Kemppi Pulse 3000 MVU - Manual (Page 10)

EN
2.8 installatiOn OF WelDing gun
Make sure the gun wire conduit and the contact tip match the manufacturer’s
recommendations for the type and diameter of wire you use. Too small a conduit may
overload the wire feed device and impede the wire feeding. Tighten the gun’s quick connector
to eliminate voltage loss. A loose joint will heat up the gun and wire heater.
NOTE! Never use defected gun.
2.9 mOunting anD lOCKing OF Wire reel
LOCKED OPEN
• Release locking nails of wire reel hub by turning locking knob a quarter round.
• Mount the reel at its place. Note rotating direction of reel!
• Lock the reel with locking knob, locking nails of hub remain to outside position and will
lock the reel.
2.10 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.
• 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.
NOTE! Check that the wire or wire reel does not touch the equipment body, there is a danger of
short circuit
2.11 aDjustment OF Pressure
Adjust the pressure of the feed rolls with the control screw so that the wire is fed into the wire
guide tube evenly and allows a little braking when emerging from the contact tip, without
slipping on the feed rolls.
NOTE! Excessive pressure will cause the filler wire to flatten and damage its coating, as well as
undue wear and tear of the feed rolls and friction damage.
8
Kempac
t P
ulse 3000 MVU / © Kemppi O
y / 1026