Volvo D2 Series Manual do Operador descarregar pdf (Página 47)

Maintenance: Seawater system

Seawater system. Flush cleaning and

corrosion inhibition

When laying up during winter (or out of season), the

seawater system must be ﬂushed clean of all depos-

its and salt crystals. It must also be treated to protect

against internal corrosion.

WARNING! Risk of water penetration. This work

must be carried out with the boat on dry land.

Approaching or working on a running engine is

dangerous. Watch out for rotating components

and hot surfaces.

Glycol is harmful to health (dangerous if ing-

ested). Collect used and drained glycol and take

it to a proper disposal site.

1. Open the seawater cock (1).

2. Disconnect the hose at the seawater cock (1) or

on the outlet side of the sea water ﬁlter (2) (if the

engine is equipped with such a ﬁlter).

3. Place the free end of the hose in a bucket of fresh

water. Fill the system.

IMPORTANT! The impeller will be damaged if

it runs dry.

4. Check that there is nobody close to the propeller

and there is nothing that will get splashed behind

the exhaust outlet.

5. Set the control lever to neutral. Start the engine.

Let the engine run at fast idle for a few minutes.

Stop the engine.

6. Fill the bucket with an anti-freeze mixture (40%

Volvo Penta glycol and 60% fresh water). Collect

the mixture from the system in a suitable contai-

ner.

7. Start the engine and let it idle. Stop the engine

just before the mixture is ﬁnished.

Repeat as necessary until the entire system has

been ﬂushed with the mixture.

8. Reconnect the hose.

This mixture prevents corrosion and protects against

freezing. It must be left in the seawater system

throughout the laying-up period. Drain the mixture

just before the boat is launched.

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Volvo D2 Series Manual do Operador Página 47