III. SYSTEM SHUTDOWN & STARTUP:
A. Shutdown
A. Close main control valve.
B. Silences tamper alarm.
C. Open main and auxiliary drains to drain system piping if repair work or sprinkler replacement is required.
NOTE: Wait until the sound of draining water has stopped and/or the inlet and outlet pressure gauges read zero pressure, before performing and maintenance work.
The above information is provided as a courtesy and is not intended to replace the outlined procedures as given in NFPA 24. It is the owner’s responsibility to follow the outlined procedures in NFPA 24.
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