Adjustment Of Pressure Arms; Adjustment Of Spool Brake - Kemppi FastMig MXF65 Operating Manual

Wire feed rolls
ø mm
Fe, Ss, Al, 0.6
V-groove
0.8/0.9
1.0
1.2
1.4
1.6
2.0
2.4
Fe, Fc, Mc, 1.0
knurled
1.2
1.4/1.6
2.0
2.4
Fe, Fc, Mc, 1.0
Ss, Al,
1.2
U-groove
1.6
2.9

adjustMent OF pressure arMs

Adjust the drive pressure to the filler wire with the thumb screws mounted over the pressure
arms. Notice the graduated scales indicating load. The load applied should be sufficient to
overcome a light braking force applied by hand to the filler wire, as it exits the welding gun
contact tip.
For smaller diameter and soft filler wires, less feed pressure is required. It should be possible to
apply a light breaking force to the filler wire by hand, as it exits the gun contact tip. But slightly
more wire flow restriction should render the drives rolls to slip slightly over the filler wire
without deforming the wire
Excessive pressure causes flattening of the filler wire and damage to coated or cored filler
NOTE!
wires. It also causes undue wear of the feed rolls and increases gearbox load, so reducing service
life.
2.10

adjustMent OF spOOl Brake

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.
The load applied varies depending on the size and weight of the filler wire and spool, but also
the filler 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 filler wire does
not spill from the spool on overrun.
Too much or unnecessary loads can impact welding quality, load and wear to the wire feed
NOTE!
system.
colour drawing pressing
pale grey W001045 W001046
white W001047 W001048
red W000675 W000676
orange W000960 W000961
brown W001049 W001050
yellow W001051 W001052
grey W001053 W001054
black W001055 W001056
red W001057 W001058
orange W001059 W001060
yellow W001061 W001062
grey W001063 W001064
black W001065 W001066
red W001067 W001068
orange W001069 W001070
yellow W001071 W001072
A
EN
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