Graco 244581 Instructions-Parts List Manual page 40

Troubleshooting
Problem
ES indicator or voltage/current dis-
play is not lit.
Voltage/current display stays red
(smart guns only).
Operator gets mild shock.
Operator gets shock from workpiece. Workpiece not grounded.
* ES indicator light is off when the gun is triggered.
40
Cause
ES ON/OFF valve OFF (0).*
No power.
Gun too close to part.
Check fluid resistivity.
Dirty gun.
Operator not grounded or is near
ungrounded object.
Gun not grounded.
Solution
Turn ON (I).
Replace power supply. See page 47.
Should be 8-12 in. (200-300 mm).
See Operation on page 19.
Clean. See page 27.
See Grounding on page 17.
See Check Electrical Grounding on
page 18 and Test Gun Resistance
on page 30.
Resistance must be 1 megohm or
less. Clean workpiece hangers.
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