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ELECTRICAL TROUBLESHOOTING CHART
PROBLEM
CAUSE
SOLUTION
Poor wrap-around.
Parts poorly grounded.
Clean hangers, check for proper
ground on conveyer or track.
High exhaust velocity.
Reduce within code limits.
High fluid pressure.
Reduce pressure.
Fluid viscosity.
Check supplier for proper fluid for
electrostatic spray.
Low or no electrostatic voltage.
See below.
Faulty gun resistance.
Check; resistance should be 450
megohms
±
20 from the end of the
resistor electrode of gun to the end
of the High Voltage Cable, where it
connects to the Power Supply. If
resistance is lower check resistance
of resistor (62).
Improper distance between gun and
Adjust spraying distance to
workpiece.
203-305 mm (8-12 in.).
Too high atomizing air pressure.
Reduce air pressure.
Too low fluid resistivity.
Check fluid resistivity with paint
meter and probe (refer to instruction
manual 307-263).
Faulty power supply resistance.
Check power supply resistance. See
page 12.
Faulty needle electrode assembly.
Replace needle electrode assembly.
Low or no electrostatic
Power Supply is off.
Line Power Switch is OFF, should be
wrap.
turned ON.
Fuse on inside of High Voltage
Replace fuse.
Power Supply is blown.
Power line voltage is incorrect.
Adjust for correct voltage.
Low or no electrostatic
Faulty High Voltage Power Supply.
See instruction manual included with
wrap. (Spraying voltage
High Voltage Power Supply.
light does not come on).
Low or no electrostatic
Gun held too close to part being
Increase distance between part and
wrap. (Spraying voltage
painted.
gun.
light comes on then goes
off).
Fluid is too conductive.
Lower conductivity of fluid.
Electrical short in the High Voltage
Replace the High Voltage Cable.
Cable.
Electrical short in gun.
Take gun apart and visually check the
resistor holder, the resistor well and
the needle well in the gun barrel for
dirt and/or damage. Clean and
replace parts as required.
Faulty High Voltage Power Supply.
See instruction manual included with
High Voltage Power Supply.
Low or no electrostatic
Faulty resistor in the resistor elec-
Replace the resistor electrode
wrap. (Spraying voltage
trode assembly.
assembly.
light is on all of the time).
Continued on page 11.
Resistor of gun not making a good
See Resistor Assembly Replacement
connection with contact inside of
in this manual.
gun body.
High Voltage Cable not making
Replace conductive spring as required.
good contact with resistor of gun.
Cable insulation punctured.
Replace cable.
10 307-896
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