections.
The resistances of the windings are now 16 ohms per phase.
The rotor has not changed and can be used for all models Smart Drives except Phase 1 models.
RED BLUE YELLOW
SERIES 10 STATOR RESISTANCE

PUMP

The pump now uses a vortex impeller, which reduces the operating sound levels at the end of the
drain cycle.
The way we control the pump has changed. During the drain cycle the pump is stopped and started
quickly every 10 seconds. When the pump stops, the water keeps flowing, flushing away any lint in
the pump chamber.
The pump is now part of the electronic circuit and acts as a brake resistor as well as being part of
the switch mode power supply. We run the pump at 60Hz at the beginning of the drain cycle and
change to 50Hz when the water level reaches the bowl check stage. The pulsing on and off of the
drain pump only occurs during the 60Hz stage.
If the mains voltage drops below approximately 106 VAC, the 60Hz mode is disabled until the
module is reset.
Because the pump is part of the switch mode power supply, it is important to first check the pump
before changing a module for "no power".