Rudster816

johnksss

i have a question...how much r507 should be put into the compressor of a phase change?

http://www.xtremesystems..../forumdisplay.php?f=80

Assuming you have little, if any, experience in refrigeration, dont charge the unit yourself. Specially if the unit just underwent repairs.

Take it to a place that does HVAC, the only thing that separates it from a Air conditioner is the evap.

http://i175.photobucket.c...chmarks/23075SMALL.png

 


ok, so what is that link for? nothing directly linking to someone explaining this?
im at an ac company
and the specs for the compressor are in no way the same you use for regasing for phase.
example..your not going to use 14 oz which is what the chart says to use.


and i have been all over there looking for the simple answer. which doesn't seem to be an easy one to find.

johnksss

i have a question...how much r507 should be put into the compressor of a phase change?

you really need a set of compound gauges ,,a running cpu or appropriate load tester,and the knowhow to properly calculate subcooling/superheat

basically if you overcharge you'll have liquid slugging,that means that un evaporated liquid refrigerant enters the compressor and will eventually destroy it because liquids dont compress.

or youll be undercharged, which results in inconsitant cooling at load ,wild temp variations and an inability to hold a consistant temp at load ,it'll slowly creep up in temperature as time progresses while running..


its possible to charge without anything .
basically you add refrigerant in small amount to the low side ,and watch for frost to start forming on the evaperator/Cpu block.

if frost forms all the way up the suction line toward the compressor its overcharged.
I dont want to say more as it will get confusing ,and i'm not the best at explaining things ,im more of the hands on kinda person.

I hope this helped a little .

Rob

If I were you Id head over to XS forums and ask for help in the Phase cooling section...

nope...that's exactly the type of info i was looking for..it confirms what i already know and have been doing...so far the best we can get it to is -38...and it would seem r507 is rated about what...-40 to -45...so the part im not understanding is..where did vapochill get a -66 from???
since 507 is colder.

i talk to the owner and he said to add a high side as well...wish i would have did that when they did the low side...then it would be far easier than the add a tap of vapor then watch it, then turn it off and let sit for about 5 minutes so that it's in the positive and not a negative vacuum..let some out then turn it back on and watch what happens...very lengthy stuff here.


i tried getting help from phase builders...they seem to just want to do email.. and then that is a lengthy proccess..grrrrrrrrrrrrr.

going to see if i can catch sdumper.... runmc is working on his house so he takes a while to get back at times.

you are on the right track,

what are your low side and high side pressures at when running with a 100% cpu load ???

give e two minutes and ill let you know.

low =  -30
high +38 at 4.5ghz

but that was vantage... going to try linx

Anyone preorder a Fermi yet? I can't. I'ma wait till the end of April or so to get one.

johnksss

low =  -30
high +38 at 4.5ghz

but that was vantage... going to try linx

Are those temps or PSI? Either way those seem off.

Make a post in the XS Phase section, sdumper will probably give you some insight, he posts there often.

Most epic picture taken today. That's me on the right, my boy Daniel on the left. This was right after a 400 free relay, so I was like dead when my friend took this on her phone..

No ,not cpu temps ,...Pressure.

what is ...
High side (captube side) pressure in Psi

Lowside  (suction line) pressure in Psi

when running cpu at load .