ESAB EPP-200 Instruction Manual page 251

SECTION 6
6.4 Troubleshooting Guide
SECTION 6
6.4 Troubleshooting Guide
WARNING
WARNING
!
CAUTION
CAUTION
!
Problem Problem Problem Problem
Power switch is ON. Power LED Power switch is ON. Power LED
Power switch is ON. Power LED Power switch is ON. Power LED
is OFF. Fan is OFF. Pump is is OFF. Fan is OFF. Pump is is OFF. Fan is OFF. Pump is is OFF. Fan is OFF. Pump is
OFF. OFF. OFF. OFF.
Power switch is ON. Power LED Power switch is ON. Power LED
Power Power switch is ON. Power LED switch is ON. Power LED
in ON. Pump is OFF. Fan is ON. in ON. Pump is OFF. Fan is ON.
in ON. Pump is OFF. Fan is ON. in ON. Pump is OFF. Fan is ON.
Power LED is OFF. Pump is ON. Power LED is OFF. Pump is ON.
Power LED is OFF. Pump is ON. Power LED is OFF. Pump is ON.
Fan is ON. LEDs in power Fan is ON. LEDs in power
Fan is ON. LEDs in power Fan is ON. LEDs in power
modules are OFF modules are OFF modules are OFF modules are OFF
Plasma gas fault indicator is ON Plasma gas fault indicator is ON Plasma gas fault indicator is ON Plasma gas fault indicator is ON
High Voltages Can Cause Serious Injury or Death!
High Voltages Can Cause Serious
Voltages in plasma cutting equipment are high enough to cause
serious injury or death.
Injury or Death!
Only trained technicians should attempt diagnosis and repair of
Voltages in plasma cutting equipment are high
this machinery.
enough to cause serious injury or death.
Only trained technicians should attempt
diagnosis and repair of this machinery.
Avoid damaging your voltmeter.
Avoid damaging your voltmeter.
Disconnect the power from the high frequency generator before
checking voltages in the high frequency circuit.
Disconnect the power from the high frequency
generator before checking voltages in the high
frequency circuit.
Possi Possible Cause Possi Possi ble Cause ble Cause ble Cause
1) Bad Power switch S1.
2) Open Fuse F4.
3) Open Jumper at TB2.
1) Bad or open CB2.
2) Pump Motor Failed.
1) Bad or Open CB1.
1) Plasma gas pressure to console
is below 40 psi.
2) Bad pressure switch
3) Open wire between pressure
switch and PCB1.
251
TROUBLESHOOTING
Troubleshooting
Corrective Action Corrective Action Corrective Action Corrective Action
1) Check continuity of power
switch.
2) Check Fuse F4 and related
wiring
3) Check jumper and wiring of TB2
1) Reset CB2. Check wiring and
check free rotation of pump fan.
2) Replace Pump motor
1) a. Reset CB1
b. If CB1 fails to reset, check
wiring, bad T1, or PCB1.
1) Adjust gas pressure to proper
level for torch and application
2) Adjust (if adjustable type) or
replace pressure switch.
3) Check wiring between PS1 &
PS2 and PCB1 P1-9 and P1-10.