Lincoln Electric POWERTEC 205C Series Operator's Manual page 12

Changing Driving Rolls
WARNING
Turn the input power off of the welding power source
before installation or changing drive rolls.
POWERTEC 205C is equipped with drive roll V0.8/V1.0
for steel wire.
POWERTEC 255C & 305C is equipped with drive roll
V1.0/V1.2 for steel wire.
For others wire sizes, is available the proper drive rolls
kit (see "Accessories" chapter) and follow instructions:

Turn the welding machine off.

Release the pressure roll lever /levers [43].

Unscrew the fastening cap / caps [44].

Open the protection cover [45].

Change the drive roll / rolls [46] with the compatible
ones corresponding to the used wire.
WARNING
Be sure that the gun liner and contact tip are also sized
to match the selected wire size.
WARNING
For wires with the diameter larger than 1.6mm, the
following parts are to be changed:

The guide tube of the feeding console [47] and [48].

The guide tube of the Euro Socket [49].

Replace and tighten the protection cover [45] to the
drive rolls.

Screw fastening cap / caps [44].

Manually feed the wire from the wire reel, the wire
through the guide tube, over the roller and guide tube
of Euro Socket into liner of gun.

Lock the pressure roll lever / levers [43].
K14054- 1 POWERTEC 205C 400V
K14054- 2 POWERTEC 205C 230/400V
K14055- 1 POWERTEC 255C 400V
K14055- 2 POWERTEC 255C 230/400V
K14056- 1 POWERTEC 305C 400V
K14056- 2 POWERTEC 305C 230/400V
Figure 17.
English
43
46
45
44
K14056- 3 POWERTEC 305C 400V
K14056- 4 POWERTEC 305C 230/400V
42
49
Gas Connection

Connect the gas hose to the Gas Connector [9]
located on the rear panel of the machine.

Put the gas cylinder on the machine shelf and secure
it with the chain.

A gas cylinder must be installed with a proper flow
regulator.

Once a gas cylinder with a flow regulator has been
securely installed, connect the gas hose to the
regulator using the hose clamp.
The welding machine supports all suitable shielding
gases at a maximum pressure of 5,0 Bar.
Always fasten gas cylinder properly in vertical position in
a special holder on the wall or on a carriage. Remember
to close gas cylinder valve after having finished welding.
Gas cylinder can be fasten on the machine's shelf, but
the height of gas cylinder doesn't have to be higher than
43in/1,1m. See the Figure 19. The gas cylinder which is
fastened on the machine's shelf has to be secured by
attaching it to the machine using the chain.
9
43 48
47
46
44
45
Figure 18.
WARNING
WARNING
WARNING
Figure 19.
English