Annual Inspection and Maintenance of Automatic Fire Alarm System All kinds of fire-fighting electrical equipment and automatic conversion device of main and standby power supply should be converted three times, and each time is normal. Fire alarm controller (1) The actual number of installations is less than 5, and all of them are inspected. (2) 6-10 sets, 5 sets for random inspection (3) Installation of more than 10 fire detectors, sampling inspection according to the proportion of 30-50% of the actual number of safety rotations, and no less than 5 fire detectors. (4) Installation of less than 100 units and inspection of 20 units (each circuit should be sampled) (5) Actual installation of more than 100 units, according to the actual number of 10- 20% of the sample inspection, not less than 20 units Indoor hydrant (1) Start-stop operation of control room 1- 3 times (2) Operation of the hydrant button, according to the actual number of safe rotation 5-10% proportion of automatic sprinkler system sampling inspection 3. Start-stop operation of control room 1- 3 times (4) Sampling inspection of flow indicator and signal valve according to 30-50% proportion of actual installation quantity Full check of pressure switch, electric valve, solenoid valve, etc. _The total number of inspections for rolling shutter doors under 5 phrases is not less than 5 phrases, and more than 5 phrases are sampled according to 20% of the actual number, and the total number is not less than 5 phrases.