Tips for low hassle watercooling

Soldato
Joined
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England
Hello all. I'm in the process of pulling my loop apart to clean the algae out and have discovered it's very difficult to drain, as it's not been very sensibly laid out. It was also difficult to fill, had a radiator with air in for the life of the install, and made moving components around borderline impossible. I've put together a few thoughts on this, but I'd like to learn from some other peoples mistakes as well as from my own for a change.

So, what advice can the community offer on how best to lay out a watercooling system?

1/ Using a reservoir makes filling a lot easier, especially if you run a length of tubing to the fill port, wind this tubing outside the case, and use a funnel. A t line works the same, but you have to top it up more, and a t line and reservoir less loop is far more hassle than its worth (some of you may remember my first thread asking about watercooling where I was convinced a sealed loop was the way to go. While higher performance, the effort involved is excessive).

2/ Compression fittings are more difficult than they look. Suggest the following strategy for fitting them. Fit barbs to components without nuts, then cut tubing the length based on these. Then take the barbs out and fit them to the ends of the tubing using spanners. Screw one end into a component, then twist the tubing up by three to five revolutions (based on the thread length of the barb), fit into the other component, and let the tubing untwist as it bites into the second component. Tighten up a bit and all is well.

3/ Air collects at the highest point. In my case, this was a radiator. Ideally have a reservoir or T line at the highest point to deal with this. Any vertical radiators should have the barbs at the top to prevent this. Draining water is more difficult than expected. You want the drain line at the lowest point, and any vertical radiators to have the barbs at the bottom. It's useful for the drain line to be a short distance after the pump, so you can use the pump to empty the reservoir if it doesn't empty itself.

4/ Algae does grow if you forget to use biocidal things and leave it exposed to sunlight. This doesn't seem to matter. Dye (in things like feser one) comes out of solution and turns up in cpu blocks, leading to distress. As such water with something that kills bacteria is much lower effort than dye. Coloured tubing is the way forward.

Paraphrased and abridged from shadowscotland, his original post is [post=15895168]here[/post]. Thanks for your contribution mate.

5/ Barbs are easier to install than compression fittings and will allow you to use any block, compressions can be too wide at the base to fit some waterblocks. Tubing is measured by inner diameter when only one value is given, barbs by outer diameter as the tubing fits over the barb. If using barbs, 7/16" (ID) tubing over 1/2" barbs is a popular choice and tight fit, you can heat up tubing end in hot water to help assembly. If using compression fittings, which are probably more reliable, you must match the tube size to the fitting exactly, 11/8mm tubing requires an 11/8mm compression fitting.

6/ It is important to decide why you want to watercool before starting, as this will dictate which components you want and whether, like most people, you'd be happier with air cooling. Air is easier than water after all. If you've come up with a convincing reason to spend/invest eighty to many hundreds of pounds, then it's best to read lots before you buy. Asking a forum a specific question based upon reading and trying the search button will yeild useful results, but "spec me watercooling plz" generally wont.

7/ Second hand watercooling is likely to increase hassle, especially if buying acrylic (clear) parts as they are vulnerable to prior misuse. They crack under torque or when alcohol is nearby. Second hand radiators and acetal (black) blocks are likely to be indistinguishable from new and an excellent idea. I'd go slightly further than SS and say avoid acrylic altogether.

8/ Shiny does not imply best (see acrylic), the best is dependent on why you are watercooling. Watercooling generally only means quieter if you have fewer, lower rpm fans than when using air cooling, and that silent watercooling is every bit as difficult as silent air cooling is.

Courtesy of Bubo, advice on draining a loop [post=15898008]here[/post].

9a/ If you're having trouble draining a loop and need to take a partially drained tube off a barb prior to rotating the case, you can temporarily block the open end of tube with a battery of the appropriate size. You can also buy dedicated plugs for this purpose. Once you have blocked one end off, you can attach a long length of tube to the now free barb and trail this out of the case and have fun turning the case around the get water out of this now free barb.

9b/ Also note it is much easier to drain a system if air can get in at some point to replace the water leaving. When using a drain valve as the only means of draining it will be a slow process as air has to get in through the same valve. If your rad has a bleed screw, rotate the case so this is the highest point, then open this screw, air will rush in through this screw when you open the drain valve. Alternatively, depending on your style of res you can do the same using the res fill port. You can use the long length of tube trick here as well so that you "extend" the fillport to keep it as the highest point as you rotate the case to get the water out.


That's all I've got so far, I'm really hoping people can add to it, I'll add to the op as required. By low hassle I mean the thing bleeding nicely, draining nicely, not leaking, and preferably allowing access to the things in the case.

