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TROUBLESHOOTING
The following operation requires sufficient professional knowledge on electric aspects and
comprehensive safety knowledge. Make sure the input cable of the machine is disconnected
from the electricity supply and wait for 5 minutes before removing the machine covers.
Before any welding and cutting machines are dispatched from the factory, they have already been
checked thoroughly. The machine should not be tampered with or altered. Maintenance must be carried
out carefully. If any wire becomes loose or is misplaced, it maybe potentially dangerous to the user!
There are dangerous voltages present within this plasma power supply unit. Only professionally trained
maintenance personnel should repair the machine!
Ensure the power is disconnected before working on the machine. Always wait 5 minutes after power
switch off before removing the panels.
Plasma cutting problems
The proper installation, application and operation of plasma arc cutting equipment can save many man
hours and reduce costs which will give you the promised cut quality and longer consumable parts life.
Cut quality issues or poor consumable life are generally the most experienced problems seen with plasma
cutting systems and more often than not are caused by the same thing, for example, low or too high air
pressure, low air flow, water or oil in the supply airline will all give you poor cut quality and premature
consumable wear. It’s often difficult to diagnose cutting issues without understanding the machines use
and setup and there are various questions that need to be asked to be able to give the best advice.
Below is listed a few pointers to help you on your way to obtaining consistently good cut quality:
• Ensure your mains power supply is suited to the plasma cutting machines specifications.
• Ensure the supplied gases or air supply is in keeping with the requirements of the plasma machine.
• Ensure your plasma machines amperage setting matches the cutting tips amperage.
• Clean and service the plasma machine and torch regularly, it is important that the operator watch the
torch for signs of contamination or worn consumables being used.
Description of fault
Possible cause
Mains power switch is on,
although the power indicator
doesn’t light up.
Check input power that it is turned on.
Check the input power fuse.
Check the input cable plug and connections.
Check the ON/OFF switch for function and continuity.
Primary power switch is on, but
the cooling fan does not work.
Check fan is not being blocked by debris.
Check fan for functionality.
Check fan supply.
No air flow at torch when either
torch trigger is pressed or air
purge switch is activated.
Check the compressor.
Check all the input air connections and fittings.
Internal connection is disconnected or loose.
Check the purge switch for functionality.
Overheat LED lit.
Machine operated outside duty cycle, allow the machine to cool and the unit will reset
automatically.
Fan not working - check for obstruction blocking the fan.
Pilot arc does not initiate when
the torch switch is activated.
Gas pressure too low to the machine.
