Volvo TAMD75P Operator's Manual page 50

Maintenance: Seawater system
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Seawater system. Drain
To prevent the system from bursting during cold
weather the seawater system must be drained when
there is a risk of freezing
WARNING! Risk of water entering. Close the
seawater cock before starting work on the sea-
water system.
An alternative to draining is to keep the engine room
free from frost using an approved heater fan.
Draining
1. Close the seawater cock.
2. Remove the cover on the seawater pump and al-
low the water to run out.
3. Remove one drain plug (S) at a time and allow the
water to run out until all drain points on the engine
have been dismantled.
IMPORTANT! Make sure the coolant really
runs out. It may be necessary to clean away
deposits inside the drain cocks.
4. Drain the water from the reverse gear oil cooler by
opening tap (1).
5. Drain/empty any extra equipment such as the sea
water filter, bilge/flushing pump etc.
6. Install the lid on the sea water pump, connect all
hoses and close/install all drain taps and plugs be-
fore you leave the boat.