3.5 Stop process Operation Shutting down Avoid switching-off from full load ope- ration (coking/blockage of the remai- ning oil in the turbocharger bearing housing) Lubricating oil is no longer supplied to the turbocharger! Run the engine after relieving the load for about 1 minute at low idling speed. The control unit remains active for about another 40 seconds to save the system data (lag) and then switches off automatically. A B 3 C Electrical shutdown (optional) z Move the key to position 0. Pilot lamps A+B+C go out. 21