Principle Of Operation; Interlock Mechanism; Fig.12 Vaporizer Interlock Mechanism - Datex-Ohmeda Tec 5 Operation And Maintenance Manual

6.0

Principle Of Operation

6.1

Interlock Mechanism

The vaporizer locking lever, illustrated on Fig. 12, is interlocked with the vaporizer percentage control dial in
such a way that the control dial release, located at the rear of the dial, cannot be actuated until the vaporizer
locking lever is in the locked position.
With the vaporizer locking lever in the locked position the dial release can be pressed in towards the dial to
operate the interlock mechanism which simultaneously actuates the following:
1. The interlock extension rods, which extend to minimise the possibility of adjacent vaporizers being
turned ON.
2. The two port valve actuating spindles, which actuate the Selectatec Manifold port valves to allow fresh
gas to flow through to the vaporizer.
3. The vaporizer percentage control dial release, which allows the dial to be turned to select the required
percentage.
Turning the control dial to OFF automatically reverses the operating sequence, which allows the dial release
to move out to lock the dial in the OFF position, closes the manifold port valves and vents the vaporizer gas
connecting ports and retracts the extension rods to allow an adjacent vaporizer to be turned ON.
Turning the locking lever to the unlocked position releases the vaporizer allowing it to be removed from the
manifold.
CONTROL DIAL
RELEASE
VAPORIZER
LOCKING LEVER
PORT VALVE
ACTUATING
SPINDLE
PORT
VALVES
SELECTATEC
SERIES
MOUNTED
MANIFOLD
Tec 5 Vaporizer
O & M Manual Part No. 1105-0100-000
Fig. 12 Vaporizer Interlock Mechanism
PERCENTAGE
CONTROL DIAL
EXTENSION
ROD
PORT
VALVES
Page 15
August 1999