Sounds like the reverse relay contacts are burnt. The symptoms suggest
little or no shunt field power in reverse. This is a very common problem.
If your FW relay is identical to the reverse relay (mine was), I think you
can temporarily exchange them to see if the symptoms disappear.
A warning - the motor armature should never be powered up without an
operating field. You will overheat and damage the motor if you keep
trying
to run it that way. I hope you haven't already done so. (IMO, GE should
have included some kind of safety circuit to inhibit start contactor
pull-in
unless it detected normal field current.)
David Roden - Akron, Ohio, USA
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