MAN B&W L28/32H, Manual

Page: 117 / 218

Engine
No. N
Engine
No. 2
Engine
No. 1
Starting air
bottle
Oil and water
separator
Drain to bilge
Air compressors
K1 K1 K1
MAN B&W,
Holeby supply
Fig. 1. Diagram for Compressed Air System.
Design of External System
The external compressed air system should be
common for both propulsion engines and GenSet
engine.
Separate tanks shall only be installed in case of
turbine vessels, or if the GenSets in engined vessels
are installed far away from the propulsion plant.
The design of the air system for the actual plant must
be according to the rules of the relevant classification
society.
For the engines' internal compressed air system,
please see B 14 00 0 "Internal Compressed Air
System".
An oil and water separator should be mounted in the
line between the compressor and the air receivers,
and the separator should be equipped with auto-
matic drain facilities.
Each engine needs only one connection for com-
pressed air, see the internal diagram.
Installation
In order to protect the engine's starting and control
equipment against condensation water the following
should be observed:
- The air receiver(s) should always be installed
with good drainage facilities. Receiver(s) ar-
ranged in horizontal position must be installed
with a slope downwards of min. 3 - 5 deg.
- Pipes and components should always be
treated with rust inhibitors.
- The starting air pipes should be mounted with
a slope towards the receivers, preventing pos-
sible condensed water from running into the
compressors.
- Drain valves should be mounted at lowest
position of the starting air pipes.
95.09
Compressed Air System
General
B 14 00 0
1624476-1.1
Page 1 (1)