ESAB Cutmaster 120 - Page 53

ESAB CUTMASTER 120
Manual 0-5380 SERVICE
5-5
Problem - Symptom Possible Cause Recommended Action
FAULT & 80 PSI
indicators flashing.
Gas flow is cycling ON
and OFF.
1. Torch shield cup is loose.
2. Torch tip, electrode or starter
cartridge missing.
3. Torch starter cartridge is stuck.
4. Open conductor in torch leads.
5. Problem in the torch and leads
switch circuit.
6. Failed components in unit.
1. Tighten shield cup by hand. Do not overtighten.
2. Turn OFF power supply. Remove shield cup. Install missing parts.
3. Turn OFF power supply. Bleed down system pressure. Remove
shield cup, tip and starter cartridge. Check starter cartridge lower
end fitting for free movement. Replace if fitting does not move freely.
4. Replace torch and leads or return to authorized service center for
repair or replacement.
5. Replace torch and leads or return to authorized service center for
repair or replacement.
6. Return to authorized service center for repair or replacement.
Nothing happens when
torch switch or remote
switch is closed (Or
CNC START signal is
active) No gas flow,
DC LED OFF.
1. Problem in the torch and leads
switch circuit (Remote pendant
switch circuit).
2. CNC Controller device not providing
Start signal.
3. Failed components in unit.
1. Take Torch and Leads (Remote Pendant) to Authorized Repair
Facility.
2. Contact Controller manufacturer.
3. Return to authorized service center for repair or replacement.
FAULT and 85 PSI
indicators flashing.
1. Upper O-Ring on torch head is in
wrong position.
2. Torch starter cartridge is stuck.
3. Worn or faulty torch parts.
4. Shorted Torch.
5. Temporary Short indicated by 5
blinks per second.
6. Power Supply Failure (Standard
rate of blinking)
1. Remove shield cup from torch; check upper O-Ring position;
correct if necessary.
2. Turn OFF power supply. Bleed down system pressure. Remove
shield cup, tip and starter cartridge. Check starter cartridge lower
end fitting for free movement. Replace if fitting does not move freely.
3. Inspect torch consumable parts. Replace if necessary.
4. Replace torch and leads or return to an authorized service center
for repair.
5. Release torch switch and reactivate.
6. Return to authorized service center for repair or replacement.
No Fault lights ON, no
arc in torch.
1. Failed components in unit. 1. Return to an authorized service center for repair.
Fault and 90 PSI
indicators flashing
1. Internal Error 1. Turn the ON / OFF switch OFF then back ON again. If that does not
clear the fault, return to an authorized service center for repair.
Pilot arc is ON but
cutting arc will not
establish
1. Work cable not connected to work
piece.
2. Work cable/connector broken.
3. Failed components in unit.
1. Connect work cable.
2. Replace work cable.
3. Return to an authorized service center for repair.
Torch cutting is
diminished
1. Incorrect current setting.
2. Worn torch consumables.
3. Poor work cable connection to
work piece.
4. Torch being moved too fast.
5. Excessive oil or water in torch.
6. Failed components in unit.
1. Check and adjust to proper setting.
2. Check torch consumables and replace as needed.
3. Check the connection of the Work Lead to the work piece.
4. Reduce cutting speed.
5. Refer to "Check air quality" in section 3 Torch.
6. Return to an authorized service center for repair.