GE WSXH208T, Technical Service Manual, Page: 34 / 51

33
tracks in the center of the tub pulley. Adjust tracking,
if required, by moving belt on motor pulley.
ELECTRONIC SPEED CONTROL
The Electronic Speed Control monitors a tachogenera-
tor built into the DC drive motor. Its purpose is to control
the motor (tub) RPM during the wash and spin cycles.
The speed control is mounted on the base at right rear.
The Electronic Speed Control serves the following
functions:
1. Converts AC voltage to DC voltage for use by the
drive motor.
2. Maintains spin basket speeds during wash (52
RPM) and spin (850 RPM max.) by monitoring the
drive motor tachogenerator output, and then vary-
ing the DC voltage output to the drive motor to
regulate the spin basket speed independently of
load size.
3. Provides initial speed ramps to prevent excessive
machine vibrations and/or cabinet walking.
4. Redistributes unbalanced loads until corrected
and/or desired speeds are achieved.
To Remove or Replace Electronic Speed Control:
1. Disconnect washer from electrical supply.
2. The electronic speed controller may be removed
from either the front or rear of the washer, the rear
being a little easier if access to the washer is not
restricted.
3. If easily accessible, remove rear service panel, go
to step 5. If rear service panel is not easily ac-
cessed, as in a stacked or undercounter
installation, go to step 4.
4. Remove lower front access panel.
5. Remove two screws securing speed control hous-
ing to base, and pull housing up to disengage
housing locating pins from base.
6. Remove wiring to the electronic speed control.
7. Unsnap catch on speed control housing to release
speed control board.
8. Install new motor speed controller, making sure
that the edge connector terminals are touching the
silver contact area, and reverse procedure to reas-
semble.