7 MAINTENANCE
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7.2 Power source
To maintain the performance and increase the lifetime of the power source it is mandatory to clean it
regularly. How often depends on:
• the welding process
• the arc time
• the working environment
7.3 Inspection, cleaning and replacement
CAUTION!
Make sure that the cleaning procedure is done in a suitable prepared workspace.
CAUTION!
The cleaning procedure should be carried out by authorised service technician.
Wire feed mechanism
Check regularly that the wire feed unit is not clogged with dirt.
• Cleaning and replacement of the wire feed unit mechanism's worn parts should take place at
regular intervals in order to achieve trouble-free wire feed. Note that if pre-tensioning is set too hard,
this can result in abnormal wear on the pressure roller, feed roller and wire guide.
• Clean the liners and other mechanical parts of the wire feed mechanism, using compressed air, at
regular intervals or if the wire feed seems slow.
• Changing nozzles.
• Checking driving-wheel.
• Changing the cog-wheel package.
Bobbin holder
Inspect at regular intervals that the brake hub sleeve and the brake hub nut are not worn out and that
they lock properly, replace if necessary.
Welding torch
The wear parts of the welding torch should be cleaned and replaced at regular intervals in order to
achieve trouble-free wire feed. Blow the wire guide clean regularly and clean the contact tip.
After cleaning and perform testing according to IEC 60974-4. Follow the procedure in section “After
repair, inspection and test” in the Service manual.
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