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  1. #1
    Join Date
    Mar 2011
    Location
    Taree NSW
    Posts
    119

    Default Beaver mill owner

    Hi guys,
    I am looking for a Beaver VBRP MK2 mill owner who is willing to correspond with me for exchange of information , advice and any relevant information re this fabulous old mill - I have the instruction manual but can't afford at this time the 188 page workshop manual advertised for 65 GBP My current problem is a non working Y axis motor which I will attempt to remove today for my motor man to check - Have made a new coolant pump and it is working well however all switches are are in the ON position and wont turn OFF- I removed the coolant pump switch, flooded it with WD40 then blew out the excess and it now works correctly - will do the same with the other 2 switches only using contactor cleaner in lieu of WD40
    all contributions gratefully received
    Alf

  2. #2
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Alf,

    A lot of the time the old contactors get sticky plungers and don't always bottom out, leaving the contacts to arc and burn, then go open circuit.
    Many of them can be taken apart and cleaned. I've actually seen dead insects under the plunger, squashed as the contactor operated.
    Best Regards:
    Baron J.

  3. #3
    Join Date
    Mar 2011
    Location
    Taree NSW
    Posts
    119

    Default

    Hi Baron,
    All fixed -dismantled one switch which I was loath to do - spring fell out and I couldn't see where it came from - reassembled it, sprayed internals with contactor cleaner-sprayed push buttons with brake cleaner then WD40 -now all work correctly and my X axis motor works as well - all good

  4. #4
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Alf,

    It might pay to do a plan of the wiring, those old contactors can get quite troublesome if they have been allowed to arc and not close properly. They should operate with a firm clunk. At one time you could buy spare contacts and coils, but it seems that nowadays you have to buy the complete contactor. They never were cheap, I'll bet they are still pricey.
    Best Regards:
    Baron J.

  5. #5
    Join Date
    Oct 2008
    Location
    N.W.Tasmania
    Posts
    1,407

    Default

    Quote Originally Posted by BaronJ View Post
    Hi Alf,

    It might pay to do a plan of the wiring, those old contactors can get quite troublesome if they have been allowed to arc and not close properly. They should operate with a firm clunk. At one time you could buy spare contacts and coils, but it seems that nowadays you have to buy the complete contactor. They never were cheap, I'll bet they are still pricey.
    Just on the subject of replaceable contacts in contactors, many years ago while I was still a young teenager, our domestic water pump was inundated when the river flooded. Dad took the motor in to the rewinders to have it dried out and checked / revarnished etc, and a neighbour who was a recently retired electrician, cleaned out the AD40 contactor, dried it in the oven, and after further electrical checks pronounced it fit for use again. He told us that they often used a thripenny bit which were pure silver, as a new contact, if the contacts were burned. A good cheap fix at the time.

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