Unimig KUMJRRW250, Operating Manual

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Continued set up for MIG with Gas for RAZORWED-MIG250MTS
(9) Align the wire into the groove of the drive roller and close down the top roller making sure the wire is in
the groove of the bottom drive roller, lock the pressure arm into place.
(10) Apply a medium amount of pressure to the drive roller.
(11) Remove the gas nozzle and contact tip from the torch neck,
(12) Press and hold the inch button to feed the wire through to the torch neck, release the inch button when
the wire exits the torch neck.
(13) Fit the correct sized contact tip and feed the wire through it, screw the contact tip into the tip holder of
the torch head and nip it up tightly.
(14) Fit the gas nozzle to the torch head.
(15) Carefully open the gas cylinder valve and set the flow rate to between 5-10 l/min.
(16) Set the welding parameters using the wire feed, inductance and voltage control knobs.
(17) Using the Burn Back control set the amount of wire to ‘burn back’ after you release the torch
trigger. This prevents the wire becoming stuck in the weld pool when finishing the weld.
(12) Press and hold the inch wire button to
feed the wire down the torch cable through
to the torch head.
(11) Remove the gas nozzle and contact tip
from the front end of the mig torch.
(13) Fit the correct size contact tip over
the wire and fasten tightly into the tip
holder.
(14) Fit the gas nozzle to the torch head.
(16) Set welding parameters using
the voltage, inductance and wire feed
controls.
(17) Adjust the burn back control to prevent
the wire sticking in the weld pool.
(9) Close down the top roller bracket and clip
the pressure arm into place.
(10) Apply a medium amount of
pressure to the drive roller
(15) Carefully open the valve of the gas
cylinder, set the flow to 10 l/min
Note: Pictures may vary from your model machine