Auxiliary Oxygen Flowmeter - Dräger Narkomed 2C Technical & Service Manual

REPLACEMENT PROCEDURES (continued)
4.26 Auxiliary Oxygen Flow Meter
Old and new style auxiliary oxygen flowmeters are attached to the side of the
machine's flowmeter housing by two screws - accessible from inside the
housing. Later installations of the new style auxiliary oxygen flowmeter have
a stud and nut arrangement for mounting. A flexible O
flowmeter connects to a hose barb fitting at the system power switch. Figure
4-26 shows a typical mounting and tubing arrangement.
4.26.1 Disconnect all pipeline hoses and close all cylinder valves.
4.26.2 Press the O
4.26.3 Turn the System Power switch to STANDBY and remove AC power
from the machine.
4.26.4 Remove the back cover from the flowmeter housing.
4.26.5 Cut the tie strap on the flexible tube at the system power switch, and
remove the tube.
4.26.6 Remove the screws (or nuts) securing the auxiliary O
remove the flowmeter.
4.26.7 Position the replacement flowmeter at the side of the flowmeter
housing (feed the flex tubing through the clearance hole) and secure
the auxiliary O
previously removed.
4.26.8 Connect the flex tubing to the hose barb fitting behind the Clippard
valve, and secure it with a tie strap.
4.26.9 Reinstall the flowmeter housing back cover.
4.26.10 Connect the pipeline hoses and restore AC power to the machine.
4.26.11 Perform the PMS Procedure given in Section 6.
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Flush button to drain oxygen pressure from the system.
2
flowmeter with the two screws (or nuts) that were
2
4-76
NM2C
supply tube from the
2
flowmeter, and
2
Rev. G