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6
MAINTENANCE
6.1
General
NB!
Before doing any kind of maintenance work, make sure the mains is discon-
nected.
For the maintenance of the A2--A6 Process Controller (PEH), see the instruction
manual.
6.2
Daily
S
Clean flux and dirt off moving parts of the welding machine.
S
Check that the contact tip and all electric cables are connected.
S
Check that all bolted joints are tight and that guides and drive rollers are not
worn or damaged.
S
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.
Adjusting the braking torque:
S
Set the locking button (2) to the
locked position.
S
Insert a screwdriver into the hub
springs.
S
Turning the springs (1) clockwise
reduces the braking torque.
S
Turning the springs anticlockwise increases the torque.
NOTE!
Turn the springs by the same amount.
6.3
Regularly
S
Check the carbon brushes of the wire feed motor every three months. Replace
when they are worn down to 6 mm.
S
Check the slides and lubricate if they bind.
S
Check the wire guides, drive rollers and contact tip of the wire feed unit.
Replace any worn or damaged components, (see spare parts list on page 207).
GB
