Troubleshooting
38
309457G
Electrical Troubleshooting
Problem
Cause
Solution
Voltage still present at gun after fol-
lowing the Fluid Voltage Discharge
and Grounding Procedure
Turbine air is not turned off.
Turn off.
Did not wait long enough for voltage
to discharge.
Wait longer before touching electrode
with grounded rod. Check for bleed
resistor failure.
Air pocket in fluid line leaves fluid
near gun isolated.
Determine cause and correct. Purge
air from fluid line.
Voltage isolation system failed.
Service voltage isolation system.
Poor wrap.
Turbine air is not turned on.
Turn on.
Booth exhaust velocity is too high.
Reduce velocity to within code limits.
Atomizing air pressure too high.
Decrease.
Fluid pressure too high.
Decrease.
Incorrect distance from gun to part.
Should be 8-12 in. (200-300 mm).
Poorly grounded parts.
Resistance must be 1 megohm or
less. Clean workpiece hangers.
Faulty gun resistance.
See Test Gun Resistance on page
30.
Low fluid resistivity.
Check fluid resistivity, page 20.
Fluid leaks from the packing (8d) and
causes a short.
Clean the packing rod cavity.
Replace the packing rod. See page
44.
Faulty turbine alternator.
Be sure the plug is in place on the
back of the turbine alternator hous-
ing. Remove and test the turbine
alternator. See page 50.
The KV switch is stuck on low.
Check the switch actuation; replace if
needed.
No power.
Replace power supply. See page 49.
No voltage or low voltage reading on
the gun ES display module
Damaged fiber optic cable or connec-
tion.
Check; replace damaged parts.
Turbine air is not turned on.
Turn on.
Poor wrap.
See causes and solutions under Poor
Wrap, above.
Operator gets mild shock.
Operator not grounded or is near
ungrounded object.
See Grounding on page 18.
Gun not grounded.
See Check Electrical Grounding on
page 19 and Test Gun Resistance
on page 30.
Operator gets shock from workpiece. Workpiece not grounded.
Resistance must be 1 megohm or
less. Clean workpiece hangers.
Summary of Contents for PRO Auto Xs
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