Fadal VMC 15XT - Why have two coolant pumps?
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    Default Fadal VMC 15XT - Why have two coolant pumps?

    Searched for this, Google and PM to no avail. Recently had a Fadal VMC 15XT dropped on our floor, 88HS control. Clean little machine.

    There are two coolant pumps. 10k spindle. One has a mesh basket the pump head sits in, the other nothing. Why have two pumps? I can figure out which is the flood coolant pump but the other one appears to go into the head?

    Machine has the typical Flood/Mist outlet on the back, with the Mist socket plugged. I didn't personally disconnect the machine from previous shop but apparently PO had both coolant pumps plugged into the wall .

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    One to squirt coolant around the head and under the Y axis for thermal control, hey it's a Fadal. The tube squirting coolant under the Y axis will just fill it full of tiny chips so best to disable.

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    Maybe thru spindle coolant


    Sent from my iPhone using Tapatalk Pro

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    Quote Originally Posted by D Nelson View Post
    Maybe thru spindle coolant
    My thinking as well, however, checked the build sheet and this machine doesn't have that option.

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    I've got 3 coolant pumps on my Chevalier.

    One is the flood nozzles around the spindle, one is TSC, and one is flush nozzles in the enclosure to wash the chips into the conveyor.

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    Thru spindle coolant. Its a 220v pump, that is why the mist plug is blocked off.

    Should be pretty easy to figure out where the hose from the 2nd pump goes.

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    10k 15 always had an extra pump for spindle chilling

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    Brilliant, I believe Speedie and David have it. There is a 110V plug on each pump.

    This means that in addition to the closed system requiring the propylene glycol-base DowFrost, Fadal had another spindle chilling option that simply used miscible cutting fluid. I would assume it is this pump that should have the mesh intake filter.

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    Or it could be that someone added an extra pump we have done that on a few fadals.

    only way to be forsure is to check the top of the spindle by pulleys that will tell if you have TSC or not.
    The basket one is it a 2 stage? this is generally a higher pressure pump. again could be for TSC.

    Didnt Fadal have some type of power wash down system at one point? I forget what they call it.

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    Quote Originally Posted by Delw View Post
    Or it could be that someone added an extra pump we have done that on a few fadals.

    only way to be forsure is to check the top of the spindle by pulleys that will tell if you have TSC or not.
    The basket one is it a 2 stage? this is generally a higher pressure pump. again could be for TSC.

    Didnt Fadal have some type of power wash down system at one point? I forget what they call it.
    Hydro-sweep.

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    Quote Originally Posted by Cole2534 View Post
    Hydro-sweep.
    I bought one of the hydrosweeps years ago..

    That was a really bad decision.. I didn't realize the extensive
    amount of sheet metal work that would need to done to retrofit it
    to a standard machine.

    So if anybody needs one, I've got one.. Also since nobody is ever
    going to need it, is there anything fun I can do with the big spinning
    drum???

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    Thats it hydrosweep as what I was thinking of.



    Quote Originally Posted by Bobw View Post
    I bought one of the hydrosweeps years ago..

    So if anybody needs one, I've got one.. Also since nobody is ever
    going to need it, is there anything fun I can do with the big spinning
    drum???

    Older kids that wont fit in a dryer anymore

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    Both pumps are identical, “Gusher” something or other. From what I’ve seen in the Fadal parts manuals the TSC machines had a higher pressure pump w/a different config.

    Hydrosweep had a (centrifugal?) drum unit? Sounds like quite the contraption.

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    Quote Originally Posted by RC Mech View Post
    Both pumps are identical, “Gusher” something or other. From what I’ve seen in the Fadal parts manuals the TSC machines had a higher pressure pump w/a different config.

    Hydrosweep had a (centrifugal?) drum unit? Sounds like quite the contraption.
    Its a total cluster fuck.. The floors in the machine have to be slanted to the front. The lower front
    sheet metal falls straight down, instead of angled in. There are (I guess) wash down bars in the back
    of the machine to move chips to the front. They then fall in a trough across the front of the machine,
    and are washed to the left by coolant. They are then picked up by this big stupid giant drum, where they
    are supposed to fall out on a chute at the top, and then slide down another trough into a barrel..

    Its like a chip conveyor gone stupid.


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