Hi, 2 years ago I have an evga clc 280, and I'm noticing that the water temperature rises too high, which leads me to get high temperatures in the processor (I get 70-75 of peaks when playing and 98ºc to stress the cpu, and obviously dust and change the thermal paste).

So I have a doubt, how can I change the cooling water of the AIO, I saw videos of other AIOs that are made through the pump, this is also the case or is there another way?

Cool GTX
I'd check the TIM under the cooler - After vacuum clean the radiator / fans / case & filters
 
these are sealed units ... with 5yr warranty
 
CLC (CPU AIO) FAQs:   https://www.evga.com/supp...gories.aspx?topicid=22

in iddle I have good temperatures 29-30, but when playing it rises very high (70, before max 50), which will be a problem of the WC, or you have to iddle the processor