7.1 Pilot arc "misfires" or circuit was not completed.
If the electrode is excessively worn when the the torch
trigger is pressed, the gas flows but the pilot arc will not
start. Inspect and change the consumables as
necessary. Also inspect the torch lead for damage. After
the problem has been corrected pull the trigger to reset
the blinking LED. See Inspect Consumables, in this
section.
5-6
powermax
380
Operator Manual
0
MAINTENANCE AND PARTS
Problem
Cause / Solution
8. The POWER ON LED is illuminated and the
TEMP LED is illuminated.
8.1 Power supply is too hot.
Leave the power supply ON, for 15 minutes or until
TEMP LED is extinguished, to allow the fan to cool the
power supply. Reduce amperage or duty cycle before
cutting.
8.2 Power supply is too cold.
If the ambient temperature is below -31° F (-35° C) the
TEMP LED will light. Move the power supply to a
warmer location.
5. The POWER ON LED is illuminated
and the GAS PRESSURE LED is
blinking.
5.1 The gas supply was interrupted.
If the gas pressure drops below 40 psi after the torch
trigger is pressed the GAS PRESSURE LED will
blink. Check the torch lead and air hose from the gas
supply for pinched hoses or obstructions. Check that the
gas pressure has been set correctly. See Plasma Gas
Supply, Section 3.
6. The POWER ON LED is illuminated
and the TORCH CAP LED is
illuminated.
6.1 Torch consumables are loose or removed from the
torch.
Turn power supply OFF and tighten or install torch
consumables. See Installing Torch Consumables,
Section 4.
If the torch consumables are loose or are removed while
the power supply is ON, turn OFF the power supply,
tighten the consumables and then turn the power supply
ON to clear this fault.
7. The POWER ON LED is illuminated
and the TORCH CAP LED is blinking.
AC
AC
ON
AC
AC
ON
ON
AC
AC
ON
AC
AC
ON
ON
Basic Troubleshooting (continued)
4. The POWER ON LED is illuminated
and the GAS PRESSURE LED is
illuminated.
4.1 The gas supply is not connected to the power
supply or is turned.
Check that the gas is connected to the power supply
and turned on.
4.2 The incoming gas pressure is too low.
Set incoming gas pressure to 90–120 psi (6.2–8.3 bar).
Check that there are no leaks in the gas supply line.
AC
AC
ON
ON
