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hfa7m1ea
5 MAINTENANCE
5.1 General
Note:
All warranty undertakings given by the supplier cease to apply if the customer
attempts to rectify any faults on the machine during the warranty period.
NB! Before doing any kind of maintenance work, make sure the mains is
disconnected.
For the maintenance of the PEK, see the instruction manual 0460 948 xxx,
0460 949 xxx, 0459 839 036.
5.2 Daily
Keep the moving parts of the welding head clean.
Make sure contact nozzles, hoses and electric cables are properly connected.
Make sure all bolted joints are tightened and that the conduit and the feed rollers
are not worn or damaged.
Check the brake hub braking torque. It should not be so low, that the wire reel
continues to rotate when wire feed is stopped and it should not be so great that
the feed rollers slip. As a guide, the braking torque for a 30 kg wire reel should
be 1.5 Nm.
To adjust the braking torque see on page 13.
5.3 Regularly
Check the wire feed motor brushes once every three months. Replace when
they are worn down to 6 mm.
Examine the slides and lubricate if they bind.
Inspect the wire guides, drive rollers and contact tip on the wire feed unit.
Replace any worn or damaged components, (see spare parts list on page 25).
Inspect the gas nozzle and clear it regularly of welding spatter.
Blow the wire conduit clean at regular intervals.
For trouble-free wire feed the wear parts of the feed mechanism should be
cleaned and replaced at regular intervals.
NOTE that too hard pre-tensioning can lead to abnormal wear of the pressure
roller, feed roller and wire conduit.
GB
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