FIBA !! FIBA in LHB coaches , क्या है Air spring कैसे चार्ज होता है, FIBA activate होने पर क्या करें

FIBA is a device provided in air spring coaches for monitoring of air pressure in springs, and applies brake if pressure drops below 1.0±.1kg/cm² in any springs of it's bogie, each bogie have one FIBA Device ,means 2 devices per coach link for line diagram:- https://photos.app.goo.gl/NTavA2vugBP...