Graco Inc. 244399 Paint Sprayer User Manual


 
Electrical Tests
309291P 17
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 101-121
megohms. If outside this range, go to the next test. If
in range, refer to Electrical Troubleshooting on
page 22, for other possible causes of poor perfor-
mance.
Fig. 4. Test Gun Resistance
WARNING
Fire, Explosion, and Electric Shock Hazard
Megohmmeter Part No. 241079 (AA-see
F
IG. 4.) 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 haz-
ardous 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