Product Guide 2. Operating ranges

•Idling - 5ºC

•High load - 10ºC

For further guidelines, see chapter Combustion air system design.

2.4Operation at low load and idling

The engine can be started, stopped and operated on heavy fuel under all operating conditions. Continuous operation on heavy fuel is preferred rather than changing over to diesel fuel at low load operation and manoeuvring. The following recommendations apply:

Absolute idling (declutched main engine, disconnected generator)

•Maximum 10 minutes if the engine is to be stopped after the idling. 3-5 minutes idling before stop is recommended.

•Maximum 6 hours if the engine is to be loaded after the idling.

Operation below 20 % load on HFO or below 10 % load on MDF

•Maximum 100 hours continuous operation. At intervals of 100 operating hours the engine must be loaded to minimum 70 % of the rated output.

Operation above 20 % load on HFO or above 10 % load on MDF

•No restrictions.