iBell IBL M200-89, Operator'S Manual

Page: 21 / 26

21
In Manual metal arc(MMA) welding, the welding filler material is
melted from the electrode to the weld pool. Rate of welding current
is selected on the basis of electrode size used and welding position.
Arc forms between electrode tip and welding piece. The melting
electrode coating forms gas and slag, which protects the weld pool.

Always fix earth cable clamp directly on the welding piece. Clean
connection surface of earth clamp from paint and rust. Connect
the clamp carefully so that contact surface is as large as possible.

Turn the power switch to “ON” position. Cooling fan inside the
machine should begin to work once welding starts. All the iBELL
welding machines are equipped with automatic cooling
technology; Smart fan will work only when welding starts and
helps to cool the internal circuit and components.

Clamp the welding rod on the electrode holder, the machine is in
the manual welding mode and in the standby state.

In accordance with the thickness of welding work-piece, diameter
of welding rod, working position and technology needs, make
sure suitable welding current. If current is too high, intensified
splashing may lead to inferior formation of weld and if low, the
melted welding stick becomes fluid and drop transfer would not
proceed smoothly.
GENERAL OPERATION
WARNING!
Make sure that welding cable and earth cable
connections are tight. If a connection is slack, it will result in voltage
drop that will cause the connection to heat. During welding, it is
forbidden to pull off any plug or cable in use, or it will lead to life-
threatening danger and severe damage to the machine.
MMA WELDING MACHINES