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the spray gun is directly af
the condition of the electrical components contained
the gun. The electrical tests below can
be used to
the condition of the
power supply (40) and the
stud (2) as well as the continuity
of the electrical
between the components.
megohmmeter 218–979 (see
applied voltage of 500 volts to complete these
tests. Connect the leads as shown.
Remove the gun from the manifold and bracket, as
instructed on page 18, before performing the electrical
reduce the risk
of sparking, which could cause
explosion, or electrostatic shock
and result in
, do not use the megohmmeter
in the hazardous area. Remove the gun from the
area before testing it.
Test Gun Resistance (See Fig 11 )
the resistance between the end of the
(28) and the gun body (39). The resistance should be
between 329 to 401 megohms. If the resistance is out-
side the specified range, go to the next test. If the
resistance is correct, refer to the Electrical
Troubleshooting Chart on page 15 for other possible
of poor performance.
Test Power Supply Resistance (See Fig
Remove the power supply (40) from the gun body (39).
the resistance from the power supply’
point (EE) to the contact inside of the power
ply seal (40d)
[the conductive rubber contact may be
recessed into the seal]
. See Fig 12 .
The resistance should be 297 to 363 megohms. If the
is outside the specified range,
the power sup
is defective and must be replaced. If the resistance
power supply is correct, proceed to the next test.
If you still have problems, refer to the Electrical
Troubleshooting Chart for other possible causes of
poor performance, or contact the nearest authorized