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Solenoid Stuck Open

Discussion in 'CO2 Enrichment' started by scottward, Oct 12, 2009.

  1. scottward

    scottward Guru Class Expert

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    Hi. This morning I noticed CO2 bubbling through my bubble counter, even though the CO2 wasn't meant to switch on until later in the day. I disconnected the CO2 solenoid from the power, waited a few minutes, and the CO2 is still bubbling through at the usual rate...

    So, the solenoid is stuck in the open position.

    It is a Red Sea solenoid and I have had it for about 18 months. It has been working perfectly until now.

    I am hoping that there is some way that I can fix it, perhaps I can open it up and inspect the parts inside? Maybe something is just stuck?

    Help! :eek:

    Scott.
     
  2. Philosophos

    Philosophos Lifetime Charter Member
    Lifetime Member

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    Take the solenoid apart and clean it very well; if it has a rubber diaphragm on it pay close attention to that part, and inspect it for damage. I've had solenoids leak on me before and it isn't fun. Fixing them is a matter of close inspection.

    -Philosophos
     
  3. scottward

    scottward Guru Class Expert

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    Ah ok - so it's possible that mechanically it is working but may just have a leak in an internal diaphragm (if it has a diaphragm)? Hopefully this would be a spare part that I can get from Red Sea if it has worn out.

    I actually thought it would be a purely mechanical thing, with no parts that can wear out.

    Hopefully I can open the thing up?

    Scott.
     
  4. scottward

    scottward Guru Class Expert

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    Fixed!

    I was able to loosen a nut on one side of the solenoid and slide the assembly out of the casing. I was then able to open the assembly up and examine it. There was some gunk built up at one end which I thoroughly cleaned. After reassembling it it worked again.

    Just thought I would share this in case anybody else comes across this thread down the track and needs some help.

    Scott.
     
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