Neo's auto topup try 1

Discussion in 'Anything DIY Related' started by neo, 12 Dec 2009.

  1. neo

    neo

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    Howdy,
    bought me a float switch and was sitting around contemplating how I'm going to mount it, so here's my try at it.

    The parts:
    float switch,
    female adapter,
    20mm male adapter - NB must be 20mm,
    25mm T-piece - NB must be 25mm,
    300mm 20mm pipe,
    small pieces of 25mm pipe.
    [​IMG]
    Cut 2 pieces of the 25mm pipe just long enough to fit into the T-piece on both sides of the straight part of the T and use as a reducer, the blue inside the T in pic above.
    The 20mm pipe fits nicely into this and slides easyly up-down in it.

    Take male adapter and saw a gap into it on the thread side, like such...
    [​IMG]

    the gap width must be wide enough to fit over your glass thickness of your sump.

    Put male/femal together to form a screw clamp...
    [​IMG]
    Now, the 20mm pip-side of the male adapter fits nice and tight into the 25mm T-pice...
    [​IMG]

    all together...
    [​IMG]

    take the 20mm pipe and make 6 10mm cuts into the end of it with stanley knife,
    take the nut of the float switch and trim the corners, insert into end of pipe where you made the slits, screw float into nut....(bad pic sorry, hope you get the idea)
    [​IMG]

    push 20mm pipe with float through T-piece,

    mount with diy clamp onto glass,
    adjust pipe height for water level....
    [​IMG]

    and..
    [​IMG]


    the red rubber band is temp to keep the 20mm pipe in pos otherwise it slides out,
    I must still connect the pump and add a second float for backup cut-out but this will be mounted in similar way i think.

    I had the pieces in the garage so it only costed me the 75 bugs for the float.
     
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  3. irshaad

    irshaad

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    Nice Diy.. How are you going to connect switch to pump? With relay or directly? These R70 switches hav a low current tolerance, and fuse when connected directly to pump, unless urs has a higher amp rating. If so, can u send one my way please?
     
  4. lIghty

    lIghty

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    I would definately advise using a low voltage through the switch to drive a relay, you would hate to have 220V going directly into your tank.
     
  5. Sammy

    Sammy

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    I so agree, 5v relay broe !!! Also what about safety, a snail or algea jamming the switch ??? thats always been my worry ???
     
  6. Tobes

    Tobes Retired Moderator

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    I have used a 220V float switch connected directly to a 220V pump for the last 2 years. Not once did it get stuck, shocked me or anything like that. Regular checkups, good insulation and maintenace is the key ;)
     
  7. lIghty

    lIghty

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    You can use 220V, But Tobes, Unless you know what you are doing its extremely dangerous, there are special provisions WRT insulation (which most people don't know) when working near to water, it wouldn't be a problem if the leads from the switch were long enough to do the connects far from the water, but in this case the connections are in the pipe that hangs in the water, salt creep etc will make this extremely dangerous. To my knowledge all manufacturers make theirs with a low voltage system. I've always beleived in the double switch setup, halves the chance of something going wrong.
     
  8. Tobes

    Tobes Retired Moderator

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    A Beautiful place!
    I agree, mine was far away from water and properly insulated ;)
     
  9. Junz

    Junz

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    nice work man!
     
  10. mnd123

    mnd123

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    very very nice DIY Neo - awesome that you posted thank you
     
  11. mandarinman

    mandarinman

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    looks really cool ,well done. thanks for the pics
     
  12. JD167

    JD167

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    Very cool DIY!
     
  13. Titanse

    Titanse

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    Looks very interesting... would love to see how this setup works...
     
  14. Cryp

    Cryp

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    Interesting DIY project, keep us posted on the progress. Will love to see how it works?
     
  15. neo

    neo Thread Starter

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    The price I paid for the switch is not the normal price, it would go for about double that, thus about R140, hopefully the quality is OK.
    It is rated for 220volt, 0,5amp switching and 1amp continuas so wathever I do I will first measure the switch-on current, will use it to latch a realy and the realy will drive the pump.
    I take note of the snail/dirt issue and will inspect it for free movement dayly.
    I am going to add a second float to shutdown the pump if water ever reaches it, just didn't bought it yet cause I first wanted to figure out what to do.
    The place I bought the foat from got some other types of floats as well, just more expensive, might play with them at some time.
    Will keep you updated with pics as I go on.
     
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