HOW ARE THESE EXTINGUISHERS INSPECTED? DOES THE INSPECTION REQUIRE SPECIAL EQUIPMENT?
The National Fire Protection Association, in its Standard No. 17, the Standard for Dry Chemical Extinguishing Systems, outlines the monthly and semi-annual inspection requirements for both stored pressure and side cartridge operated systems. Stored pressure extinguishers must be de-pressurized, the valve assemblies rebuilt and the dry chemical removed and replaced every six years. No other inspections are required to determine if the dry chemical has been contaminated, is clumped, or if the siphon tube has been damaged. Because special equipment is required to perform this service, the extinguisher must be removed from the installation and taken to a service facility. The dry chemical in side cartridge operated units is to be inspected every six months. This can be done quickly on site by simply removing the extinguisher cap. The Dry Chemical needs to be replaced only if it is clumped or shows evidence of moisture. 6. HOW IMPORTANT IS IT TO HAVE A GAUGE ON THE EXTINGUISHER? ARE THEY RE
