Electrical Tests
18 309292L
Electrical Tests
Electrical components inside the gun affect performance
and safety. The following procedures test the condition
of the power supply (18) and electrode (29), and electri-
cal continuity between components.
Use megohmmeter Part No. 241079 (AA) and an
applied voltage of 500 V. Connect the leads as shown.

Test Gun Resistance

1. Flush and dry the fluid passage.
2. Measure resistance between the electrode needle
tip (29) and the air swivel (35); it should be 117-137
megohms for the PRO Xs3, and 156-180 megohms
for the PRO Xs4. If outside this range, go to the next
test. If in range, refer to Electrical Troubleshooting
on page 23 for other possible causes of poor perfor-
mance.
Fig. 6. Test Gun Resistance
WARN ING
Fire, Explosion, and Electric Shock Hazard
Megohmmeter Part No. 241079 (AA-see
FIG. 6.) is not approved for use in a hazard-
ous area. To reduce the risk of sparking, do
not use the megohmmeter to check electri-
cal 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.
TI1468A
AA
35
29