American Dryer Corp. ML-145 - Manual (Page 15)

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D. HSI (HOT SURFACE IGNITION) MODULE
(Gas Models ONLY)
The HSI (Hot Surface Ignition) system consists of a
microprocessor (computer) based control module,
along with an ignitor/flame-probe assembly. This
control utilizes a 24 V carbide ignitor and a rectified
flame sensor/probe signal to locally control ALL basic
functions in the gas burner.
E. GAS BURNER ASSEMBLY
Gas heated dryers are equipped with
a gas burner assembly consisting of
four (4) burner tubes, gas valve, HSI
ignitor, sail switch, and hi-limit
thermostat. The inlet piping enters
through the rear of the dryer on the
left hand side (viewing from the front)
and runs to the front of the dryer where
the gas valve is located.
F. DRIVE MOTOR
The T.E.F.C. (Totally Enclosed, Fan-Cooled) drive
motor is located approximately lower center of the dryer.
It sits on an adjustable base so that the motor can be
easily adjusted to the left or right, up or down. The
drive motor is a 1 HP (0.75 kw) motor and operates on
208 to 460 volts, 3-phase (3ø), 50/60 Hz.