PROCEDURE
1 To set the shut-off valve for starting air (shut-off valve) to the initial test position, do Step
1.1 to Step 1.3:
1.1 Make sure that the stop valves 930-V03 and 930-V04 are closed.
1.2 Use the hand-wheel (001, Figure 9-5) to move the shut-off valve in the position
CLOSED.
1.3 Make sure that the turning gear is disengaged.
2 To do a test the shut-off valve, do Step 2.1 to Step 2.8:
2.1 Close the drain valves 30-8605_E0_6/7 on the supply pipe.
2.2 Slowly open the stop valves 930-V03 and 930-V04.
2.3 NOTE: If air flows out, tighten the screw plug (011). The shut off valve is not
airtight.
Slowly loosen the screw plug (011). Make sure that no air flows out.
2.4 Remove the screw plug (011).
2.5 Slowly turn the hand-wheel (001) to move the shut-off valve to the position
OPEN.
2.6 Make sure that air flows from the bore of the screw plug (011). When air flows,
the manual function of the shut-off valve operates correctly.
2.7 Use the hand-wheel (001) to move the shut-off valve to the position AUTOMAT.
Make sure that the lever (002) engages with the groove in the spindle.
2.8 Make sure that no air flows from the bore of the screw plug (011). When no air
flows, the automatic function of the shut-off valves operates correctly.
3 To set the starting air shut-off valve into automatic mode, do Step 3.1 to Step 3.5:
3.1 Make sure that the shut-off valve is in the position AUTOMAT.
3.2 NOTE: When you do the step below, air will flow through the pipe. This
activates the control valve (012), which shows that the valve body and
valve operate.
Open the ball valve 35-8353_E0_2 to activate the control valve (012). The
shutoff valve opens automatically.
3.3 Make sure that air flows from the bore of the screw plug (011).
3.4 Close the ball valve 35-8353_E0_2.
3.5 Make sure that no air flows from the bore of the screw plug (011).
4 To complete the test procedure, do Step 4.1 to Step 4.3:
4.1 Use the hand-wheel (001) to move the shut-off valve to the position CLOSED.
4.2 Install the screw plug (011).
4.3 Attach the pipes (004, 007) to the shut-off valve.
X72DF
AA00-4325-00AAA-320A-A
Maintenance Manual Shut-off valve for starting air - do a test of the operation
Winterthur Gas & Diesel Ltd.
- 527 - Issue 002 2020-10
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