Dräger PSS BG 4 plus

PSS BG 4 Service Manual
Draeger Safety, Inc.
Checking the Bypass Valve
1 Set “Leak test”.
on the rear:
2 Press red button of the bypass valve slightly.
– Oxygen must be heard to flow into the circuit
(flow noise).
3 The breathing bag inflates.
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Draeger Training 11/16 rev 1