Graco 247936 Manual De Usuario

Electrical components inside the gun affect performance 
and safety. The following procedures test the condition 
of the power supply (18), barrel (16) and charging probe 
(31), and electrical continuity between components.

Use megohmmeter Part No. 241079 (AA) and an 
applied voltage of 500 V. Connect the leads as shown.

Measure resistance between the charging probe tip 
(BB) and the air swivel (35) (see F

. 8.); it should be 

90-130 megohms. If outside this range, go to the next 
test. If in range, refer to Gun Repair on page 27 for 
other possible causes of poor performance. 

Measure resistance between the air swivel (35) and the 
charging probe socket (CC) (see F

. 9); it should be 

70-95 megohms. If outside this range, check the power 
supply and barrel resistance. If in range, test the charg-
ing probe resistance. 

Measure resistance between the metal spring in the 
charging probe (DD) and the charging probe tip (BB) 
(see F

. 9); it should be 15-30 megohms. If outside this 

range, replace the charging probe. If in range, inspect 
the spring and barrel socket for possible causes of poor 
continuity. Reassemble the charging probe and retest 
the gun resistance.

Megohmmeter Part No. 241079 (AA-see F

. 8. 

through F

. 12.) is not approved for use in a hazard-

ous areas. 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, explo-
sion, and electric shock and result in serious injury 
and property damage.

AA

35

BB

ti1468ax

ti13731

AA

35

CC

ti13732

AA

BB

DD