Drying Time - GE DSXH47EG Technical Service Manual

N
The other side of the holding coil, booster coil and igniter
are connected to neutral through the second centrifugal
switch in the motor (closed when the motor is running).
When power is applied across these circuits, current
flows through the holding coil but the holding coil does
not have enough magnetic force to open the solenoid
by itself. At the same time, current flows through the
sensor contacts providing power to the booster coil and
the igniter. When current flows through both the holding
and booster coils, the first chamber opens. The contacts
of the sensor are in parallel with the secondary coil. As
long as the contacts of the sensor remain closed, current
flow bypasses the secondary coil, and gas is prevented
from flowing through the second chamber of the valve to
the burner.
Sensor
It is necessary to raise the temperature above 1100°F to
ignite gas. As current flows through the igniter, the
temperature of igniter raises from room temperature
°
to approximately 1800 F within 30 seconds. The contacts
of the sensor are heat sensitive and set to open above
the ignition temperature of gas. When the sensor
contacts open, current flows through the secondary coil,
opening the second chamber, allowing gas to flow to the
burner, which is ignited by the heat of the igniter. When
the contacts of the sensor are open, the parallel circuit
formed by the igniter and the booster coil are in series
with the secondary coil which lowers the current flow
through the igniter and booster coil.
L1
Igniter
Since it takes less magnetic force to hold a solenoid
open than it does to open it, the first solenoid remains
open when the current through the booster coil is
reduced. The reduction of current flow through the
igniter reduces heat from the igniter but the sensor
contacts are held open by the heat of the burner flame.

Drying Time:

The amount of drying time is determined in one of two
ways: (1) A fixed amount of drying time may be obained
by turning the SELECTOR knob to one of the fixed drying
times. (2) The AUTO DRY cycles the variable amount of
time determined by the size of the load, the amount of
moisture in the clothes and the dryness setting selected.
In the AUTO DRY cycles, the electronic control reads
the capacitance between the two sensor bars located
in the vent cover.
When wet clothes are placed in the dryer, the
clothes touch the sensor bars and the moisture
lowers the capacitance between the bars. As the
dryer runs, moisture is removed from the clothes,
the capacitance between the bars increases. When
the increase in capacitance satisfies the electronic
control, the cycle status will change from "Auto Dry"
to "Cool Down" and the load is tumbled without
heat. At the end of cycle, the electronic control will
turn the dryer off and the end of cycle signal will
sound.
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