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Rectifying faults
Checklist for rectifying faults
only for XQ machine series
[1]
See technical data for values and other switching thresholds > see 8 chapter.
[2]
7.3
Checklist for rectifying faults
The correct machine equipment for the material and process gas in use is a fundamental
requirement for perfect operation!
Legend
Functional errors
Mains fuse triggers - unsuitable mains fuse
Set up recommended mains fuse > see 8 chapter.
Machine does not start up after switching on (device fan and possibly coolant pump have no function).
Connect the control cable of the wire feeder.
All machine control signal lights are illuminated after switching on
No machine control signal light is illuminated after switching on
No welding power
Phase failure > check mains connection (fuses)
Machine restarts continuously
Wire feeder without function
System does not start up
Make control lead connections and check that they are fitted correctly.
Loose welding current connections
Tighten power connections on the torch and/or on the workpiece
Properly fasten the contact tip and contact tip holder.
Collective interference signal light illuminates
Excess temperature, welding machine
Allow the machine to cool down whilst still switched on
Welding current monitoring device triggered (stray welding currents flowing across the protective e-
arth). The error must be reset by switching the machine off and on again.
Welding wire is touching electrically conductive casing parts (check wire guide, has the welding
wire sprung off the wire spool?).
Check for a correct mounting of the welding lead. Fit the feeder clamp of the welding lead as
close as possible to the arc.
Excess temperature signal light illuminates
Excess temperature, welding machine
Allow the machine to cool down whilst still switched on
Coolant error/no coolant flowing
Insufficient coolant flow
Check coolant level and refill if necessary
Air in the coolant circuit
Vent coolant circuit > see 7.4 chapter
46
Symbol
Description
Fault/Cause
Remedy
099-005637-EW501
27.04.2021
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