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Offlinewiggum
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Registered: 03/28/14
Posts: 40
Last seen: 8 years, 6 months
PC can't get up to pressure
    #21975730 - 07/21/15 01:51 PM (8 years, 6 months ago)

It's a 23 quart Presto cooker. There's no visible leaks that I can see, yet this bitch wont get past 7 PSI without me holding the weight down, which is apparently a bad thing.

Gauge is wrong? I thought this was most likely since the weight is meant to determine pressure, right? Give a fuck about a gauge etc? Well my grain jars contaminated, so presumably something is faulty, but I've no idea what since it looks fine, no cracks or leaks etc.

Has anyone had this issue?

Would it be a bad idea to add weight to the gauge? The worst that'll happen is the rubber bung will blow out, right?


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InvisibleBuck513
Registered: 04/17/14
Posts: 5,682
Re: PC can't get up to pressure [Re: wiggum]
    #21975766 - 07/21/15 02:01 PM (8 years, 6 months ago)

Did you read your instructions manual once, twice, three times?

For some reason I get the suspicion that the PC isn't your problem.


--------------------
Fail to plan and you plan to fail.

Enter the Ban Lottery


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OfflineSyntheticwords
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Registered: 08/13/11
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Re: PC can't get up to pressure [Re: Buck513]
    #21975775 - 07/21/15 02:03 PM (8 years, 6 months ago)

You shouldn't have to hold the weight to reach pressure...


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InvisibleT-Funkadelic
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Re: PC can't get up to pressure [Re: Syntheticwords]
    #21975793 - 07/21/15 02:10 PM (8 years, 6 months ago)

Your weight or steam vent may be damaged. Is it releasing pressure constantly?


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InvisibleBill_Oreilly
ANIMALS (the RAINBOW SERPENT)


Registered: 11/12/11
Posts: 26,370
Loc: Boston
Re: PC can't get up to pressure [Re: T-Funkadelic]
    #21975828 - 07/21/15 02:22 PM (8 years, 6 months ago)

OP you are probably using too much water.


--------------------
Something there is mysteriously formed,
Existing before Heaven and Earth,
Silent, still, standing alone, unchanging,
All-pervading, unfailing,
I do not know its name; I call it tao.
If forced to give it a name, I call it
Great (ta). Being great, it flows out;
Flowing out means far-reaching;
Being far-reaching, it is said to return.


It's just a shot away..


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Offlinewiggum
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Last seen: 8 years, 6 months
Re: PC can't get up to pressure [Re: wiggum]
    #21975913 - 07/21/15 02:45 PM (8 years, 6 months ago)

The water level doesn't change the outcome. I've tried a cup, I've tried 3 quarts.

I would assume it was working fine if the gauge didn't say 7PSI when the weight started rocking, and if my grain jar test hadn't failed.


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Offlinewiggum
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Registered: 03/28/14
Posts: 40
Last seen: 8 years, 6 months
Re: PC can't get up to pressure [Re: wiggum]
    #21975950 - 07/21/15 02:56 PM (8 years, 6 months ago)

I talked to Presto about it and they're saying it's probably the gauge which is faulty... I'll have to run some more grain jar tests.


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Offlineblackout
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Re: PC can't get up to pressure [Re: wiggum]
    #21976039 - 07/21/15 03:14 PM (8 years, 6 months ago)

How big were the jars and how long did you cook? did you keep any uninoculated jars which will rule out contams from your inoculant.


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Offlinewiggum
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Posts: 40
Last seen: 8 years, 6 months
Re: PC can't get up to pressure [Re: blackout]
    #21976056 - 07/21/15 03:16 PM (8 years, 6 months ago)

7 jars, 1 layer, for 1 hour 30 minutes. they were all left uninoculated.

blackout, I saw some of your fractional sterilization posts when looking for a silver lining in this cloud. Did you ever get a tek down?


Edited by wiggum (07/21/15 03:17 PM)


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Offlineblackout
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Re: PC can't get up to pressure [Re: wiggum]
    #21976092 - 07/21/15 03:25 PM (8 years, 6 months ago)

Quote:

wiggum said:
Did you ever get a tek down?



I never wrote a tek, I have done it many times, in different manners with good success, I had a thread discussing what was required http://www.shroomery.org/forums/showflat.php/Number/21174437.

I can't recall ever seeing somebody actually doing tyndallization/fractional sterilization as instructed by John Tyndall. I just see loads of people doing it there own way and saying they had failures, exactly what Tyndall predicted, just proving him right, not wrong.

There is no need for you to do it, as your PC sounds fine to me. Could you get a loan of a second gauge, maybe buy a new PC in a shop and return it after you confirm its the gauge.


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Invisiblejesuisravi
The Old Noob
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Registered: 06/24/15
Posts: 260
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Re: PC can't get up to pressure [Re: wiggum]
    #21977615 - 07/21/15 09:06 PM (8 years, 6 months ago)

What kind of heat source are you using. I use a hot plate and when I put a large cooker--23 quart is large--on, I don't get good pressure. Big cooker needs good heat source.


