Full Co2 system Failure - The Planted Tank Forum
 
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post #1 of 13 (permalink) Old 07-04-2013, 11:06 PM Thread Starter
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Full Co2 system Failure

New Question

After realizing my old solenoid was the point of failure I bought a new clippard EV-2M-24 VDC. I know it needs a 24v DC power adapter but I don't know what the solenoid's exact requirements are. I bought a 24vdc 350mA adapter and the solenoid didn't work. What exactly do I need?
Thanks!

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I am getting ready to set up my next tank so I have been working on my co2 regulator.

1st problem: When I un-plug the solenoid (EVO-3M-12 VDC with extra port plugged) the co2 keeps coming out of the bubble counter even after a few minutes, it doesn't stop. But when I plug and un-plug the solenoid I can hear it open and close.

2. I then close the valve on the co2 bottle and it continues to bubble

3. If I decrease the pressure to zero on the regulator it will eventually stop but it takes too long.

4. The only thing that effectively stops the co2 is the Swagelok needle valve when closed.

The needle valve appears to be the only thing that is working. What should I do? Or where should I start?

Here is a picture of it. I have not been using that airline tubing, that was just when I wanted to see if it worked. Since I have been using pressure tubing.


Thanks for looking

Last edited by karatekid14; 08-29-2013 at 04:11 AM. Reason: New Question
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post #2 of 13 (permalink) Old 07-05-2013, 12:02 AM
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Regardless of anything else the solenoid should stop the flow. So, that's your point of failure.

If you have ever dismanteled that solenoid you will be lucky for it to work ever again.

Another possibility is something got inside preventing the closure. Plug it in, increase WP to ~60psi and see if it will clear it up (removing needle valve prior is a good idea).

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post #3 of 13 (permalink) Old 07-05-2013, 12:29 AM
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You need to replace the solenoid. That's the problem I am having as well.
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post #4 of 13 (permalink) Old 07-05-2013, 02:05 PM
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Depending on where the solenoid is in the chain, this could actually be normal behavior. If the solenoid is before the needle valve, then when the solenoid closes, you will still have pressure in the segment between the NV and the Sol, which will continue to bleed off until you reach 0 PSI. This means that you will still see bubbles until that pressure bleeds off.

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It's CO2. See-Oh-Two. Not C02 (see-zero-two).
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post #5 of 13 (permalink) Old 07-05-2013, 06:51 PM Thread Starter
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I knew the solenoid was broken (I had tried the high pressure thing) but what I find odd is that the shut off valve on the co2 tank doesn't really shut the flow off. As for the solenoid I have found some new ones for about $20 shipped. Hopefully that can solve my problems.
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post #6 of 13 (permalink) Old 07-05-2013, 08:11 PM
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Quote:
Originally Posted by karatekid14 View Post
but what I find odd is that the shut off valve on the co2 tank doesn't really shut the flow off.
That's because there's still residual pressure after the valve. Untill it bleeds down, you will continue to see flow.

A very high pressure on one side, very low on the other, and a relatively low flow rate means you could see flow for quite a while after the source is shut off.

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It's CO2. See-Oh-Two. Not C02 (see-zero-two).
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post #7 of 13 (permalink) Old 07-06-2013, 01:29 AM
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^ Stitch is right, it all depends where you close the Co2. It doesn't stop right away because you close the cylinder or the solenoid, you will have pressure remaining until it bleed out.

What you want to look out for is the rate of flow. If you shut off your solenoid, the rate of flow slow decrease until it completely stops.



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post #8 of 13 (permalink) Old 08-29-2013, 04:12 AM Thread Starter
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Bump
New Question

After realizing my old solenoid was the point of failure I bought a new clippard EV-2M-24 VDC. I know it needs a 24v DC power adapter but I don't know what the solenoid's exact requirements are. I bought a 24vdc 350mA adapter and the solenoid didn't work. What exactly do I need?
Thanks!
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post #9 of 13 (permalink) Old 08-29-2013, 08:03 AM
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Quote:
Originally Posted by karatekid14 View Post
Bump
New Question

After realizing my old solenoid was the point of failure I bought a new clippard EV-2M-24 VDC. I know it needs a 24v DC power adapter but I don't know what the solenoid's exact requirements are. I bought a 24vdc 350mA adapter and the solenoid didn't work. What exactly do I need?
Thanks!
According to the specification sheet, the solenoid only draws 0.67 watts, so your adapter should be fine.

Are you sure you wired it correctly? How are you wiring it? If you are soldering, did you ensure that you have no cold joints? If you have a multimeter, I would suggest checking all your wiring.

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post #10 of 13 (permalink) Old 08-29-2013, 12:31 PM
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If you took the solenoid apart, you may also have put back together incorrectly.
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post #11 of 13 (permalink) Old 09-03-2013, 01:13 AM Thread Starter
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Oldpunk:
I bought a new solenoid, hence the new question, and I have not taken it apart. I do think that the reason the old one stopped working was because I took it apart.

Main Question: What exact Adapter do I need?

To check that the solenoid worked before soldering we attached the leads together with electrical tape and plugged it in. With my last solenoid you could hear a slight click when plugging it in, but this was silent. We tried attaching the other leads and it was still quiet. We then checked to see it power was even registering and it read zero. I think the adapter may be broken, but I don't want to buy the wrong thing again.

In the meantime I have been searching the internet for 24vdc power supplies, and it seems as though there are just as many bad reviews on them as good. Could someone direct me to a specific adapter please?

Thanks!
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post #12 of 13 (permalink) Old 09-03-2013, 05:54 AM
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I don't think anyone can recommend you a specific ACDC adapter; they all work on the same principle, and there are many different models out there.

Have you tested the two leads off of the 24VDC adapter to see if it is actually registering 24V?

Anthony

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post #13 of 13 (permalink) Old 09-03-2013, 03:25 PM
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If you got the same solenoid, the round part just screws into the manifold. You shouldn't need an adapter.
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