Maintenance2745−1/A1 RT-flex50-D
Wärtsilä Switzerland Ltd
2/ 2
2. Checking blow-off pressure
For checking relief valve 2 use test bench 94272 and diesel oil or a thin-bodied oil
as test medium.
Remark: Pay attention to the manufacturer’s detailed instructions and working
specifications of the test bench.
If necessary, a relief valve must be replaced completely and set according to the
following table:
Firing pressure
[bar]
Blow-off pressure
[bar]
140−143 200
144−147 205
148−151 210
152−155 220
156−160 225
B
013.484/05
013.486/05
94935
94934a
94272
94931 EV
017.670/08
10
94272c
2
3. Fitting the relief valve
⇒ Apply Never-Seez NSBT-8 to the thread of relief valve 2 and fit it with new gas-
ket 11.
⇒ Always properly close indicator valve 3 so that no gas escapes and then
screw on its cap.
Remark: If indicator valves leak for a long period the seats will become damaged.
Early replacement of a leaking indicator valve will allow easy repair. All threads and
internal parts must also be smeared with Never-Seez NSBT-8.
Relief Valve: Checking Blow-off Pressure
2010
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