P40 Plasma Cutting Machine
10
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P a g e
Symptom Solution
The cutting torch fails to ignite the
arc, when press on the torch switch.
air feed intermittently
The electrode or nozzle improper
installation, turn off the power source,
install the electrode or nozzle, and screw
shield cup down properly, then turn on the
power source
Power lamp and temperature lamp
on.
1. Air flow blocked, check for blocked air
flow around the unit and correct condition.
2. Fan blocked, check and correct condition.
3. Unit is overheated, let unit cool down for
at least 5 minutes. Make sure the unit has
not been operated beyond Duty Cycle limit,
refer to technology parameters in Section 2.
4. Input voltage over the normal range,
choose the proper voltage , refer to
technology parameters in the Section 2.
5. Faulty components in unit, return for
repair or have qualified technician repair
per Service Manual
No cutting output; Torch activated,
power source on ; Gas flows; Fan
operates
1. Torch not properly connected to power
supply, check that torch leads are properly
connected to power supply.
2. Work cable not connected to work piece, or
connection is poor, make sure that work cable
has a proper connection to a clean, dry area of
the workpiece.
3. Faulty components in unit, return for repair or
have qualified technician repair per Service
Manual.
4. Faulty Torch, return for repair or have
qualified technician repair.
Low cutting output
1. Incorrect setting of CURRENT (A)
control, check and adjust to proper setting.
2. Faulty components in unit, return for
repair or have qualified technician repair.
Difficult Starting
Worn torch parts (consumables), shut off input
power. Remove and inspect torch shield cup, tip,
