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19
ο OVERLOAD PROTECTION
Overload protection for power supply to welding
Your MIG175 is equipped with a temperature controller as well as an overload breaker.
These two protection devices will protect the welding machine whenever the output exceeds
the maximum out-put. If the output is exceeded, the unit will not supply voltage and the
wire feeder will shut down (the fan will continue to run to cool the unit).
If the shutdown resulted from output overload, the circuit breaker button will extend
out if it has been tripped. The circuit breaker must be reset manually. Before resetting the
circuit breaker button, wait several minutes to allow the welding machine to cool down.
If there is no voltage and circuit breaker was not tripped, the internal thermal protector
may have shut off the machine until it cools to a reasonable operating temperature. This is
an automatic function and does not require the user to manually reset anything. The fan will
continue to run while the unit is cooling.
If the unit is still βONβ but neither the output nor fan is working, either an overload fuse or
a power supply circuit fuse has been blown.
ο OVERLOAD PROTECTION TO WIRE FEEDER
The MIG175 model has two automatic circuits to protect motor of the wire feeder, if there is
fault occurred to the motor, the circuit will power off wire feeder as well as the output.
When the trigger is released again, the circuit will be automatically reset.
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