--------------------
Most of my beliefs I acquired from my father and from John Wayne, and anything that wasn't ultra tough and ultra cool was to me ultra embarrassing. In fact, I lived in a state of near continuous embarrassment, never measuring up to the ridiculous standards I had accepted without question, applied to a framework of expectations neither I nor anyone else could meet.--J C Amberchele

almost nothing important that ever happens to you happens because you engineer it. Destiny has no beeper; destiny always leans trenchcoated out of an alley with some sort of 'psst' that you usually can't even hear because you're in such a rush to or from something important you've tried to engineer. ”
― David Foster Wallace, Infinite Jest


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InvisibleBuck513
Registered: 04/17/14
Posts: 5,682
Re: PC can't get up to pressure [Re: jesuisravi]
    #21977773 - 07/21/15 09:40 PM (8 years, 6 months ago)

23 quart isn't large.

And if its a presto you're using a hot plate with, I'd be careful because the bottom could warp.


--------------------
Fail to plan and you plan to fail.

Enter the Ban Lottery


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Offlineinvitro

Registered: 05/03/13
Posts: 2,529
Last seen: 1 month, 21 days
Re: PC can't get up to pressure [Re: Buck513]
    #21977927 - 07/21/15 10:15 PM (8 years, 6 months ago)

Sometimes the leak can be small and hard to detect visually.  You might put your ear up the the lid and go around in a circle.  I know this sounds like stupid advice but I've run into this issue more than once and listening for that tiny hiss solved the problem when nothing else seemed out of whack.


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OfflineDjchrist
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Registered: 06/06/11
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Re: PC can't get up to pressure [Re: invitro]
    #21979128 - 07/22/15 06:39 AM (8 years, 6 months ago)

The Gauge is faulty, if the weight starts rocking it hit 15 psi and you're good in my experience the weight is more accurate than the gauge.


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Invisiblejesuisravi
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Re: PC can't get up to pressure [Re: Buck513]
    #21979368 - 07/22/15 08:25 AM (8 years, 6 months ago)

Quote:

Buck513 said:
23 quart isn't large.

And if its a presto you're using a hot plate with, I'd be careful because the bottom could warp.




Large is relative.

I have not run into the bottom warp problem yet. I am using a new Presto 8 quart. Tall and narrow. Has not failed me yet, but not much room in there for more than 3 quart jars at one time. But, hey, I am not growing for an army. I am content with it. I know that some people like big yields for reasons other than distribution. They want to experiment with extraction or cloning or whatever.


--------------------
Most of my beliefs I acquired from my father and from John Wayne, and anything that wasn't ultra tough and ultra cool was to me ultra embarrassing. In fact, I lived in a state of near continuous embarrassment, never measuring up to the ridiculous standards I had accepted without question, applied to a framework of expectations neither I nor anyone else could meet.--J C Amberchele

almost nothing important that ever happens to you happens because you engineer it. Destiny has no beeper; destiny always leans trenchcoated out of an alley with some sort of 'psst' that you usually can't even hear because you're in such a rush to or from something important you've tried to engineer. ”
― David Foster Wallace, Infinite Jest


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InvisibleInocuole
Scalpel of Evil's Bane
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Re: PC can't get up to pressure [Re: jesuisravi]
    #21979378 - 07/22/15 08:27 AM (8 years, 6 months ago)

The pressure cooker doesn't affect your yield.  It affects how long you sit around with your thumb up your ass for x amount of jars.


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                            :rainbowdrink: Tea doesn't work?                            AMU  (Q & A)                  Grain prep for Intergalactic Space Oats :pes:     

Coir-ca-cola
Jokes are funny until they're about you


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Offlinespacechildo
proletarians rise up
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Re: PC can't get up to pressure [Re: Inocuole]
    #21979575 - 07/22/15 09:23 AM (8 years, 6 months ago)

heh, I usually smoke a couple fat ones while waiting for my PC runs,
but diffrent strokes I guess :tongue2:


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InvisibleInocuole
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Re: PC can't get up to pressure [Re: spacechildo]
    #21979628 - 07/22/15 09:41 AM (8 years, 6 months ago)

Well, totally, but if you had to do 4x more runs because your PC was tiny, you might run out of fat ones.


--------------------
                            :rainbowdrink: Tea doesn't work?                            AMU  (Q & A)                  Grain prep for Intergalactic Space Oats :pes:     

Coir-ca-cola
Jokes are funny until they're about you


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InvisibleMikeBearPig
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Registered: 07/15/14
Posts: 2,319
Re: PC can't get up to pressure [Re: Inocuole]
    #21979639 - 07/22/15 09:45 AM (8 years, 6 months ago)

Quote:

Inocuole said:
Well, totally, but if you had to do 4x more runs because your PC was tiny, you might run out of fat ones.




It's trueeee


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Offlinespacechildo
proletarians rise up
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Re: PC can't get up to pressure [Re: Inocuole]
    #21979681 - 07/22/15 09:58 AM (8 years, 6 months ago)

Quote:

Inocuole said:
Well, totally, but if you had to do 4x more runs because your PC was tiny, you might run out of fat ones.




buy more fat ones! :cookiemonster:


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InvisibleInocuole
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Re: PC can't get up to pressure [Re: spacechildo]
    #21979754 - 07/22/15 10:18 AM (8 years, 6 months ago)

We're talking about a vicious cycle of fat ones that could be nipped (wait for it) in the bud by making a small investment.


--------------------
                            :rainbowdrink: Tea doesn't work?                            AMU  (Q & A)                  Grain prep for Intergalactic Space Oats :pes:     

Coir-ca-cola
Jokes are funny until they're about you


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