Rectifying faults
Warnings
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099-005630-EW501
02.03.2021
Unstable arc
Material inclusions in the tungsten electrode due to contact with filler material or workpiece
Regrind or replace the tungsten electrode
Incompatible parameter settings
Check settings and correct if necessary
Pore formation
Inadequate or missing gas shielding
Check shielding gas setting and replace shielding gas cylinder if necessary
Shield welding site with protective screens (draughts affect the welding result)
Use gas lens for aluminium applications and high-alloy steels
Unsuitable or worn welding torch equipment
Check size of gas nozzle and replace if necessary
Condensation in the gas tube
Purge hose package with gas or replace
7.2 Warnings
Depending on the display options of the machine display, a warning message is displayed as follows:
Display type - machine control
Display
Graphic display
two 7-segment displays
one 7-segment display
The cause of the warning is indicated by a corresponding warning number (see table).
• In case of multiple warnings, these
are displayed in sequence.
• Document machine warning and inform service personnel, if required.
Warning
Possible cause / remedy
1
Excess temperature
A shutdown is imminent due to excess temperature.
2
Half-wave failures
Check process parameters.
3
Welding torch cooling warning Check coolant level and top up if necessary.
4
Shielding gas
Check shielding gas supply.
5
Coolant flow
Check min. flow rate.
[2]
6
Wire reserve
Only a small amount of wire is left on the spool.
7
CAN bus failure
Wire feeder not connected, automatic circuit-breaker of wire
feed motor (reset the tripped automatic circuit-breaker by actu-
ating).
8
Welding circuit
The welding circuit inductance is too high for the selected
welding task.
9
WF configuration
Check WF configuration.
10
Partial inverter
One of several partial inverters is not supplying welding current.
11
Excess temperature, coolant
[1]
Check temperature and switching thresholds.
[2]
12
Welding monitor
The actual value of a welding parameter is outside the specified
tolerance field.
13
Contact error
The resistance in the welding circuit is too high. Check earth
connection.
