Hi folks,
After my single stage practise unit i thought it was time to make something worthy to use With some luck i found a free and useable coolgroup. It had some nice components in it and all they needed was some refurb loving
Here are some pics to start with
The victim Trading old for new Made proces, paintjob
The compressor is a pretty strong Uniti hermetique CAE9460T.
I wil update this now and then while more has been done
My god the speed that your moving on with this!! Looks gash but a nice find untill i saw the paint job and looks new again. Keep up the amazing work. You've gotten the skills now and by the looks the eye for detial to go with it!
__________________ .:Melted's Hardware:.
.:My Workstation::Sorta Done:.
.:Intel E4300@3ghz(375*8):2gb G.Skill HZ 6400@500mhz:Sapphire X1950pro:Gigabyte GA-G33M-DS2R:550w FSP Blue Storm:80gb and 160gb WD SATA2:Cheap MATX Case:.
.:Panasonic Toughbook CF-T2:.
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I've been using Intel ever since AMD put an end to my socket A fun. I was almost going to go back when I saw the cheap AM2 chips, but they suck Viva La Chipzilla!
DSHC is fine. it'll stop the vibes and add a bit more cooling
__________________ .:Melted's Hardware:.
.:My Workstation::Sorta Done:.
.:Intel E4300@3ghz(375*8):2gb G.Skill HZ 6400@500mhz:Sapphire X1950pro:Gigabyte GA-G33M-DS2R:550w FSP Blue Storm:80gb and 160gb WD SATA2:Cheap MATX Case:.
.:Panasonic Toughbook CF-T2:.
.:Pentium M 753 (900mhz ULV):256MB:40GB:12.1" Touchscreen:. .:Not too shabby for a 2.4lbs of pwn:.
I've been using Intel ever since AMD put an end to my socket A fun. I was almost going to go back when I saw the cheap AM2 chips, but they suck Viva La Chipzilla!
DSHC is not necessary for a single-stage system. You only need 2 or 3 large loops to dampen the vibration from the compressor onto the condenser joint.
Also, your compressor will run either way you wired it but won't run for long if you have the start and run caps switched. What values of capacitor did you use for each winding?
DSHC is not necessary for a single-stage system. You only need 2 or 3 large loops to dampen the vibration from the compressor onto the condenser joint.
Also, your compressor will run either way you wired it but won't run for long if you have the start and run caps switched. What values of capacitor did you use for each winding?
I have connected it the right way now long live the manual
original capacitors btw
it seems that evap design is really important , while gassing the system and starting it, temps were dropping very very fast to -40, once the system was filled temps dropped back to a loazy -25°c within secs...i was scratching my head, how could this be possible???
-->evap
I made a custom test evap at work , but it has no canals and the capilair lays next to the suction line, in other words , it goes in and gets sucked away before it even makes change to evaporate lol.
Anyhow, a decent evap wil be made so we can test again.
Give us more details. What are you pressures when you have finished charging? It sounds like you don't have enough volume in the evaporators and the low side pressure is to high.
a little late update lol,
did some finalizing on the unit, insulated the evap added mounting plate S1366 only .
I really used some ghetto stuff for this, inox plate and housing from a standard motor, placed the evap in it, a little PU mousse and done deal :-)
Getting idle around -58°/-60 Working on load tester now . Already done some overkill testing with airheater wich produces 2000W or max 300°c
I've found that an airheater doesn't put much load on an evap. I'm guessing that air->copper transfer is poor, coupled with the layer of watery ice on the evap that acts as a good insulator.
Final tuning is better served on the actual CPU. Not to mention is looks cool having bottles and guages attached to the computer
So i had R410a charged, i recharged the system with R507, temps are temps at idle but when when loading it it completely fails 250W btw. I guess it's the 9feet .028 capilair that is holding me back.
Hmm sorry m8 but i'm noob, could you explain wich side and how to resolve, or how i should notice this?
I always charge untill a few inches of the compressor is not frozen and my low side at 0 bar .
Hook up your red hose to your high side the side coming "Out" of the condenser often located on the filter drier...
.
Hook up your blue hose to the low side often the service port on your compressor.
Whats your loaded pressure on the red hose gauge under load?
Also whats the temp of your suction line 2 to 4 inches up from your compressor under load?
If your pressure is above 225 psi and your not holding load then I would trim down to 8 feet and try again.
Hook up your red hose to your high side the side coming "Out" of the condenser often located on the filter drier...
.
Hook up your blue hose to the low side often the service port on your compressor.
Whats your loaded pressure on the red hose gauge under load?
Also whats the temp of your suction line 2 to 4 inches up from your compressor under load?
If your pressure is above 225 psi and your not holding load then I would trim down to 8 feet and try again.
Was going to test this but in idle my low side was in vaccum and my highside around 150psi, a bit undercharged so i didn't bother to put load on it.
i'm going to swap my custom evap and suction line with a prefab from piotres or duniek . .036capilair with 10feet to start with. I really need this system to hold 250w steady at -35°c if possible.
Was going to test this but in idle my low side was in vaccum and my highside around 150psi, a bit undercharged so i didn't bother to put load on it.
i'm going to swap my custom evap and suction line with a prefab from piotres or duniek . .036capilair with 10feet to start with. I really need this system to hold 250w steady at -35°c if possible.
Maybe if it's getting colder then you will have 250watt at -35, your compressor is not that strong
From your presures is clear that you didn't charge it with enought freon, also 9feet of .028 is too much for 250watt! According to Gary's forumula you need 5feet for 225watt. 5 feet is the minimum recommended so go for 6feet and try your luck. Or best wait for a custom lfex line/evap/ cap line from some1 with more experience.
Make yourself a variable dummy heat load.
I would keep in mind that the compressor doesn't performe like it was brand new.
Maybe if it's getting colder then you will have 250watt at -35, your compressor is not that strong
From your presures is clear that you didn't charge it with enought freon, also 9feet of .028 is too much for 250watt! According to Gary's forumula you need 5feet for 225watt. 5 feet is the minimum recommended so go for 6feet and try your luck. Or best wait for a custom lfex line/evap/ cap line from some1 with more experience.
Make yourself a variable dummy heat load.
I would keep in mind that the compressor doesn't performe like it was brand new.
my compressor is comparable with nl11f ,slighty stronger.
With some luck i found a free and useable coolgroup. It had some nice components in it and all they needed was some refurb loving
Viva La Chipzilla!
long live the manual 
Linear Mode
