146 Powermax125 Service Manual 808070
8 – Troubleshooting and System Tests
Arc goes out
while cutting or
intermittently will
not fire.
The arc lost contact with the
workpiece.
• The work lead or
work lead connection
may be faulty.
• The material being
cut may require the
use of continuous
pilot arc mode.
• If you are cutting expanded metal,
grate, or any metal with holes, set the
mode switch to continuous pilot arc
mode.
• Check for loose connections at the
ground clamp and at the power
supply.
• Reposition the work lead on the
workpiece.
• Clean the cutting surface to allow a
better connection with the work lead.
Faulty fan. • The fan could be
overloading the
flyback circuit.
•Perform Test 5 – Flyback circuit (DC
minor voltages) on page 156 and
Test 11 – Fan on page 164.
Problem Meaning Causes Solution
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