The override switch enables the operator to override the monitoring system. The switch is provided for use in emergency situations when an engine must be operated at full capability immediately. The switch can also be used to prevent an engine shutdown during critical maneuvers. Use of the switch will override conditions of derating and/or shutdown. However, an overspeed shutdown cannot be overridden.
The switch is a two-position "ON/OFF" switch. When the switch is in the "OFF" position, the monitoring system will operate normally.
When the switch is in the "ON" position, the monitoring system is disabled. All of the warnings will continue to function normally. No derating will occur. The overspeed shutdown will continue to function normally. Except for the overspeed shutdown, no shutdowns will occur. If the engine has already had a shutdown, the engine can be restarted when the switch is in the "ON" position. The alarm conditions and events will continue to function normally.
An event will be logged in the ECM when the switch is placed in the "ON" position. Also, an event will be logged in the ECM when the switch is returned to the "OFF" position. No delay is required for use of the switch.