Help! AM dosing pump

Discussion in 'Test Kits, Controllers, Reactors and Dosers' started by keyaam, 11 Aug 2010.

  1. keyaam

    keyaam

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    I acquired an AM auto topup unit. It uses a dosing pump but cant get the think to work. Any ideas?
     
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  3. amalick

    amalick

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    Thats a very broad statement, What wont work ?

    Does it have power ?
    Is the float switch operational ?
    Did you try bridging it manually, as if the float switch was in the "on" position ?

    Etc.. Etc..
     
  4. lIghty

    lIghty

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    What dosing pump is it? single or multi with controller?
     
  5. keyaam

    keyaam Thread Starter

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    [​IMG]

    The float switch works as well as the pump. It draws water into the tubing but does not make its way to the dosing pump
     
  6. martin

    martin Reef Adict

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    Then I think the silicon tube in the pump or elsewhere has a hole in it. Or check that the runners are covering the whole squeezing tube when turning.
     
  7. martin

    martin Reef Adict

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    Oh yes also check that the holding screws are in properly and not leaking and that the tube isn't twisted.
     
  8. vatso

    vatso

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    Martin when you going to start reefing again?
     
  9. keyaam

    keyaam Thread Starter

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    Ill check later martin. thanks
     
  10. viper357

    viper357 Admin MASA Contributor

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    I have the same dosing pump with all new tubes and it refuses to suck up the liquid on it's own, it will only suck up about an inch or two. I have to prime the unit by gently sucking on the tube until the liquid just starts to come out of the dosing unit, then it works fine.
     
  11. lIghty

    lIghty

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    Like martin said, make sure those screw where the pipe connect are tight, otherwise it sucks the smallest amount of air!

    Also, there should be check valves inline too!
     
  12. leslie hempel

    leslie hempel Moderator MASA Contributor

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    keyaam, this unit only pumps 3lt per hour specifically to limit overdosing.. the tube in tghe unit may need to be "greased" use some vaseline it works fine.. if the tube is perished it will need to be replaced.. as if it is ruptured it cannot push the air out of the tube and work the water through..
     
  13. keyaam

    keyaam Thread Starter

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    Thanks for the reply guys. It was working. I guess i did something wrong
     
  14. leslie hempel

    leslie hempel Moderator MASA Contributor

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    um like not plug it in ? ")
     
  15. keyaam

    keyaam Thread Starter

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    No. the tubing i used wasnt sealing properly. Ill have to double check later
     
  16. leslie hempel

    leslie hempel Moderator MASA Contributor

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    cool.. glad you sorted :)
     
  17. keyaam

    keyaam Thread Starter

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    It works. I forget to connect the non return valve on the inlet. thanks for the assist guys
     
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