Operation
0800−1/A1
Winterthur Gas & Diesel Ltd.
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General
1. General
If the operation and maintenance instructions are obeyed, problems during operation
can be prevented.
If a fault occurs, do not search randomly for the cause. Use a sequence to find
possible causes. This applies specially to problems during engine start and engine
stop.
The possible causes of the faults shown in paragraph 1.1 to paragraph 1.4 are given
in their related chapters.
1.1 Problems during Engine Start and Stop
See the list below:
D Engine does not turn during the start sequence
D Engine moves back at start or does not get speed
D Engine turns with air during the start but gets no fuel
D Engine does not fire during the start
D A cylinder does not fire, or does not fire correctly during the start
D Engine fires violently during the start
D Engine cannot be stopped.
For more data, see 0810−1
.
1.2 Irregular Functions during Operation
At the same load indication compared to results or with data in the shop trial
documents:
D Scavenge air pressure decreases
D Scavenge air pressure increases
D Scavenge air pressure is too high
D Exhaust temperature upstream of the turbocharger increases
D Exhaust temperature of one cylinder increases
D Exhaust temperature of one cylinder decreases
D Firing pressure of all cylinders decreases
D Engine speed decreases
D Smoke comes out of the exhaust
D Engine operates irregularly or misfires at times (one cylinder or all cylinders)
D Undemanded engine stop
D Irregular functions in the cylinder cooling water system
D Crosshead bearing oil pressure decreases to main bearing oil pressure
D Cylinder lubrication becomes defective
D Problem with the exhaust valve
D Surging of turbocharger(s)
D Oil mist detector gives an alarm.
D Engine thermally overloaded.
For more data, see 0820−1.
Problems during Operation
2014
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