[possumface]

sounds like you have a service man that might know what he is doing. your duct & plenum nozzles can get plugged up pretty fast maybe he should have at least try to unplug with grease cleaner on those but some are just not worth the risk. your links are required to be changed every 6 months now it used to be yearly but thanks to new fire codes its changed. i will agree with most firemen don't know to much about fire suppression systems we really want them to learn the basics so they know how a fire test should be conducted and what to look for in case of rag taggers in the area. we are pretty lucky around here in the past year the firemen have identified the crooks and banned them. the fire system & portable fire extinguishers in your restaurant are very important don't go cheap on them its a mistake ive seen to often. if you don't think so then just look at the stats of restaurants that have burn't down in your area. ive been around for over 30+ yrs in fire suppression and seen alot of crazy things happen with hood fires. and yes there are alot of crooks that act like they know about fire systems but sooner or later the law of yin & yang catch up with them its the forces beyond our control that puts the kabosh on them