User's Manual

Electrical Tests

22 313227C

Electrical Tests

Electrical components inside the gun affect performance

and safety. The following procedures test the condition

of the power supply (12), barrel (9) and external charg-

ing probe (2), and electrical continuity between compo-

nents.

Use megohmmeter Part No. 241079 (AA) and an

applied voltage of 500 V. Connect the leads as shown.

Test Total Gun Resistance

1. Flush and dry the fluid passage.

2. Measure resistance between the electrode needle

tip (2) and the gun body (15) or the turbine air inlet

fitting (TA); it should be 90-130 megohms. If outside

this range, remove the gun for service (page 28)

and go to the next test. If in range, refer to Electrical

Troubleshooting on page 27 for other possible

causes of poor performance.

Fire, Explosion, and Electric Shock Hazard

Megohmmeter Part No. 241079 (AA-see F

IG. 16

through F

IG. 20) 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.

FIG. 16. Test Gun Resistance

TI13432a

TI1577A