American Dryer Corp. ADG-385 - Manual (Page 16)

12
K. Sail Switch
The sail switch consists of a round damper plate on a
lever arm which acts like an actuator for a
micro-switch. 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 air flow 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. Sail switch is
located in the back of the burner.
J. Temperature Sensors
The temperature sensor used in a transducer that
converts heat into microamps that the computer board
then uses to calculate the temperature.