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.
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.
To put out a fire...
To pressurize a Sears dry chemical fire extinguisher model 958044, first ensure that the extinguisher is fully charged and that the safety pin is in place. Locate the pressure gauge on the extinguisher; it should be in the green zone. If the pressure is low, use a compatible air compressor or nitrogen tank to refill the extinguisher by connecting it to the fill valve. Always follow the manufacturer’s guidelines and safety procedures when handling fire extinguishers.
A class C fire extinguisher is used for electrical fires. A all purpose A, B, C extinguisher can also be used.
The Kidde FA110 Multi Purpose Fire Extinguisher 1A10BC is the best selling fire extinguisher on Amazon. Averaging 4-stars out of 5 on reviews by customers.
When it comes to fire extinguishes, the smaller the volume of the extinguisher the more pressure the gas has. So if the size of the fire extinguisher is small, the pressure might be high.
For all-purpose fire protection, you should have a multipurpose fire extinguisher that is labeled as ABC, which can put out fires involving ordinary combustibles, flammable liquids, and electrical equipment.
CO2 extinguisher have a max test pressure of 20,700 kPa. Max design operating pressure of 18,570 kPa. The min burst pressure of a cylinder must be at least 2.7 times the max operating pressure. So the burst pressure of a CO2 fire extinguisher will be at least 50,139 kPa
The gas used in fire extinguishers is carbon dioxide. That is only for a CO2 extinguishers High pressure and no Gauge on the unit(about 2000psi). Normal Dry chemical extinguisher ABC, BC (195psi)Use Nitrogen as the propellent.
In a 5 kg DCP cartridge type extinguisher .the co2 cartridge pressure becomes 7 kg/cm2.