Test Run - Filling and Checking the Seal on the Cooling Circuit
It's all set up now, we're ready to roll - it's time to feed water into our cooling system. First, though, we have to fill a container with water and attach it to the inlet of the cooling system. There's nothing simpler than using normal tap water for this, as long as it isn't too hard. If your water is too hard, this can eventually produce furring in the cooling system. In order to make our cooler look more appealing, we dyed the water red with ink. This also makes it much easier to determine the flow rate. It is absolutely essential to ensure that your system is watertight before installing it in your PC. Any subsequent leakage while running the PC would cause a short, and thus ruin a lot of components.
In order to ensure that the cooling system is perfectly watertight, the cooling circuit should be set up outside the PC system and allowed to run for a minimum of 12 hours.