Jasic MIG250P - Feeder

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There is wire feeding and
voltage output after torch
trigger is pressed, but
there is no gas output
Gas circuit is blocked;
Top gas valve of wire feeding
motor assembly fails;
Control circuit of gas valve fails;
Check and repair the gas circuit;
Replace the gas valve;
Repair the control wire of gas valve;
Welding current is not
stable with shaking torch
Inappropriate moment
adjustment of wire feeder;
Wire feed rollers do not match
welding wire;
Torch contact tip is seriously
worn;
Wire pipe in the torch is
seriously worn;
Welding wire is of poor quality;
Appropriately adjust the moment of wire
feeder;
Select suitable wire feed rollers and welding
wire;
Replace the torch contact tip;
Replace the wire pipe;
Replace with welding wire of better quality;
Gas meter does not heat
Heater plug is not well
connected;
Electric heater in the gas meter
is damaged;
There is open circuit on the fuse
of heating source;
Reconnect the heater plug;
Replace the gas meter;
Replace the fuse of heating source;
Electrode holder is hot
The rated current of the
electrode holder is lower than
its actual working current;
Replace it with one of bigger rated current;
Other failure
Please contact with Jasic maintenance
personnel.