5.3 Vaporizers
5.3.1 Pre-use Checks
On ALL vaporizers, before use:
1. Check all joints for gas tightness.
2. Check vaporizer agent level.
3. Check for correct agent delivery
concentrations - use an agent analyser.
Always follow the procedures and checklist
given in the instruction manual supplied with
the vaporizer, particularly when filling the
vaporizer with anaesthetic agent.
5.3.2 General Information
WARNING
Vaporizers must always be mounted, never
used free-standing.
Free standing vaporizers may be accidentally
tipped resulting in excessive and uncalibrated
volumes of anaesthetic drug entering the
breathing system.
Do not install or connect any vaporizer of any
description between the CGO and the
breathing system, unless it is specifically
designed for such use. (This allows the
oxygen flush flow to pass through the
vaporizer, and severe overdosage may result).
5.3.3 Selectatec Mounting System
Up to two Selectatec compatible vaporizers
may be fitted (up to three on SP3 models).
To install the vaporizer:
a) Carefully offer the vaporizer up to the
manifold.
b) Check that the gas connection ports on
the vaporizer are aligned with the valves
on the manifold.
c) Carefully lower the vaporizer onto the
manifold and lock the vaporizer into
position by clockwise rotation of the
locking lever through 90
o
.
NOTE Do not use excessive force to lock
the vaporizer onto the manifold. Damage to
the locking fastener will result.
CAUTION
To prevent damage to the locking shaft, ensure
that the gas connection ports are aligned with the
valves on the manifold, and are correctly
engaged, before tightening the locking lever.
5.3.4 Selectatec Compatible
Vaporizers with Interlock
WARNING
Only vaporizers with the Selectatec
compatible interlock function will interlock if
installed on a two station or three station
manifold.
The installation of non-interlock vaporizers
allows the possible operation of more than
one vaporizer at the same time.
If two vaporizers only are mounted on a three
station manifold, they must be installed on
adjacent stations (i.e. the middle station must
be occupied).
Check that the interlock mechanisms of all
the vaporizers on the manifold are working
correctly, i.e. check that only one vaporizer
at a time can be turned on.
5.3.5 Cagemount Vaporizer
Some international standards demand that
this type of vaporizer should only be used on
machines with a single mounting station.
In addition, use safety clip (Cat. No. 52275)
to retain the cagemount taper cones in posi-
tion on the vaporizer.
23
PRE-USE CHECKS
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