How often should the fire extinguisher be charged two times?
After each use, the fire extinguisher must be sent to the maintenance unit which has obtained the maintenance permit for inspection, replacement of damaged parts, re filling of the extinguishing agent and driving gas.
Portable and pusher type 1211 fire extinguishers, portable and trolley dry powder fire extinguishers. As well as hand and cart type carbon dioxide fire extinguishers for five years, and every two years thereafter, hydrostatic tests must be carried out.
Whether or not the fire extinguisher has been used or not used, the plant must be sent to the maintenance unit for hydrostatic test when the period of departure is up to the prescribed time limit.
Fire extinguisher maintenance, according to the "building fire extinguisher and acceptance inspection standard" GB_50444-2008 article 5.3.2, dry powder fire extinguisher maintenance cycle is in after the first repair once every 2 years, the first repair was after 5 years (that is, 5 years after the purchase of new fire extinguishers).
Dressing is not clearly defined, the so-called powder is dry powder Bai, only dry powder broken or caking before replacement.
