Troubleshooting

Electrical Troubleshooting

Problem

Cause

Solution

 

 

 

Voltage still present at gun after fol-

ES ON/OFF valve is not turned OFF.

Turn OFF.

lowing the Fluid Voltage Discharge

 

 

and Grounding Procedure

 

 

 

 

 

 

Did not wait long enough for voltage

Wait longer before touching electrode

 

to discharge.

with grounded rod. Check for bleed

 

 

resistor failure.

 

 

 

 

Air pocket in fluid line leaves fluid

Determine cause and correct. Purge

 

near gun isolated.

air from fluid line.

 

 

 

 

Voltage isolation system failed.

Service voltage isolation system.

 

 

 

 

Grounding cylinder not operating.

Check resistance of grounding cylin-

 

 

der, page 33. Replace if needed.

 

 

 

Poor wrap.

ES ON/OFF valve OFF (0).*

Turn ON (I).

 

 

 

 

Gun air pressure too low.

Check air pressure to gun; minimum

 

 

40 psi (0.28 MPa, 2.8 bar) needed at

 

 

gun for full voltage.

 

 

 

 

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.

 

 

 

 

Fluid leaks from the packing (26d)

Clean the packing rod cavity.

 

and causes a short.

Replace the packing rod. See page

 

 

45.

 

 

 

 

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 48.

 

 

 

 

The KV HI-LO lever is on LO.

Check the lever actuation; replace if

 

 

needed.

 

 

 

 

Spilled paint, dried paint, or other

Clean interior of enclosure.

 

contaminants inside WB100 enclo-

 

 

sure, causing a short circuit.

 

 

 

 

309293J

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