WÄRTSILÄ 46F Series, Product Manual

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Pipe connections
Control air to by-pass/waste-gate valve 311
Air supply for flushing 316
Instrument air inlet 320
8.3.1 Starting air compressor unit (3N02)
At least two starting air compressors must be installed. It is recommended that the compressors
are capable of filling the starting air vessel from minimum (1.8 MPa) to maximum pressure in
15...30 minutes. For exact determination of the minimum capacity, the rules of the classification
societies must be followed.
8.3.2 Oil and water separator (3S01)
An oil and water separator should always be installed in the pipe between the compressor
and the air vessel. Depending on the operation conditions of the installation, an oil and water
separator may be needed in the pipe between the air vessel and the engine.
8.3.3 Starting air vessel (3T01)
The starting air vessels should be dimensioned for a nominal pressure of 3 MPa.
The number and the capacity of the air vessels for propulsion engines depend on the
requirements of the classification societies and the type of installation.
It is recommended to use a minimum air pressure of 1.8 MPa, when calculating the required
volume of the vessels.
The starting air vessels are to be equipped with at least a manual valve for condensate drain.
If the air vessels are mounted horizontally, there must be an inclination of 3...5° towards the
drain valve to ensure efficient draining.
Fig 8-4 Starting air vessel
Weight
[kg]
Dimensions [mm] Size
[Litres]
D L3
1)
L2
1)
L1
450 480 133 243 3204 500
810 650 133 255 3560 1000
980 800 133 255 2930 1250
1150 800 133 255 3460 1500
1310 800 133 255 4000 1750
1490 800 133 255 4610 2000
1) Dimensions are approximate.
DAAB605814 8-7
8. Compressed Air System Wärtsilä 46F Product Guide