How to adjust the barometer?

Method of adjusting air pressure: 1. The two knobs are synchronized, the first adjustment is as much as the second adjustment, and the barometer needs to be adjusted if something happens;

2. After observing the barometer, record the meters when it stops automatically, adjust the knob according to the required air pressure, and exhaust;

3. Record the number of meters during automatic start-up and automatic shutdown, and then adjust the exhaust to the required working state repeatedly.

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