INSTALLATION AND ADJUSTMENT
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§3.2 Duty cycle and Over-heat
The letter “X” stands for the duty cycle, which is defined as the proportion of the time that a
machine can work continuously within a certain time (10 minutes). The rated duty cycle means
the proportion of the time that a machine can work continuously within 10 minutes when it
outputs the rated welding current.
The relation between the duty cycle “X” and the output welding current “I” is shown as the
right figure.
I
（
A
）
0
100
％
60
％
90
X
The relation between duty cycle and welding
current for MIG160
115
160
If transformer is over-heat, the heat relay inside it will open and will output an instruction to
circuit board, cut AC relay and the output welding current, and brighten the over-heat pilot lamp
in the front panel. At this time, the machine should be relaxed for 15 minutes to cool the fan.
When operating the machine again, the welding output current or the duty cycle should be
reduced.
§3.3 Equipment Connection
Operation Steps
：
1
、
Connect the power source input cable of welding machine with the output port of air switch in
electric box on the spot.
2
、
Connect the cable plug of wire feeder to the positive output of welding machine.
3
、
Connect the control cable plug of wire feeder to the aero socket on the front board of welding
machine.
