American Dryer Corp. ADS-464 User Manual

Page 64

- Refer to blueprints:

Main electrical panel diagram

Tumbler junction box wiring diagram

Rear panel controls wiring diagram

Re-test

0 UNLOAD 1 Selection

PROBABLE CAUSES;

1. Rear panel disconnect plug

2. Defective switch

3. Wiring back to main electrical enclosure

POSSIBLE SOLUTIONS;

1. If the O UNLOAD 1 switch doesn’t respond when selected:

Verify that the rear panel controls disconnect plug is indeed connected. This disconnect plug
allows for the removal of the rear control panel for dryer servicing.

2. Defective O UNLOAD 1 Selector Switch

Shut power off at the main breaker and remove the rear panel and check switches using an OHM
meter; replace if defective.

3. Wiring back to the main electrical enclosure

With the control voltage “ON” Front Panel “GREEN” Button

Select “1” on the “O UNLOAD” switch located on the rear control panel. Does PLC
(Programmable Logic Controller) IN PIN 19 = UNLOAD, REAR PANEL light?

- If “YES,” refer to section 3a

- If “NO”, refer to section 3b

3a) The L.E.D. (light emitting diode) “ON” on the PLC (Programmable Logic Controller) indicates are

also illuminating when the O UNLOAD 1 selector switch is on “1.”

PLC OUT PIN 7 = UNLOAD DOOR (OPEN)

PLC OUT PIN 10 = FRONT UP

If output indicators are functional, however the UNLOAD DOORS of FRONT UP commands
are not executed correctly: