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Thread: Plumbing in necessary?

  1. #1
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    Plumbing in necessary?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Im looking at upgrading my machine and eyeing off some ex-commercial machines. I know more or less what to look for in a 2nd hand machine, but Im wondering whether you can run them without plumbing them in...

    During my coffee training, we used 3 group Wegas that had been run into those large water bottles , but I think that was only for the waste water.

    Does anyone have any idea whether you can do a similar setup on the input water? Im guessing a pump of some sort would be required but its still probably easier/cheaper than getting a plumber out...

  2. #2
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    Re: Plumbing in necessary?



    yes you can run off a tank you just need to adjust the pressure at the pump

    the issue is the rotary pumps dont really like to self prime

    here is my set up in a rental house i am in . its simple and easy to do but its not super pretty (but works well)

    if i was to put the water under the bench i would incorporate a small pressure pump to feed the rotary pump. but if your going under bench just plumb it in to the main.....

    once i get back into my own house it will be plumed back into mains

  3. #3
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    Re: Plumbing in necessary?

    Maheel nice solution;

    I probably will tap with non return valve because you do not want to get any air in the line.

    Regards

    Renzo
    Di Bartoli Home Barista Centre

  4. #4
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    Re: Plumbing in necessary?

    Hi Renzo

    your right i would also put in a check valve if the water was not above the pump. there are a few ways of doing this mine is far from perfect

    this system is just a short term one, i really prefer fully plumbed

    some of the negative issues for mine are
    1. water gets quite warm, i intend to find a "shelf" to put across the top to lift the tank away from the heat a little.

    2. the heat and the plastic concern me = possible chemical ingestion higher than "normal"
    but the reality is I ingest a lot of chemicals every day regardless.....

    3. i am not filtering the water.... normally i have a inline filter on mains line.... thats not great..

    4. how fresh is the water going in ??? i keep it low (5cm above the pipe) and tip it out every other day and refill with all fresh. All tanked machines have this issue....

    the pump on this machine is external and is sitting behind the machine and you can see the 2nd pipe running at the back that actually goes to the machine after the pump

  5. #5
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    Re: Plumbing in necessary?

    Quote Originally Posted by 29252C212128440 link=1286364130/1#1 date=1286403019
    rotary pumps dont really like to self prime
    They actually self prime fairly well but the biggest problem is airlocks in the suction line with a lift on that side of the pump. You wont need a second pump if you go to a low tank (3-4 lower max) if you fit a check valve to the tank outlet.

    The layout shown here is actually not a great setup as the suction line will have a gut full of air at the top of the loop so a 90 degree rotation of the pump to lose that would be far better. The only reason Procons were ever mounted vertically is that in theory there is always some fluid left in the pump case to lubricate the vanes when they run out of fluid. This still has problems if that is all the water available it will eventually boil to steam :(

  6. #6
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    Re: Plumbing in necessary?

    Behmor Brazen - $249 - Free Freight
    Whoa, you guys are all over this! Cheers for the advice, Im still not sure which way Ill end up going...



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