11
1)
Note:
Since the arc of MIG welding is much strong than that of MMA welding, please wear welding helmet and protective
clothing
.
Connection of Shield Gas
Connect the CO
2
hose, which come from the wire feeder to the copper
nozzle of gas bottle. The gas supply system includes the gas bottle, the
air regulator and the gas hose, the heater cable should be inserted into
the socket of machine’s back, and use the hose clamp to tighten it to
prevent leaking or air-in, so that the welding spot is protected.
Please note:
1) Leakage of shielding gas affects the performance of arc welding.
2) Avoid the sun shine on the gas cylinder to eliminate the possible
explosion of gas cylinder due to the increasing pressure of gas
resulted from the heat.
3) It is extremely forbidden to knock at gas cylinder and lay the
cylinder horizontally.
4) Ensure no person is up against the regulator, before the gas
release or shut the gas output.
5) For MIG-250GW and MIG-250GF, insert the power supply plug of
the heater into the 36 VAC (5A) socket on the back panel of the
welding machine.
6) The gas output volume meter should be installed vertically to
ensure the precisely measuring.
7) Before the installation of gas regulator, release and shut the gas
for several time in order to remove the possible dust on the sieve
to avail the gas output.
