Articles: Cooling

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Pump and Water Block

There are two fittings coming out of the radiator with tubes in spiral cords pressed tightly against them. These cords prevent the tubes from bending during installation and use. The other ends of these tubes to into the pump and water block unit measuring 72x72x56 mm:


The water block base is already covered with a layer of highly efficient (according to the manufacturer) thermal interface based on aluminum oxide:


The base is very even and the smeared imprint results from the fact that during installation and removal of the water block you have to turn it. But we are going to dwell on it a little later. Right now let’s check out the finish quality of the water block base:

It is polished quite OK, although those who love mirror-shining surfaces will hardly be pleased this time. Therefore, some may want to polish it off themselves.

The water block and pump are originally made by Asetek, as you can clearly see from the company name and logo on the side of the pump:

“LCLC” abbreviation stands for “Low Cost Liquid Cooling”. There are a few cooling solutions manufacturers out there who use this platform already. Its specifications are described in detail on the official web-page.

After opening up the water block I saw that it consisted of four parts: plastic lid, the actual pump, plastic base with two fittings of different diameter and copper base plate (of the water block):


Of course, once you open up the water block you disturb the leaktightness of the system. However, if you act cautiously, do not drain the coolant (hold the system vertically) and have extra 40-50 ml of distilled water handy, then you should have no problems. In return you will be able to enjoy the beauty of the water block internal structure:

In fact, its design is fairly simple, as it consists of a copper base with micro-channel ribbed structure covered with some material, which looked like cloth (must be some sort of plastic):

It operates in a very simple manner: coolant is being pumped in on one side and pushed out on the other. There are special sealing rubber rings between the water block, plastic cover and the main pump block. These rings prevent any coolant leakages. The coolant consists of distilled water with anticorrosion additive (propylene glycol).

You can see the magnetic motor coil and controller circuit board on one of the sides of the block:


The pump is powered from a 12 V three-pin mainboard connector and consumes maximum 2.5 W. According to monitoring data, the pump rotor rotates at 1410-1440 RPM. The pump bearing should last around 50,000 hours according to the manufacturer warranty. The level of noise shouldn’t exceed 28 dBA.

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