Hypertherm Powermax 65 - Page 162

TroubleshooTing and sysTem TesTs
5-36 powermax 65/85 Service Manual
Problem Meaning Causes Solution
While in continuous pilot
arc mode, the pilot arc
extinguishes when you
move the plasma arc off
the work piece while still
pulling the torch’s trigger.
The continuous pilot
arc feature is not
working.
• The mode switch
may be set
incorrectly
• Verify that the mode switch is set to
continuous pilot arc.
• The power board
(PCB3) or the
control board
(PCB1) may be
faulty.
• Perform Tests 1, 2, and 3 and replace
the power board (PCB3) or control
board PCB1) if necessary.
The arc extinguishes, but
re-ignites when the torch
trigger is pressed again.
The consumables
are worn or
damaged, the gas
filter element is
contaminated, or the
input gas pressure
is not at the proper
level.
• The consumables
need to be
replaced.
• Replace the consumables as needed.
• The gas filter
element needs to
be replaced.
• Replace the gas filter’s element if it is
contaminated.
• The gas pressure
is too high or too
low.
• Manually adjust the gas pressure as
needed.
The arc sputters and
hisses.
The gas filter element
is contaminated, or
the input gas line
contains moisture.
• The gas filter
element needs to
be replaced.
• Replace the gas filter’s element if it is
contaminated.
• The input gas
supply needs to
be cleaned.
• Inspect the gas line for moisture. If
necessary, install or repair the gas
filtration to the power supply. See
Section 2, Power Supply Setup, for
more information.