8
American Dryer Corp.
450370 - 2
Sail Switch
The sail switch consists of a round damper plate on a lever
arm, which acts like an actuator for a microswitch. When the
air blower comes on, it draws air through the burner. This
creates a negative pressure inside the burner box, and this
negative pressure pulls in the round damper, which activates
the sail switch. If there is improper airflow, the damper will not
pull in, preventing the burner from coming on. Improper airflow
can be caused by improperly designed exhaust ducting, where
the duct run is too long or has too many sharp bends on it. It
can also be caused by a lack of make-up air. The sail switch is
located in the back of the dryer beside the burner inlet to the
tumbler.
Temperature Sensor (Computer Controls)
The temperature sensor used, is a transducer that converts
heat into microamps that the computer board then uses to
calculate the temperature.
Gas Burner
Gas dryers are equipped with a gas burner located behind the
control door. The gas burner assembly consists of the burner
tube, orifice (the orifices have a hole in them to allow gas to
flow through. The hole size varies with different elevations,
and different Btu), gas valve (which can be set up for natural
gas or L.P. gas), spark ignitor, and flame probe.
AD45x2R
AD30x2R
