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  • #16
    Re: Flojet pumps

    Just out of interest are you fitting them to the outlet side (best choice) of the pump or the inlet side ( [smiley=evil.gif] side) of the pump?

    Reason for the readjustment for others info too is that the pressure loss past the filter ads to the pressure the pump must generate at a given flow rate and this varies slightly with pressure. This also will show as the filter clogs more in lower pressure at the head so change the filters often .

    Last couple of things on procons or similar if they are a model with an inlet screen fitted make sure it gets degunged once in a while and dont let it run dry or try and prime it for more than 20-30 seconds at a time or the seals will get damaged by the heat generated

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    • #17
      Re: Flojet pumps

      as the majority of machines have internal pumps the filter is fitted before the pump(also protects pump)

      when we inital setup, we prime the filter and system with mains water supply. this way everything is wet on start up

      graham

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      • #18
        Re: Flojet pumps

        To answer the original Question, have a look at a large caravan equipment supplier, they will normally have small no name pressure pumps at around the $80 mark, though I am not sure if there are any that will run on 240v, most would be 12v DC

        if all you need to do is have a pump to help the water through a filter and be able to lift it some distance (say the bottle is under the bench) then look at car fuel pumps as well, once again 12v but compact and robust

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        • #19
          Re: Flojet pumps

          Hi Sunbeamer,

          it is possible to get 240V flojets but they are fairly expensive ($300+) and there is some additional problems with feeding one pump with another, you can fit a pressure regulator but that is more expense and fuss. Best solution is to use the 5 micron filter and pesonally place it after the pump rather than in the suction line and that wil sort it.

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          • #20
            Re: Flojet pumps

            Pressurised water systems on caravans, boats, usually consist of:

            water in a container at atmospheric pressure.
            Hose to a flojet style pump with pressure valve
            Hose from pump to a filter
            Filter to taps.

            When tap is opened, in-line water pressure drops, and a switch on the pump automatically activates the pump until the tap is closed again.

            The simple solution here is to go:

            Water bottle - pump - filter -coffee machine.

            The pumps draw about 7 amps at 12VDC, so sould need a heavy-duty transformer from 240V AC.

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            • #21
              Re: Flojet pumps

              I PMed this to Dave last week but thought I should put it up for anyone who can use it.

              Just to remind you, my machine is an Aurora Euopa single group spring lever. No pump needed ( it does have an autofill circuit ) but it needs over 2 bar to refill the boiler and I cant plumb it where I live.
              I went to a camping R/V place in Ferntree Gully and bought a 12 Volt caravan pump.
              Cost $ 130. Brand Shurflo. Model 2088 422 144.
              Went to Bunnings and bought a HPM Garden light transformer # RGLTR60 - 240v ac down to 12v ac. I think $43.
              Went to Jaycar and bought a rectifier CAT. NO. ZR1324 and the appropriate capacitor ( to smooth it). Under $10.
              The rectifier and  capacitor change 12v ac to 12v dc.
              Screwed it all on a piece of board so it wouldnt move around.
              Connected the 240v ac power from the autofill circuit to the 240v transformer and away it went. i.e. when the autofill circuit decides the machine needs more water it sends 240v to the solenoid and this is where I connected in my outlet to the transformer.  So the transformer only gets power when the autofill circuit activates.
              There are caveats. Im not an electrician. The transformer is way undersized for the pump but cycles so infrequently that it doesnt even begin to get warm.

              The cheapest Flojet I could find was $300 +

              John

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