Lincoln Electric LF 52Ds Operator's Manual page 31

Loading the Electrode Wire

Turn the input power OFF.

Open the spool wire case.

Unscrew the locking nut of the sleeve [8].

Load the spool wire on the sleeve such that the spool
turns clockwise when the wire is feed into the wire
feeder.

Make sure that the spindle brake pin goes into the
fitting hole on the spool.

Screw in the locking nut of the sleeve.

Open the wire drive door.

Put on the wire roll with the correct groove
corresponding to the wire diameter.

Free the end of the wire and cut off the bent end
making sure it has no burr.
WARNING
Sharp end of the wire can hurt.

Rotate the wire spool clockwise and thread the end of
the wire into the wire feeder as far as the Euro Socket.

Adjust force pressure roll of the wire feeder properly.
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 screw M10, which
is placed inside of the sleeve frame after unscrewing the
brake locking nut.
Figure 15
27. Locking Nut.
28. Adjusting Screw M10.
29. Pressing Spring.
Turning the M10 screw clockwise increases the spring
tension and increase the brake torque
Turning the M10 screw anticlockwise decreases the
spring tension and decrease the brake torque.
After finishing of adjustment, you should screw brake
locking nut again.
English
27
28
29
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 force,
counterclockwise to decrease force. Proper adjustment of
pressure arm gives the best welding performance.
If the roll pressure is too weak the roll will slide on the
wire. If the roll pressure is set too heavy the wire may be
deformed, which cause feeding problems in the welding.
The pressure force should be set properly. For this
purpose 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.
Inserting Electrode Wire into Welding
Torch

Turn the welding machine off.

Depending of welding process connect proper welding
torch to the euro socket. Rated parameters of the
torch and welding machine should be matched.

Depends on type of gun must be remove the nozzle
from the gun and contact tip or protection cap and
contact tip.

Turn the welding machine on.

Hold the Cold Feed/Gas Purge Switch [14] or use
torch trigger until wire appear over threaded end of the
gun.

When the Cold Feed switch or torch trigger 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
threaded end.
29
WARNING
WARNING
English