No. The diaphragm on the pressure gauge is leaking, and the gauge will soon be inoperative. Have the extinguisher serviced and repaired.
Yes, an automotive fire extinguisher needs to be recharged whenever you have used it or whenever the pressure gauge falls outside of the green range.
what is the purpose of the fire service?
To fill a fire extinguisher properly, follow these steps: Check the pressure gauge to ensure it is in the green zone. Remove the safety pin and nozzle. Pour the appropriate extinguishing agent into the canister. Reattach the nozzle and safety pin. Shake the extinguisher to mix the contents. Check the pressure gauge again to ensure it is still in the green zone. Remember to always follow the manufacturer's instructions for your specific fire extinguisher.
It depends on the shell you fire.
The purpose is because the water pressure hydrauls the water and causes it to multiply to the power, therefore it makes the water stronger, making it easier to turn off the fire
Mostly because it's pointless. The bottle can only be filled up with specialized equipment, and they have a gauge to tell them how much is in it. Once the extinguisher is used, it has to be returned anyway to be refilled regardless how much CO2 you may have used. If you happen to be using it when it runs out, well, the fire is out of control already.
to escape when there is a fire
A 12 gauge shotgun cannot fire 20 gauge shells.
The purpose of fire stairs are too messy. You have to keep your stairs clean.
It had no purpose. It was an accident, a disaster.
To put out a fire...