Single phase 2 pole reversible motor wiring problem

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Old 10-04-13, 10:36 PM
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Single phase 2 pole reversible motor wiring problem

Hi there guys, I'm really hoping you can help me out! I have a brick elevator which is driven by a 240V single phase 2 pole motor. The old motor got damaged so we got a new one which is almost identical, and has the same specs etc - a direct fit. The motor is reversible by means of a 3 way switch - reverse, off, forward.

I have wired the new motor up in the same way as the old one and have rechecked it many times. I have not altered the switch wiring. The motor works perfectly when the switch is in the forward position, but as soon as reverse is selected the main 20A circuit breaker at the meter trips. This is obviously a pretty decent short since the motor is only rated at 3.6A.

Points of info which may/may not be relevant:

-I'm in Australia, so 240V from outlet as standard.
-The forward position on the switch actually makes the motor spin CCW, as due to the transmission this is required for the belt to move forwards/upward.

I've taken some photos of the switch and motor setup so hopefully that helps!











Thanks for any help you can give!
 
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Old 10-04-13, 11:14 PM
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Welcome to the forums.

Not hard to figure out in person. A little tougher on the comp.

Can you get me a part number off the reversing switch ?
 
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Old 10-04-13, 11:37 PM
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This is all the info that is on it, although some numbers are a little rubbed so I hope this is correct!

Kraus & Naimer CA10

M06664/001

A622


Thank you
 
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Old 10-04-13, 11:41 PM
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Just found this via google

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Also, just in case it isn't obvious in the photos, 1/5/9 are bridged together and 3/7/11 are also bridged.
 
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Old 10-06-13, 12:26 AM
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Anyone got any ideas? Have to try and get this working tomorrow morning at work!
 
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