Cylinder Cutoff Valves (Canada) - Dräger Narkomed 2C Technical & Service Manual

NM2C
4.3

Cylinder Cutoff Valves (Canada)

Access to the cylinder cutoff valves requires removal of the table top from the
anesthesia machine. Figure 4-3 shows the locations of the O
and N O cutoff valve assemblies. The instructions apply to all three assemblies.
2
On earlier machines the tubing arrangement may be slightly different from
that illustrated.
NOTE: Replacement of the O
24 months. Documentation shall be created by the service person and a copy
distributed to the owner institution. Testing of the O
performed at each PMS. (Perform the flow test given at the end of the
following procedure)
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.3.8
4.3.9
4.3.10
NOTE: On later machines with assemblies that have brass fittings instead
4.3.11
4.3.12
Rev. C
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REPLACEMENT PROCEDURES (continued)
Cutoff Valve Assembly shall be performed every
2
Disconnect all pipeline hoses and set the System Power switch to ON.
Close all cylinder valves except the O
Set the oxygen flow to 5 liters per min.
Open the other gas flow control valves to drain pressure from the
system.
Close the O cylinder valve, and close the flow control valves. Press
2
the O Flush valve to drain oxygen pressure from the system.
2
Set the System Power switch to STANDBY.
Remove the screws holding the table top to the machine and lift out
the table top.
Remove the top drawer from the cabinet and pull the writing or
keyboard tray out to its fully extended position.
Disconnect the compression fittings indicated at points marked C on
the illustration.
Cut the tie-wrap clamp and disconnect the flexible tubing from the
cutoff valve assembly at the point marked A on the illustration.
of nylon, the flex tubing is attached with a press-on hose clamp
instead of a tie strap.
Remove the cylinder cutoff assembly.
Connect the flexible tubing to the replacement cutoff valve assembly
and secure it with a new tie-wrap clamp.
4-9
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Cutoff Valve shall be
2
valve.
2
, Air or 3rd gas,
2