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Unsteady arc, severe spattering, pores in the welding material
Cause: poor earth connection
Remedy: to ensure good contact between the earthing clamp and workpiece, use a
new earthing cable if necessary
Cause: phase missing on mains side
Remedy: check mains fuses, mains sockets and plugs, notify After-Sales Service
Uneven wirefeed speed, welding wire forms a loop between feed rollers and torch
wire inlet nozzle
Cause: operating mode selector switch set to interval 2-step/4-step mode
Remedy: select suitable operating mode
Cause: wirespool brake applied too lightly/strongly
Remedy: adjust wirespool brake
Cause: the borehole of the contact tube is too narrow
Remedy: use correct contact tube
Cause: faulty wire feed liner in torch
Remedy: check wire feed liner for kinks, dirt etc. Check inner diameter
Cause: feed rollers are unsuitable for the wire being used
Remedy: match up feed rollers and welding wire
Cause: feed rollers have the wrong contact pressure
Remedy: adjust the contact pressure
Cause: quality of welding wire is not up to standard
Remedy: change welding wire
Cause: wirefeed into torch not adjusted to best effect
Remedy: correct wire feed
Cause: welding torch incorrectly configured
Remedy: reconfigure torch
Welding wire is welded to the contact tube or weld pool
Cause: afterglow time not set to best effect
Remedy: correct afterglow time
Main torch body and hosepack become very hot
Cause: design dimensions of the torch are not sufficient for this task
Remedy: observe duty cycle and loading limit
Cause: on water-cooled machines: flow rate too low
Remedy: check water level, flow rate and cleanliness
Troubleshooting
(continued)
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