Inspect the valves of the system once a month to make sure they are in the open position, accessible and not blocked by any debris, locked to prevent tampering and free of leaks. Tighten any loose connections.
Check all pipes for signs of leaks or corrosion.
Check the air gauges and water gauges to ensure the correct pressure is maintained for proper operation. Compare the gauge reading to the instruction manual. The water gauge, generally, should read between 50 psi to 100 psi.
Inspect all alarm devices for fresh batteries and ensure they are in good working condition.
Check all fire department attachments to the system for signs of leaks or damage. Call your local fire department if any signs of damage are apparent.
Open the inspector's test valve slowly until water begins to drip out. Listen for the alarm bell from the system. When the alarm bell sounds, close the valve.
Inspect the sprinkler heads for damage such as rust or bending.
Pour water down the main drain to ensure that it is not clogged.
Turn off the water to the system. Open and close all the valves to ensure they have the correct range of motion.