HP GRACO OR PRO TI1681A 사용자 설명서

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.

1.

Prepare the gun for service as instructed on page 
41.

2.

Measure resistance between the electrode needle 
tip (29) and the air swivel (35); it should be 117-137 
megohms. If outside this range, go to the next test. If 
you still have problems, refer to Voltage Loss Trou-
bleshooting on page 34 for other possible causes 
of poor performance, or contact your Graco distribu-
tor. 

Megohmmeter Part No. 241079 (AA-see 
F

. 17.) is not approved for use in a haz-

ardous area. To reduce the risk of sparking, 
do not use the megohmmeter to check elec-
trical 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.

TI1688B

AA

35

29