WÄRTSILÄ 46DF, Product Manual

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14.4.1.1 Engine turning device (9N15)
The crankshaft can be slowly rotated with the turning device for maintenance purposes. The
motor starter must be designed for reversible control of the motor. The electric motor ratings
are listed in the table below.
Table 14-1 Electric motor ratings for engine turning device
Current [A] Power [kW] Frequency [Hz] Voltage [V] Engine type
5 2.2/2.6 50 / 60 3 x 400/440 Wärtsilä 46DF
(6L,7L,8L)
12 5.5/6.4 50 / 60 3 x 400/440 Wärtsilä 46DF
(9L,V-engines)
14.4.1.2 Pre-lubricating oil pump
The pre-lubricating oil pump must always be running when the engine is stopped. The pump
shall start when the engine stops, and stop when the engine starts. The engine control system
handles start/stop of the pump automatically via a motor starter.
It is recommended to arrange a back-up power supply from an emergency power source.
Diesel generators serving as the main source of electrical power must be able to resume their
operation in a black out situation by means of stored energy. Depending on system design
and classification regulations, it may be permissible to use the emergency generator.
14.4.1.3 Stand-by pump, lubricating oil (if applicable) (2P04)
The engine control system starts the pump automatically via a motor starter, if the lubricating
oil pressure drops below a preset level when the engine is running. There is a dedicated sensor
on the engine for this purpose.
The pump must not be running when the engine is stopped, nor may it be used for
pre-lubricating purposes. Neither should it be operated in parallel with the main pump, when
the main pump is in order.
14.4.1.4 Stand-by pump, HT cooling water (if applicable) (4P03)
The engine control system starts the pump automatically via a motor starter, if the cooling
water pressure drops below a preset level when the engine is running. There is a dedicated
sensor on the engine for this purpose.
14.4.1.5 Stand-by pump, LT cooling water (if applicable) (4P05)
The engine control system starts the pump automatically via a motor starter, if the cooling
water pressure drops below a preset level when the engine is running. There is a dedicated
sensor on the engine for this purpose.
14.4.1.6 Circulating pump for preheater (4P04)
The preheater pump shall start when the engine stops (to ensure water circulation through
the hot engine) and stop when the engine starts. The engine control system handles start/stop
of the pump automatically via a motor starter.
14-8 DBAD209883
Wärtsilä 46DF Product Guide 14. Automation System