Electrical Tests
Electrical Tests
Use the following procedures to test the condition of the power supply and gun body, and electrical continuity between 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
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 Resistance
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:
•
•
If outside this range, go to
Test Power Supply Resistance, page 33. If in range, see Electrical Troubleshooting, page 37 for other possible causes of poor performance.
Figure 17 Test Gun Resistance
32 | 3A2495C |