Operation
0810−1/A1
Winterthur Gas & Diesel Ltd.
1/ 4
Problems during Engine Start and Stop
1. Problems during Engine Start
For the names and part code numbers, see 4003−2 Control Diagram.
Problem Possible Cause Procedure
The engine does not turn
during the start sequence.
The shut-off valves on the starting air bottles
are closed.
Open the shut-off valves.
The starting air pressure is too low Fill the air bottles.
The oil pressure, water pressure, or air
pressure for the air spring is too low. The
pressure switches have activated a
SHUTDOWN signal.
Reset SHUTDOWN.
The air spring did not close the exhaust valve
(i.e. the upper housing is filled with oil because
the lubricating oil pump and servo oil service
pump started too early or stopped too late).
Set to off the lubricating oil
pump and servo oil service
pump. Wait (approximately 30
minutes) until the oil flows out
of the upper housing through
the orifice.
Start the oil pumps only if all
the exhaust valves are
closed.
Engine will not start from the
control stand in the control
room.
The control stand has no effect. Push the related button for
mode transfer, or to get
control.
The remote control system (RCS) and / or
telegraph system has a fault.
Do a check of the RCS or
speak to the RCS supplier.
The RCS shows a start interlock. Do a check of the indication
of starting interlock in RCS
(turning gear, shut-down,
auxiliary blower), release
interlock.
No signal between the RCS and the
WECS−9520.
Do a check of the plugs and
CAN−BUS, for loose or
broken cables.
Engine will not start from the
control stand at the engine.
The control stand has no effect. Push the related button for
mode transfer, or to get
control.
The turning gear is engaged, the blocking
valve 2.13 prevents the flow of control air to
valve unit E.
Disengage the turning gear.
Control valve 2.05 to shut-off valve for starting
air cannot move, or does not open fully.
Clean the control valve 2.05.
The solenoid valves ZV7013C and ZV7014C
in valve unit E become defective.
Clean or replace valves. Do a
check of the wiring.
The electrical connection(s) are disconnected
from the solenoid valve(s) in valve unit E.
Connect the electrical
connection(s).
The starting air shut-off valve 2.03 is in the
position CLOSED.
Turn the shut-off valve 2.03 to
the position AUTOMAT.
Operation Problems
2014
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