Siemens NXAIR M Operating Instructions Manual page 247

Press the soft lab bottle of the test unit carefully and observe the manometer indication (1).
In the indication range from 8 to 12, the overpressure monitor must trip.
Fig. 406: Overpressure function test
Overpressure monitor trips in the indication range from 8 to 12:
Push the detachment ring again, and pull the test tube out of the tube connector.
Insert the tube to the compartment into the tube connector as far as it will go.
Perform the function test of the other overpressure monitors in the same way.
After the function test of all overpressure monitors, close the door to the low-voltage
compartment.

The function test of the overpressure monitor is completed.
Overpressure monitor does not trip in the indication range from 8 to 12:
Document the tripping value and repeat the test. If this overpressure monitor does not trip in
the indication range from 8 to 12 again, mark the overpressure monitor.
Push the detachment ring again, and pull the test tube out of the tube connector.
Insert the tube to the compartment into the tube connector as far as it will go.
Inform the regional Siemens representative and ask for support and advice.
139-2021.9 / 07 NXAIR M
Service information
247