FAQ on Suspended Dry Powder Fire Extinguishing Systems

Q: In which types of environments are suspended dry‑powder fire‑extinguishing systems suitable for use?

A: Suitable for enclosed or semi-enclosed spaces such as distribution rooms, energy storage cabinets, computer rooms, and warehouses; capable of extinguishing Class A, B, and C fires, as well as fires involving energized electrical equipment.

Q: What are the different activation methods for suspended dry powder fire suppression systems?

A: It features automatic activation via a heat‑sensitive glass bulb and can also be integrated with a fire alarm system for electrically controlled activation; certain models support manual emergency activation.

Q: Hanging dry‑powder fire‑extinguishing systems are classified as pressurized and non‑pressurized. What are the differences between the two?

A: Stored-pressure types maintain constant internal pressure year-round; non‑stored-pressure types are pressure‑free under normal conditions and rely on gas‑generating agents to propel the dry powder, offering greater safety during transportation and storage.

Q: What are the installation requirements for a dry powder suspension system?

A: Install the device using a top-hung mounting method. Ensure sufficient spray clearance beneath the unit to fully cover the protected area, avoid obstructions, and secure it firmly.

Q: Will the discharge of dry powder have any impact on equipment?

A: Dry powder has a certain degree of adhesion, so it must be cleaned up promptly after extinguishing the fire; in environments with precision electronic equipment, it is necessary to assess the impact of dust on components.

Q: What items need to be inspected regularly for suspended dry powder fire suppression systems?

A: For stored-pressure units, check the pressure gauge reading, inspect the exterior for rust or damage, verify the integrity of the temperature-sensing element, and confirm the device’s expiration date.

Q: What should be done once the equipment has reached its service life?

A: Once the expiration date is reached, the product must not be used further. Contact the manufacturer or a professional fire‑safety organization for recharging or disposal; unauthorized disassembly is prohibited.

Q: What causes accidental spraying, and how can it be prevented?

A: High-temperature baking, external impact, and electrical circuit malfunctions can all trigger unintended spraying; install the device away from heat sources, ensure proper protective measures are in place, and follow standardized wiring procedures.

Q: Can suspended dry powder fire suppression systems be used outdoors?

A: Standard models are not suitable for long-term outdoor use; for outdoor applications, opt for custom‑made, corrosion‑resistant, and waterproof models, and ensure adequate shading and rain protection.

Q: After the fire suppression system has been activated and discharged, what precautions should be observed in the protected area?

A: After extinguishing the fire, ventilate the area first; enter the site only after the dust has settled, ensure proper protective measures are in place, and promptly replace the entire firefighting system.