Hypertherm Powermax125 Service Manua - Manual (Page 136)

136 Powermax125 Service Manual 808070
8 – Troubleshooting and System Tests
0-40-2 Inverter IGBT module under
temperature
On On
For an over-temperature fault:
(480 V CSA units > 81° C [178° F],
600 V CSA and CE/CCC units
> 76° C [169° F])
• Leave the machine powered ON and
confirm that the fan is operating.
• Verify that adequate air flow around the
unit.
• Verify that the cover is placed with the
air fins on the fan side of the power
supply.
• If the duty cycle has been exceeded, let
the unit cool and work within the duty
cycle limits listed in
Basic System
Operations on page 39.
For an under-temperature fault (all units
< -30° C [< -22° F]):
• Move the unit to a warmer location.
• Perform Test 4 – Inverter temperature
sensor on page 154.
0-40-3 Inverter IGBT module over
temperature
0-50-0* Retaining cap off
On On
• Verify that proper consumables and
retaining cap are installed. Replace
damaged parts. Refer to
Hand Torch
Setup on page 51 or Machine Torch
Setup on page 67.
• Perform Test 8 – Torch cap switch on
page 161.
• If the consumables appear to be
installed correctly, the torch may be
damaged. Test with a known working
torch.
• After correcting the problem, perform a
cold restart.
0-nn-n
Fault
code
Description
Power
LED Fault
LED Fault
icon
Solutions