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General Problem
Possible Cause
Solution
TROUBLESHOOTING GUIDE
(Cont.)
Ground
Fault (GF)
Over-Voltage
Fault (OU)
Over-Load
Fault (OL)
Current Limit
Fault (CL)
Feedback
Fault (FF)
(Continued On Next Page)
The Ground Fault is typically caused by
a ground connection problem, and can
create a safety hazard. It can occur
without high voltage and will not reset.
The Over Voltage Fault indicates the
output voltage exceeds the design speci-
fications. It typically occurs during a high
voltage trigger.
The Over Load Fault indicates the current
output has exceeded the overload thresh-
old. This fault is only active if jumper 17
is shorted. The overload threshold is
normally set at 10 µA below the maximum
output of the applicator.
The Current Limit Fault indicates the
current output of the gun has exceeded
the maximum allowable output current. It
typically occurs with the high voltage on.
The Feedback Fault indicates there is
no current feedback or it is incorrect. It
typically occurs with the high voltage on.
1. Check for loose wiring between the pc board
connector and the high voltage section by
pulling on each wire. Repair if necessary.
Insure both connectors are secure and re-test
for GF fault.
2. Adjust the setpoint to 20kV and turn on the
high voltage. A GF fault indicates a faulty pc
board - replace.
3. Replace high voltage section.
4. Send unit in for repair.
1. Check connections using two finger pull test
to ensure they are connected.
2. Replace the pc board.
3. Send unit in for repair.
This may indicate the paint conductivity is too
high (resistance too low) or the outside of the
applicator is contaminated with paint. Test paint
for proper conductivity or clean applicator with
non-polar solvent.
1. This may indicate the paint conductivity is too
high (resistance too low) or the outside of the
applicator is contaminated with paint. Test
paint for proper conductivity or clean applicator
with non-polar solvent.
2. Replace applicator and re-test. If problem still
exists, replace main pc board.
3. Send applicator in for repair.
Send high voltage controller in for repair.
CP-17-02
27
9060 Classic High Voltage Controller -
MAINTENANCE