Poweramp POWERSTOP 4.2009 - Manual (Page 16)

14
4111-0014 — November 2006
Sept 2007
Restraint does not raise or lower - Motor does not
run, inside and outside lights do not work.
Troubleshooting
1. No voltage at control assembly. Check voltage
input.
2. Blown fuse inside control assembly. Use voltmeter
to test.
Electrical Troubleshooting
Line side of fuse is always hot. Turn off main power
supply before removing fuses. Attach proper lock-
out / tag-out devices.
3. Defective contact block at power selector switch.
Test with voltmeter.
4. Defective contactor. Use voltmeter to test voltage
coming in to contactor and going out of contactor
when contactor is activated.
5. Defective overload. Use voltmeter to test voltage
coming in to contactor and going out of contactor
when contactor is activated.
Restraint does not raise or lower-motor hums but
does not run, inside and outside lights work. 1. Voltage too low. Check for low voltage. Increase
wire size from main electrical panel to PowerStop
control panel to correct voltage drop.
2. Defective capacitor. Disconnect capacitor. Test.
Discharge capacitor before attempting a capacitor
test.
Restraint does not raise-motor runs in pressure relief,
inside and outside lights work. 1. Solenoid coil not electrically energizing. Check
coil for magnetism. use voltmeter to test voltage at
coil.
2. Solenoid valve mechanically stuck OFF. Remove
valve, inspect valve and block for contaminant's.
Test. Replace if necessary.
IMPORTANT
Do not run motor when valves are removed from
valve block.
Do not over tighten coil on valve: 15 inch lbs max
which is just over finger tight.
Do not over tighten valve into block: 15 foot lbs
max which is enough to compress the washer and
prevent leakage.
Restraint does not raise-motor does not run, inside
and outside lights work. 1. Defective contact block at activated pushbutton.
Use voltmeter to test.
2. No voltage at motor. Use voltmeter to test voltage
at motor.
3. Thermal protector inside motor has tripped. Wait
for protector to reset.
Problem Possible Solution(s)