Ransburg 80100 Series Service Manual page 49

Fault
Ground Fault (GF)
Over-Voltage Fault
(OU)
Over-Load Fault
(OL)
Current Limit Fault
(CL)
Feedback Fault
(FF)
CP-13-05.3
9060 High Voltage Controller - Maintenance
Description
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 specifications. It typically
occurs during a high voltage trig-
ger.
The Over Load Fault indicates the
current output has exceeded the
overload threshold. 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.
Solution
1. Check for loose wiring between the pc
board connector and the high voltage sec-
tion by pulling on each wire. Repair if nec-
essary. Insure both connectors are secure
and re-test for GF fault. For external cas-
cades, measure resistance between
ground and external cascade ground
stud—if greater than 5 ohms replace low
voltage cable.
2. Replace high voltage section.
3. Send unit in for repair.
1. Check connections using two finger pull
test to ensure they are connected.
2. Replace the main pc board.
3. Send high voltage control unit in for repair.
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. Ensure
dump lines are clean.
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. Ensure
dump lines are clean.
2. Replace applicator and re-test. If problem
still exists, replace main pc board.
3. Send applicator in for repair.
1. Send high voltage controller in for repair.
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