Kemppi MIG 2520 - Manual (Page 5)

Kempact mig 50 / 0635 – 5 © Kemppi oy
2.7. FEED ROLLS
Choose feed roll according to filler wire.
2.8. INSTALLATION OF WELDING GUN
Make sure the gun wire conduit and the flow nozzle 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 disturb the wire feeding. Tighten the gun quick connector to eliminate voltage losses. A loose
joint will make the gun and the wire feeder warm.
Do not use a damaged gun.
2.9. MOUNTING AND LOCkING OF WIRE REEL
1. Install the wire reel so that the hole in the reel is aligned with the pin on the reel holder. Use
a reel adaptor, if necessary.
2. Push the reel into its place. Note! Check the reel rotation direction.
3. Lock the reel by turning the locking latch.
2.10. INSTALLING WELDING WIRE
Before installing welding wire, check that the feed roll, wire conduit and contact tip are suitable
for the wire.
1. Install the feed roll, and check that the right groove is in the wire feed line.
2. Install the wire reel. Note! Do not tighten the locking screw of the reel trigger too much, the
reel must roll freely.
3. Round off the wire end and push it through the wire conduit into the wire drive tube.
4. Check that the wire is in the groove and turn press stick into its proper place. Tighten the
wire slightly.
5. Feed wire to the gun by pressing the switch until the wire has come through the contact tip.
Pressing force to the feed roll is suitable when the wire can be slightly restrained with the
fingers.
6. Adjust the wire reel braking force by turning the adjusting screw in the middle of the locking
latch. To avoid over-loading the wire feed motor, do not overtighten.
Note! Check that the wire or wire reel does not touch the equipment body, there is a
danger of short circuit
When using aluminium filler wire, removing rear guide tube may improve wire feed. When using
flux cored wire, always study the manufacturer’s operation and safety instructions before use.
Filler wires Wire Ø mm Groove
fe, ss, Cusi 0.6/0.8, 0.8/1.0 V-groove
flux cored 0.8/ 0.9, 1.0/1.2 knurled
al 1.0/1.2 U-groove