Tweco 82 PlazMaster - Manual (Page 57)

PLAZMASTER 82
Manual 0-5096 5-5 SERVICE
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 start 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 start cartridge. Check start
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 Contoller 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 85 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" on page 3T-1.
6. Return to an authorized service center for repair.