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how to check rotation

 
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PostPosted: Sun Oct 27, 2013 9:17 pm    Post subject: how to check rotation Reply with quote

Hi! Help me to understand how to check rotation on a hermetic three phase refrigeration compressor for start up.
Any ideas would be greatly appreciated.
Thanks!
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train123



Joined: 26 Jan 2010
Posts: 88
Location: Canada

PostPosted: Thu Nov 07, 2013 6:04 pm    Post subject: Reply with quote

You can usually hear it running.
A second method is to check the current draw of the compressor.
You should see a high current draw when it starts and it should drop once it is running. No current draw means no running.
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