Dräger PSS BG 4 plus

Draeger BG4 Iso Training 1/14
BG4 Pneumatic Test w/Approved Test Device
Checks High Pressure Leaks / Dosage Flow
Fig A
Reducer
Medium Pressure
(Yellow Line)
Dosage
(Blue Line)
Minimum
Valve
O2 Cylinder
Flow Meter
LPM
Main Unit
Rocker Arm
Dosage Screw
Switch Box
BY Pass
TEST PROCEDURE
 Connect BG4 Pneumatics
and meters as per Fig A
 Ensure O2 cylinder pressure
of at least 1000 psi and
meters zeroe
d.
 Turn O2 cylinder ON and
read Flow. Should be
between 1.5 and 1.9 lpm
 Leak Check Minimum Valve
,
Reducer and Hoses with leak
detection fluid or water.
 Turn O2 cylinder OFF
 Relieve
Pressure by tapping
Rocker Arm of Minimum
Valve
 Service as required
Hose / Tubing
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Draeger Training 11/16 rev 1