Esco Cytoculture LS2-4A1, User Manual

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Cytotoxic Lead Shielded Class II Biological Safety Cabinets
2.2.1.3 Post Purge Timer
After the user switches off the fan, there will be a period of post-purge. This feature is to ensure that all
residual contaminants are purged from the work zone. The default setting is zero minute and user can set it
from zero minute to 15 minutes. Setting it to zero minute will disable this feature. However, it is
recommended to purge the Cabinet by leaving the fan on for around 3 minutes after the work is complete.
MENU SETTINGS POSTPURGE XX MINUTES
2.2.1.4 UV Timer
To switch off the UV lamp automatically after a fixed period, UV TIMER menu can be used. The UV TIMER can
be set up to 18 hours. By default, this feature is disabled. UV lamp, then, has to be switched off manually. Esco
does not recommend that you leave the UV lamp on for more than 60 minutes or overnight as it shortens the
lifespan of the UV lamp.
MENU SETTINGS UV TIMER HH:MM
2.2.1.5 Airflow Unit Selection
Using this option, you can select the unit in which air velocity is measured and displayed. You can choose
between meter per second (m/s) and feet per minute (fpm). When the fan is running and also during the
calibration process, airflow measurement is displayed in the selected unit.
MENU SETTINGS VELOCITY UNIT
M/S
FPM
2.2.1.6 Temperature Unit Selection
Using this option, you can select the unit in which temperature is measured and displayed. You can choose
between Celsius and Fahrenheit. The exhaust temperature is displayed in the selected unit.
MENU SETTINGS TEMP UNIT
FAHRENHEIT
CELCIUS
2.2.2 Calibration
The purpose of calibration is to ensure the accuracy of the airflow display and alarm (if present). This involves
measuring airflow with reference instrumentation and establishing reference between airflow sensor(s) on the
Cabinet to the standard reference. Calibration should only be carried out by trained personnel.
SET CONSTANT
MENU CALIBRATION ZERO SENSOR
CALIB SENSOR
2.2.2.1 Set Constant
Every sensor manufactured by Esco has a specific Sensor Constant which is used for temperature
compensation performed by the temperature sensor.
2.2.2.2 Zero Sensor
This option is to let the controller record the specific sensor output voltage and correspond it to 0 m/s or 0
fpm.
2.2.2.3 Calib Sensor
This option allows proper calibration and operation of the airflow sensor alarm. There will be three points to
be calibrated, namely inflow fail point, inflow nominal point, and downflow nominal point.