Operation
4003−1/A1
Winterthur Gas & Diesel Ltd.
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4.12.2 Starting Air Shut-off Valve
1) Remove the shuttle valve 115HA from valve unit E. Make sure that the three
O-rings stay in position.
2) On the WECS−9520 manual control panel, select LOCAL MANUAL CONTROL
(see 4618−1) to get control.
3) Push the button AIR RUN.
4) Make sure that the two solenoid valves ZV7013C and ZV7014C are energized
(use a screwdriver or a magnet tester).
5) Make sure that control air comes out of each pipe from the solenoid valves
ZV7013C and ZV7014C in valve unit E (see 4003−2 Control Diagram).
6) Make sure that:
D The shut-off valve for starting air 2.03 is manually closed.
D There are no active shut-down signals released.
D The turning gear is disengaged.
D The auxiliary blowers are set to off (AUX. BLOWER STOP button).
7) On the WECS−9520 manual control panel, select START AHEAD.
8) Make sure that the indications No Aux. Blower Running and Start Interlock are
shown on the WECS−9520 manual control panel. No start command is released.
9) Select START ASTERN.
10) Make sure that the indications No Aux. Blower Running and Start Interlock are
shown on the WECS−9520 manual control panel. No start command is released.
11) Select AUX. BLOWER PRESEL.
12) Do the tests for START AHEAD and START ASTERN as given above.
The auxiliary blowers start and control air comes out of each pipe from the solenoid
valves ZV7013C and ZV7014C in valve unit E.
13) Make sure that the O-rings are in position in the shuttle valve 115HA.
14) Install the shuttle valve 115HA to valve unit E.
4.12.3 Turning Gear Interlocks
1) Make sure that the turning gear is engaged.
2) Make sure that the pressure switch PS5017C (set−point 2 bar) and the switch
ZS5016C are not activated (open contact).
3) Make sure that the indication Turning Gear Engaged is shown on each
WECS−9520 manual control panel (i.e. on the ECR console and the local
maneuvering stand.
4) Make sure that the engine is ready for service, the shut-off valve for starting
air 2.03 is closed and the starting air supply pipes have no pressure.
5) On the WECS−9520 manual control panel, push the button LOCAL MANUAL
CONTROL (see 4618−1 paragraph 2) to get control.
6) Push the button START AHEAD.
7) Make sure that Start Interlock is shown on each WECS−9520 manual control
panel. No start command is released.
8) Do the test from the ECR manual control panel and the remote control.
9) Disengage the turning gear.
10) Make sure that Start Interlock disappears from each WECS−9520 manual control
panel. The Start command is cancelled in the remote control.
2017−08
Engine Control
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