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Electrical Troubleshooting
Problem
Voltage still present at gun after fol-
lowing the Fluid Voltage Discharge
and Grounding Procedure
Poor wrap.
309293K
Cause
ES ON/OFF valve is not turned OFF. Turn OFF.
Did not wait long enough for voltage
to discharge.
Air pocket in fluid line leaves fluid
near gun isolated.
Voltage isolation system failed.
Grounding cylinder not operating.
ES ON/OFF valve OFF (0).*
Gun air pressure too low.
Atomizing air pressure too high.
Fluid pressure too high.
Incorrect distance from gun to part.
Poorly grounded parts.
Faulty gun resistance.
Fluid leaks from the packing (26d)
and causes a short.
Faulty turbine alternator.
The KV HI-LO lever is on LO.
Spilled paint, dried paint, or other
contaminants inside WB100 enclo-
sure, causing a short circuit.
Troubleshooting
Solution
Wait longer before touching electrode
with grounded rod. Check for bleed
resistor failure.
Determine cause and correct. Purge
air from fluid line.
Service voltage isolation system.
Check resistance of grounding cylin-
der, page 33. Replace if needed.
Turn ON (I).
Check air pressure to gun; minimum
40 psi (0.28 MPa, 2.8 bar) needed at
gun for full voltage.
Decrease.
Decrease.
Should be 8-12 in. (200-300 mm).
Resistance must be 1 megohm or
less. Clean workpiece hangers.
See Test Gun Resistance on page
30.
Clean the packing rod cavity.
Replace the packing rod. See page
45.
Be sure the plug is in place on the
back of the turbine alternator hous-
ing. Remove and test the turbine
alternator. See page 48.
Check the lever actuation; replace if
needed.
Clean interior of enclosure.
39
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Table of Contents
Troubleshooting
