A residential fire sprinkler system is basically maintenance free. The only testing required on a regular basis is opening the drain/test valve to check the alarm operation. The rest of the system is designed to operate properly for 20 years or more without any maintenance.
Some basic precautions to safeguard your fire sprinkler system are:
Avoid painting or otherwise covering the fire sprinkler devices, as that will
affect their sensitivity to heat.
Do not hang decorations, plants or other objects from the sprinkler or piping.
Home fire sprinklers are technologically very advanced, but the basic way they work is very simple. Fire sprinklers have no moving parts and act simply as a water plug that releases at a particular temperature.