Taurus TIG200ACDC-HF-P - Troubleshooting

MAINTENACE & TROUBLESHOOTING
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5.2 Troubleshooting
⚫ Before shipment, all welding machines are tested and passed for operation. Any
modifications to the machine may not be allowed or authorised.
⚫ Regular maintenance is important to ensure successful machine operation and to obviate
potential hazards.
⚫ Machine overhaul should only be undertaken by authorised technicians. For further
information contact your Taurus agent or supplier.
Follow the overhauling chart below for simple troubleshooting solutions:
S/N
Troubles
Reasons
Solution
1
Power turned on, fan works, but
power pilot lamp does not light
up.
Pilot light fused or insufficient connection.
Check end repair Pr7.
Power transformer is broken.
Repair or change transformer.
Control PC board failure.
Repair or change Pr4.
2
Power turned on, power lamp
lights up, but fan not working.
Obstacle in fan.
Clear out obstacle.
Fan-start capacitor defective.
Replace capacitor.
Fan motor damaged.
Replace fan.
3
Power turned on, power lamp
doesn't light up, fan not working.
No input power.
Check power supply.
Fuse inside the machine has blown.
Replace the 3A fuse.
4
Display number not active.
LED display is defective.
Replace LED display.
5
Max and min displayed values
are not corresponding to set
values.
Refer to 3.1 Max value not corresponding.
Adjust potentiometer Imin on power
board.
Refer to 3.1 Min value not corresponding.
Adjust potentiometer Imax on power
board.
6
No no-load voltage output
(MMA).
Machine is faulty.
Check main circuit and Pr4.
7
Arc cannot be
ignited (TIG)
There is spark
on the HF
igniting board.
The welding cable is not connected to the
output of the machine.
Connect the welding cable.
Welding cable is damaged.
Repair or change the welding cable.
Earth cable connection unstable.
Check earth cable connection.
Welding cable too long.
Use appropriate cable.
Oil or dust on workpiece.
Clean-off oil or dust.
Gap between electrode and workpiece too
great.
Reduce gap to approximately 3mm.
There is no
spark on the
HF igniting
board.
HF igniting board defective.
Repair or change Pr8
Discharger distance too short
Adjust distance to approximately 0.7mm
Malfunction of welding gun switch.
Check control cable and aero switch.