Jarvis Erickson erickson.jarv@students.uwlax.eduWhat to do if the pressure on the oxygen valve cannot be decreased?
There is the possibility that the ox. needle valve is closed, however, chances are there is a restriction (some trapped debris or plug) in the oxygen circuit of the system. One likely occurrence is that a small piece of rubber plugged the ox. vent on the front of the instrument, it happens when the cap is over-tightened and the vent cuts into the rubber insert inside the cap. Also, just a reminder: when the instrument is in “standby” mode the oxygen is cut off which would produce the same symptom of the pressure not decreasing.
