Jasic MIG 350 Pulse Separate, Operator'S Manual

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water-cooling should be used as long as water-
cooling torch is used.
Unobstructed gas hose and water hose:
If the hose is pressed by heavy things or the hose is
bended, water or gas would stop flowing. Thus, the
welding torch would be burned or welding defects
would be produced.
Take good care of the welding torch:
Careless operation of the welding torch would lead
to wire breaking, water or gas leakage and nozzle
damage easily.
Poor connection of the gas regulator or gas hose
would lead to gas leakage or gas flow reducing at
the nozzle front, consequently, gas protection effect
would be weakened, and air holes in the weld bead
would be caused.
Reliable connection:
The connection between the welding machine and
the power supply, between the welding machine
and the welding torch, between the welding
machine and the electrode holder, between the
welding machine and the wire feeder and between
the welding machine and the earth cable should be
good, and the connection of all kinds of control
cables should be good also. Improper connection
would cause poor contact, which would lead to
malfunction, resulting in abnormity and burnout,
etc.
Connection with the work piece:
If someone uses steel plate or steel bar instead of
the cable connecting the work piece, the resistance
would be greater, and the welding current would be
unstable. In addition overheating would lead to a
fire hazard. Therefore, please connect the base
metal correctly with normal insulated cable.
Take protective measures when welding in windy
environment. Otherwise, the shield gas would be
blown away and air holes would be caused.
Clean the base metal before welding if there is any
oil, rust, paint, moisture or other matters on the
surface of it. Otherwise, air holes or cracks would be
caused, and good welding effect could not be
obtained.