Replacing The Wire Liner; How To Choose The Wire Liner For Direct And Euro Connect Torches; Arrangement For Welding With A Spool Gun - Forney 270 MIG Manual De Instrucciones

driven by the inside groove. Feed rolls are marked on the side identifying the groove nearest
that side.
• Close the side panel of the machine. Connect the power supply cable to the outlet. Turn on the
switch. Press the torch switch. The wire fed by the wire feeding motor at variable speed must
slide through the liner. When it exits from the torch neck, release the torch switch. Turn off
the machine. Mount the contact tip and the nozzle. NOTE: When checking the correct exit of
the wire from the torch do not bring your face near the torch. You may run the risk of being
wounded by the outgoing wire. Do not bring your fingers close to the feeding mechanism
when working! The rolls, when moving, may crush fingers. Periodically check the rolls.
Replace them when they are worn and compromise the regular feeding of the wire.

Replacing the Wire Liner

BEFORE PERFORMING THIS PROCEDURE, BE SURE THE GAS SUPPLY LINE AND
INPUT POWER CABLE ARE DISCONNECTED.
• Disconnect the torch from the machine.
• Place it on a flat surface and carefully remove
the brass nut (1).
• Pull the liner out of the hose.
• Install the new liner and mount the brass nut (1)
again.
In case you are replacing a Teflon or graphite wire liner,
follow these instructions:
• Install the new liner and insert the wire liner
collet (3) and the O ring (4).
• Mount the brass nut (1).
• Cut the wire liner close to the brass nut.
NOTE: the length of the new wire liner must be the same as the liner you have just pulled out
of the hose.
• Connect the torch to the machine and install the wire into the feeding system.

How to Choose the Wire Liner for Direct and Euro Connect Torches

There are basically two types of wire liners: Steel and Teflon. Steel wire liners can be coated or non-
coated. Coated wire liners are used for air-cooled torches. Teflon wire liners are recommended for
aluminum welding as they allow smooth feeding of the wire.

Arrangement For Welding With a Spool Gun

WARNING: Electric shock can kill! Always turn the POWER switch OFF and unplug the power
cord from the AC power source before installing wire.
Before installing any welding wire into the unit,
the appropriate drive roll must be placed into position
on the wire drive mechanism. Ensure the groove is the
proper shape and size for the wire being used. Adjust
the drive roll according to the following steps:
1. Open the wire drive cover on the spool gun.
2. Remove the drive tension by loosening the
tension adjusting screw and lifting the drive
tension adjustor up, away from the drive
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