DIY topup help please

Discussion in 'Anything DIY Related' started by viper357, 3 Jul 2009.

  1. viper357

    viper357 Admin MASA Contributor

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    Hi guys

    I have a 12v pump and 220v float switch, but I have already burned out 2 float switches so I'm guessing I need to put a relay on somewhere. Can someone help me out as to what type of relay I need and how do I wire it up? Thanks.
     
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  3. ben lloyd

    ben lloyd

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    do you have a 220 volts transformer for the 12v pump? is it 12volt ac or dc
     
  4. Blackrat

    Blackrat

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    you switch cant handle the amps, thats why its burning up, too much current draw.

    whats your power source to the pump ? If its a transformer, use the switch to cut power to that , high voltage low amps ;-)
     
  5. Manic

    Manic Moderator

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    Does the pump plug into a 220V power source where it is then converted at the plug to 12v by a transformer. So you can use a relay or you can use a small extension cord and put the float switch before the transformer. So that the float switch is between the plug and transformer for the pump...

    I just use a 220V pump. The smallest one I could find, think it pumps 100 Lph and only cost R40...
     
  6. Tony

    Tony

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    I would personally get a 220V pump. Hydor or Eheim make mini pumps
     
  7. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Thanks Guys.

    The pump is a 12v caravan pump, one of those long thin ones, that is plugged into one of those multi-adaptors which is on 12v, I have split the wire so that the floatswitch is between the pump and the power, I think the pump is too powerful and is burning out the switches, the pump has a head of about 4 metres so it's a pretty powerful bugger.

    Here's a pic of how it's wired up at the moment:
    [​IMG]
     
  8. ben lloyd

    ben lloyd

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    is that thingie on the left the float switch it looks right
     
  9. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Yes, stop laughing at my drawing :p
     
  10. ben lloyd

    ben lloyd

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    :lol:ok will tray but your pump is to strong get a industrial float switch.
     
  11. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Yeah, like Blackrat said, I think the pump is too powerful and the high current draw is burning out the switches, so I must either get a smaller pump or bigger floatswitch and I can then run it the same as in the pic without a relay or rectifier?
     
  12. lIghty

    lIghty

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    The pump must be pulling to much amperage.

    do it like this Dean

    [​IMG]

    PS, to change the float between NC (normally closed) and NO (normally open) just remove the "foam" part and turn it over/around.
     
  13. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Thanks lighty, that looks doable, is there a special name for the type of relay I need? What must I ask for?
     
  14. viper357

    viper357 Thread Starter Admin MASA Contributor

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  15. lIghty

    lIghty

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    you get 1000's different types but any smallish 12volt relay will do.

    just make sure its rated for the current of the pump.

    Do you have an RS components near by?
     
  16. lIghty

    lIghty

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    If you wanna go fancy get a SSR (Solid State Relay) but something like on the WWW Jacques posted is fine.
     
  17. viper357

    viper357 Thread Starter Admin MASA Contributor

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  18. lIghty

    lIghty

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    I would just use the Code: JM67X one, it rated 12V 12A but doubt you would draw this much currect, but anying equivilent to that would be ok.

    You could just soler the wire dirrectly to the relay.
     
  19. lanzo

    lanzo Sponsor

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  20. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Thanks lighty.

    Cool video Lanzo, thanks, isn't that the same guy that made his brother drink a cup of skimmate?
     
  21. RUAN

    RUAN

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    yip only for 10 bucs
     
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