Classification1. Water & Foam Type- Water Extinguishers are for Class A fires onlybut sometimes can be used for the Class B fires– they should not be used on Class C fires.- Foam Extinguishers can be used on Class A &Class B fires only. They can’t be used on Class Cbecause of Electrical Shock Hazard.
Classification2.Dry Powder Type Standard or Multi-Purpose Dry Powder Fire Extinguishers are safe to use on most kinds of fire, (Class A, B & C).E.g. Fires caused by petrol, oil, fat, paint, solvents, grease, propane, butane and natural gas, as well as electrical equipment.
Classification3. Carbon Dioxide Type - Carbon dioxide (CO2) extinguishers contain carbon dioxide forced into its liquid state by pressure. This type of extinguisher is available in several sizes from 2.5 to 20 pounds (1.1 to 9 kilos).
How To Use• Pull the Pin• Aim at the base of the fire• Squeeze the lever slowly• Sweep from side to side
Maintenance• Basic Service : Check weight and correct pressure.• Extended Service: Water, Wet Chemical, Foam & Powder extinguishers require every five years.• Overhaul: CO2 extinguishers, due to their high operating pressure, are subject to pressure vessel safety legislation and must be hydraulic pressure tested, inspected internally & externally and date stamped every 10 years.