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JD6400

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Hi , i went out to a automatic cow brush that had melted its 1ph motor the other day and after stripping the unit off the wall , due to the size of it we decided that the client would take it in to a re winders local to him as i by the time i had gone back to the yard to fetch one of our plant trailers and took it and fetched it back from our usual ones it would have been around a 140 or so mile round trip .

The trouble is that the ones he used , did the usual favourite trick that most re winders seem to like doing of removing any trace of how to re connect it !
Normally i either know how anyway or we mark and photograph the old one prior to removing , but as it was sent as a whole unit ( brush and frame ) i had expected that they would have had the courtesy to have just reconnected the wires into the new motor they have fitted and not just chop the cable instead !

The unit has a small pcb that has a 1ph feed in , a feed out and return for a micro switch that sensors when the cow wants to use it and then the feed out via 4 conductors to the single phase motor ?

This one has me stumped and as we do not deal with the re winders he used , we are getting the old " Your electrician should know this ! " , any ideas appreciated !

It is a 1ph electric cow brush made by Agricow

Hopefully the pictures tell more of the story !?
 
One more question occurred to me, did you find out the reason the original motor burned out? It's possible the control board may have caused it...just a thought, it might be worth investigating before the rewound motor suffers the same fate.

Obviously overloaded, too many cows on the circuit. :ihih:
 
Am i right in thinking that is a typo for terminal 4 and should go to z1 via the blue lead on the capacitor ?

Nope, double checked..

t4 to Blue feed to cap (which is the U1 terminal on the motor block), cap outputs to the Z1 side of the start winding, the output of this is Z2 and this is connected to T7.

The primary winding is U1 and U2 (cable terminal indicators) and you need to connect T5 and T6 to U1 and U2 respectively.

Here, did a quick drawing for you...with labels!

[ElectriciansForums.net] Automatic cow brush motor connections ?
 
Last edited by a moderator:
Nope, double checked..

t4 to Blue feed to cap (which is the U1 terminal on the motor block), cap outputs to the Z1 side of the start winding, the output of this is Z2 and this is connected to T7.

The primary winding is U1 and U2 (cable terminal indicators) and you need to connect T5 and T6 to U1 and U2 respectively.

Here, did a quick drawing for you...with labels!

View attachment 19089

Thanks for that , but i have just tried it and apart from the pcb having some pretty lights that seem to correspond with the micro switch on the brush , it is as dead as a Dodo !

I suppose i will now have to bite the bullet and try and contact the Italian manufactures and try and impress them with my knowledge of Spanish !!!! :grinningelf:

I will update the thread as and when i have a happy cow again ! Unless your good selfs that have already helped come up with any new ideas .

Thanks for the help so far anyway .
 
One place I worked we had a car wash installed, our cars would get filthy just driving to the works.

Have a guess who was fault finding on it and flicked a sticking limit. Didn’t enjoy it one little bit!
 
I fully sympathise with the OP,after my failure to check the maximum RPM on the 44KW motor i accidently fitted to my chicken-patter machine...cows are SO much more durable...
 
Thanks for that , but i have just tried it and apart from the pcb having some pretty lights that seem to correspond with the micro switch on the brush , it is as dead as a Dodo !

I suppose i will now have to bite the bullet and try and contact the Italian manufactures and try and impress them with my knowledge of Spanish !!!! :grinningelf:

I will update the thread as and when i have a happy cow again ! Unless your good selfs that have already helped come up with any new ideas .

Thanks for the help so far anyway .

JD, looking at several videos on YouTube for these things they seem to just sit there doing nothing until a Cow gives them some serious abuse and then the motor starts, it could be your not Cow enough to get it going chap!!
 

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