Section 4
Preuse Checkout
H. Set the absorber’s manual/automatic selector valve to BAG.
I. Turn the APL valve control knob fully counterclockwise.
J. Verify that the suction waste gas disposal system is active.
K. Adjust the scavenger needle valve to a flowmeter
indication between the two white lines.
L. Close all flow control valves on the anesthesia system.
M. Occlude the absorber breathing bag terminal and observe
the breathing pressure gauge on the absorber. The gauge
should indicate only a negligible negative pressure (no
lower than -0.5 cmH
2
O).
To test for positive pressure relief:
N. Perform steps A through E.
O. If the system is equipped with a PEEP valve, turn the
PEEP valve control knob fully counterclockwise to its
lowest setting.
P. Adjust the scavenger needle valve to a completely closed
position by turning it fully clockwise.
Q. Open the oxygen flow control valve to a flow of 10 l/min
and occlude the absorber breathing bag terminal.
R. The flow of oxygen must now exit through the relief ports
located on top of the canister. The absorber system’s
breathing pressure gauge must indicate a pressure less
than5cmH
2
O.
S. After the test, adjust the scavenger needle valve to a
flowmeter indication halfway between the two white lines.
To test the scavenger interface for passive systems:
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.
4-5
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