Hi,
I've an unidentified old 250A transformer MIG. It's worked well for a while but has started to play up. There are two power setting switches - one for low / high range, and one with finer steps from 1-6. The low-high connects the live to one of two tappings on the primary winding of the transformer; the 1-6 connects one of six tappings to neutral on the other side of the transformer, thus giving twelve power settings.
Of late, the welder has ceased to work consistently in high range. It still works in low range. If I get it running in low range, switching to high range sometimes works.
I suspect it is also losing power in low range but am not certain. If it never worked in high range, I'd be looking for a broken connection somewhere, but the intermittency of the problem is confusing me. Any ideas would be gratefully received.
I've an unidentified old 250A transformer MIG. It's worked well for a while but has started to play up. There are two power setting switches - one for low / high range, and one with finer steps from 1-6. The low-high connects the live to one of two tappings on the primary winding of the transformer; the 1-6 connects one of six tappings to neutral on the other side of the transformer, thus giving twelve power settings.
Of late, the welder has ceased to work consistently in high range. It still works in low range. If I get it running in low range, switching to high range sometimes works.
I suspect it is also losing power in low range but am not certain. If it never worked in high range, I'd be looking for a broken connection somewhere, but the intermittency of the problem is confusing me. Any ideas would be gratefully received.