Würth MM 350 Original Bedienungsanleitung Seite 17

Guide values for filler materials
MIG-MAG guide value for shielding gas volume:
MAG welding: Wire diameter [mm] x 11,5 = Shielding gas volume [l/min]
MIG welding: Wire diameter [mm] x 13,5 = Shielding gas volume [l/min]
Guide values for fusion volume of welding wire:
Wire feed speed adjustable from 0.5 – 30 \[m/min]
Wire feed speed [m/min] *Specific wire weight [g/m]
Welding wire weight [g/min]
All other technical documents required by the Ecodesign Directive can be accessed on the Internet at
"http://www.wuerth.com/partsmanager" or requested from the nearest Würth branch.
Before taking into service (fig. I)
Welding torch connection
1. Connect the central plug [14] of the welding torch
[1] to the central socket [13].
Connecting the workpiece line
1. Connect the workpiece line [15] to the ground con-
nection [16].
2. Secure the workpiece line [15] by turning it to the
right.
3. Fasten the ground clamp [12] to the welding
bench or workpiece so that good conductivity is
ensured.
Fastening the ground clamp
Fasten the ground clamp [12] in the immediate
■
vicinity to the welding spot.
Make sure the connection between ground
clamp and workpiece is tight and allows for good
conductivity.
Never put the ground clamp on the
welding machine or the gas cylinder as
otherwise the welding current would be
led through the protective conductor
connections and destroy them.
Connecting to the mains supply
Plug the plug into a suitable socket.
The fuse must conform with the technical
data.
Inserting the welding wire coil (fig. II)
1. Remove the side cover [11] and slacken the nut
[29] of the spool [27].
2. Put the welding wire coil on the spool [27].
Make sure the wire pick-up [26] engages.
Use an adapter for small welding wire coils.
3. Set the wire brake [28] so that the welding wire
coil stops when the welding torch button is released.
Threading the wire electrode (fig. II)
1. Screw off and remove the power nozzle from the
welding torch [1].
2. Open the side cover [11].
3. Shift the levers [21] to the front
4. Thread the wire electrode through the feed nozzle
[25] and the central socket [13]
5. Fold open the swivel arms [23] and fasten it using
3 4
the levers [21]
6. Switch on the appliance with the main switch [40].
7. Stretch out the torch hose.
8. Push the wirefeed button [24].
9. Use the adjustment screws [20] to find a contact
pressure setting which just allows the wirefeed rolls
[22] to rotate while the welding wire coil is held.
10. The wirefeed roll [22] pressure on the central sock-
et [13] end should be greater than that on the feed
nozzle [25] end so as to keep the wire electrode
within the feeding unit under tension.
The wire must not be pinched or
deformed.
11. Press the wirefeed button [24] until the wire pro-
trudes 20 mm out of the torch neck.
1
.
2
.
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