co2 knob is closed but still producing gas ?
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Old 03-30-2013, 05:48 PM   #1
youdontknowme
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co2 knob is closed but still producing gas ?


my solenoid is faulty. The valve in the solenoid will not close properly thus allowing some gas to pass through. :mad2:

So I turned the metal knob to " CLOSE " direction on the top of CO2 cylinder tank , but i can still see bubbles producing in the bubble counter even after an hour ! solenoid is offed :flame:

its like 1 bubbles / 8 second ops:

what went wrong ?

Last edited by youdontknowme; 03-30-2013 at 06:14 PM.. Reason: update
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Old 03-30-2013, 06:44 PM   #2
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Even after you close the main CO2 cylinder valve, there will still be gas in the regulator (unless you have also backed off the regulator knob all the way).

Did you back off the CO2 regulator delivery pressure adjustment knob?
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Old 03-31-2013, 02:28 AM   #3
youdontknowme
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I know there will be some gas left in the regulator even after closing the main knob. But the problem is even 10hours later its still producing bubbles. And when i on the solenoid, its like the main knob is not close at all
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Old 03-31-2013, 03:15 AM   #4
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Quote:
Originally Posted by youdontknowme View Post
I know there will be some gas left in the regulator even after closing the main knob. But the problem is even 10hours later its still producing bubbles. And when i on the solenoid, its like the main knob is not close at all
Again, did you back off the pressure on your regulator?

Even if you close the CO2 cylinder valve, if you do not back off the regulator pressure, the remaining gas within the regulator will still continue to escape. This is normally prevented by the solenoid, but since you also have a leaking solenoid, the gas will continue to flow.

The first thing to determine is whether or not gas stops flowing when you back off the regulator knob. This will at least show that your regulator is still functioning properly.

Next, you will need to clean the solenoid of any debris that may be blocking the plunger from closing all the way.
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Old 03-31-2013, 04:56 AM   #5
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well i didn't . I thought the remaining gas will run out after 12 over hours .
right , will clean the solenoid of any debris and see how it goes.
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Old 03-31-2013, 07:53 AM   #6
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Even after closing the main CO2 valve, you will still have ~800 PSI of pressure in the regulator. If you do not back off the delivery pressure knob, gas will continue to flow (but will be stopped by the solenoid under normal circumstances).

Since your solenoid is leaking (just slightly), you will get a minute amount of flow, and this may or may not disappear even after 12 hours.

What are your high and low pressure gauges reading after 12 hours?
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Old 03-31-2013, 01:27 PM   #7
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i see.

well , my 5 Litre tank is going to be empty right now.

yesterday it was 800 psi and 40 psi. now its 300 psi and 35 psi. running at 1.5bps .
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Old 03-31-2013, 02:00 PM   #8
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Default co2 knob is closed but still producing gas ?

Thats a major leakage! Test it with soapy water.
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Old 03-31-2013, 03:04 PM   #9
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did it twice. can't find any leak .. getting the regulator with solenoid replace ( warranty ) and 1 to 1 exchange for a refill of the cylinder and see how it goes again

*update * : its 0 psi now and still producing gas. i can set it from 1bps to any bps i want. i guess the meter is faulty too lol -.- Furthermore the cylinder weighs 12 KG

Last edited by youdontknowme; 03-31-2013 at 03:09 PM.. Reason: update
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Old 03-31-2013, 07:06 PM   #10
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Quote:
Originally Posted by youdontknowme View Post
i see.

well , my 5 Litre tank is going to be empty right now.

yesterday it was 800 psi and 40 psi. now its 300 psi and 35 psi. running at 1.5bps .
Didn't you say you closed the main CO2 cylinder valve? It would be normal to see the pressure eventually decrease to zero.

Quote:
Originally Posted by youdontknowme View Post
did it twice. can't find any leak .. getting the regulator with solenoid replace ( warranty ) and 1 to 1 exchange for a refill of the cylinder and see how it goes again

*update * : its 0 psi now and still producing gas. i can set it from 1bps to any bps i want. i guess the meter is faulty too lol -.- Furthermore the cylinder weighs 12 KG
Check again for leaks while you are at it.

If this is a new regulator (or even if it is used), it is unlikely that the regulator (diaphragm) itself is defective.
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Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
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Old 04-01-2013, 11:45 AM   #11
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Quote:
Originally Posted by Darkblade48 View Post
Didn't you say you closed the main CO2 cylinder valve? It would be normal to see the pressure eventually decrease to zero.


Check again for leaks while you are at it.

If this is a new regulator (or even if it is used), it is unlikely that the regulator (diaphragm) itself is defective.
its a new regulator. It is really defective ... searched another forum and someone has this similar problem as me. His meter gauge blows
100% no leak. hooked up another regulator and its at 1000 psi
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Old 04-01-2013, 07:51 PM   #12
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Well, when the brand new regulator was shipped, unless it was already defective, would not normally have a blown gauge.

Blown gauges are usually due to user error.

However, if you believe you have already tested your other regulator. and believe it to be faulty, then it is time to replace it.
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A Primer to Pressurized CO2 and A Primer to Planted Tanks
Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
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Old 04-04-2013, 02:45 PM   #13
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its already defective from the start (:
returned it to the agent , and he tested it , the high pressure meter shows 300 psi and the solenoid is leaking too. Then he replaced me a new regulator , and try it on , this time it shows 900 psi.

My tank is full as i assume. 1000 psi (: working perfectly right now.
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