Fronius TTB 80 G Instructions De Service page 93

No shielding gas
All other functions present
Cause: Gas cylinder empty
Remedy: Change gas cylinder
Cause: Gas pressure regulator faulty
Remedy: Replace gas pressure regulator
Cause: Gas hose kinked, damaged, or not attached
Remedy: Attach and straighten gas hose. Replace faulty gas hose
Cause: Welding torch faulty
Remedy: Replace welding torch
Cause: Gas solenoid valve faulty
Remedy: Contact service team (have gas solenoid valve replaced)
Poor-quality weld properties
Cause: Incorrect welding parameters
Remedy: Check settings
Cause: Incorrect ground connection
Remedy: Check ground connection and terminal for polarity
Welding torch gets very hot
Cause: Welding torch is inadequately dimensioned
Remedy: Observe duty cycle and load limits
Cause: For water-cooled systems only: Coolant flow too low
Remedy: Check water level, water flow rate, water contamination, etc. Coolant pump
blocked: Switch on shaft of coolant pump at the gland using a screwdriver
Cause: For water-cooled systems only: "Cooling unit Ctrl" parameter is set to
"OFF".
Remedy: In the Setup menu, set the "Cooling unit Ctrl" parameter to "Aut" or "ON".
93