Welding and Metalworking - Problem with Century MIG welder
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mrfixit2
04-26-08, 10:11 PM
Hi I'm new to this forum, my problem is with my trusty 110v 95 amp Century MIG (Branded Canadian Titre 'Motormaster'
it's worked fine for 12 years, but is latly cutting out after a few seconds welding. I assumed that it must be a faulty heat switch (the switch that cuts the machine out during it's duty cycle) so to proove this I bypassed the switch. The welder worked fine. However I do not want to keep using the welder 'Bypassed' like this, but the faulty switch seems jambed under the windings and seems impossible to remove.
Any Ideas please.:wall:
it's worked fine for 12 years, but is latly cutting out after a few seconds welding. I assumed that it must be a faulty heat switch (the switch that cuts the machine out during it's duty cycle) so to proove this I bypassed the switch. The welder worked fine. However I do not want to keep using the welder 'Bypassed' like this, but the faulty switch seems jambed under the windings and seems impossible to remove.
Any Ideas please.:wall:
GregH
04-27-08, 05:51 AM
The over-temperature switch has failed either because it has been regularly cycling on over-temp and has worn out or there is a problem with the windings that is causing it to trip.
There is no safe way to repair this as the sensor must be embedded in the windings and can not be strapped to the surface.
It is also unsafe to use it bypassed as I'm sure you know.
IMO it looks like it would be time to replace the welder.
It would be a good time to upgrade to a major brand unit with a higher duty cycle.
There is no safe way to repair this as the sensor must be embedded in the windings and can not be strapped to the surface.
It is also unsafe to use it bypassed as I'm sure you know.
IMO it looks like it would be time to replace the welder.
It would be a good time to upgrade to a major brand unit with a higher duty cycle.
mrfixit2
04-27-08, 09:14 AM
Thanks Greg, I guess that's what I expected. That being the case is there any real danger in continuing to use the welder until I Fry it> I'm not using the welder enough right now to justify it's replacement.
GregH
04-27-08, 05:38 PM
It is a risk you would have to assess for yourself.
If the winding sensor is defective then nothing may happen but if it is overheating then the worse case is that it could catch fire.
Personally I like tools and would use it as a perfectly legitimate excuse to upgrade. :D
If the winding sensor is defective then nothing may happen but if it is overheating then the worse case is that it could catch fire.
Personally I like tools and would use it as a perfectly legitimate excuse to upgrade. :D
mrfixit2
04-27-08, 09:57 PM
The problem came on suddenly, and trips after only a few seconds welding. After I by-passed the switch, I tested the welder by welding, holding the arc for about one minute, the cover was off the machine at the time, so the fan was not really able to do it's job. even so I could not smell or feel excessive heat.
As I said, I have no real need for a fully functional welder at this time, so I think I will only use it with Caution, but keep my eyes open for a deal.
I'm not sure what I might have to pay for a MIG that has BETTER than a 20% duty cycle?
As I said, I have no real need for a fully functional welder at this time, so I think I will only use it with Caution, but keep my eyes open for a deal.
I'm not sure what I might have to pay for a MIG that has BETTER than a 20% duty cycle?