INJECTOR GP-FUEL 3920206 - Caterpillar

This switch provides an input for the user in order to override the engine monitoring system protection strategies.The switch allows the user to override the engine monitoring system in emergency situations. This situation would occur when an engine has been derated or when an engine has been shut down. The engine must be immediately operated at full capability while the condition still exists. This feature can also be used in order to prevent an engine shutdown during critical maneuvers. The emergency override switch is a two-position ON/OFF switch. The switch is located on the electronic instrument panel. When the emergency override switch is in the OFF position, the engine monitoring system will operate as the system is programmed. When the emergency override switch is in the ON position, most of the engine monitoring system will be disabled. However, all the warnings and the overspeed shutdown will not be disabled. These two features will continue to function normally. When the emergency override switch is in the ON position, the performance of the engine will be normal. The system will also allow the engine to restart if the engine has already been shut down. The alarms and the events will continue to function normally. An event will be logged when the override switch is put in the ON position. An event will be logged when the override switch is switched back to the OFF position.