help with fan wiring

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2 Feb 2012
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plz help no one seems to be able to.....


i have just bought 2 Acoustifan 120 mm fans with the 3 speed cable fitting

http://www.acoustiproducts.com/en/acoustifan_dustproof.asp


i want to use them in the setup below can you tell me how to wire them into my modded water cooling system to do what is required.

i will explain what i am trying to do then the problem i have with wiring the fans.

at present i use 2 x Thermaltake Aquarius 111 water cooling units, yes i know they are old hat now (discontinued years ago) but i like the idea of the control interface and the look of it ..



i am trying to modify one but still use the control and monitoring side of things as the pump has finally given up the ghost and have decided to upgrade the whole setup to half inch tubing in a large bore set up
so to enable me to do this i have replaced the combined water tank pump with those shown below and also removed the old fan and rad which i am replacing with a 2 x 120 rad and fans mounted externally from the control unit.



the fan originally was this below, hopefully u can see from the pic it has 5 cables 3 x yellow one red one black

the red and black went to a 4 pin Molex for power.
the single yellow lead goes to one of the normal 3 pin fan header connections (effectively single yellow to blue on the 3 pin fan header)
the twin yellow 2 pin plug goes to a red and black lead from the rotary speed controller on the front panel



as this fan is now woefully inadequate i need 2 x 120 mm fans that r both efficient and quiet hence the purchase of the 2 Acoustifan.

so the question is

How do i wire new 3 pin fans(what ever would be best or are there 4 or 5 pin fans available that would do the job) into the system to still give me adjustable fan speed using the front plate control, and speed readouts on the front panel,

basically doing what it does now but with my new fans as i cant seem to find fans with the same 5 cables.?

if some kind person who knows what they are doing can tell my if i need to splice cables and in what order to what as in red to red yellow to yellow to and from ..... in a nice simple fashion would be great .
I've explained it the best i can so hopefully someone's has a better idea than me as I'm stuck ...

thx again in advance

Colin
 
Daisy chain the reds and blacks together and connect these to the fan speed controller, then the yellow wire on the new fans is what gives you the speed readout, you will only need to use this from one of the fans due to the fact that the power is daisy chained together so they should both be running at the same speed.

Hope that makes sense.
 
thx going to try over the weekend with the unit and an old psu and see if it works once that is done im up and running with a new cooling set up fingers xssed will feed back when ive tried it
 
ok so i have daisy chained them together by pinning a spare psu as such


connected the unit to the old TT unit



fans run ok at full speed on the rotary control but not when i wind it back they stop




so what i have in effect is all working at full speed but cant wind the fans back to slow speed without them shutting down completly

would i be better using pwm fans for this? i mean would they allow full control of speed wired in the same way ?

thx again
colin
 
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