Coolant Replacement - Vetus M Series Operation Manual

6 Maintenance

62 Coolant replacement

The coolant has to be replaced every 1000 op-
erating hours or at least once every two years.
N.B. Replacing the coolant may also be neces-
sary as part of the winter storage procedure;
in case that the coolant present in the cooling
system offers insufficient protection for the
winter.
D
anger
Be aware of the risk of skin burning during
draining the hot coolant! Used coolant must
be collected in a container for proper disposal
according to laws and regulations.
80
n
ote
Keel cooler
How the cooling system in engines with
keel cooling should be drained depends
on the installation of the keel cooler.
Refer to the keel cooler manufacturer's in-
structions for this.
Check using a coolant hydrometer wheth-
er the coolant is providing sufficient pro-
tection against freezing if total draining off
is not possible.
W
arning
Cooling system protective liquids must be
disposed of in accordance with environmen-
tal regulations.
Coolant replacement
Every 1000 operating hours.
1 2
63 Preparation
• Remove the plug (1) and the filler cap (2) to
vent the cooling system.