TroubleshooTing and sysTem TesTs
powermax
65/85
Service Manual
5-35
Problem
Meaning
Causes
Solution
Arc goes out while
cutting or intermittently
will not fire.
The arc lost contact
with the workpiece.
• The work lead
or work lead
connection may
be faulty.
• The material
being cut may
require the use of
continuous pilot
arc mode.
• If you are cutting expanded metal, grate,
or any metal with holes, set the mode
switch to continuous pilot arc mode.
• Check for loose connections at the work
clamp and at the power supply.
• Reposition the work lead on the
workpiece.
• Clean the cutting surface to ensure a
better connection with the work lead.
Faulty fan.
• The fan could be
overloading the
flyback circuit.
• Perform Tests 5 and 11.
The cut quality is poor
or the cut does not sever
the metal.
The consumables
are worn, there is
a poor work lead
connection, the
output from the
power supply is
too low, the power
board is producing
low current, or the
selected cutting
mode is incorrect..
• The consumables
need to be
replaced
• Inspect the consumables and replace if
necessary.
• The work lead
may be damaged
or not properly
connected to the
work piece
• Inspect the work lead for damage.
Reposition it and clean the work surface
to ensure good contact.
• The amperage
adjustment knob
may be set too
low.
• Increase the amperage as needed.
• The power board
(PCB3) may be
faulty.
• Perform Tests 1, 2, and 3 and replace
any faulty components.
The cutting mode
switch is in the
wrong position
for the cutting
operation.
• Ensure the cutting mode switch is in the
correct position.
• Faulty pilot arc
IGBT.
• Turn the power OFF, remove the
consumables, and check the resistance
between the cathode and the work
clamp. If the resistance is less than
5 kΩ, check the resistance across the
pilot arc IGBT (two screws on 08). If the
resistance is less than 5 kΩ, replace the
pilot arc IGBT.
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 ...