14.4.1.5 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.
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.
14.4.1.6 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.
14.4.1.7 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.
14.4.1.8 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.
14-12 DBAE248994
Wärtsilä 31DF Product Guide14. Automation System
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