Vetus M4.55 Operation Manual page 22

3 Use
C : 6.5 litres
oolant quantity
(1 gal - 3.4 pt UK) (1 gal - 5.7 pt US)
(3/8")
VD01129 VD00158
4 Filling the cooling system
Remove the cap of the filler neck on the
top of the heat exchanger housing.
Remove the bolt from the upper side of the
thermostat cover, so that air can escape
from the cooling system.
Fill the cooling system.
Use a mixture of 40% antifreeze (ethylene-
glycol based) and 60% tap water or use a
special coolant.
For specifications see page 87.
20
VD01130
The level of the coolant must be approx.
1 cm (3/8") below the lower edge of the
filler neck.
Bleeding will take place automatically dur-
ing filling!
Replace the filler cap.
After the engine has run for the first time
and has reached operating temperature
and has cooled down again to ambient
temperature, check the coolant level in the
heat exchanger housing.
First commissioning
n
ote
W
ater heater
If a water heater is connected to the
engine and this heater is positioned
above the upper side of the engine
then bleeding of the heater will not take
place automatically!
Follow filling instructions on p. 57.
If necessary, add coolant.
C
aution
Never fill the cooling system with sea
water or brackish water.