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Thread: fridge pressures
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08-08-2008, 07:22 PM #1
fridge pressures
What pressure do you want on a Fridge (3 - 5 o) using R22.
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08-08-2008, 08:02 PM #2
Re: fridge pressures
Well you normally want it 6k lower than the temp for forced draught, so ~330kPa when it's down to the correct temp.
But if the coil is undersized and designed for high TDs like most brand commercial cabinets are, you don't have much to say about it, charge to superheat/sightglass/factory stated weight and ignore the pressure.
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09-08-2008, 01:01 AM #3
Re: fridge pressures
Ooo Ooo a game, I like playing games.
Ermmm lets see now what pressure do I want on a fridge?? Now then where is my piece of string? Oooh I need my string to see how long it is .
Only teasing.
Just look on your gauges and tell us what pressures you've got and we will take it from there.
taz.
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09-08-2008, 01:10 AM #4
Re: fridge pressures
Ps
Ian since 2005 you have asked 4 or 5 questions and not once did you contribute to the discussion or reply with feedback on how you got on.
Call me old fashioned and all but it does not hurt to show a small amount of appriciation if somone takes the time to help someone.
taz
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12-08-2008, 09:14 AM #5
Re: fridge pressures
My answer is....
wait for it.....
it's gonna be good...
12...and she said "give it to me you big fridgie"
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12-08-2008, 05:29 PM #6
Re: fridge pressures
Im sorry mate thats incorrect, it is in fact 13.
Hope this helps everyone.
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12-08-2008, 06:07 PM #7
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12-08-2008, 08:53 PM #8
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16-02-2009, 03:50 PM #9
Re: fridge pressures
i thought it was the dolphins
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16-02-2009, 08:23 PM #10
Re: fridge pressures
i would put get it running between 0 and 100 should be fine
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19-02-2009, 11:31 PM #11
Re: fridge pressures
no your all wrong, rule of charging anything, packs, ac ,integs etc, put loads in til it stops working then let some out, erm i mean reclaim, until it does!!!
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23-02-2009, 10:37 AM #12
Re: fridge pressures
I see well using this equation i get 2
p=a*exp(-x^2/2)+b*P(Z>x)
Sorry worked it wrong should be 42 damn computer got it wrong again!!!Last edited by HallsEngineer; 23-02-2009 at 10:38 AM. Reason: sorry calculation error
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