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  1. #1
    Join Date
    May 2010
    Location
    Perth
    Posts
    135

    Default coolant pump setup for Bridgeport clone (110VAC?)

    G'Day,

    still progressing on the bridgeport clone mill I rescued. (Named "Bin'da" for now)

    It appears that there used to be a coolant system on the mill, with the pump located inside the base casting.
    I have found some cables which lead into the base, coming off a 110VAC transformer winding (same 110VAC which powers the X axis powerfeed)

    Is that understanding of the mounting location correct?
    Any tips for cleaning the sludge out of the base casting (looks like it's been open for a while - dust, bugs, etc) (I do not know if it was oil, or water based coolant/fluids in there)
    reccomendations on suitable replacement units to put in there? (source?)
    Does the intended fluid impact on the replacement unit reccomendations?

    on resurrecting the mill... I have catalogued all damage, replaced all missing knobs, withdrawn the snapped Y screw, constructed a replacement quill feed clutch, and am 75% through building the quill finefeed handle.
    I stil have the lubrication, X and Y screws, and quill fast feed to do, then it's all about refinishing the whole machine in preparation for doing the wiring and moving the controls to a more "friendly" location (currently split between the RHS side of the base casting, and a small panel located under the turret (behind the spindle))

    Thanks,
    Des

  2. #2
    Join Date
    Apr 2008
    Location
    Perth
    Posts
    269

    Default Sludge Removal

    Elbow grease will do the job . Works for me. Seriously though Bloke. Would not use any high pressure kind of device although that is tempting. I would just get into with my hands, get some throw away gloves, scraper if it fits in, etc. Good luck.

    DD

  3. #3
    Join Date
    May 2010
    Location
    Perth
    Posts
    135

    Default

    Thanks - that was/is the plan but I guess I was more worried if there was any issues with chemical reactions from the coolant/fluids and cleaning products.... I remember a few "pucker moments" when the cleaning products we used at the supermarket mixed and started foaming out some noxious gases.

    The plan (unless pointed elsewhere) is to scrape through for bulk, then a liberal dose of Simple Green, then wire brush and water with a final drying with a heat gun.
    Once that's done I'l spritz around with a trigger pack full of diesel to hold any rust at bay, since it might be some time before I think about painting in there.

    Des

    Quote Originally Posted by Dingo Dog View Post
    Elbow grease will do the job . Works for me. Seriously though Bloke. Would not use any high pressure kind of device although that is tempting. I would just get into with my hands, get some throw away gloves, scraper if it fits in, etc. Good luck.

    DD

  4. #4
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Hi Des
    Quote Originally Posted by desbromilow View Post
    It appears that there used to be a coolant system on the mill, with the pump located inside the base casting.
    I have found some cables which lead into the base, coming off a 110VAC transformer winding (same 110VAC which powers the X axis powerfeed)
    While anything is possible I dont recall having seen a coolant pump running off a transformer before. All the 3 phase machines I have seen have 3 phase pumps......though granted things could change over the years when things break. You say it comes off the 110V windings? So no switching? I wonder if it was for a light? Got a picture of the electrical cabinet?

    As far as clearing out the base goes, nasty job enjoy . Depending where the machine is going getting around the back next time to clean it might be painful. Some guys have raised their mill say 4" and added a separate coolant tank under the mill. Failing that adding a tap to the base for draining might help.

    Stuart

  5. #5
    Join Date
    May 2010
    Location
    Perth
    Posts
    135

    Default

    Stu,

    thanks for the suggestion regarding raising the mill and placing a tank underneath... I can probably do that quite easily, and since the mill will be placed into a corner, the thought of cleaning it out again in the future is something I hadn't considered - Thanks!

    The coolant pump certainly comes off the 110VAC winding, but not directly - there is a switch for it on the exisiting control panel. (the pump that is, not the winding)
    I do have a schematic of the mill (based on another clone), but it's not verified yet, so I don't feel comfortable releasing it as gospel at this stage.
    The 110VAC winding appears to be used only for the Power feed, and the coolant pump - the cable to the coolant pump has been traced from the winding, to the switch, and straight out of the gland to the base where it has been simply cut off inside the base. I do see that there is 2 110VAC sockets on the side of the control panel (containing the transformer, plus motor controls (contactor, indication lights, reversing switch, etc) which also come off the 110VAC winding, but they are not switched. I presume those sockets are for fixed lighting, or other uses where they have self contained switches/controls.

    I'll hunt around for a suitable supplier of a 3phase coolant pump if I can't locate a suitable replacement. But by following your suggestion of raising the mill and putting the tank underneath, I can delay the coolant system for a while after completing everything else if I need to.
    Thanks,
    Des


    Quote Originally Posted by Stustoys View Post
    Hi Des


    While anything is possible I dont recall having seen a coolant pump running off a transformer before. All the 3 phase machines I have seen have 3 phase pumps......though granted things could change over the years when things break. You say it comes off the 110V windings? So no switching? I wonder if it was for a light? Got a picture of the electrical cabinet?

    As far as clearing out the base goes, nasty job enjoy . Depending where the machine is going getting around the back next time to clean it might be painful. Some guys have raised their mill say 4" and added a separate coolant tank under the mill. Failing that adding a tap to the base for draining might help.

    Stuart

  6. #6
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Hi Des,

    If you havent seen this already its worth a look.
    http://www.woodworkforums.com/f65/mi...t-tray-169680/

    You have 3 phase or will you be using a VSD?
    If you'll be using a VSD I wouldn't bother looking for a 3 phase pump. My comment about "all the 3 phase etc" was more about what I would expect to see. Doesnt mean thats how it was or how it needs to be.

    Be a little careful with 110VAC sockets, they aren't always wired to 110V**. If I recall correctly.... on my machine one socket is 24V* and the other 110V.......... I cant see how that could possibly lead to problems!!!!!!!!!


    *it may even be 12V between the 24V and 12V taps
    **on a sample of 1 in this case.

    Stuart

  7. #7
    Join Date
    May 2010
    Location
    Perth
    Posts
    135

    Default

    Thanks for the feedback and the addictive link!!!

    VSD is on the cards, but might be some time down the track (need to check the motor first) - I will have 3 phase in the shed when it's built hence the lack of urgency on the VSD.

    I haven't checked voltages with a meter since the cabling is still damaged and needing work (not to mention I don't have a 3phase outlet yet.)
    I based my comments on the internal labeling of the wires, and the termination points within the panel.

    Looking at the risers in the link you supplied has certainly given me some ideas - Thanks!

    Des


    Quote Originally Posted by Stustoys View Post
    Hi Des,

    If you havent seen this already its worth a look.
    http://www.woodworkforums.com/f65/mi...t-tray-169680/

    You have 3 phase or will you be using a VSD?
    If you'll be using a VSD I wouldn't bother looking for a 3 phase pump. My comment about "all the 3 phase etc" was more about what I would expect to see. Doesnt mean thats how it was or how it needs to be.

    Be a little careful with 110VAC sockets, they aren't always wired to 110V**. If I recall correctly.... on my machine one socket is 24V* and the other 110V.......... I cant see how that could possibly lead to problems!!!!!!!!!


    *it may even be 12V between the 24V and 12V taps
    **on a sample of 1 in this case.

    Stuart

  8. #8
    Dave J Guest

    Default

    I am not sure whether you have it mobile, but if you do take it outside and let the hose run in it to flush it out.

    Dave

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