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Zimmatic blowing fuses going forward
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Posted 7/10/2020 22:19 (#8366328 - in reply to #8366223)
Subject: RE: Zimmatic blowing fuses going forward


SC Nebraska
I had one pull similar stunt this spring. Became convinced fwd and rev contactors were both pulling in on fwd. I blamed the mechanical interlock, can’t explain it, but removed the interlock parts and its run fine ever since.

I think you have a phase to phase short circuit in fwd, so check reversing contactors in panel and booster pump. Otherwise a random gearbox is locking in one direction and blowing fuse instead of tripping thermal overload on a center drive and then getting out of line/safeting out.
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