47
Airflow Sensor Calibration
All Type B2 biosafety cabinets have an airflow sensor to sense the exhaust air pulled
from the cabinet by the remote (building) exhaust system. Type A2 and C1 biosafety
cabinets may have an airflow sensor as an optional accessory.
Unless installing or replacing the airflow sensor, the zero point should be correctly set
from the factory (see
Zero Point Calibration
later in this section). Once proper airflows
have been set by a trained and qualified certifier, the nominal set point should be
calibrated after setting the Filter Life Gauge in the Calibration menu. For a Type B2
biosafety cabinet, both the nominal and alarm set point will be calibrated.
Type A2 and Type C1
Note:
If installing an airflow sensor on an A2 or C1 biosafety cabinet in the field, which
did not previously have this accessory installed, first enable the Airflow Sensor in
Configuration
, as described in
Change Configuration
in
Section 8: Configuration
.
To access the Airflow Sensor Calibration screen(s), follow the steps in
Adjusting the
Blower Speed
and
Setting the Filter Life Gauge
previously shown in this section, until on
the
Filter Life Selection
screen. Then follow these instructions:
1. On the
Filter Life Selection
screen, press
[OK/MUTE]
.
2. Using the average inflow velocity measured during airflow certification, use
[UP]
or
[DOWN]
to adjust the
Nominal Inflow Value
to match this measured velocity.
The
Nominal Inflow Value
will flash, and it will be displayed in feet per minute
(FPM) or meters per second (M/S) based on the desired units selected in the
Settings
submenu. Once set, press
[OK/MUTE]
.
NEW FILTER
SAME FILTER
SET FILTER LIFE
[OK/MUTE]
INFLOW = 105 FPM
INFLOW
CALIBRATION
‘OK’ TO CONTINUE
Nominal
Inflow
Value
Содержание Logic+ A2
Страница 148: ...148 Wiring Diagrams The wiring diagram is also located on the blower plenum cover behind the dress panel 100 115V...
Страница 149: ...149 208 240V...
Страница 151: ...151 Blower only will not start...
Страница 152: ...152 Lights only will not illuminate...
Страница 153: ...153 UV Light will not illuminate...
Страница 154: ...154 Airflow Alert activating...
Страница 155: ...155 Filter Life Gauge not at 100 when new...
Страница 156: ...156 Contamination in the work area...
Страница 200: ...200 Figure 23 4 1 2 4 3 5 7 6 8 8...
Страница 201: ...201 END OF 3849920 Figure 23 5 9 10 11 12 13...