Calibration for vacuum pressure measurement

Release lock nut on controller (1).

Press setting with measurement.

• Determine ambient pressure
• Seal stop cock (2) in direction of arrow
• Set controller (1) to 200 ± 10 mbar  below ambient pressure (e.g. 980 - 200 = 780 mbar).

Open stop cock (2) again.

Wastegate valve closes.

Fig 1: Sealing Stop Cock

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Initial position (1) of wastegate linkage with preset vacuum pressure.

Wastegate valve virtually closed.

Fig 2: Identifying Initial Position Of Wastegate Linkage With Preset Vacuum Pressure

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