Regulator gauge maxed out
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Old 02-20-2013, 12:33 AM   #1
roland6543
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Regulator gauge maxed out


I got a used regulator and connected it to my cylinder. After opening the cylinder valve I noticed the outlet gauge was reading way over max - it looks like it has 'jumped' the post that it usually rests against at zero pressure. If I gently turn the regulator knob, the gauge needle responds slightly clockwise until it hits the post, then stops. If I adjust the needle valve I can achieve a couple of bubbles per second. I'm curious why the gauge needle is in the wrong place. Is the regulator shot, or can I fix it?

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Old 02-20-2013, 12:52 AM   #2
Darkblade48
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If this is a low pressure gauge you are talking about, it is possible that it was damaged due to improper operation. Before opening the CO2 cylinder, care must be taken to back off the delivery pressure to prevent the low pressure gauge's needle from being damaged (i.e. the needle goes around).

However, even if it is damaged, it will not inhibit the operation of the regulator; you will just be unable to determine the delivery pressure.
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Old 02-20-2013, 01:50 AM   #3
roland6543
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Default Re: Regulator gauge maxed out

So are there any "watch outs" using a regulator with a faulty lp gauge? Some say to set it at 11 psi. Why 11, and what happens at 5 or 25?

If I'm running blind can you suggest a procedural guideline e.g. open the needle valve, turn regulator knob 1/2 turn, reduce needle valve to desired BPM? Or something along those lines?

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Old 02-20-2013, 02:21 AM   #4
koiboi
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I ignore that reading, in fact I have no idea what it is and I just put a freshly filled cylinder on about ten minutes ago. It's Whatever BPS that keeps your drop checker "plant tank green" that matters.
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Old 02-20-2013, 02:22 AM   #5
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Are you having an issue with the regulator maxing out all by itself after you set a desired psi or is it always reading maxed out no matter what?

Edit - I finished reading the firast post...

You can usually take the gauge apart and reset the needle to zero. (You don't really have anything to loose by trying this - the gauge is already messed up..)
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Old 02-20-2013, 03:33 AM   #6
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Quote:
Originally Posted by roland6543 View Post
So are there any "watch outs" using a regulator with a faulty lp gauge? Some say to set it at 11 psi. Why 11, and what happens at 5 or 25?
You can set it at whatever pressure you want, as long as the regulator can handle it. Anywhere from 5 - 40 PSI is the norm.

Quote:
Originally Posted by roland6543 View Post
If I'm running blind can you suggest a procedural guideline e.g. open the needle valve, turn regulator knob 1/2 turn, reduce needle valve to desired BPM? Or something along those lines?

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Please take a look at my guide to pressurized CO2, linked in my signature. There is a step by step, illustrated guide.

Quote:
Originally Posted by koiboi View Post
I ignore that reading, in fact I have no idea what it is and I just put a freshly filled cylinder on about ten minutes ago.
It is not advisable to start tuning your CO2 flow rate immediately (within 24 hours) after it is filled. As the CO2 is still very cold, it could lead to fluctuations in flow rate as it warms up.
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Old 02-20-2013, 04:08 AM   #7
roland6543
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Default Re: Regulator gauge maxed out

Thanks for the helpful comments. Especially your guide dark blade.

I'll be following this guide tomorrow.

If you think of anything else to add, please post.

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