Oerlikon CITOSTEEL 255C Manual De Instrucciones página 39

Adjustments of Brake Torque of Sleeve
To avoid spontaneous unrolling of the welding wire the
sleeve is fitted with a brake.
Adjustment is carried by rotation of its Allen screw M8,
which is placed inside of the sleeve frame after
unscrewing the fastening cap of the sleeve.
Figure 69.
45. Fastening cap.
46. Adjusting Allen screw M8.
47. Pressing spring.
Turning the Allen screw M8 clockwise increases the
spring tension and you can increase the brake torque
Turning the Allen screw M8 anticlockwise decreases the
spring tension and you can decrease the brake torque.
After finishing of adjustment, you should screw in the
fastening cap again.
Adjusting of Pressure Roll Force
The pressure arm controls the amount of force the drive
rolls exert on the wire.
Pressure force is adjusted by turning the adjustment nut
clockwise to increase
decrease force. Proper adjustment of pressure arm
gives the best welding performance.
WARNING
If the roll pressure is too low the roll will slide on the wire.
If the roll pressure is set too high the wire may be
deformed, which will cause feeding problems in the
welding gun. The pressure force should be set properly.
Decrease the pressure force slowly until the wire just
begins to slide on the drive roll and then increase the
force slightly by turning of the adjustment nut by one
turn.
English
force, counterclockwise
Inserting Electrode Wire into Welding
Torch

Turn the welding machine off.

Depending on welding process, connect the proper
gun to the euro socket, the rated parameters of the
gun and of the welding machine should be matched.

Remote the nozzle from the gun and contact tip or
protection cap and contact tip. Next, straighten the
gun out flat.

Turn the welding machine on.

Hold the Cold Inch/Gas Purge Switch in the Cold
Inch position.

When the switch is released spool of wire should not
unwind.

Adjust wire spool brake accordingly.

Turn the welding machine off.

Install a proper contact tip.

Depending on the welding process and the type of
the gun, install the nozzle (GMAW process) or
protection cap (FCAW process).
Take precaution to keep eyes and hands away from the
end of the gun while the wire is being come out of the
threated end.
Changing Driving Rolls
Turn the input power off before installation or changing
drive rolls.
CITOSTEEL 255C/ 255C PRO, CITOSTEEL 325C/
325C PRO is equipped with drive roll V1.0/V1.2 for steel
wire. For others wire sizes, is available the proper drive
to
rolls kit (see
instructions:

Turn the input power OFF.

Unlock 4 rolls by turning 4 Quick-Change Carrier
Gear [52].

Release the pressure roll levers [53].

Change the drive rolls [51] with the compatible ones
corresponding to the used wire.
Be sure that the gun liner and contact tip are also sized
to match the selected wire size.
For wires with the diameter larger than 1.6mm, the
following parts are to be changed:

The guide tube of the feeding console [49] and [50].

The guide tube of the Euro Socket [48].

Lock 4 new rolls by turning 4 Quick-Change Carrier
Gear [52].

Manually feed the wire from the wire reel, the wire
through the guide tubes, over the roller and through
the guide tube of Euro Socket into liner of gun.

Lock the pressure roll levers [53].
35
WARNING
WARNING
"Accessories" chapter)
WARNING
WARNING
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English