Man L23/30DF, Project Manual

Page: 211 / 392

Compressed air system
Figure 1: Diagram for 10 bar compressed air system (for guidance only, please see the plant specific engine diagram)
Air supply!
Air supply must not be interrupted when engine
is running
Pipe description
Pipe description
K1 Compressed air inlet DN 50
Table 1: Flange connections are standard according to DIN 2501
General
The compressed air system on the engine consists
of a starting system, starting control system and
safety system. Further, the system supplies air to
the jet system and the stop cylinders on each fuel
injection pump. On 8 and 9 cylinder engines air is
supplied to the oil mist detector through a reduction
valve.
The compressed air is supplied from the starting air
receivers (30 bar) through a reduction station,
where from compressed air at 10 bar is supplied to
the engine. The reduction station should be located
as near the starting air receiver as possible.
To avoid dirt particles in the internal system, a
strainer equipped with a drain valve is mounted in
the inlet line to the engine.
Starting system
The engine is started by means of a built-on air
starter, which is a turbine motor with gear box,
safety clutch and drive shaft with pinion. Further,
there is a main starting valve.
Control system
The air starter is activated electrically with a pneu-
matic 3/2-way solenoid valve. The valve can be
activated manually from the starting box on the
engine, and it can be arranged for remote control,
manual or automatic.
MAN Diesel & Turbo
3700205-5.1
Page 1 (2)
Compressed air system
B 14 00 0
L27/38S, L27/38
2015.11.09 - Tier II, Stationary, Low pressure, Standard