Override system
108
Read this manual carefully before starting any work!
This is particularly applicable to the chapter “General Safety Instructions”
and the respective safety instructions in the chapters.
11.4 Procedure example of override function
Using the example of the coolant temperature
Boundary conditions:
- Engine in running operation
- Override is activated and runs on:
Alarm system
- Display on the bridge
- Display in engine room
Safety system
- Display in engine room
Alarm system:
Limit value infringement at 95 °C coolant temperature.
Power reduction is prevented by activation of the override function.
Limit value infringement is canceled again at a coolant temperature of 90 °C.
- Error message can now be acknowledged and reset on the bridge display
- Override can now be deactivated and reset on the bridge display
Safety system:
If the coolant temperature rises to 98 °C the safety system is triggered.
Power reduction/engine stop is prevented by activation of the override function.
To prevent engine stop upon deactivation of the override, the
- coolant temperature must be reduced to 90 °C and
- the stop alarm in the engine room must be acknowledged and reset on the safety system
Errors cannot be acknowledged and reset at the bridge display as the safety system operates
independently from the alarm system.
This means that the reason for the excessive temperature must first be determined in the engine room,
remedied and then the error must be acknowledged and reset.
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