Troubleshooting

Electrical Troubleshooting

 

 

 

 

 

 

Problem

Cause

Solution

 

 

 

 

 

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

 

 

 

18.

 

 

 

 

 

 

Low fluid resistivity.

Check fluid resistivity, page 14.

 

 

 

 

 

 

Fluid leaks from the packing (26d)

Clean the packing rod cavity.

 

 

and causes a short.

Replace the packing rod. See page

 

 

 

29.

 

 

 

 

 

 

Faulty turbine alternator.

Be sure the plug is in place on the

 

 

 

back of the power supply housing.

 

 

 

Remove and test the turbine alterna-

 

 

 

tor. See page 32.

 

 

 

 

 

 

The KV HI-LO lever is on LO.

Check the lever actuation; replace if

 

 

 

needed.

 

 

 

 

 

ES indicator or voltage/current dis-

ES ON/OFF valve OFF (0).*

Turn ON (I).

 

play is not lit.

 

 

 

 

 

 

 

 

No power.

Replace power supply. See page 31.

 

 

 

 

 

Voltage/current display stays red

Gun too close to part.

Should be 8-12 in. (200-300 mm).

 

(smart guns only).

 

 

 

 

 

 

 

 

Check fluid resistivity.

See Check Fluid Resistivity on

 

 

 

page 14.

 

 

 

 

 

 

Dirty gun.

Clean. See Operation Manual.

 

 

 

 

 

Operator gets mild shock.

Operator not grounded or is near

See Grounding on page 12.

 

 

ungrounded object.

 

 

 

 

 

 

 

Gun not grounded.

See Check Electrical Grounding on

 

 

 

page 13 and Test Gun Resistance

 

 

 

on page 18.

 

 

 

 

 

Operator gets shock from workpiece.

Workpiece not grounded.

Resistance must be 1 megohm or

 

 

 

less. Clean workpiece hangers.

 

 

 

 

 

* ES indicator light is off when the gun is triggered.

309292L

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Page 23
Image 23
Haier 309292L Electrical Troubleshooting, See Test Gun Resistance on, See Check Fluid Resistivity on