Dräger Narkomed 2B Operator's Instruction Manual page 56

Section 4
Preuse Checkout
Scavenger System
4-4
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
*8. 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.
D. Check for moisture accumulation in the breathing and
scavenger hoses. Remove any moisture found.
E. Verify the safe performance of the open reservoir
scavenging system. With the scavenging system properly
installed and operating, test for positive and negative
pressure relief.
To test for negative pressure relief:
F. Connect a vacuum hose to the DISS threaded terminal on
the left-hand side of the scavenger (or attach a wall
suction hose onto the adapter's hose-barb fitting).
G. Short-circuit the absorber's inspiratory and expiratory
valves with a 22 mm breathing hose.
O in 30 seconds.
2
O).
2
O, begin
2