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Ultra Noob + Big Project

post #1 of 38
Thread Starter 
hi there people just wondering if anyone could offer me a little help.

I have never overclocked anything in my life, and i have never used anything other than a stock hsf.

Ok i managed to get hold of a rather large floor standing a/c unit from an office about 2 months ago and im not sure what direction to take. I would like to go for the ultimate of course and turn it into a phase change unit but i have a couple of problems.

1: i have never worked with any refrigerants of any kind
2: i have never done any plumbing of any kind

Now before you all laugh and say jesus what hope has this guy got who has no clue about overclocking, cooling or even plumbing, just remember im thinking that too lol. But i just need to find the answer to a couple of questions and i'll be off and having a go at recking my chip.

Anyway i was wondering:-

i have a complete system intact and filled with 560g of R22. To work on this sytem requires me to break the circuit thus releasing the contained refrigerant.

1: how can i safely release the refrigerant
2: how do i recharge the system. i know i can buy a vacuum pump but where can i get the r22? or can i go to some place and get the system refilled?

Im in the UK btw.

If anyone can help me out i would me hugely gratefull.

EDIT: ps how do i add pics into the middle of the thread rather than at the end as attachments?



post #2 of 38
well, you could always go the cheaper route and do a waterchiller. this is basically when you put the evaporator(the part that gets cold) into some sort of liquid(usually water with antifreeze). it is then pumped through a normal watercooling circuit. but if you were to empty the gas i would suggest just breaking off the copper tup that is entering the evaporator. i would also suggest that you do this outdoors even though i dont think that r22 is toxic. another thing is i wouldn't buy a vacuum pump as it is a peice of heavy industrial equipment and will probably cost around 500$US. i would say that you should take it to someone and get it professinally refilled. alot cheaper and most likely a better job will be done if it is your first time ever working with a refridgerant. anyway, this is jsut from the perspective of a 14 year old. hope this helped ya out.
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post #3 of 38
Thread Starter 
thanks for the reply i wanted to make a phase change unit so it would fit into a sytem case extension and would'nt be ugly. plus phase change is more effective. I think i need to find somewhere to refill the system when im done.
post #4 of 38
yes it is much more effective but i beleive that you would have to make yourself a waterblock. if you are looking into doing this go to www.onlinemetals.com unless you have somewhere near you where you can pick up some copper. also you would have to condensation proof your whole computer, there are some good topics about that on this site, just use the handy search tab
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post #5 of 38
You're going to need to get :-

1. Charging manifold and hoses
2. Vacuum Pump
3. New Drier

When you break into an A/C system you allow moisture in, this means you need a new Drier.

You're going to eiter need to make an Evap. or buy one.

If you're going to make one then you'll need a solid block of copper, about 55x55x10 should do, drill a series of holes to form a maze, at one end the liquid refrigerant will enter the block and at the other end the vapor refrigerant will exit the block.

If you want to buy one then just goto www.xtremesystems.org/forums/ and send Chilly1, Johann or Gray Mole a PM.

Just send me a PM if you need any further help. (You'll need to send it to a moderator and ask them to forward it to me)
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post #6 of 38
Thread Starter 
ok thanks all for your replies, i know pretty much everything i need to know at the moment i just dont want to break the system until i know that i can recharge it or get it refilled.

So to petrolhead please tell me more about charging manifolds (what is it lol), vacuum pumps(which ones are suited to the job?).

thanks demon-c
post #7 of 38
Here is a spec sheet for a Manifold.

This is what a charging manifold look's like



This is what the hoses look like




This is a Vacuum pump, this one could be used



Just ask if you have any more questions.
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post #8 of 38
Thread Starter 
awesome thasnks a lot m8 that is a huge help exactly the info i was looking for
post #9 of 38
i think you cant buy refrigerants without a license, depends where do you live.
Also, the best way is recover the gas ,otherwise you can have problems....

keep update.
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post #10 of 38
Hey DeMoM-C,

You`re going to need a manometer (vacuum gauge) to use with the vacuum pump, which reads in microns. This is the only way to tell if you have pulled an adequate vacuum on the system once you get that far. For the Freon-22 system that you`re using, the pump will need to pull a 400 micron vacuum, at which time you valve off the pump and see if the vacuum will hold for 5 minutes. Then, you purge the air from your manifold hoses with freon and charge the system with a charging cylinder which has the correct amount of refrigerant in it for your system. Your manifold needs to be hooked up in such a way before all of these operations so no air will be allowed to enter your system and the correct weight of refrigerant is released back into your system. This is a critical charge system and cannot be charged even an ounce more or less than specificied. That`s why you need to use a weight charging cylinder. If you`ve not done any HVAC/refrigeration work before, then you really need to get help from someone who knows about this. There are soldering techniques and other procedures that if not done correctly will lead to problems in the future. BTW, any freon refrigerant should NEVER be released anywhere (by law) except into a refrigerant recovery system. If not contaminated, the refrigerant can be put back into the system from which it was recovered. This means that you should find someone who has a recovery machine and an approved recovery drum to store it until it can be re-used or recycled. `Chances are that the right people won`t find out if you`ve let it out into the atmosphere, but if you ever get caught it`s a stiff fine (around here it`s 25 grand).
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