Changing The Feed Roller Groove; Shielding Gas; Overheating Protection - ESAB Caddy Mig C200i Manuel D'instructions

US
NOTE.
Remember to use the correct contact tip in the welding gun for the wire diameter
used. The torch is fitted with a contact tip for
diameter you must change the contact tip. The wire liner fitted in the gun is
recommended for welding with Fe and Ss wires. Change the liner to the PTFE type
for welding Al or Brazing (CuSi). See
5.7.1

Changing the feed roller groove

The power source is delivered with the feed roller set for
If you want to use it for
1. Fold back the pressure arm to release the pressure roller.
2. Switch on the power source and press the gun trigger to position the feed roller
so that the locking screw is visible.
3. Switch off the power source.
4. Use a 2mm Allen key to open the locking screw about half a turn.
5. Pull the feed roller off the shaft and turn it around. See marking on the side of the
feed roller for suitable wire diameters.
6. Put the roller back on the shaft and make sure it goes all the way in. You may
need to turn the roller to position the locking screw over the flat surface of the
shaft.
7. Tighten the locking screw.
5.8

Shielding gas

The choice of suitable shielding gas depends on the material. Typically mild steel is
welded with mixed gas (Ar + CO2) or carbon dioxide. Stainless steel can be welded
with mixed gas (Ar + CO2 or Ar + O2) and Aluminium with pure argon. MIG/MAG
brazing (CuSi) uses pure argon or mixed gas (Ar + O2). Check the recommended
gas for the welding wire you want to use. In the QSett mode (see chapter 5.2.2)
the optimal welding arc with the gas you use will be automatically set.
5.9

Overheating protection

Overheating is indicated on the display (2) with error code E4. A thermal overload fuse
protects the unit against overheating by disabling the welding if overheating occurs. The
fuse resets automatically when the unit has cooled down.
bc22a
6.2 regarding how to change the wire liner.
.024" wire you must change the groove in the feed roller.

- 21 -
.030" wire. If you use another

 .030"/.040" welding wire.