Dräger PSS BG 4 plus - Page 57

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.
Page 57
Draeger Training 11/16 rev 1