Weekly: Inspect dry valves controlling water supplies used exclusively for the system to ensure they are accessible and working properly.
Monthly: Inspect wet valves to ensure they are wide open and sealed or locked into position.
Quarterly:Test sprinkler system alarm using the most hydraulically remote test connection or the alarm by-pass test connection (when conditions warrant). Also test transmitters and water flow actuated devices where an electrical supervisory signal service is provided.
Annually: Test system water pressure with the main drain valve fully open to ensure there are no obstructions or deterioration in the main water supply. Trip-test dry valves using the system test pipe to ensure proper operation and that alarms are working. Test antifreeze systems by measuring specific gravity of the solution and adjust as necessary. For pre-action and deluge systems, test heat-activated devices on each circuit as outlined in NFPA 72: National Fire Alarm and Signaling Code.
Every Three Years: Conduct a full flow trip test on dry pipe systems. Additional Testing of Sprinkler Heads
Additional Testing of Sprinkler Heads
- Every five years for heads in harsh environments
- Every 10 years for dry pipe heads
- Every 20 years for fast response heads
- Every 50 years for ordinary sprinkler heads
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