Siemens KION Service Manual page 37

KION / KION-i
ENFLURANE
FRESH GAS
TO VAPORIZER
OFF
FRESH GAS
FROM VAPORIZER
ANESTHETIC
AGENT LIQUID
E382 E392E 061 01 02 02
HALOTHANE
ISOFLURANE SEVOFLURANE
OFF OFF
FRESH GAS
DESFLURANE
TO VAPORIZER
FRESH GAS
FROM VAPORIZER
ANESTHETIC
AGENT LIQUID
Siemens-Elema AB
13. PIVap vaporizers
There are PIVap vaporizers available for five different
anesthetic agents; Halothane, Enflurane, Isoflurane,
Sevoflurane and Desflurane.
A tank inside the vaporizer contains the anesthetic
agent. When the fresh gas passes through the
vaporizer, the anesthetic agent is injected into the
gas. This gas mixture, fresh gas from vaporizer, is
then routed back to the P
The PIVap vaporizers, excluding Desflurane, are
equipped with a Keyfil mechanism. For Sevoflurane,
there is also a QUIK FIL® version available.
The Desflurane vaporizer is equipped with a filling
device designed to handle the pressure inside the
vaporizer. At room temperature, the pressure inside
the Desflurane vaporizer is approx. 110–140 kPa
(1.1–1.4 bar).
The anesthetic agent concentration delivered by the
vaporizer is depending on the ambient temperature
and the filling level in the vaporizer. See "Technical
specifications" in the "KION / KION-i – Operating
Manual" for further information. The concentration
should not be set between Off and the first
graduation above zero.
When the vaporizer is activated (a concentration is
set with the knob), fresh gas from the G
enters the vaporizer. In the vaporizer, the gas passes
an adjustable throttle valve. The pressure, built up by
the flow resistance in the throttle valve, will act upon
the anesthetic agent liquid surface in the reservoir.
The liquid will then be pressed through the nozzle
into the gas stream after which it vaporizes.
The higher the concentration is set on the knob, the
higher the pressure created by the throttle will be.
This higher pressure will then force more liquid
through the nozzle and a higher anesthetic agent
concentration will be the result.
A design change will be implemented in the
Desflurane vaporizer during 2003. The gas outlet will
be equipped with a one-way valve as shown in the
illustration.
The vaporizers must be checked during the "Six
months maintenance" and the "Twelve months
maintenance". One O-ring in each vaporizer valve
must be replaced during the "Twelve months
maintenance".
Handle the vaporizer with care and never turn a
vaporizer containing anesthetic agent upside
down or lay it sideways.
Description of functions
S .
NEUMATIC ECTION
M
AS ODULES
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