Vacuum System, HVAC

Vacuum System





- The vacuum supply to four solenoids in the system is from the engine manifold via a reservoir and a non return valve.

- The reservoir is located under the battery. The components operated by the solenoids are:
^ The defrost/Demist flaps which are held closed by vacuum are identified by a GREEN vacuum supply tube.
^ The recirculation/Fresh air flaps which are held closed by vacuum are identified by a BLUE vacuum supply tube.
^ The center vent, which is opened by vacuum is identified by a BLACK vacuum supply tube.
^ The water valve which is closed by vacuum and is identified by a RED vacuum supply tube.

- The vacuum supply to the center vent and recirculation/ fresh air flaps have built-in restrictors so that the operation of these flaps is slowed down to avoid the risk of the system hunting. The recirculation flaps can take up to 30 seconds to change state.