Specifications include, but are not limited to: 3.1.The Vendor’s technicians shall perform maintenance in accordance with the manufacturer’s published service procedures, using only refill extinguishing agents listed on the container and/or recommended by the manufacturer. 3.2.Gauge pressures shall be in operable range. 3.3.Nozzles, discharge valves and hoses shall be unobstructed, and lock pins and wire seals shall be in place. 3.4.When existing inspection tags are replaced, the vendor shall attach labels or tags imprinted with the vendor name, address, telephone number, and month and year maintenance was performed on each extinguisher. The tag/label shall identify the person performing the service, indicate if recharging was performed, and show the date the test was completed.