I have got together all the parts needed for a first watercooling setup.
I bought a Koolance reservoir/dual pump combo unit from a dead (control board had fried!!) Koolance PC2 case and would like to know what voltage the pumps contained in the res. run at. I am in the UK where the standard mains power is 220-240V AC.
I have connected 12v DC to the 2 wires (brown + blue) from the pumps and get one movement from the pumps then nothing so I am pretty sure they are AC but I need to know if the original control board from the PC2 case was supplying 240V AC (in which case it should be easy) or whether the control board supplied a lower AC voltage.
Any help will be much appreciated.
.... and yes I have e-mailed Koolance but have not had a reply yet!

Quote: Originally Posted by StuntMonkey I have got together all the parts needed for a first watercooling setup. I bought a Koolance reservoir/dual pump combo unit from a dead (control board had fried!!) Koolance PC2 case and would like to know what voltage the pumps contained in the res. run at. I am in the UK where the standard mains power is 220-240V AC. I have connected 12v DC to the 2 wires (brown + blue) from the pumps and get one movement from the pumps then nothing so I am pretty sure they are AC but I need to know if the original control board from the PC2 case was supplying 240V AC (in which case it should be easy) or whether the control board supplied a lower AC voltage. Any help will be much appreciated. .... and yes I have e-mailed Koolance but have not had a reply yet!

Koolance pumps are 12 volt DC. Either you are mixing up the + or - and wiring them backwards or you have dead pumps.

Holy G...
I can see it now...220Vt AC to a 12vt Koolance pump...

Can you say Major Head??

...thats what I assumed but apparently not.

I have found this however...... http://www.xbitlabs.com/articles/oth...ce-pc2c_7.html

Quote: Originally Posted by StuntMonkey ...thats what I assumed but apparently not. I have found this however...... http://www.xbitlabs.com/articles/oth...ce-pc2c_7.html

Good find...and poor design. My bad, I never dreamed Koolances pumps used an external inverter to make them 12 volt. That's gotta put a nasty load on the 12 volt rail.

I guess you could try for a replacement board from Koolance. Or you could just buy a real pump instead.

yep. Looks like a new pump (and reservoir) for me!

any recommendations please?

Quote: Originally Posted by StuntMonkey yep. Looks like a new pump (and reservoir) for me! any recommendations please?

I would likely splurge and get the Danger Den 12V pump. I trust Zennzzo's judgement .... and he speaks very highly of it.

Otherwise, go with Danner Magdrive, Eheim, or or Hydor. All are AC.

If you have lots of money ...... Iwaki are nice.

What is left from Koolance then? Just the rad? Or water blocks too?

Thanks.

The DD 12V looks quite impressive (small too) from what I have read so far!

The only thing I got from the old Koolance is the reservoir and pumps + the plexiglass bracket to mount it horizontally instead of vertically.

The Rad and fans were already gone and control board was dead anyway.
I got the CPU water block (ver 300) and the NB water block. I have just taken delivery of a Koolance GPU water block. I already had a Black Ice 120.1 Rad and fan.

So you are looking at a small diameter system to work with the Koolance 1/4" barbs?

That would be ideal. Something with 1/4 or 3/8" fittings.

FYI guys,

The official Koolance reply states that the pumps are 12V AC, and they do not recommend running them without their control board. (but they would say that wouldn't they!!?!).

Cheers.

StuntMonkey. What did you do to get the pumps to work???

I also had a Koolance Resv. with 2 little Pumps. And I wondered what Voltage is needed. Now I know:
220V is VERY BAD !!!! Pumps started to run for a few seconds, then: BANG. Lights off
So use a 220->110 Volt Convertor or a even lower Voltage.
Hope this helps you. My Pumps are dead now

Willi