CARE AND MAINTENANCE
MSA
16
AutoMaXX - series
With medium pressure
(1) Switch off AutoMaXX with red operating button (only positive pressure lung
governed demand valve).
(2) Connect medium pressure line to a pressure reducer and open cylinder
valve.
(3) Connect AutoMaXX to test device.
For positive pressure lung governed demand valve use a connecting
adapter.
(4) Observe pressure change.
The pressure change must not exceed 1 mbar in 60 seconds.
4.7. Checking the closing pressure (only positive pressure lung
governed demand valve)
(1) Switch off AutoMaXX with red operating button and connect to medium
pressure.
(2) Connect to test equipment directly or via test adapter line.
Close all lines of the test equipment.
Warning!
Use a test adapter line to prevent damage to test equipment not
protected against positive pressure. Close the connection between
AutoMaXX and test equipment.
(3) Switch on AutoMaXX by pushing the flush button.
(4) If used, open test adapter line. Release a volume flow of 5 l/min through test
equipment vent.
(5) Close vent, thereby the static pressure must be less than 3.9 mbar.
4.8. Checking the opening pressure (only negative pressure lung
governed demand valve)
(1) Connect AutoMaXX to the medium pressure.
(2) Connect AutoMaXX to the test equipment.
(3) Release a volume flow of 10 l/min through test equipment vent.
(4) Close vent.
(5) Slowly generate increasing negative pressure and observe opening
pressure.
The opening pressure must not exceed -3.5 mbar (negative pressure).
