Coolant, Draining
WARNING!
Stop the engine and let it cool before starting work on
the cooling system. Hot fluids and hot surfaces can
cause burns.
WARNING!
Glycol is poisonous (dangerous to ingest). Collect the
old coolant and hand it to a re-cycling station for
disposal.
1 Remove the filler cap from the expansion tank.
2 Connect a suitable hose to each drain point, refer
to section ”Drain points”. Open the drains and allow
the coolant to drain off into a suitable vessel.
IMPORTANT!
Check that all coolant really does drain out. Deposits
may need to be cleared away, inside the drain
plug(s)/tap(s).
3 Drain all other systems connected to the freshwater
system, e.g. heater, water heater, etc.
4 Close all drains.
Freshwater system, Flushing
The cooling system should be flushed when the
coolant is changed, to avoid loss of cooling
performance due to deposits in the cooling system.
1 Drain the coolant, please refer to section
2 Put a hose into the filling hole in the heat exchanger
and flush with fresh water.
3 Flush until the water which runs out of the drain
points is clean.
4 Close all drain points when all coolant has run out.
5 Fill up with coolant, please refer to section
Level, Checking and Topping Up, page 81
.
Maintenance
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