Dräger PSS BG 4 plus

Testing
Checking the Residual Pressure Warning
1 Close the cylinder valve.
2 Watch the Sentinel.
A warning should be generated at approx. 700 psi/
55 bar.
The acoustic alarm sounds intermittently and the red LEDs
flash.
3 Unplug the coupling from the test unit and put the sealing
cap on the plug-in coupling.
Checking the Battery Capacity
On activation and deactivation the Sentinel automatically
checks and displays the battery capacity. There are three icons
used to represent the capacity left in the battery:
Symbol "Battery OK"
● Battery does not need to be replaced.
Symbol "Battery warning 1"
On power up a long beep (acoustic alarm) will sound and the
display will show "Battery warning 1" icon. When this icon is
first displayed, it is acceptable to safely use the PSS BG 4 for
up to 4 hours (under standard Sentinel operation).
When the first limit is reached, replace the battery
immediately.
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Draeger Training 11/16 rev 1