Product Overview of Floor-Mounted Dry Powder Fire Extinguishing Systems

I. Overview

FF B -ACTX- ZY 02 The suspended-type dry‑powder fire‑extinguishing device (hereinafter referred to as the “fire‑extinguishing device”) is a next‑generation, highly efficient and environmentally friendly firefighting product. It is charged with… ABC Ultra-fine dry powder extinguishing agent is non-toxic and harmless, does not corrode protected materials, is non-irritating to human skin and respiratory tract, and delivers rapid, highly efficient fire suppression.

This fire‑extinguishing system features a simple structure, reliable performance, and convenient installation and maintenance. It can be used for total flooding in enclosed spaces as well as for localized suppression in open areas, making it an ideal automatic fire‑extinguishing solution for hazardous environments such as urban utility tunnels, industrial and mining facilities, power plants, substations, and petrochemical plants.

Standards for the Production and Testing of Fire Extinguishing Systems XF602-2013 Dry Powder Fire Extinguishing System

II. Scope of Application

1 . Firefighting A Class A fires: such as fires involving combustible solids like cotton, wood, hemp, paper, rubber, plastics, and tobacco.

2 . Firefighting B Class A fires: such as fires involving flammable liquids like crude oil, heavy oil, diesel, gasoline, and organic solvents, as well as combustible solids that can melt.

3 . Firefighting C Class C fires: such as fires involving flammable gases like coal gas, natural gas, acetylene, and others.

4 . Firefighting E Class A fires: such as fires involving energized equipment in computer rooms, substations, cable tunnels, cable trenches, and power compartments within urban utility tunnels, among other locations.

This device is not suitable for extinguishing fires involving the following substances:

1. Chemical substances such as nitrocellulose, explosives, nitrogen oxides, and fluorine, which can undergo oxidation reactions even in the absence of air, together with oxidizing agents;

2. Reactive metals such as potassium, sodium, magnesium, titanium, and zirconium, as well as their hydrides.

III. Composition of the Fire Extinguishing System

The fire suppression system is an integrated unit comprising ultra-fine dry powder extinguishing agent, an electric initiator, a solid‑gas conversion agent, a pressure‑rated steel housing, a long‑nozzle, an aluminum diaphragm, and a mounting bracket.

  4. Model and Main Performance Parameters

1 , Model and Main Performance Parameters Table ( 1 )

V. Operating Principle

1 , Fire-extinguishing principle

When the fire suppression system receives an activation signal, the solid‑gas conversion agent is triggered, causing the gas inside the container to expand rapidly and the internal pressure to rise. This pressure ruptures the nozzle diaphragm, propelling the ultrafine dry powder into the protected area, where it quickly disperses in all directions, establishing a total flooding extinguishing condition. Under the continuous physical and chemical action of the ultrafine dry powder, the flames are extinguished.

2、 Fire suppression system activation methods

The device is simple and reliable to operate, offering two control modes: manual and system‑interlocked.

( 1 ) Manual start

When the fire suppression controller is set to the “Manual” position, the fire suppression system operates in manual mode. In the event of a fire in the protected area, manually pressing the start button on the fire suppression controller or the manual control panel will activate the system to discharge the extinguishing agent and suppress the fire.

After the fire alarm control panel issues a start command, or after the start button is manually pressed, during the set delay period… 30s During this period, if personnel determine that no fire has occurred or that the fire has already been extinguished, they may press the emergency stop button to halt the activation of the fire suppression system.

( 2 ) System Integration (Automatic Startup)

When the fire suppression controller is set to the “Automatic” mode, the fire suppression system operates in automatic control. Upon detecting a fire in the protected area via smoke and heat detectors, the controller first activates audible and visual alarms to alert personnel within the zone to evacuate, after which the controller proceeds to… 30S After a delay, the system automatically supplies power to the fire‑extinguishing device’s igniter. Once the igniter is energized, it activates the solid‑to‑gas converter, which generates a large volume of gas to discharge the extinguishing agent and suppress the fire.

VI. Installation of Fire Extinguishing Systems

( 1 ) Installation and Operation Instructions for Dry Powder Fire Extinguishing Systems

1 • During product transportation, handling, and storage, dropping and rough loading/unloading are strictly prohibited.

