Fronius TransSteel 2500c, Operating Instructions Manual

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96
Nothing happens when the torch trigger is pressed
Power source mains switch is on, power source ON indication is lit up on the power source,
indications on wire-feed unit are not lit up
Cause: The interconnecting hosepack is faulty or not connected properly
Remedy: Check interconnecting hosepack
No welding current
Mains switch is on, one of the overtemperature service codes "to" is displayed. Detailed
information on the service codes "to0" to "to6" can be found in the section "Displayed ser-
vice codes".
Cause: Overload
Remedy: Take the duty cycle into account
Cause: Thermostatic safety cut-out has tripped
Remedy: Wait until the power source automatically comes back on after the end of the
cooling phase
Cause: Limited supply of cooling air
Remedy: Remove air filter on the rear of the housing from the side and clean. Ensure
that the cooling air ducts are accessible.
Cause: The fan in the power source is faulty
Remedy: Contact After-Sales Service
No welding current
Mains switch is ON and indicators are lit up
Cause: Grounding (earthing) connection is incorrect
Remedy: Check the grounding (earthing) connection for correct polarity
Cause: There is a break in the power cable in the welding torch
Remedy: Replace the welding torch
No protective gas shield
All other functions are OK
Cause: Gas cylinder is empty
Remedy: Change the gas cylinder
Cause: The gas pressure regulator is faulty
Remedy: Replace the gas pressure regulator
Cause: Gas hose is not fitted or is damaged
Remedy: Fit or change the gas hose
Cause: Welding torch is faulty
Remedy: Change the welding torch
Cause: Gas solenoid valve is faulty
Remedy: Contact After-Sales Service