Test Procedures
Note: Failure of the following test will require unit to be returned for service.
These tests must be conducted periodically to ensure proper operation.
(Refer to gure 1)
Test: Connect unit to a 50psi gas source. Check to make sure control
valves are turned off. Gently turn both valves clockwise until unit
resistance is felt.
1. Minimum oxygen: Turn on unit by pushing and turning on/off knob. A 3
liter ow of oxygen should be produced through O2 tube.
2. Oxygen ush: Depress O2 ush button to determine a rapid ow of
oxygen into breathing circuit. Flow should stop when button is released.
3. Maximum nitrous: Turn N2O needle valve wide open. N2O ow should
not exceed 7 LPM.
4. Fail safe test: Establish a 7 LPM N2O ow and 3 LPM O2 ow. Disconnect
O2 supply source or shut off O2 supply. Both O2 and N2O ows should
stop owing.
5. Air intake valve: Attach breathing bag and corrugated breathing tube
to proper ports of tee. Unit should be turned off and bag attened. Inhale
through breathing tube. Room air must enter through air intake located on
bottom of breathing circuit tee.
6. Non-Rebreathing valve: Connect corrugated tube to front of tee and
attempt to exhale through tube. Valve should be closed preventing
exhaled air from going into tube.
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