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Electrical Test
s
Electrical Tests
Use the follow
ing procedures to test the condition
of the power su
pply and gun body, and electrical
continuity be
tween components.
NOTICE
The gun body resistor cartridge is part of the body
and is not replaceable. To avoid destroying the gun
body, do not attempt to remove the body resistor.
Use megohmmeter Part No. 241079 (AA) with an
applied voltage of 500 V. Connect the leads as
shown.
Megohmmeter Part No. 241079 (AA-see Fig.
17) is not approved for use in a hazardous area.
To reduce the risk of sparking, do not use the
megohmmeter to check electrical grounding
unless:
• The gun has been removed from the hazardous
area;
• Or all spraying devices in the hazardous area
are turned off, ventilation fans in the hazardous
area are operating, and there are no flammable
vapors in the area (such as open solvent
containers or fumes from spraying).
Failure to follow this warning could cause fire,
explosion, and electric shock and result in serious
injury and property damage.
Test Gun Resis
tance
1. Flush and dry the fluid passage.
2. Measure resistance between the electrode
needle tip (25a) and the air swivel (21). The
resistance should be:
• 106–150 meg
ohms for 60 kV guns
• 150–195 meg
ohms for 85 kV guns
If outside t
his range, go to
Test Power
Supply Resistance, page 33.Ifin
range, see
Electrical Troubleshooting, page 37 for
other poss
ible causes of poor performance.
Figure 17 Test Gun Resistance
32 3A2495C