you must.

during the spot check, the pressure gauge of the fire extinguisher is mainly checked to ensure that the pointer is within the normal range. When the area is lower than the green line, it should be pressurized for maintenance. The newly purchased ABC dry powder fire extinguisher should be subjected to water pressure test and then every two years. The compulsory retirement period of dry powder fire extinguisher tank is 11 years. Such frequency and maintenance requirements can ensure that fire extinguishers can play an effective role in an emergency and protect the safety of people and property.