Jasic TIG Series - TROUBLESHOOTING; General Faults and Solutions

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TROUBLESHOOTING
The following operaon requires sucient 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 arc welding 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 potenally dangerous to the user!
Only professional maintenance personnel should repair the machine!
Ensure the power is disconnected before working on the machine. Always wait 5 minutes aer power
switch o before removing the panels.
Descripon of fault Possible cause
The power LED is OFF and the fan is not
funconing
The primary supply voltage has not been switched ON
or input fuse has blown
The welding power source input switch is switched
OFF
Loose connecons internally
The fault LED is ON and the fan is running The machine is under over-heang protecon status
and will recover automacally aer the welding
machine has cooled down
Check incoming mains supply to ensure it is within
230V +/- 15%
No high frequency is produced Process selecon switch is set to manual metal arc
(MMA)
Torch trigger switch lead is disconnected or switch/
lead is faulty
High frequency spark gap too wide or short circuited
Welding current reduces when welding Poor work lead connecon to the work piece
TIG electrode melts when arc is struck TIG torch is connected to the (+) VE terminal
No gas ow when the TIG torch trigger
switch is depressed
Empty gas cylinder
Gas regulator is turned o
Gas hose is blocked or cut
Torch trigger switch lead is disconnected or switch/
lead is faulty
Dicult to ignite the arc The arc ignion current is too low or the arc
ignion me is too short
The electrode holder becomes very hot The rated current of the electrode holder is smaller
than its actual working current, replace it with a
higher rated current capacity
Excessive spaer in MMA welding The output polarity connecon is incorrect, exchange
the polarity
Other malfuncon Contact your supplier