American Dryer Corp. ADS-464 II User Manual

Page 64

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:

Check wiring on the MAIN ENCLOSURE PANEL (Refer to the ADS-464 Main Panel Wiring

Diagram)

Check wiring associated with Solenoid Junction Box.

Refer to troubleshooting procedures associated with the Solenoid Junction Box.

3b) Input 19 L.E.D. (light emitting diode) not illuminating correctly on the PLC (Programmable Logic

Controller) indicates that the signal to the PLC input is missing or the PLC is defective.

Check FUSE 2 on the main electrical panel

Check wiring back to the tumbler (basket) junction box

Check wiring back to the rear controls

Check PLC

Refer to the blueprints

Main electrical panel diagram

Tumbler junction box wiring PLC (Programmable Logic Controller) diagram

Rear panel controls wiring diagram

Retest; verify that the signal is operational