Volvo D2 Series Betreibershandbuch Seite 48

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46
Maintenance: Seawater system
130S / 150S
Seawater system. Draining
If it is not possible to keep the engine compartment
free of frost, the seawater system must be drained to
prevent freezing damage.
Note that all the seawater must be drained. The type
of drainage must be adapted to the way in which the
engine is installed and any additional equipment that
is connected, for example sea water filter (2), vacuum
valve (8), silencer (7) etc.
WARNING! Risk of water penetration. Close the
sea cock before starting work.
IMPORTANT! If the boat is laid-up for winter or
the off season, the seawater system must be
instead flushed clean and protect against corro-
sion according to the instructions in the previous
section.
Draining:
1. Close the seawater cock (1).
2. Remove the cover and sealing plate on the sea
water filter (2).
3. Remove the cover (3) from the seawater pump.
Let the water run out.
4. Open the drain cock (4) on the rear end of the
heat exchanger and drain the water off.
D2-75:
Open the drain cock on the charge air cooler (9)
draining the water.
5. Disconnect the hoses where indicated by the ar-
rows (5). Drain the hoses.
6. Open the drain plug (6) on the reverse gear oil
cooler and drain the water off. Close the drain
plug.
7. Drain the silencer (7), the exhaust system and any
other additional equipment connected to the sea-
water and exhaust systems.
8. Reinstall all hoses, the cover on the seawater
pump and the cover and sealing plate on the
seawater filter. Close the drain cock on the heat
exchanger.
D2-75:
Close the draincock on the charge air cooler.
9. Opened the seawater cock the next time the boat
is used.
WARNING! Check that there is no leakage in
the seawater system.
6
MS25
6
HS25
3
7
5
2
1
8
5
4
9
MS25 / HS25
7
2
1
3
8
6
5
4
9
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