Thanks to shadowscotland, Bubo
 
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:D well, can you comment my thread – about first time filling system – or I was make something stupid with my water cooling setup.
1 x Swiftech Apogee XT Extreme Performance 775/1156/1366
1 x EK Water Blocks EK-CoolStream RAD XT 360
1 x Laing DDC-Pump 12V DDC-1RT/Plus with 2xG1/4-outer thread
That is main components – that will be enough for average water cooling of CPU and in future GPU ?
Thanks
 
@JonJ - more to add to your list. In no real order

Watercool doesn't mean a quieter system - unless it's designed for low/no rpm fans.

ALWAYS use the right tube with compression fitting.

Barbs are easier and will allow you to use all blocks.
(compression fitting especially 1/2 ones are wide at the base)

Air cooling is 90% of the time a better choice.

sealed loops ARE better but a lot more hassle.

The ek multi option res if used the right way round should NOT be full.

Read lots before you buy

Asking a forum a specific questions will give better answers.

Secondhand metal/pom parts are fine - try and avoid second hand acyrlic.

Your hardware selection should be related to WHY you are watercooling.
WHY = blocks, rad & fans. Rad(s) = case. loop = pump/res

Shinny does not equal best - best is dependant on WHY

@Ferg - The first answer you need to tell us is WHY are you willing to spend £200 for 5c
I'm not trying to be funny, as I've spent well over that and have stock cooler temps - it's all about the why.
 
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@Ferg - The first answer you need to tell us is WHY are you willing to spend £200 for 5c
I'm not trying to be funny, as I've spent well over that and have stock cooler temps - it's all about the why.

Sorry, not really understood ( my English is not good enough for that probably ) only reason that I building PC with water cooling is because I have plans overclock my i7 CPU to 4Ghz+, and best cooling for keep average temperatures is water – anyway, that what I think. :confused:
 
Re: the tips about twisting tube and compression fittings.

I'm planning on replacing my barbs with compression fittings in the near future and I've seen you mention problems with tube twisting before. Is the problem you were having to do with the actual tightening of the outer fitting causing the tube to twist as it grips? If so I was thinking could this also be reduced by smearing some lubricant around the outside of the tube so that the outer fitting finds it easier to slip as you turn when it starts to bite? Afterall its function is the apply axial compression only, not circumferential force. I'm thinking vaseline.

Edit: Additional tip for the list. If you're having trouble draining a loop and need to take a partially drained tube off a barb prior to rotating the case, you can temporaily block the open end of tube with a battery of the appropriate size. You can also buy dedicated plugs for this purpose. Once you have blocked one end off, you can attach a long length of tube to the now free barb and trail this out of the case and have fun turning the case around the get water out of this now free barb.

Also note it is much easier to drain a system if air can get in at some point to replace the water leaving. When using a drain valve as the only means of draining it will be a slow process as air has to get in through the same valve. If your rad has a bleed screw, rotate the case so this is the highest point, then open this screw, air will rush in through this screw when you open the drain valve. Alternatively, depending on your style of res you can do the same using the res fill port. You can use the long length of tube trick here as well so that you "extend" the fillport to keep it as the highest point as you rotate the case to get the water out.
 
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Good points bubo - I use a fill port linked to my res for an air intake when draining, as well as filling, works a treat.

some of this stuff is in the sticky - and more of it is in other forum stickys - always worth read stuff from lots of sources (only problem is filtering out the OLD stuff and the hype)

@JonJ - very nicely worded

@Ferg - you can get a i7 to 4Ghz on air - if you plan on having all cores at load 24/7 water makes some sence.
if you mainly game - some encoding/office/web then no point - you'll be using 2 core most of the time, Air will be fine
 
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@Bubo where the twisting occurs depends on the order in which you install things. If the barbs are screwed into blocks, tubing fitted across them with nuts slid up either end of the tube then tightened it's the nuts biting into the tube and dragging it around with them which causes twist. Lubricant may actually be a brilliant idea here, I agree with your reasoning. I'll test this later today and get back to you. If you follow my advice instead, and fit the compression fittings to the tubing first, then it twists up as you screw the second fitting in place.

@SS Cheers. A lot of this will indeed be in stickies, I daresay a lot of it I've picked up online. The idea here was to sort out the points which are unrelated to performance, accumulating a list of ways of making watercooling easier. It's often rejected on the grounds of difficulty which is a shame as it has so much more flexibility than air. Plus I'd quite like to set mine up such that maintanence is possible without stripping the entire thing apart, I currently can't even take my psu out without removing all the watercooling paraphernalia.
 
Another tip. Avoid Feser one like the plague!! Poor cooling and it clogs your blocks/pump/radiator with gunk. Distilled/de-ionised water with something like Zerex is best.
 
For 'best' loop performance from res aka a compensating reservoir:

If fitting it vertically (as stoc images) with the single inlet/fill line at the top
and three in/outlets in the base - it should not be filled.

upside down - three in top one in bases - should be fully filled,
or as large as case allow with as much coolant as possible

horizontal (in line) should be full using end ports for in and out - side for drain and fill.
 
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