I have an EPTS (Adelaide) branded 6" 1/2hp bench grinder with the old-fashioned push-pull switch giving me good service until recently. With buffing wheel attached I had just completed buffing a considerable number of small brass fittings and switched it off without noticing anything out of the ordinary, apart from being hot to touch as it normally is.
However, it wouldn't run again a few minutes later. It gave no prior hint of trouble. I have since tested it twice with an appliance tester, once when still warm and again when cold and it fails all three EARTH CONTINUITY, INSULATION, SUB LEAK tests. It turns freely when moved by hand.
Until now, this old grinder has given good service in tool and general grinding and more recently buffing with a stitched sisal buff. This reliable-til-now unit appears to be a condenser-start induction motor with a very convenient push-pull switch and I don't want to part with it.
Can anyone here offer any productive comment on cause and resurrection please?
Thankyou in advance.
However, it wouldn't run again a few minutes later. It gave no prior hint of trouble. I have since tested it twice with an appliance tester, once when still warm and again when cold and it fails all three EARTH CONTINUITY, INSULATION, SUB LEAK tests. It turns freely when moved by hand.
Until now, this old grinder has given good service in tool and general grinding and more recently buffing with a stitched sisal buff. This reliable-til-now unit appears to be a condenser-start induction motor with a very convenient push-pull switch and I don't want to part with it.
Can anyone here offer any productive comment on cause and resurrection please?
Thankyou in advance.
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