Water Cooling Maintenance

[Quiyum]

Hello , 
I got my PC last year March and this is my first ever PC .
So I recently got to know that I might need to maintain/change my liquid in my cpu cooler? I have no idea.
It is "Cooler Master Cpu Liquid ML360R Rgb" . The whole Specs is attached .
Can you guys help me understand if I need to do anything like change anything or keep it as it is

[Deli]

It's an AIO. You can't replenish the coolant. Just clean off the dust on the fans and radiator.

[VIVO-US]

An AIO cooler can be cleaned and refilled if you're careful.  I had to do this with an AIO here a while back: