There are a number of different types of portable fire extinguishers, each can be identified by the colour coding and labelling. Check that the extinguisher you intend to use is suitable for the type of fire encountered eg a water extinguisher must never be used on any fire involving electrical equipment.
There are four (4) basic steps for using modern portable fire extinguishers.
The acronym PASS is used to describe these four basic steps.
Pull pin at the top of the extinguisher, breaking the seal. When in place, the pin keeps the handle from being pressed and accidentally operating the extinguisher. Immediately test the extinguisher. (Aiming away from the operator) This is to ensure the extinguisher works and also shows the operator how far the stream travels.
Approach the fire standing at a safe distance. Aim the nozzle or outlet towards the base of the fire.
Squeeze the handles together to discharge the extinguishing agent inside. To stop discharge, release the handles.
Sweep the nozzle from side to side as you approach the fire, directing the extinguishing agent at the base of the flames. After an A Class fire is extinguished, probe for smouldering hot spots that could reignite the fuel.