A five-year journey with love and dedication. MIG welder troubleshooting guide provides welding troubles and its explanation.

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Like another welding process, MIG welding has some complications. However, knowing these complications will help you to protect the machine from problems and their solution. Here I’m going to tell you about some common MIG welder troubleshooting, you can boast the quick fix to your welding defects.

Some basic problems of MIG welder are describes as below:

Reason:

The machine can create a problem for starting because of many reasons. Some fundamental rights are wrong input voltage, blown up of fuse or having a problem in the circuit. Moreover, having the problem of starting the machine can cause the overheating.

Key:

If you notice that the machine is not starting correctly then you have first check that the machine is appropriately switched. If it is appropriately changed then check the other possible reason and solve them. You must verify that the input voltage is set correctly and follow the manual for avoiding this problem. Alternatively, if the machine gets overheated then shut down it and keep it for cooling down. Alternatively, if the fuse is blown up, then you must replace it as early as possible.

Reason:

If you turn on the machine and it starts correctly, and suddenly the fuse creates trouble then there has a defective fuse. It may result in the short circuit. Moreover, the other reason may be the wick is too small for the machine.

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Key:

Noticing this problem, you have to solve the short circuit. Alternatively, if the fuse is too small for the machine then change the fuse with a bigger fuse to avoid this problem.

Reason:

If the polarity switch is worn out or the welder is under load then the polarity switch stops working.

Key:

Noticing this problem, you must change the polarity switch and make sure that you are not using the welder at under load condition.

Reason:

If there has a loose connection or have set an irregular duty cycle then the electrode holder will heat up.

Key:

To solve this problem you must tight the connection. Alternatively, if causes by irregular duty cycle then you have to change that with the proper size.

Reason:

If you are not grounded the frame of the welder machine properly then it may cause the electrical shocks.

Key:

In this case, you have to follow the manual and instruction of grounding the frame properly to avoid electrical shocks. If you ground the chassis correctly, then you will not face any electrical shocks.

Reason:

If the cable is in a defective condition or the duty cycle is improper then the wire will heat up very faster.

Key:

For avoiding this problem you must change the cable with proper condition and size. Moreover, you will know the appropriate scope of wire in the user manual.

Reason:

When the machine gets implicated by oxides that can change the flow of current and can create high stumbling block of the machine then the ground clamp will be in lousy condition.

Key:

Make sure that you are cleaning the ground clamp regularly for avoiding the building up of oxides that cause the creation of stumbling block of the machine.

Reason:

If you are using the cable for a long time then it can damage.

Key:

If you notice that the cable is in damaged condition then you must change it instantly otherwise it will affect your working quality and also create a problem.

If you notice any poor welding result then you may replace or repair the parts of the welder. Because poor welding result only causes defective portions of the machine. Below is given some common welding defects and its solution.

Reason:

A widespread welding defect may cause by inappropriate MIG welder wire feed problems that are occurred by worn driver rolls.

Key:

Clean the driver roll periodically and remove all the dirt of the liner for avoiding this problem. Moreover, replace the driver roll if it’s necessary.

Reason:

When the welding gun’s tip worn out then it can cause the flat welding. If it happens suddenly, you won’t get proper welding result.

Key:

You must replace the tip just after noticing this problem.

Reason:

Another common welding defect is porosity. Insufficient gas flow occurs it.

Key:

For avoiding this problem you must check that gas nozzle is plugged in correctly. Moreover, also check that the wire connection is plugged in correctly.

Reason:

If the wire is pale or having small follicle can cause shrinkage crash on the weld.

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Key:

If the follicle is of sufficient size then you won’t face this problem. Moreover, always remember that there is no rust in the welding area.

Reason:

Lateral cracks on the weld can occur by the fast welding speed or low current or high arc voltage.

Key:

For avoiding Lateral cracks on the weld, maintain a constant welding speed. Moreover, make sure that the arc voltage is also constant.

Mac Mw 250 Mig Welder Manual