INSTALLATION
Before connecting the machine, ensure that the power supply is cut off. The welding machine is equipped with an input voltage
compensation device. This device allows the machine to work without interruption when the input voltage fluctuates ±10% with
respect to the nominal voltage. When using a long cable in order to reduce the voltage drop, a cable with big cross section area
is suggested. If the cable is too long, this will affect the arc starting performance and other system functions, we suggest to use
the recommended length.
The MIG155GD can be used for both MIG (which is solid wire with shielding gas) and flux-cored arc welding. Please see below
the MIG welding installation diagram. In flux-cored arc welding mode the gas cylinder does not need to be connected, however
the polarity must be reversed.
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Changing Polarity
The short dongle wire on the front of the machine will determine the polarity of your MIG welding or flux core welding. When
flux core welding plug the short dongle wire into the minus (-) connector on the left side as you face the machine. When you
are MIG welding with gas, plug that dongle lead into the (+) connector, and of course the ground clamp goes into the remaining
connector.
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Installation diagram in Mig mode
Gas
cylinder
CO
torch
Work piece
G
round clamp
Power supply
Mig
meter
2
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INST
ALLA
TION