Wire feed rolls
ø mm colour drawing pressing
Fe, Ss, Al,
V-groove
0.6 pale grey W001045 W001046
0.8/0.9 white W001047 W001048
1.0 red W000675 W000676
1.2 orange W000960 W000961
1.4 brown W001049 W001050
1.6 yellow W001051 W001052
2.0 grey W001053 W001054
2.4 black W001055 W001056
Fe, Fc, Mc,
knurled
1.0 red W001057 W001058
1.2 orange W001059 W001060
1.4/1.6 yellow W001061 W001062
2.0 grey W001063 W001064
2.4 black W001065 W001066
Fe, Fc, Mc,
Ss, Al,
U-groove
1.0 red W001067 W001068
1.2 orange W001069 W001070
1.6 yellow W001071 W001072
ADJUSTMENT OF PRESSURE ARMS2.9
Adjust the drive pressure to the ller wire with the thumb screws mounted over the pressure
arms. Notice the graduated scales indicating load. The load applied should be sucient to
overcome a light braking force applied by hand to the ller wire, as it exits the welding gun
contact tip.
For smaller diameter and soft ller wires, less feed pressure is required. It should be possible to
apply a light breaking force to the ller wire by hand, as it exits the gun contact tip. But slightly
more wire ow restriction should render the drives rolls to slip slightly over the ller wire
without deforming the wire
NOTE! Excessive pressure causes attening of the ller wire and damage to coated or cored ller
wires. It also causes undue wear of the feed rolls and increases gearbox load, so reducing service
life.
ADJUSTMENT OF SPOOL BRAKE2.10
Brake force is adjusted through the hole behind the locking clip. Remove the locking clip by
hand, and adjust the tension and pressure to the friction pads mounted inside with a screw
driver. See diagram and location A.
A
The load applied varies depending on the size and weight of the ller wire and spool, but also
the ller wire feed speed set. The heavier the wire spool and the faster the feed speed, the
greater the need to increase the braking load. Adjust the pressure, secure the locking clip, set
the wire feed speed and check that the braking force is enough to ensure the ller wire does
not spill from the spool on overrun.
NOTE! Too much or unnecessary loads can impact welding quality, load and wear to the wire feed
system.
11
FastMig MXF65, 67 / © Kemppi Oy / 0920
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