Table of Contents
Advertisement
Tec 6 Plus Vaporizer
Alarm and indicator display
See Figure 7-1.
1.
When the electrical supply is connected, each light and each LCD
agent level display bar on the front display panel (17) flashes and
the auditory alarm activates to indicate that the alarms are opera-
tional. After approximately four seconds, each light is extin-
guished, the LCD bars stop flashing and the auditory alarm is
silenced.
The amber WARM-UP light is illuminated to indicate that the va-
porizer is in its warm-up cycle and the LCD agent level display
bars indicate the amount of agent in the sump.
During the warm-up cycle, the shut-off valve (8) is closed to pre-
vent the supply of vapor to the pressure regulating valve (7), and
the electronics (16) perform the zero check.
When the vaporizer attains the required operating temperature,
the amber WARM-UP light is extinguished and the green OPER-
ATIONAL light illuminates to indicate that the vaporizer is ready for
use.
Delivery of gas/agent vapor
1.
When the vaporizer is ready for use, a signal from the electronics
(16) operates the solenoid (19) in the interlock mechanism which
allows the dial and rotary valve (1) to be turned.
When the dial and rotary valve (1) are turned, a signal from the
electronics (16) opens the shut-off valve (8).
The pressure control transducer (3) sends a signal of the differ-
ence between the gas inlet pressure and the regulated agent pres-
sure to the electronics (16). The electronics alters the regulated
agent pressure by opening or closing the pressure regulating
valve (7) to balance the pressures.
When the regulated agent pressure of the circuit is equal to the
gas inlet pressure, the vaporizer functions correctly.
The dial and rotary valve (1) regulates the volume of vapor being
delivered to the fresh gas mixture.
The fresh gas mixes with the vapor just prior to the gas/agent out-
let in the proportions consistent with the selected dial setting.
1/23/01
1107-0641-000
Advertisement
Chapters
Table of Contents
