68
DRAINING THE COOLANT CIRCUIT
1. Stop the engine and remove the key from the panel.
2. Put a container under the drain plug (
B
) to collect
coolant. Unscrew the plug and remove the filler cap
on top.
3. Drain off all coolant. Empty the recovery container as
well as the hoses.
4.
Insert a hose into the heat exchanger filler port. Rinse
with fresh water until water which flows from the
drain port is clean.
5.
Reinstall the drain plug, secure it and fill with new
coolant as explained on next paragraph..
COOLANT - FILLING
Mix the anti-freeze with water in a clean container before
filling the heat exchanger. The coolant must be totally
free from dust. Fill the exchanger slowly not to introduce
air into the coolant system.
Refer to the chapter
TECHNICAL DATA
(Specifications)
to know the coolant capacity of the heat exchanger.
For Keel Cooling system or when using a water boiler,
the coolant capacity must be adapted according to the
pipes length and the tank capacity.
S08
MAINTENANCE
TO FILL THE COOLANT SYSTEM:
1. Check that the drain plug
(B)
is properly tightened.
2.
Add coolant through the heat exchanger filler port
on top (
A
). Stop filling when coolant is reaching the
bottom of the filler cap lip.
3. Close and secure cap.
4. Start the engine and let it operate few minutes at
idle. Stop the engine, wait few minutes and check
the coolant level in the heat exchanger and in the
expansion tank. Top up if necessary.
CAUTION !
If a boiler is connected to the engine, follow the filling
procedure given by the manufacturer of the boiler. If
the boiler is above the engine in the boat, first fill the
heat exchanger, the boiler, and top up with coolant the
recovery tank located above the boiler.
Make sure not to overfill the heat exchanger when filling
with coolant. If too much coolant has been added, drain
part of the coolant.
Summary of Contents for T6.280
Page 1: ...NANNI MARINE ENGINE OPERATOR MANUAL DGBXXT09010 ENGINE 6 420TDI T6 280 T6 300 Z6 300...
Page 2: ......
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Page 39: ...39 S06 COMPONENTS ENGINES VIEWS 6 420TDI T6 280 T6 300...
Page 40: ...40 S06 COMPONENTS ENGINE VIEW Z6 300 1...
Page 77: ...77 NOTES...
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