Products

Carbon Dioxide (CO2) fire extinguishers are specialized fire suppression devices effective for certain types of fires. Here’s an overview of their key features and uses:

Composition

• CO2 Gas: These extinguishers contain compressed carbon dioxide, which is released to extinguish fires.

Fire Classes

• Class B: Flammable liquids, such as oil, gasoline, and solvents.
• Class C: Electrical fires involving live equipment.
• Not Suitable for Class A: They are not effective for ordinary combustibles like wood or paper.

Mechanism of Action

• Displacement of Oxygen: CO2 works by displacing oxygen around the fire, effectively smothering it and interrupting the combustion process.
• Cooling Effect: The gas also has a cooling effect, which can help lower the temperature of the burning material.

Advantages

• No Residue: CO2 extinguishers leave no residue, making them ideal for use in environments with sensitive equipment, such as server rooms and laboratories.
• Non-Conductive: Safe for use on electrical fires, as CO2 is non-conductive.
• Lightweight and Portable: Generally lighter than some other extinguisher types, making them easier to handle.

Considerations

• Limited Range: CO2 extinguishers typically have a shorter discharge range compared to other types, so users need to be closer to the fire.
• Risk of Asphyxiation: In confined spaces, CO2 can displace oxygen, posing a risk of asphyxiation. Proper ventilation is essential.

Maintenance

Regular inspections are crucial. Check for:

• Fullness and pressure gauge readings.
• Signs of damage or corrosion.
• Proper function of the nozzle.

Usage

For effective use, remember the PASS method:

• Pull the pin.
• Aim at the base of the fire.
• Squeeze the handle.
• Sweep side to side.

In summary, CO2 fire extinguishers are a valuable option for fighting flammable liquid and electrical fires, especially in areas where residue from other extinguishing agents could cause damage.