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Gas Burner
The gas burner assembly consists of the burner tube, orifice
(the orifice has a hole in it to allow gas to flow through. The
hole size varies with different elevations, and different BTUs),
gas valve (which can be set up for natural gas or L.P.), spark
ignitor and probe assembly, DSI module, and flame spreader.
Sail Switch
The sail switch consists of a round plate on a lever arm, which
acts like an actuator for a micro-switch. When the blower
motor comes on, it draws air from the burner. This creates a
negative pressure inside the basket area, 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 in it. It
can also be caused by a lack of make-up air.
Electrical Panel
The electrical panel is located at the back of the machine at
the center left. The panel includes two contactors, a
transformer, and fuse(s). The purpose of the contactors is to
provide line voltage to the motors once the low voltage signal
is received at the coil. The purpose of the transformer is to
provide a low voltage power source for the control circuits.
The fuse(s) are to protect the transformer.
Service ________________________________
All electrical/mechanical service or repairs should be made
with the electrical power to the dryer disconnected (power
off).
WARNING: Personal injury could result.
The information provided in this section should not be
misconstrued as a device for use by untrained persons making
repairs. Service work should be performed by competent
technicians in accordance with local state and federal codes.
When contacting the factory for assistance, always have the
dryer model and serial numbers available.
CAUTION: Observe all safety precautions displayed on
the dryer or specified in this manual before and while
making repairs.
IMPORTANT: The information provided will help isolate the
most probable component(s) associated with the difficulty
described The experienced technician realizes, however,
that a loose connection or broken/shorted wire may be at
fault where electrical components are concerned … not
necessarily the suspected component itself. Electrical parts
should always be checked for failure before being returned
to the factory.
You must disconnect and lockout the electric supply and the
gas supply before any covers or guards are removed from
installation, or testing of any equipment per OSHA
standards.
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