Something wrong with my pump? (Hydor L30)

[aBo]

I have been building my watercooling kit for a long time now (mainly because of limited budget), self-made blocks (#Rotor -style CPU, NB & GPU) etc and I bought an used Hydor L30 to go with it. Now that I have been doing my final leak test and such I discovered that the pump is surprisingly noisy and gets too hot for my liking (well, it might have something to do with me replacing the barbs with better flowing ones, but I somehow doubt it)... So here goes

pretty much the whole system (I have since changed the GPU top plate to copper one since all tries at polycarb top leaked)



The pump at its current state



and finally an extremely blurry pic of the GPU block with the new top being leaktested



the pump measured 42.1 degrees C (on top which felt hottest), the water (measured through the hose) 40.0C and the block 42.6C... those figures are way too high to my liking, what do you think? Is it normal for L30 to get so hot?


...sorry for this newbieshly post but I feel the need of reassurance right now

[AntiBling]

The pump will heat up the water somewhat. With the rad flat on the floor like that there is essentially no convective airflow through it to help it cool, much less active cooling. You didnt say how hot the room was, which makes it harder to evaluate the other temps. Have you tried NB and GPU blocks in parallel? That might help.

[aBo]

at the GPU leaktest I had no rad in the loop at all (as you can probably see if you squint enough ) but I felt that the temps shouldn't have been so high regardless... the ambient was something 24C :ish

*edit* the temps were taken during that GPU leaktest. I'm probably just paranoid and the single block isn't enough to dissipate the heat generated by pump but somehow it sounds... odd. Makes me wonder how huge heatload it will add @ 24/7 which is how I'm planning to run it.

[AntiBling]

I remember testing leak testing mine in the case before powering up the PC part. It reached 30 something C in a 25C ambient room. That was with the pump running but nothing else. Mine is a Mag 3, Maze GPU4, RBX with stock nozzle, and camaro heatercore. Try putting a fan on the rad and see how much airflow it takes to keep it near ambient with the pump only. If you cant get it to nearly ambient temp with just the pump as a heat source, you may have a problem.

[Demonfire]

Jesus, what coolant are you using, it looks like green jizz.

No wonder its so noisy!

[aBo]

...Actually the coolant is de-ionized water, greenish antifreeze and green ink from a highlighter. The antifreeze tends to cloud up and the low-end HP digital camera doesn't help .

I spent the last two days getting the system into my case and trying to make it work, had some issues with too short mounting hardware and probably it was also shorted somewhere because it just wouldn't boot up... Right now i'm running my old coolers outside the case (luckily it started working anyway). As soon as I get my lazy ass up from this chair, I'm going to reassemble all the crap to the case and this time use the plastic washers more liberally.



BTW, the pump temps seem to be quite OK when there's a heatercore (even passively) on the system, although the noise level is still fairly high for my taste.