Fronius MHP 550i G ML, Manual

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Assembling Mul-
tilock welding
torches
NOTE!
Risk from incorrect assembly of the welding torch.
This can result in damage to the welding torch.
▶
Before fitting a torch body, ensure that the interface between the torch body and the
hosepack is clean and undamaged.
▶
In the case of water-cooled welding torches, increased resistance may arise when
tightening the union nut due to the construction of the welding torch.
▶
Always tighten the union nut on the torch body as far as it will go.
1
The torch body is in the 0° position when
the dowel pin (1) on the hosepack enga-
ges in the locating hole (2) in the torch
body.
2 3
* Ensure that the union nut is tightened as far as it will go.
Note regarding
the inner liner
with gascooled
welding torches
NOTE!
Risk from incorrect inner liner insert.
This can result in poor weld properties.
▶
If a gascooled welding torch is used with a plastic inner liner and bronze inner liner
insert instead of a steel inner liner, the performance data specified in the technical
data is reduced by 30%.
▶
To operate gascooled welding torches at maximum power, replace the 40 mm (1.575
in.) inner liner insert with the 300 mm (11.81 in.) inner liner insert.
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