O2 Flow Test - Dräger Narkomed 2B Service Manual

REPLACEMENT PROCEDURES (continued)
4.3.13 Connect and tighten the compression fittings at points marked C on
the illustration.
4.3.14 Perform the following test: --Remove the plug from the test gauge
connection at the Tee fitting in the regulator outlet piping, and install
a test gauge.
NOTE: The cylinders used for this test must contain the following minimum
pressure:
--Set the System Power switch to ON.
--For the O
4 liters per min.
--For the N
valve. Set each flow to 4 liters per min.
--Verify that regulator outlet pressure is between 43 and 49 PSI.
--Connect the pipeline hoses and pressurize to 50 PSI.
--Turn off the pipeline supply and observe the pipeline pressure gauge.
--The cutoff valve shall open when the pipeline pressure drops through the
range of 45 to 40 PSI.
--Close the cylinder valve(s), and close the flow control valve(s).
--Disconnect test pressure gauge and reinstall the plug in the regulator outlet
piping.
4.3.15 Replace the table top and its retaining screws.
4.3.16 Replace the top drawer in the cabinet.
4.3.17 Connect the pipeline hoses.
4.3.18 Perform the PMS Procedure given in Section 6.
O Flow Test:
2
--Disconnect all pipeline supplies.
--Install a full O cylinder on the machine, and open the cylinder valve.
2
--Turn the System Power switch to ON.
--Set the Inspiratory Flow control to maximum high, and turn the ventilator switch to ON.
--Set the oxygen flow to 10 l/min.
--Verify that the oxygen flow does not drop below 8 l/min. while the ventilator is running.
--Press and hold the O
oxygen flow does not drop below 8 l/min.
--If the oxygen flow in either of the above two steps drops below 8 l/min., replace the O
valve assembly.
RETURN TO THIS MANUAL'S TABLE OF CONTENTS
O : 1000 PSI
2
O +He : 1000 PSI
2
cutoff valve: open the O
2
O cutoff valve: open the O
2
FLUSH button while observing the O
2
4-10
RETURN TO CD-ROM TABLE OF CONTENTS
AIR : 1000 PSI
N O : 745 PSI
2
cylinder valve and set the oxygen flow to
2
cylinder valve and the N
2
flowmeter, and verify that the
2
NM2B
O cylinder
2
cutoff
2
Rev. D