Dräger PSS BG 4 plus

"High Pressure Leak Test"
Leak Test (optional)
"Check Battery Life"
"Low Pressure Warning"
Positive Pressure
<1.4 mbar
"Inhalation Valve"
Positive Pressure
Crimp Exhalation Hose
>10 mbar
"Exhalation Valve"
Negative Pressure
Crimp Inhalation Hose
>-10 mbar
"Relief Valve"
Positive Pressure
Pump to Activate
2-5 mbar
"Drain Valve"
Positive Pressure
Pump to fill system
Insert tappet on relief
>10 - <25 mbar
"Leak Test"
Leak Test
Drain Pressure to 7.5
mbar
Press OK
<1 mbar 60 sec
"Constant Dosage"
L/Min
Fill System to 8mbar
1.5 - 1.9 L/Min
"Bypass Function"
Leak Test
Short Press Red Bypass
Gas Flow
"Minimum Valve"
Negative Pressure
Pump to Remove
Pressure Min Valve
Activates
.1 - 2.5 mbar
"Residual Warning"
Leak Test
Close Cylinder
Alarm Sound
@ 700 psi
Flow Chart - Testing a BG4 - Training Reference Only
Page 35
Draeger Training 11/16 rev 1