Carlisle Ransburg Service Manual page 25

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FAULT TROUBLESHOOTING GUIDE
Fault
Feedback Fault
(FF)
Voltage Cable
Fault (UC)
CP-13-03-R4 (05/2020)
Description
The Feedback Fault indicates there is
no current feedback or it is incorrect. It
typically occurs with the high voltage on.
The Voltage Feedback Fault indicates
the cascade drive signal is not present.
It typically occurs when high voltage is
triggered.
(Cont.)
Securely attach a ground wire to the applicator
electrode.
Set the high voltage to maximum and short the KV
test jumper.
The current reading on the control unit should rise up
to the maximum current output. If it does not, send
the applicator in for repair.
Turn off the voltage controller and remove the high
voltage cable from the voltage controller.
Turn on the power and place a jumper across the
KV Test Jumper. If the fault occurs, send the voltage
controller in for repair. If no fault occurs, continue.
Either the high voltage cable or if using a hand gun, the
gun resistor tube has failed. If available, replace the
high voltage cable, or continue to test the resistor tube.
To test the resistor tube, remove the resistor tube from
the gun and inspect for signs of burning or arcing.
Cracks or black marks indicate failure of the resistor
tube, indicating the resistor tube must be replaced.
Measure the resistance using a tri-meter connected
to the black end of the tube and screwdriver in the
other end. The measurement must be 150 to 170
Mega Ohms. Replace resistor tube if the reading is
not correct.
Replace high voltage cable or send applicator unit
in for repair.
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