Fronius TPS 320i, Operating Instructions Manual

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No welding current
mains switch is on and indicators are lit up
Cause: Grounding (earthing) connection is incorrect
Remedy: Check the grounding (earthing) connection and terminal for cor-
rect polarity
Cause: There is a break in the current cable in the welding torch
Remedy: Replace welding torch
Nothing happens when torch trigger is pressed
mains switch is on and indicators are lit up
Cause: The control plug is not plugged in
Remedy: Plug in the control plug
Cause: Welding torch or welding torch control line is faulty
Remedy: Replace welding torch
Cause: The interconnecting hosepack is faulty or not connected prop-
erly
Remedy: Check interconnecting hosepack
No protective gas shield
all other functions are OK
Cause: Gas cylinder is empty
Remedy: Change the gas cylinder
Cause: Gas pressure regulator is faulty
Remedy: Change the gas pressure regulator
Cause: The gas hose is not connected, or is damaged or kinked
Remedy: Connect/replace the gas hose, or straighten out kinks
Cause: Welding torch is faulty
Remedy: Change the welding torch
Cause: Gas solenoid valve is faulty
Remedy: Replace gas solenoid valve
Poor weld properties
Cause: Incorrect welding parameters
Remedy: Check the settings
Cause: Poor grounding (earthing) connection
Remedy: Ensure good contact to workpiece
Cause: Inadequate or no protective gas shield
Remedy: Check the pressure regulator, gas hose, gas solenoid valve,
torch gas connection, etc.
Cause: Welding torch is leaking