Kemppi MSF 53 - Manual (Page 12)

EN
2.4 MOUNTING AND LOCKING OF WIRE SPOOL
LOCKED OPEN
• Release locking nails of wire reel hub by turning locking knob a quarter round.
• Mount the spool at its place. Note rotating direction of spool!
• Lock the spool with locking knob, locking nails of hub remain to outside position and will
lock the spool.
A
B
• Release the locking nub (A)!
• Mount the spool at its place. Note rotating direction of spool.
• Lock the spool with locking nut.
NOTE! Check that in filler wire reel there are no parts sticking out, which could e.g. chafe against
chassis or door of wire feed unit. Dragging parts might expose chassis of wire feed unit under
voltage.
2.5 AUTOMATIC WIRE FEED TO GUN
Automatic wire feed makes change of wire reel more rapid. In reel change the pressure of feed
rolls need not to be released and filler wire goes automatically to correct wire line.
• Make sure that groove of feed roll matches the diameter of welding wire used.
• Release the wire end from reel and cut off the bent length. Be careful that the wire does
not spill from the reel to sides!
• Straighten about 20 cm of the wire and see that the end of it has no sharp edges (file off if
necessary). A sharp edge may damage the wire guide tube and contact tip of the welding
gun.
FastMig™ MSF wire feed units:
• Draw a bit of loose wire from wire reel. Feed wire through back liner to feed rolls. Do not
release pressure of feed rolls!
• Press the gun switch and feed a bit wire until wire goes through feed rolls to gun. See that
wire is in grooves of both feed roll pairs!
• Press still the gun switch until wire has come through contact tip.
Automatic feed may sometimes fail with thin wires (Fe, Fc, Ss: 0,6...0,8 mm, Al: 0,8...1,0 mm). In
that case you might have to open feed rolls and feed wire manually through feed rolls.
2.6 ADJUSTMENT OF PRESSURE
Adjust the pressure of feed rolls with the control screw (20) so that the wire is fed into the wire
guide tube evenly and allows a little braking when coming out from the contact tip without
slipping at the feed rolls.
NOTE! Excessive pressure causes flattening of the filler wire and damage to the coating. It also
causes undue wear of the feed rolls as well as friction.
10
FastM
ig MSF 53, 55, 57 / © Kemppi O
y / 1515