TroubleshooTing and sysTem TesTs
5-34
powermax
65/85
Service Manual
Problem
Meaning
Causes
Solution
When pressing the torch
trigger or start switch,
gas flows from the torch,
but the torch does not
fire or fires for only a
short duration.
Worn or damaged
consumables.
• Overused or
improperly
installed
consumables.
• Replace consumables.
Damaged torch or
lead assembly.
• Electrode is not
moving properly
in the torch or
the torch lead is
damaged.
• Perform Test 6.
Insufficient or
excessive gas flow.
• Gas pressure is
too high or too
low, or the gas
supply is leaking
or restricted.
• Ensure the inlet pressure is 85 to 135
PSI (5.9 to 9.3 bar).
• Repair air leaks or restrictions.
• Manually adjust the gas pressure on the
power supply.
Poor air quality.
• Air filter element
is dirty.
• Moisture or
contaminants in
the gas supply
line.
• Replace the air filter element.
• Add appropriate filtration and purge the
lines with nitrogen to flush out oil and
moisture.
Insufficient input
power.
Undersized
electrical supply
installation:
• Breaker or fuse.
• Supply wire.
• Extension cord.
• Verify that the external electrical power
is installed according to Section 2,
Specifications
.
Faulty inverter IGBT
• Faulty inverter
IGBT.
• Use an IGBT tester to check the inverter
IGBT.
Capacitor voltage
imbalance on the
power board.
• Faulty resistors
on the power
board (PCB3)
or faulty bulk
capacitor(s).
• Perform Tests 1, 2, or 3.
• If the voltage across the capacitors is
not balanced, replace the power board
(PCB3).
Содержание Powermax 65
Страница 1: ...Service Manual 807120 Revision 1 Plasma arc cutting systems ...
Страница 10: ...vi powermax65 85 Service Manual ...
Страница 16: ...Table of Contents xii powermax65 85 Service Manual ...
Страница 32: ...Specifications 1 16 powermax65 85 Service Manual ...
Страница 182: ...Troubleshooting and System Tests 5 56 powermax65 85 Service Manual ...
Страница 200: ...Component Replacement 6 18 powermax65 85 Service Manual 1 4 6 2 3 3 3 5 DSP back view DSP front view ...
Страница 216: ...Component Replacement 6 34 powermax65 85 Service Manual ...
Страница 244: ...Wiring Diagrams 8 2 powermax65 85 Service Manual ...
Страница 247: ...8 5 Electrical schematic diagram CSA ...
Страница 248: ...8 6 Electrical schematic diagram CE ...