MAN Series 60 Engine Operator's Manual (EN) — страница 38 из 153

SERIES 60 ON-HIGHWAY ENGINE OPERATOR'S GUIDE NOTICE: NOTE: Holding down the Stop Engine Override Switch will not prevent the engine shutdown sequence. You must continue to reset the automatic shutdown system by pressing the Stop Engine Override Switch at intervals of approximately 15 to 20 seconds. When the RSL comes on, the computer has detected a major malfunction in the engine that requires immediate attention. It is the operator's responsibility to shut down the engine to avoid serious damage. It takes 30 seconds from the time the automatic shutdown sequence begins until engine shutdown.

Therefore, the operator must press the override switch just prior to engine shutdown and continue to do so until the vehicle can be brought to a stop in a safe location. The engine can be conﬁgured to give a warning only, to ramp down (reduce power) or to shut down. Ramp down will reduce engine rpm to a pre-determined speed, but will not shut down the engine. With the 30-second shutdown option, the engine will begin a 30-second, stepped power-down sequence until it shuts down completely. Immediate Speed Reduction The immediate speed reduction option will bring engine rpm back to a predetermined speed, but will not shut down the engine.

A “Stop Engine Override” can be supplied in case the vehicle is to operate in a critical location. Stop Engine Override Switch The engine should not be restarted after it has been shut down by the engine protection system, unless the problem has been located and corrected. This feature allows the operator to override the automatic stop engine sequence by pressing the Stop Engine Override Switch every 15 to 20 seconds to prevent engine shutdown from occurring. Red Stop Lamp The conditions that will cause the RSL to come on are: NOTE: The Stop Engine Override Switch and the Diagnostic Request Switch are the same.