Turn the gas evacuator valve/relief valve knob clockwise to the
(d) Close all flow control valves to their stops.
(e) S-L-O-W-L-Y open the oxygen cylinder valve until it is completely
(f) Open the oxygen flow control valve gradually and establish a 200
cubic centimeters per minute (cc/minute) flow.
(g) Block the Y-connector opening.
(h) Observe the breathing circuit pressure gauge.
(i) Verify that the breathing circuit rises to 35 mm Hg or higher as you
pressurize the apparatus circuit. If the pressure does not rise to at least 35 mm Hg, the
circuit has a significant leak. If a significant leak exists, isolate and repair the
(j) Turn the control knob ON and repeat steps (a) through (i) for the
vaporizer control valve in the ON position and then in the OFF position.
(k) When you finish this leak test procedure, remember to close all
cylinder valves and flow control valves.
(4) Leak test procedure number 3B. Perform leak test procedure number
3B on the pediatric partial re-breathing circuit to determine that there are no significant
leaks in the circuit.
(a) Close the scavenging valve as far as possible.
(b) S-L-O-W-L-Y open the cylinder valve all the way.
(c) Open the oxygen flow control valve gradually and establish a
200 cc/minute flow.
(d) Block the opening in the pediatric TEE connector.
(e) Pinch the small breathing bag nipple above the scavenging valve.
(f) Observe the breathing circuit gauge. Verify the breathing circuit
pressure gauge rises to 35 mm Hg or higher as you pressurize the apparatus circuit. If
the breathing circuit pressure gauge does not rise accordingly, isolate and repair the