Bukh D4 - Seawater System, Draining

WARNING!
Risk of water entry. Water will flow into the boat if any
hose,
plug etc. located below the waterline is removed
when the boat is in the water. Always close the sea
cocks. If the boat does not have sea cocks the water
flow must be blocked in a safe manner. If this is not
possible, the boat must be drawn up on land before
work starts.
Seawater System, Draining
WARNING!
Risk of water entry. Close the seawater cocks before
doing any work on the seawater system.
To prevent frost damage, the raw water system must
be
drained during cold weather if there is a risk for frost.
An alternative to draining is to keep the engine room
warm using an approved heater fan.
Draining:
1 Close the sea cock where fitted.
2 Open the drain stop cock (1) by unscrewing it
carefully.
3 Drain the coolant into a container. Screw in the stop
cock by hand.
4 Move the hose on the stop cock (1) and connect to
stop cock (2).
Open stop cock (2) and drain all coolant. Close the
stop cock.
5 Move the hose to stop cock (3).
Open stop cock (3) and drain all coolant. Close the
stop cock.
6 Refit the drain hose to stop cock (1).
7 Open the sea cock where fitted.
Maintenance
47708085 11-2016 © Bukh 99