Fronius PullMig AL216 Instructions De Service page 29

Troubleshooting
Troubleshooting
No number („PPU") selectable for PullMig (PushPull Unit)
Cause:
Remedy:
Number for PullMig (e.g. „PPU | 5"), for PushPull equalisation is not selectable
Cause:
Remedy:
PullMig feed rolls are not turning
Cause:
Remedy:
Cause:
Remedy:
Irregular wire speed
Wire electrode forms a loop between feed rolls and wire inlet nozzle
Cause:
Remedy:
Cause:
Remedy:
Welding wire is deformed or breaks off
Cause:
Remedy:
Cause:
Remedy:
PullMig becomes too hot
Cause:
Remedy:
EFd | xx.x, EFd | 8.1
Cause:
Remedy:
EFd | 8.2
Cause:
Remedy:
EFd | 9.1
Cause:
Remedy:
„PMR4000 PullMig" installation set is not installed
Install installation set
Power source does not have „FS Drive" software
Provide power source with „FS Drive" software
PullMig control plug is not plugged in
Connect PullMig control plug at torch control connection
PullMig connection cable damaged
Check cable and replace if necessary
Feed rolls not suitable for wire electrode being used
Use appropriate feed rolls
Wrong electrode pressure of PullMig or 4-roll drive
Optimise electrode pressure
Electrode pressure of PullMig or 4-roll drive set too high
Set electrode pressure of PullMig or 4-roll drive correctly
PullMig turns too fast or too slow
Select right number (e.g. „PPU | 5") for PullMig during PushPull
equalisation
Inadequate cooling; water circulation too low or non-existent in coo-
ling unit
Check whether PullMig is properly connected; check cooling unit and
bleed if necessary; check coolant throughflow for PullMig
Wire drive blocked/faulty
Inspect/replace motor for wire drive
Fault in wire feed system (overcurrent in PullMig drive)
Lay hose pack out in as straight a line as possible; check liner for kink
or dirt; check contact pressure of PullMig feed rolls
External supply voltage: supply voltage has dropped below tolerance
range
Check external supply voltage
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