Dräger Narkomed 2B Operator's Instruction Manual page 48

Section 3
Daily Checkout
Scavenger System
3-8
B. Turn the SYSTEM POWER switch to the STANDBY posi-
tion.
C. Turn the vaporizers to 0% concentration.
D. Interconnect the 22 mm ports of the inspiratory and
expiratory valves with a 22 mm breathing hose.
E. Set the manual/automatic selector valve to BAG.
F. Close the APL valve by turning the knob fully clockwise to
its stop position.
G. Check that the breathing pressure gauge is on 0.
H. Attach the supplied test terminal to the breathing bag
mount.
I. Connect a sphygmomanometer squeeze bulb (available
from North American Dräger) to the hose barb on the test
terminal.
J. Pump the squeeze bulb by hand until the breathing
system pressure gauge indicates pressure of at least 50
cmH O (not to exceed 80 cmH
2
K. Observe the pressure drop at the breathing system
pressure gauge. When the pressure is at 50 cmH
counting seconds. The pressure must not drop more than
20 cmH
*25. Verify the performance of the scavenger system.
To test the open reservoir scavenger system:
A. Make sure a 19 mm scavenger hose is connected between
the ventilator relief valve and the scavenger interface.
B. Make sure a 19 mm scavenger hose is connected between
the APL valve on the absorber and the 19 mm hose
terminal on the back of the absorber pole.
C. Make sure a 19 mm scavenger hose is connected between
the bottom of the absorber pole and the scavenger
interface.
O in 30 seconds.
2
O).
2
O, begin
2