Troubleshooting

Electrical Troubleshooting

Problem

Cause

Solution

 

 

 

Poor wrap.

Turbine air is not turned on.

Turn on.

 

 

 

 

Booth exhaust velocity is too high.

Reduce velocity to within code limits.

 

 

 

 

Atomization 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

 

 

29.

 

 

 

 

Low fluid resistivity.

Check fluid resistivity, page 17.

 

 

 

 

Fluid leaks from the packing (8d) and

Clean the packing rod cavity.

 

causes a short.

Replace the packing rod. See page

 

 

41.

 

 

 

 

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 47.

 

 

 

 

The KV switch is stuck on low.

Check the switch actuation; replace if

 

 

needed.

 

 

 

 

No power.

Replace power supply. See page 46.

 

 

 

No voltage or low voltage reading on

Damaged fiber optic cable or connec-

Check; replace damaged parts.

the gun ES display module

tion.

 

 

 

 

 

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

See Grounding on page 15.

 

ungrounded object.

 

 

 

 

 

Gun not grounded.

See Check Electrical Grounding on

 

 

page 16 and Test Gun Resistance

 

 

on page 29.

 

 

 

Operator gets shock from workpiece.

Workpiece not grounded.

Resistance must be 1 megohm or

 

 

less. Clean workpiece hangers.

 

 

 

34

309298J

Page 34
Image 34
Graco Inc TI1713A, 309298J Electrical Troubleshooting, See Test Gun Resistance on, See Check Electrical Grounding on

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