3.3
For an engine with an internal circulation cooling water system (with circulation
pump and temperature control valve, refer to
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 8-3
Cooling water system with circulation
02
05
001
002
003
Legend
001
Temperature control valve
02
Connection 02 (cylinder liner cooling water inlet)
002
Circulation pump
05
Connection 05 (cylinder cooling water drain
outlet)
003
Shut-off valve
3.3.1
Close the shut-off valves (003) in the cylinder liner supply pipes of the first
half of cylinders (for example cylinder 1 to 6 for a 12 cylinder engine).
NOTE:
This increases the pressure and thus the flow rate to the other
cylinders.
3.3.2
Let the cooling water flow through the other cylinder liners for
approximately ten minutes.
3.3.3
Open the shut-off valves (003) in the cylinder liner supply pipes of the first
half of cylinders.
3.3.4
again for the second half of cylinders (for
example cylinder 7 to 12 for a 12 cylinder engine).
3.4
Set all valves to their correct positions for operation.
3.5
Release the unwanted air in the cooling water pipes and the scavenge air coolers
at the related vent valves.
3.5.1
Carefully open the first vent valve.
3.5.2
After water that has no air flows out, close the vent valve.
3.5.3
again with the other vent valves.
3.6
Make sure that the values that follow are in the permitted range:
•
Pressure in the supply pipe of the cylinder cooling water
•
Temperature in the supply pipe of the cylinder cooling water
•
Pressure in the cooling water supply pipe of the scavenge air cooler (SAC)
•
Temperature in the cooling water supply pipe of the SAC.
X72-B
AA00-0000-00AAA-121A-A
Operation Manual
Prepare the engine before start
Winterthur Gas & Diesel Ltd.
- 310 -
Issue 003 2021-12
Содержание X72-B
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