On Suspended-Type Heptafluoropropane Maintenance Methods

　　Hanging-type heptafluoropropane, a specific application form of heptafluoropropane, has gained widespread recognition in the market due to its compact size, convenience, easy installation, and rapid fire suppression efficiency. However, how to properly maintain and use hanging-type heptafluoropropane remains a challenge—and that’s exactly what we’ll explore in detail today: how to effectively maintain this type of system.

　　The suspended-type heptafluoropropane system is available in three types: electrically controlled, temperature-controlled, and electro-thermally dual-controlled. During maintenance and upkeep, it is essential to strictly follow the relevant provisions outlined in GB50263-2007, "Construction of Gas Fire Extinguishing Systems."

　　Daily Operation, Maintenance, and Upkeep

　　1. Keep the protected area and control room clean, dry, and well-ventilated.

　　2. The surface of the fire suppression system and alarm fire control unit is clean and dust-free.

　　3. The safety pins and lead seals of the drive mechanism should be intact and undamaged.

　　4. Check the device nameplate and warning signs to ensure they are undamaged, clean, and clearly visible.

　　Quarterly maintenance and upkeep

　　1. Check the pressure of each fire extinguisher cylinder; the pressure gauge should indicate a value within the green zone to be considered normal.

　　2. Conduct a visual inspection of all equipment components, including fire extinguishing agent storage cylinders, container valves, electromagnetic actuation devices, nozzles, signal feedback units, pressure gauges, and more. Ensure there is no evidence of impact, deformation, or other mechanical damage. Verify that the surface coating remains intact without rust, and confirm that nameplates are clear, protective covers, lead seals, and safety signs are all complete.

　　3. Conduct a visual inspection of all device components, including fire extinguishing agent cylinders, heat-sensitive release assemblies, pressure gauges, and more.

　　Annual Maintenance and Servicing

　　1. The opening conditions of the protected area, the intended use of the protected area, as well as the types, quantities, and distribution of combustible materials comply with design specifications.

　　2. Conduct a comprehensive inspection of the fire suppression system: Ensure all components are securely connected with no looseness, verify that the extinguishing agent delivery pipes and nozzle orifices are free of blockages, and be sure to maintain thorough cleanliness of the entire system.

　　3. Conduct alarm and activation simulation tests on the fire alarm and suppression controller. All signals and actions—such as fire detection, alarm triggering, and fire suppression control—operated normally. Verify that the drive mechanism functions correctly under both automatic and manual control modes, including emergency start and emergency stop procedures.

　　Remember: When conducting the simulation experiment, the electromagnetic actuator should be removed from the container valve.

　　4. Remove the signal feedback device for inspection, manually push the piston (simulating the pressurized discharge of extinguishing agent). The discharge indicator light should illuminate, the signal should be properly fed back, and the system should be manually resettable.