SNap reported 1532 B2 door lagging. ~~~~~ FAULT ABLE TO DUPLICATE AT DEPOT.CHECKED J RAIL,ROLLER,CLOSING TIME,OPENING TIME,10/20MM FUNCTION CHECK OK.FOUND MANIFOLD AIR SUPPLY TO DOOR ACTUATOR LAGGING WHEN DOOR START TO CLOSE.C/O MANIFOLD FUNCTION TEST OK.DOOR OPERATION OK.MAGNETIC VALVE I/P VOLTAGE AND RESISTANCE OK.NOTIFICATION      2390540.HAKIM/RAGHU  13.06.2022