26 308442
Electrical Tests
The performance and safety of the spray gun are
directly affected by the condition of the electrical
components contained inside the gun. The following
electrical tests can be used to determine the condition
of the power supply (27) and the resistor stud (15), as
well as the continuity of the electrical path between the
components.
Flush the gun fluid passages with solvent and air. To
get an accurate reading, the fluid hose must not have
any fluid in it.
Use part no. 241079 megohmmeter (L) and an applied
voltage of 500 volts to complete these electrical tests.
Connect the leads as shown.
WARNING
FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD
Megohmmeter P/N 241079 is not ap-
proved for use in a hazardous area. To
reduce the risk of sparking, do not use
the megohmmeter to do electrical tests
unless:
The gun has been removed from the
hazardous area (see page 28 to re-
move gun);
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 con-
tainers or fumes from spraying).
Failure to follow this warning could cause fire,
explosion, electric shock and result in serious injury
and property damage.
Test Gun Resistance
(See Fig. 16)
Measure the resistance between the end of the elec-
trode (13) and the gun body (29). The resistance
should be between 329 to 401 megohms. If the resis-
tance is outside the specified range, go to the next
test. If the resistance is correct, refer to Electrical
Troubleshooting on page 25 for other possible
causes of poor performance.
03898B
Fig. 16
13
L
29
