IGBT MIG-200M, User Manual

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5.3.2 Changing the feed roll groove
The feed roll groove is factory set for welding filler wires of 0.8-1.0 mm diameter. The feed roll
groove must be changed if you use 0.6 mm thick filler wire.
1. Open the feed roll from the pressure control lever.
2. Switch the machine on from the main switch.
3. Press the welding gun trigger and drive the feed roll in such a position that its locking screw is
up and can be opened.
4. Switch the power off from the main switch.
5. Open the feed roll locking screw with a 2.0 mm Allen wrench approximately half a turn.
6. Pull the feed roll from its shaft.
7. Turn the feed roll and reinstall it to its shaft all the way to the bottom making sure that the screw
is on the shaft's level.
8. Tighten the feed roll locking screw.
5.4 Shielding gas
The shielding gas used for steel wires is carbon dioxide or a mixture of argon and carbon dioxide
which replaces air in the arc's area. Thickness of the welded sheet and welding power define the
flow rate of the shielding gas.
Connect the bayonet socket of the shielding gas hose to the machine's hose connector and the
hose connector end to the gas bottle's control valve.
NOTE! Use a shielding gas suitable for the material’s welding. Fix the gas bottle securely in
an upright position before installing the control valve.