2 The fire suppression system must not be serviced while energized. If maintenance is required, the system’s power supply must be disconnected, and the system’s activation circuit must be shorted.

3 , The safety current for the electrical start-up of the fire-extinguishing system shall not exceed 150m A ;

4 , Task testing is prohibited without the authorization of the manufacturer’s representative;

5 , Verify that the internal supply components in the inspection report are complete;

6 , Check whether the device leads are shorted;

7. Inspection and Maintenance of Fire Extinguishing Systems

1. The user unit shall establish a maintenance management system and assign a dedicated person to conduct regular inspections.

2. Fire extinguishing systems shall be inspected at least once every six months. Once a fire extinguishing system has been activated, it must be replaced.

3 The extinguishing agent used during refilling must be ABC Ultra-fine dry powder extinguishing agent, and shall comply with GB4066 -2017 Requirements.

4.   Maintenance of fire-extinguishing equipment must be performed by a specialized manufacturer approved by the public security fire supervision authority.

VIII. Precautions

1. During the installation of the fire suppression system, avoid impacts and do not loosen any components of the system without authorization.

2.   Fire-extinguishing devices shall not be installed in the following premises or locations:

a ) Near sources of fire or heat;

b ) Locations that are frequently subjected to vibration and impact;

c ) Areas prone to rain, water splashing, or flooding.

3.  When the fire suppression system discharges its extinguishing agent, all personnel on site shall evacuate as quickly as possible. After the fire has been extinguished, the area must be ventilated to remove residual gases before entry is permitted.

4.    This product contains hazardous materials. Do not disassemble or reassemble it if you are not a qualified professional, and keep a safe distance from the product during spraying.

FAQ for Non-Pressurized Suspended Dry Powder Fire Extinguishing Systems

Q: What types of facilities are suitable for non‑pressurized suspended dry‑powder fire‑extinguishing systems?

A: Suitable for enclosed spaces such as distribution rooms, cable trenches, small computer rooms, and energy storage cabinets; it can extinguish Class A, B, and C fires, as well as energized electrical fires.

Q: What is the key difference between a non‑pressurized suspended dry‑powder system and a pressurized one?

A: The non‑pressurized cylinder contains no internal storage pressure; dry powder is discharged by the gas‑generating agent inside, eliminating the risk of long‑term pressurization‑induced leakage.

Q: What are the activation methods for non‑pressurized suspended dry‑powder fire‑extinguishing systems?

A: It can be activated automatically by a heat‑sensitive glass bulb when exposed to high temperatures, or it can be connected to a fire alarm system to enable electrically controlled, interlocked activation.

Q: What are the requirements for installing the suspension?  

A: The lifting device is securely mounted at the top of the protected area, with the nozzles oriented downward to target the protected zone. There must be no obstructions beneath the unit to ensure full‑coverage dry‑powder discharge.

Q: What items should be checked during routine inspections?

A: Inspect the cylinder for rust, corrosion, or damage, and verify that the heat‑sensitive glass bulb is intact. Since there is no pressure gauge, pressure monitoring is not required; a visual inspection of the exterior is sufficient.

Q: Can this device be used continuously in humid environments?

A: It is not recommended to store the device for extended periods in high-humidity or highly corrosive environments, as this can lead to corrosion of the housing and compromise the reliability of its operation.

Q: How should the site be handled after the system has discharged its extinguishing agent?

A: After extinguishing the fire, first disconnect the power supply, ensure adequate ventilation, and allow the dust to settle before cleaning up; personnel must wear masks and safety goggles for proper protection.

Q: Will dry powder agents damage precision electronic equipment?

A: Dry powder leaves behind dust residue and has slight corrosivity; therefore, it should be used with caution in precision electronic equipment rooms, and the dust must be thoroughly cleaned up after extinguishing the fire.

Q: Can the extinguishing agent be refilled on-site after discharge or upon expiration?

A: On-site refilling is not supported. Once the device has failed to discharge or reached its service life, it must be replaced as a whole, and the used unit shall be handed over to a qualified fire‑protection agency for recycling.

Q: Can the product be used for fire protection project acceptance?

A: The product is accompanied by a valid fire‑safety inspection report, complies with applicable fire‑safety codes, and can be integrated into the overall fire‑safety acceptance process for the protected area upon installation.