Selectatec Series Mounted Manifold Gas Circuit; Fig.15 Manifold By-Pass Circuit - Datex-Ohmeda Tec 5 Operation And Maintenance Manual

6.2

Selectatec Series Mounted Manifold Gas Circuit

Fresh gas is introduced from the flowmeters into the Selectatec Series Mounted Manifold which incorporate
pairs of series-connected, two-way port valves.
When a vaporizer is locked on to a manifold and turned ON, both associated port valves are opened. Fresh
gas from the manifold flows into the vaporizer via the inlet port valve and the gas/agent mixture flows from
the vaporizer into the manifold via the outlet port valve.
When the vaporizer is turned OFF, or if no vaporizer is fitted, each port valve is closed to provide a seal to
atmosphere and also to allow the fresh gas to by-pass the vaporizer via the manifold by-pass circuit.
Vaporizer B illustrated on Fig. 15 is turned OFF, therefore both port valves to which vaporizer B is connected
are closed so that the carrier gas flows through the manifold by-pass circuit to vaporizer A.
VAPORIZER A
TO COMMON
GAS OUTLET
Vaporizer A is turned ON therefore both port valves to which vaporizer A is connected are open so that
carrier gas flows through the vaporizer to the common gas outlet.
The Selectatec Series Mounted Manifold and the vaporizer connection system previously described forms
an interlock system that is designed to allow only one vaporizer at a time to be turned ON. This manifold
system accepts Tec 4, Tec 5 and Tec 6 vaporizers.
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Warning: Connecting any vaporizer other than a Datex-Ohmeda Tec 4, Tec 5 or Tec 6 vaporizer to the
Selectatec Series Mounted Manifold defeats the interlock system. This action results in the ability to
administer anaesthetic agent mixtures, possibly resulting in patient injury.
Tec 5 Vaporizer
O & M Manual Part No. 1105-0100-000
Fig. 15 Manifold By-pass Circuit
VAPORIZER B
(ISOLATED)
FROM
FLOWMETERS
MANIFOLD
BY-PASS
Page 17
August 1999