WÄRTSILÄ Vasa R22, Instruction Manual

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actuated by the solenoid valve (2), which is energized from the
speed monitoring system.
The pneumatic overspeed trip devices (13), described in detail
in chapter 22., section 22.6, are controlled by the valve (14) which
is actuated by the solenoid valve (4) on an electric signal from the
speed monitoring system, whereby the engine stops.
The push button of the solenoid valve is able to function as a local
stop.
Pneumatic system
The thermostat valves (16), described in detail in chapter 19.,
are actuated by the solenoid valve when the engine runs idle or
at partial load. The solenoid is controlled by a switch in the charge
air circuit. Set point, see chapter 19., Temperature control system.
21.6.2 Maintenance
The system is built up of high class components. Usually it
requires no other maintenance than check of function, cleaning
of the air filter (12) and draining of condensated water from the
vessel (6) using the draining valve (7).
16 15
14
5
17
18
6 7
8
1 2
3 4
+
-
+
-
+
-
+
-
13
12 11 10
1. Solenoid valve
2. Solenoid valve
3. Solenoid valve
4. Solenoid valve
5. Pressure control valve
6. Vessel
7. Draining valve
8. Main starting valve
10. Draining valve
11. Non-return valve
12. Filter
13. Pneumatic overspeed
trip device
14. Valve
15. Starting fuel limiter
16. Thermostat valve
17. Valve
18. Valve
9
9. Valve
Fig 21-3
2221549428
21 Starting Air System 22-9601
21-6 VASA 22