PSS BG 4 Service Manual
Draeger Safety, Inc.
Checking the Response threshold of the Low
Pressure Warning
NOTE
The function test for low pressure warning can
only be carried out after the Sentinel has been
switched off.
1 Screw the test adapter into the connector of
the test unit RZ 25. Remove the sealing cap
and plug the coupling into the test adapter.
2 Set “positive pressure pumping”.
3 Pump slowly.
4 Watch the pressure gauge:
The low-pressure warning should be activated
when the pressure is lower than 1.4 mbar .
Low Pressure Warning Indication
– Backlight turns on including red LED
– Open cylinder valve icon is shown.
– Alarm bleeps once.
Draeger Training 11/16 rev 1
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