Return pump question

Discussion in 'Beginner Discussions' started by gaboon, 3 Mar 2008.

  1. gaboon

    gaboon

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    Heres a real dof one, had a power cut this morning, went home at lunchtime and the return pump (Rio) is pumping with triple the force it had before. What is going on here?
     
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  3. shan

    shan

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    if you ever find out what happened - do share
     
  4. Reef Inmate

    Reef Inmate

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    Maybe something was stuck inside all along and when the power came back on it blew the culprit out.
     
  5. SIMS

    SIMS

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    NO I have a Rio 14hf I think and it does the same thing...think Andrew said when it goes off and on it sometimes spins in reverse....
     
  6. jacquesb

    jacquesb Retired Moderator

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    Hi Gaboon - do you have an air-hole in the pipe at the top-end of the return, where the return pipe goes back into the tank? If not, you might have had SOME water siphoning going on, and the water that was flowing in a reverse direction back into your sump, might indeed have "cleaned out" the return pump.... And the impeller, etc...
     
  7. gaboon

    gaboon Thread Starter

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    Can someone with decent bandwidth please check this clip of the flow coming from the tank. Now that the return pump is doing what its supposed to, I'm concerned I've got too much flow that is bypassing the skimmer. Please comment.
    http://s111.photobucket.com/albums/n...t=100_1884.flv
     
  8. viper357

    viper357 Admin MASA Contributor

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    Does look like a bit too much flow going on there, I wouldn't be happy with that, I would throttle it down a bit.
     
  9. gaboon

    gaboon Thread Starter

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    Thanks viper357, I cant adjust the pump. What else could I do?
     
  10. viper357

    viper357 Admin MASA Contributor

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    Any chance you could fit a ball valve just above the pump, before it goes into the display tank?
     
  11. gaboon

    gaboon Thread Starter

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    Could do that. I'll get one tomorrow. Could it put a lot of strain on the pump? Sorry for the dumb questions:blushing:
     
  12. jacquesb

    jacquesb Retired Moderator

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    Hi Gaboon - it would most likely put SOME strain on the pump. But unless you run the pump with the ball-valve / gate-valve completely closed, it should not damage the pump in any way.
     
  13. gaboon

    gaboon Thread Starter

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    Thanks for the help, got a gatevalve today. Will let you know how it goes
     
  14. gaboon

    gaboon Thread Starter

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    Added this to the pump, sorted. thanks!

    [​IMG]
     
  15. viper357

    viper357 Admin MASA Contributor

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    Looks good, cool :)
     
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