Operation
4002−2/A1
Winterthur Gas & Diesel Ltd.
27/ 37
Item Function Effect / Procedure
8 Approximate CA Shows the set approximate crank angle (CA) value (see
also item 7).
9 CA synchronized (No ADA
needed)
Shows the crank angle synchronization status, i.e. if the
angle determination algorithm (ADA) process is
necessary/on.
When the CA is synchronized, a green indicator shows.
When the CA is not synchronized, a red indicator shows.
3.13.1 ADA Start from the LDU-20 Local Control Panel or LDU-20 ECR
WARNING
Injury Hazard: After an air run, the crankshaft can turn suddenly
when the pressurized air in the cylinder releases. There is a risk of
death, serious injury or damage to components. Before you do
maintenance on the engine, engage the turning gear, or start the
Crank Angle Determination Algorithm (ADA) a second time:
1) Make sure that there is no pressurized air in the cylinder and
the starting air pipes.
2) Make sure that you open the relief valves on all cylinder covers
to release the pressure.
If you manually start the crank angel determination algorithm (ADA) from the LDU-20
Local Control Panel or the LDU-20 ECR do the step 1) and step 2):
Note: It is possible to do the ADA procedure with open or closed indicator
valves.
1) On the LDU-20, select the USER PARAMETER page (see paragraph 3.10).
2) Push the AIR RUN button until the engine status changes from ADA to AIR RUN.
Note: It is also satisfactory if each cylinder was activated and has moved
automatically at the ADA procedure (independently from the direction
in which the engine turns).
If the ADA procedure is not successful, i.e. the absolute crank angle position could
not be found, do step 3) and step 4):
3) Open the indicator valves on all cylinders to release the compressed air.
4) Do step 1) to step 2) above again.
Local Control Panel / Local Display Unit (LDU−20)
2015-12
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