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3.0
Description
3.1
General
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Warning: This manual and all its associated documentation must be studied thoroughly before any
attempt is made to install, operate or maintain any part of the Tec 5 Vaporizer.
The Tec 5 Vaporizer is designed for out of circuit use in continuous flow techniques of inhalation
anaesthesia.
The vaporizer is temperature, flow and pressure compensated so that its output remains relatively
constant despite cooling due to evaporation, variations in inlet flow and fluctuating pressures as
described in Section 7.2 Effect of Variables.
Each vaporizer is agent specific and is clearly labelled with the name of the anaesthetic agent for which
it is designed.
The vaporizer is designed to be used on Selectatec Series Mounted Manifolds. The vaporizer can be
installed on other Selectatec Manifolds but the interlock system is designed to function on Selectatec
Series Mounted Manifolds only.
Mounting a Tec 5 vaporizer on a Selectatec 7 Compatibility Block is not recommended.
"It is a requirement of European Standard prEN 740 - Anaesthetic Workstations And Their Modules, that
an appropriate gas monitor is used to monitor the concentration of anaesthetic agent vapour in the
inspiratory gas when the vaporizer is in operation, in order to provide protection against hazardous
output in the event of a device malfunction".
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Warning: If the vaporizer has been inverted, connect it to a gas scavenging system, set the dial to
5% and purge the vaporizer with the carrier gas at 5 litres/minute for 5 minutes.
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Caution: Although the vaporizer incorporates an integral non-spill system, the vaporizer is intended
to be operated in its upright position.
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Caution: Turn the Vaporizer OFF when it is not in use.
3.2
Control Dial
A single control dial with a concentration scale calibrated in percentage of anaesthetic agent vapour per
total volume (% v/v) is employed to set the desired concentration of the anaesthetic agent.
A dial release is incorporated in the dial assembly to prevent accidental displacement of the control dial
from the OFF position. To select an ON setting it is necessary to pull in the dial release and
simultaneously rotate the dial counter-clockwise.
The dial and dial release are designed to enable an ON setting to be selected using only one hand.
3.3
Safety Interlocks
The vaporizer incorporates an interlock mechanism. This mechanism also interfaces with the Selectatec
Series Mounted Manifold to comprise an interlock system which is designed to help ensure that the
following criteria are satisfied:
1.
The vaporizer must be locked on to the manifold before it can be turned ON.
2. Only one vaporizer at a time can be turned ON when two or more Tec 4, Tec 5 or Tec 6 vaporizers
are fitted on a Selectatec Series Mounted Manifold.
3.
The gas flow enters only the vaporizer which is turned ON.
4. Any unwanted anaesthetic trace vapour is minimised after a vaporizer is turned OFF.
Tec 5 Vaporizer
O & M Manual Part No. 1105-0100-000
Page 3
August 1999
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