Help with dewhurst wiring

[Alan Waddington 2Participant @alanwaddington2]

ok, ive got the basic diagram, but no amount of web trawling brings up a diagram showing a start capacitor and centrifugal switch. Can anyone do me a diagram showing how to connect these into the circuit.

Have had it running both forward and reverse, but running for a minute or so in reverse blew the start cap, so i’m guessing how i had it wired wasn’t dropping the capacitor out when reversed.

This is the basic schematic im using.

TIA…….been at it a couple of hours now with no joy, and ive gone wire blind now

[Alan Waddington 2Participant @alanwaddington2]

[NJHParticipant @njh]

Hi Alan

Have a look in my photos for one called “Myford Reversing” – all should then be clear

Norman

Edited By NJH on 04/08/2018 17:35:21

[Les Jones 1Participant @lesjones1]

The main winding is connected to terminals 5 and 7 on the Duhurst switch.. The start winding with the centrifugal switch and capacitor in series with it connect to terminals 2 and 6 on the Dewhurst switch. You may need to post pictures of the connection box on your motor if the above information is not clear.

Les.

[Alan Waddington 2Participant @alanwaddington2]

Posted by NJH on 04/08/2018 17:34:34:

Hi Alan

Have a look in my photos for one called “Myford Reversing” – all should then be clear

Norman

Edited By NJH on 04/08/2018 17:35:21

Cheers Norman, but im still not getting it ……could be time for a beer

[Alan Waddington 2Participant @alanwaddington2]

Posted by Les Jones 1 on 04/08/2018 17:51:19:

The main winding is connected to terminals 5 and 7 on the Duhurst switch.. The start winding with the centrifugal switch and capacitor in series with it connect to terminals 2 and 6 on the Dewhurst switch. You may need to post pictures of the connection box on your motor if the above information is not clear.

Les.

Mmhh, that’s how i thought i had done it…….will have to order a new capacitor and try again. Thanks for the help chaps, will report back in due course.

[JohnFParticipant @johnf59703]

Alan W please PM me with your email and I'll send you the original info on PDF files — would put it on here but cannot up load PDF's plus maybe infringe copyright ?

John

[Alan Waddington 2Participant @alanwaddington2]

Just an update, to thank everyone for their help. Turns out i had wired it correctly, must have just been bad luck that the capacitor decided to self destruct. Fitted a new one this morning, and checked with meter that it was dropping out in both forward and reverse directions…….All good, and no smoke escaping.

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