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Re: [TowerTalk] Looking for UST Control Box

To: J D Lambright <jdlambrightatty@gmail.com>
Subject: Re: [TowerTalk] Looking for UST Control Box
From: Les Kalmus <w2lk@bk-lk.com>
Date: Sun, 24 Jul 2016 13:08:58 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Thanks. I think those may have been used on older towers. I have them on my older UST HDX-589MDPL but a newer HDX-572MDPL has Allen Bradley 802T-AP series J, switches marked type 4, 6P & 13. I bought one on ebay new for about half of UST's asking price. They sell in the range of $80 and up which is why I was wondering how you got yours at that price.

Les W2LK


On 7/24/2016 11:09 AM, J D Lambright wrote:
I replaced the totally corroded limit switches with the exact same ones that came with the towers. The towers had been laying horizontal for several years, and water had gotten inside the limit switch body.

They are GE CR115LB1 with 1NO - 1NC contacts and 1/2 inch npt fitting. They are marked type 1,4,13, A600 P300.

On Sun, Jul 24, 2016 at 9:11 AM, Les Kalmus <w2lk@bk-lk.com <mailto:w2lk@bk-lk.com>> wrote:

    Which kind of limit switch did you buy?

    Les W2LK


    On 7/23/2016 7:43 PM, J D Lambright wrote:

        I have two US Tower HDX-589MDPL towers.  When I purchased
        them, both
        control boxes on the towers were extremely rusted inside and
        in terrible
        condition.  I started from scratch and built 2 new control
        boxes with all
        new components. Also, I replaced the cables running from the
        control box to
        the limit switches to the motor, and to the 120v power source.
        (I also
        replaced each motor, as they were in really bad condition and
        locked up).
        I enclosed each of these cables in flexible conduit with
        watertight
        fittings. I simply used the UST wiring diagram and made mine
        exactly like
        the original ones.  They are very simple and very inexpensive.

        I paid around $45 at Home Depot for each metal weatherproof
        box, and all
        the other components are very cheap.  I spent less than $100
        total on each
        completed box.  They now look and function like new.

        One of the limit switches on each tower was completely rusted
        inside, so I
        replaced them a couple of weeks ago.  UST's price on the limit
        switches was
        way too high, so I bought 5 of them brand new and in the box
        from a surplus
        electronics place on the internet.  They cost me $35 each.

        J D - KF5U
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