SECTION IV

DESCRIPTION OF PARTS

A. CONTROL BOX

Lifting the control door and opening the computer panel will reveal the control box. Inside the control box are ALL the electronic control components. Located on the back of the control panel is the computer. Included in the control box are the 30-position block, fuse block, and transformer.

B. 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, forward or backward. The drive motor is a 3/4 HP motor and operates on 208 to 460 volts, 3-phase (3ø), 50/60 Hz.

C. HSI (HOT SURFACE IGNITION) MODULE (Gas Models Only)

The HSI (Hot Surface Ignition) system consists of a microprocessor (computer) based control module, along with a hot surface ignitor probe, and a flame probe assembly. The hot surface ignitor is a silicon carbide ignitor that upon application of 24 VAC will glow bright orange for the inter-purge time period. Upon ignition, the resistance in the flame sensor electrode changes and the information is sent to the HSI module via the sensor probe lead connection to the module. Once the resistance is changed and sensed, the HSI module will sustain the gas flow (provide 24 VAC power to the gas valve).

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ADC 450428 service manual Description of Parts, Control BOX, Drive Motor, HSI HOT Surface Ignition Module Gas Models Only