Hypertherm MAX200 Machine Torch Plasma Arc Cutting System User Manual
Page 116
MAX200
Instruction Manual
5-5
15
MAINTENANCE
Problem:
The green POWER ON indicator is illuminated, the torch switch is pressed and the DC ON
indicator illuminates, and there is high frequency, but there is no pilot arc.
Cause:
There is no high frequency at the torch.
Solution:
Check for a shorted torch, a damaged pilot arc lead, or loose lead connections.
Replace the torch or pilot arc lead or tighten the lead connections.
Cause:
The pilot arc relay CR1 is defective.
Solution:
Replace relay CR1.
Cause:
Control board PCB7 is defective.
Solution:
Replace board PCB7.
Problem:
The unit shuts itself off after it is turned on.
Cause:
The unit has overheated
Solution:
Wait for the unit to cool down.
Cause:
There is insufficient air or gas pressure.
Solution:
Check the gauge on the back panel. Increase the air or gas pressure to the unit.
Cause:
Auxilliary switches on the safety contactor are loose.
Solution:
Tighten the switches.
Problem:
The unit is not cutting well.
Cause:
The work clamp is not connected or it is broken.
Solution:
Connect or repair the work clamp.
Cause:
The torch is cracked.
Solution:
Replace the torch.
Cause:
The pilot arc relay CR1 is defective. Check for contacts that are welded shut
Solution:
Replace relay CR1.