ADC AD-78 User Manual

Page 53

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E. Blower/Fan motor is not operating (does not start)...

1. Microproesssor controller (computer) motor indicator dot and relay output L.E.D. (light emitting diode)

indicator dots are on ...

a. Failed blower (impellor/fan) motor contactor (relay).

b. Failed arc suppressor (A.S.) board.

c. Failed blower (fan/impellor) motor.

2. Microprocessor controller (computer) "door" L.E.D. is on but motor output L.E.D. indicator is off...

a. Failed microprocessor controller (computer).

E Blower/Fan motor

(Reversing Models ONLY)

operates okay for a few minutes, then stops and

will not restart...

1. Motor is overheating and tripping out on internal overload protector...

a. Motor air vents clogged with lint.

b. Low voltage to motor.

c. Failed motor.

d. Failed blower (impellor/fan)...out of balance.

G. Both drive motor and blower (impellor/fan) motor

(Reversing Models ONLY)

not operating

(does not start)... microprocessor (computer) motor indicator dots and relay output L.E.D.
(light emitting diode) indicators

are on...

1. Failed arc suppressor (A.S.) board.

2. Failed contactors (both blower [fan/impellor] and drive).

3. Failed motors (both blower [fan/impellor] motor and drive motor).

H. Both drive motor and blower (impellor/fan) motor

(Reversing Models ONLY)

not operating

(does not start)... microprocessor (computer) L.E.D. motor indicator dots and the “door”

L.E.D. indicator луге

but the relay output L.E.D. indicators arc

ofl

(microprocessor

controller [computer] L.E.D. display does not read “door”)...

1. Failed microprocessor controller (computer).

Both drive motor and blower (impellor/fan) motor run a few minutes and stop ... micro

processor (computer) L.E.D. display continue to read time or percent of extraction and ALL
indicator dots

are off...

1. Fault in main door switch circuit ...