ESAB EPP-200 Instruction Manual page 253

SECTION 6
SECTION 6
Problem Problem Problem Problem
LEDX on MOD1 not ON LEDX on MOD1 not ON
LEDX on MOD1 not ON LEDX on MOD1 not ON
LEDX on MOD2 not ON LEDX on MOD2 not ON LEDX on MOD2 not ON LEDX on MOD2 not ON
LEDX on MOD2 not ON when LEDX on MOD2 not ON when LEDX on MOD2 not ON when LEDX on MOD2 not ON when
torch switch is depressed or start torch switch is depressed or start
torch switch is depressed or start torch switch is depressed or start
signal is sent signal is sent signal is sent signal is sent
Arc does not transfer to work. Arc does not transfer to work.
Arc does not transfer to work. Arc does not transfer to work.
(Open Circuit Voltage is between (Ope n Circuit Voltage is between
(Ope (Ope n Circuit Voltage is between n Circuit Voltage is between
315 and 355. Pilot arc IS 315 and 355. Pilot arc IS
315 and 355. Pilot arc IS 315 and 355. Pilot arc IS
present.) present.)
present.) present.)
Arc does not transfer to work. Arc do es not transfer to work.
Arc do Arc do es not transfer to work. es not transfer to work.
(Open Circuit Voltage is between (Open Circuit Voltage is between
(Open Circuit Voltage is between (Open Circuit Voltage is between
315 and 355. Pilot arc is NOT 315 and 355. Pilot arc is NOT 315 and 355. Pilot arc is NOT 315 and 355. Pilot arc is NOT
present.) present.) present.) present.)
Schematics and Wiring Diagrams on 11" x 17" paper are included
Possible Cause Possible Cause Possible Cause Possible Cause
1) Open connection between the
console WORK connector and the
workpiece.
1) Pilot arc fuses F1 and/or F2 are
open.
2) Bad pilot arc contactor.
3) Bad K3.
4) Bad PCB1 in MOD2.
5) Nozzle to Electrode short in
torch.
6) Bad control PCB
7) No preflow signal from CNC.
8) Current setting to low
9) Contaminated or worn electrode.
NOTE:
inside the back cover of this manual.
253
TROUBLESHOOTING
Troubleshooting
Corrective Action Corrective Action Corrective Action Corrective Action
1) a) Check continuity of WORK
cable and clamp
b) Attach clamp to workpiece
c) Ground work table to earth
ground
1) Replace F1 and/or F2.
2) Replace pilot arc contactor.
3) Replace K3
4) Replace PCB1 in MOD2.
5) Disconnect torch from console.
Check for open between pilot
arc and torch leads. Repair if
shorted.
6) Replace control PCB.
7) Bad PCB1. Bad MOD1 PCB1.
8) Readjust Current setting. Torch
to high above workpiece.
9) Replace electrode.
6-5