Controls And Indicators; Dial Assembly; Auditory And Visual Indicators; Fig. 3 Dial Assembly - Datex-Ohmeda D-Tec Operation And Maintenance Manual

3.0

Controls And Indicators

3.1

Dial Assembly

The manually operated dial is used to select the level of agent concentration from 1% to 18%. The dial is
marked at intervals of 1% from 1% to 10% and at intervals of 2% from 10% to 18%. Selections can be
made at any setting between 1% and 18%.
The dial release incorporated in the dial
assembly must be operated in order to turn
the dial from the q (Standby) setting and it
must be operated again to turn the dial from
12% to a higher % setting. All other
settings can be made without operating the
dial release.
A solenoid interlock mechanism is also
incorporated to help to ensure that the dial
can be operated only when the green
OPERATIONAL light located on the display
panel is illuminated.
3.2

Auditory And Visual Indicators

Visual indicators and an auditory alarm are used to provide the vaporizer status display and also to indicate
an alarm condition, as described in Section 3.3.
Visual indicators are located on the front
display panel illustrated in Fig. 4 and the
auditory alarm is mounted behind the
upper part of the front display panel.
An auditory alarm mute button
above the display panel can be used to
mute the alarm temporarily under certain
conditions as described in Sections 3.3,
3.3.4 and 3.3.5.
The LCD agent level display indicates the
level of agent contained in the vaporizer
sump, as described in Section 3.3.3. The
range of indication is between a minimum
of 60 ml and a maximum of 390 ml. When
the indication is below the 240 ml refill
mark , illustrated in Fig. 4, it indicates
that an additional 240 ml of agent can be
added.
Page 6
August 2001
DIAL
RELEASE
AUDITORY ALARM
MUTE BUTTON
located
GREEN
RED
AMBER
AMBER
AMBER
EQUI-POTENTIAL STUD
DIAL

Fig. 3 Dial Assembly

DESFLURANE
OPERATIONAL
LCD AGENT
LEVEL
DISPLAY
NO OUTPUT
LOW AGENT
WARM-UP
ALARM
BATTERY LOW

Fig. 4 Front Display Panel

D-Tec Vaporizer
O & M Manual Part No. 1107-0622-000
390 ml
NOMINAL
240 ml
REFILL
MARK
60 ml
NOMINAL