
ADJUSTMENT AND CALIBRATION PROCEDURES (continued)
NM2B
5.5A Low Flow Oxygen Ratio Controller (ORC) Adjustment
5.5.1A
Remove the rear cover of the flowmeter housing.
5.5.2A
Connect a calibrated oxygen monitor to the fresh gas outlet.
5.5.3A
Disconnect the pipeline hoses.
5.5.4A
Pinch the N
2
O bypass line on the ORC. See Figure 5-5A.
5.5.5A
Open the oxygen and nitrous oxide cylinder valves.
5.5.6A
Set the System Power switch to
ON
.
5.5.7A
Close the O
2
and N
2
O flow control valves.
5.5.8A
Set the O
2
flow control valve to 10 l/min.
5.5.9A
Set the N
2
O flow control valve to 10 l/min.
5.5.10A Set the O
2
flow control valve to 800 ml/min for one (1) minute. Verify
that the O
2
concentration indicates 21% to 29% O
2
.
5.5.11A Decrease the oxygen flow rate.
5.5.12A If the nitrous oxide flow does not stop when the oxygen flow rate is
between 325 and 350 ml per minute, loosen the adjusting screw
locknut and turn the adjusting screw (counter-clockwise to decrease
N
2
O flow, clockwise to increase N
2
O flow). Tighten the locknut.
5.5.13A Repeat steps 5.5.7A thru 5.5.12A until no further adjustment is
needed.
5.5.14A Adjust the oxygen flow to a point where the nitrous oxide flowmeter
indicates 10 liters per minute.
5.5.15A The oxygen concentration should be between 21% and 29% oxygen.
5.5.16A Slowly decrease the oxygen flow to 800 ml/min. The nitrous oxide flow
should decrease proportionally, and the oxygen concentration should
remain between 21% and 29% oxygen.
5.5.17A Reduce the O
2
flow to 500 ml/min. Verify that the N
2
O flow is greater
than or equal to 600 ml/min.
5-17A
Rev. F
Содержание Narkomed 2B
Страница 2: ...RETURN TO THIS MANUAL S TABLE OF CONTENTS RETURN TO CD ROM TABLE OF CONTENTS ...
Страница 18: ...RETURN TO THIS MANUAL S TABLE OF CONTENTS RETURN TO CD ROM TABLE OF CONTENTS ...
Страница 32: ...RETURN TO THIS MANUAL S TABLE OF CONTENTS RETURN TO CD ROM TABLE OF CONTENTS ...
Страница 240: ...RETURN TO THIS MANUAL S TABLE OF CONTENTS RETURN TO CD ROM TABLE OF CONTENTS ...
Страница 244: ...RETURN TO THIS MANUAL S TABLE OF CONTENTS RETURN TO CD ROM TABLE OF CONTENTS ...
Страница 306: ...RETURN TO THIS MANUAL S TABLE OF CONTENTS RETURN TO CD ROM TABLE OF CONTENTS ...