Migatronic MWF 8x Manuel D'instruction page 4

Introduction
Models MWFx are wire feed units designed for
connection to a MIG/MAG welding power source. All of
the wire feed units are fitted with 4-roll wire drive units
to the wire feed motor by a gearwheel. This ensures
stable feeding of the wire.
Important!
In order to avoid destruction of plugs
and cables, good electric contact is
required when connecting earth
cables and intermediary cables to
the machine.
How to connect the gas
Connect The gas hose, which comes from the
intermediary cable, to a gas supply with pressure
regulator (2-6 bar). (Note: Some types of pressure
regulators require an output pressure of more than
2 bar to function optimally).
Gas consumption
Depending on the welding task, gas type and seam
design, the gas consumption will vary in ranges from 6-
7 l/min at low amperages (<25A) and up to 27 l/min at
max. amperage.
Material consumption
Material consumption can be estimated by calculating
welding time in minutes times wire feed speed (m/min)
times weight per meter of the welding consumables in
use.
Adjustment of wire brake
The wire brake must ensure that the wire reel brakes
sufficiently quickly when welding stops. The required
brake force is depending on the weight of the wire reel
and the maximum wire feed speed. A brake torque of
1.5-2.0 Nm will be satisfactory for most applications.
Adjustment:
Dismount the control knob by
-
placing a thin screw driver
behind the knob and thereafter
pull it out
- Adjust the wire brake by
fastening or loosening the self-
locking nut on the axle of the
wire hub
- Remount the knob by pressing it back into the
groove.
Technical description
1. Wire feed speed control
2. Selector switch for 2-times/4-times/spot welding
functions
3. Volt/Ammeter (certain types only)
4. Soft start ON/OFF and soft start function control.
By adjustment to max. value the soft start is
automatically disconnected. The MWF returns to
set value.
5. Spot welding timer (the spot welding time is
measured from the time when the arc is started)
6. Burn-back control
7. Gas post-flow timer
8. Wire-inching control
9. Connection of torch
10. Plug for connection of remote control/push-pull-
control cable (extra equipment)
11. Torch watercooling connection (certain types only)
12. Shielding gas connection
13. Control cable connection
14. Welding cable connection
15. Fuse 10 A
Technical data
100% duty cycle
60% duty cycle
Wire speed
Mains voltage
Efficiency
Torch connection
Dimension wire reel
* Protection class
Weight
Dim. (lxwxh) standard
*
Equipment marked IP23 is designed for indoor and outdoor
applications.
4
MWF 8x MWF 11x
425 A 425 A
550 A 550 A
1,3-18 m/min 1,7-24 m/min
40V AC 40 V AC
250 VA 250 VA
EURO EURO
300 mm 300 mm
IP23 IP23
28 kg 28 kg
66x22x37 cm 66x22x37 cm
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