Hypertherm Powermax30 XP Service Manual User Manual

Page 66

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Powermax30 XP Service Manual 808150 Revision 1

5 – Troubleshooting and System Tests

When you pull the torch
trigger, gas flows from the
torch, but the torch does
not fire or fires only for a
short period of time.

• The consumables,

torch, or torch lead
are not functioning
correctly.

• The gas pressure is

too low.

• The gas supply quality

is poor.

• There is a voltage

imbalance on the
power board.

• The consumables are

worn or damaged.

• The torch or torch lead

is damaged.

• The gas supply line is

restricted.

• The air filter element is

dirty.

• The power board is

faulty.

• Inspect the consumables, torch,

and torch lead, and replace if
necessary.

• Inspect the gas supply line for

restrictions or damage.

• Inspect the air filter element,

and replace if necessary. (See
Replacing the air filter bowl and
air filter element on page 148.)

• Verify that the gas supply is

providing at least 4.5 bar
(65 psi).

• Perform

Test 3 – VBUS and

voltage balance on page 78.

Arc goes out while cutting
or intermittently will not fire.

• The work lead

connection is poor.

• The work lead is

damaged or not
properly connected to
the workpiece.

• Inspect for loose connections

at the ground clamp and at the
power supply, and repair if
necessary.

• Reposition the work lead on the

workpiece.

• Clean the cutting surface to

make a better connection with
the work lead.

When you pull the torch
trigger, the pilot arc starts
but then extinguishes
before the normal
5-second timeout period.