Settings - Airstream Class II User Manual

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3.2.1.桠Settings
Users may use the settings menu function to customize the operation of the BSC to meet specific application
requirements. The settings menu can be entered using either FAN PIN or ADMIN PIN.
3.2.1.1.桠 Set Clock (Time)
Users can set the time by increasing/decreasing the hour and minute values. The correct time will be
maintained even after the unit is turned off.
3.2.1.2.桠 UV Timer (If UV present)
UV timer can be used to switch off the UV lamp automatically after a fixed period. The UV timer can be set up
to 18 hours. By default, the timer is set to 60 minutes. Esco does not recommend leaving the UV lamp on for
more than 60 minutes per decontamination cycle as it shortens the lifespan of the UV lamp. Unless the UV
timer is activated, the lamp has to be switched off manually.
3.2.1.3.桠 Measurement Unit
Using this option, the user can select the unit in which air velocity is measured and displayed. The user can
choose between metric (m/s) and imperial (fpm) units.
3.2.1.4.桠 Warm Up Time
There will be a warm up period before the BSC is fully functioning upon activation of the unit. This is to ensure
that the sensors, the blower, and the control system are stabilized, as well as to ensure the work zone is
purged of contaminants. The default setting is 3 minutes and the user can set it between 3 to 15 minutes.
(Note: Please note that WHO Laboratory Biosafety Manual (3 rd edition) advocates 5 minutes purging time prior to start of
work while US Biosafety in Microbiological and Biomedical Laboratories (5 th edition) advocates 4 minutes).
During the warm up period, the user can use the FAN button to turn off the blower, LIGHT button to turn on
and off the fluorescent lamp and MENU button. However, to be able to access the menu, the user needs to
input ADMIN PIN and even then, some sections of the menu (WARM UP and all FIELD CALIBRATION) are still
not accessible for the user. Entering the menu during this time will put the warm up period on pause.
3.2.1.5.桠 Post Purge Time
After the user switches off the BSC blower, there will be a post-purge period, to ensure that all contaminants
are purged from the work zone. The default setting is zero minute (disabled) and user can set from 0 up to 15
minutes. It is recommended that BSC is purged for a minimum of 3 minutes after the work is complete.
(Note: Please note that WHO Laboratory Biosafety Manual (3rd edition) advocates 5 minutes post purging time after work
is completed while US Biosafety in Microbiological and Biomedical Laboratories (5th edition) advocates 4 minutes).
3.2.1.6.桠 Set Date
Users can set the date by increasing/decreasing the year, month and minute values. The correct date will be
maintained even after the unit is turned off.