3
Prepare the cooling water system for operation.
3.1
For an engine with a bypass cooling water system (refer to
), and when
the liner wall temperature is between 60°C and 90°C (for example when the engine
is pre-heated or after engine full stop for a sufficient period), release the unwanted
air with a high flow rate as follows:
Fig 8-1
Cooling water system with bypass cooling
002
02
05
01
003
001
Legend
001
Optional vent valve
01
Connection 01 (cylinder cooling water inlet)
002
Shut-off valve
02
Connection 02 (cylinder liner CW inlet)
003
Shut-off valve
05
Connection 05 (cylinder CW drain outlet)
3.1.1
Close all shut-off valves (002) in the cylinder cover supply pipes (engine
connection 01).
NOTE:
This increases the pressure and thus the flow rate at the engine
connection 02.
3.1.2
Let the cooling water flow through the cylinder liners for approximately ten
minutes.
3.1.3
Close the shut-off valves (003) in the cylinder liner supply pipes of the first
half of cylinders (for example cylinder 1 to 3 for a 5 or 6 cylinder engine).
NOTE:
This increases again the pressure and thus the flow rate to the
other cylinders.
3.1.4
Let the cooling water flow through the other cylinder liners for
approximately ten minutes.
3.1.5
Open the shut-off valves (003) in the cylinder liner supply pipes of the first
half of cylinders.
3.1.6
again for the second half of cylinders (for
example for cylinder 4 and 5 or for cylinder 4 to 6).
3.1.7
Open all shut-off valves (002) in the cylinder cover supply pipes.
3.1.8
If there is unwanted air in the cooling water and the optional vent valve
(001) is installed, do as follows:
3.1.8.1
Put an applicable container under the vent valve (001).
3.1.8.2
Carefully open the vent valve (001) until only cooling water flows
out of the vent valve (001).
3.1.8.3
Close the vent valve (001).
3.1.8.4
Discard the hot cooling water correctly.
X72-B
AA00-0000-00AAA-121A-A
Operation Manual
Prepare the engine before start
Winterthur Gas & Diesel Ltd.
- 308 -
Issue 003 2021-12
