You need to follow a four-step process for using a fire extinguisher.
There are certain steps that one has to keep in his mind while refilling a fire extinguisher.
Fire extinguisher which has a pressure gauge with a green needle that is considered good fire extinguisher. Because most of the fire extinguishers have pressure gauges with a red section and a green section.
A safety pin prevents the fire extinguisher from being discharged by accident. When it comes to the procedure of using a safety pin, you need to grab the ring and pull the pin out from the side of the handle. After this, hold the device so the nozzle is pointed away from you as now the extinguisher is ready to discharge.
A fire extinguisher can be used more than once. Once the fire extinguisher has been used, even for less time, it is advisable to recharge or refilled for further use. But, this refilling work can be done at a certified fire equipment dealer, depending on the type of extinguisher.