Vetus M4.55 Operation Manual page 59

4 Maintenance
A
VD00626
54 Filling coolant system if a water
heater is connected
A) The point of the water heater is
highest
situated at a LOWER level than the expan-
sion tank for the ship's engine. The water
heater will be filled and bled automati-
cally during filling of the cooling system.
B
VD00627
n
ote
B) The point of the water heater
highest
is situated at a
higher
expansion tank for the ship's engine. The
water heater will be filled and bled
not
automatically during filling of the cooling
system.
Fill the cooling system via the extra expan-
level than the sion tank.
Open the valve during the filling and bleed-
ing of the system.
Close the valve again once the system is
filled.
Coolant replacement
Every 1000 operating hours.
57