Back Cover; Drum Rollers; Touch Sensors - GE DCCH480EK Technical Service Manual

Touch Sensors

The touch sensor consists of 2 sensors permanently
attached to the drum support.
Note: The 2 touch sensors in the drum support are
not replaceable. To replace the sensors, replace the
drum support.
The sensors are connected to the main control
board. The sensors are spaced approximately
1/2-in. apart, creating an open circuit to the control.
• The control board utilizes a low-voltage
capacitor that charges to approximately 5 VDC
when the circuit is open and discharges to less
than 1 VDC when the circuit is shorted.
• When wet clothes tumble across the two
sensors, the clothes create a very low resistance
between the sensors. This low resistance
discharges the capacitor.
• As the clothes become dry, their resistance
value increases and the charge across the
capacitor builds to approximately 5 VDC.
• Operation of the touch sensors can be checked
by using the service test mode. (See
.)
Mode
• Proper leveling of the dryer is vital for accurate
sensor drying. If the front of the dryer is raised
too high, clothes will tumble toward the rear of
the drum, preventing contact with the sensors.
This could produce a false dryness reading.

Drum Rollers

The front of the stainless steel drum rotates on 2
rollers attached to the inside of the drum support.
The rollers can be replaced by removing the drum
support. (See
part of an assembly that consists of a roller,
1/2-in. hex-head screw, and a bushing.
Roller

Back Cover

It is necessary to remove the back cover to access
the heater assembly, inlet thermistor, manual reset
thermostat, and rear blower wheel.
The cover is attached to the back of the cabinet with
16 Phillips-head screws and 2 slots that engage 2
tabs on the cabinet.
Service Test
– 34 –
Drum Support Assembly
Bushing
Tab
Back Cover
.) Each roller is
Tab