2.2.3.1. Airflow Calibration
This option allows proper calibration and operation of the airflow sensor alarm. There will be two points to be
calibrated, namely inflow fail point and inflow nominal point.
2.2.3.2. Reset Calibration
This option allows the user to reset all values calibrated in the field and return it to the values obtained during
factory calibration.
2.2.4. Admin Settings
The admin menu allows you to change both FAN and ADMIN PIN. The reset blower, filter and UV hour meter
(if present) functions are usually used after the blower, filter or UV lamp is changed as they can easily serve as
an indication to the user on when the BSC needs maintenance. The reset default function will return the
options in the settings menu to their factory settings.
2.2.4.1. New ADMIN PIN (Default 0009)
ADMIN PIN restricts access to some of the more delicate menu functions, namely admin and field calibration,
which should only be accessed by qualified personnel. User must enter a four-digit ADMIN PIN before
accessing these menus.
ADMIN PIN can also be used to switch to maintenance mode from error condition.
2.1.4.2. New FAN PIN (Default 0000 - DISABLED)
FAN PIN restricts access to fan control and some parts of the menu, settings and set mode. User must enter
the four-digit PIN before switching the fan on or off. This feature prevents unauthorized personnel from
accessing critical control sections. It will also prevent unauthorized shutdown of the BSC when continuous
operation is required. FAN PIN is also needed to disable the alarm when the sash is fully raised and cleaning
needs to be performed.
It is recommended that the FAN PIN be issued only to personnel authorized to use the BSC. With FAN PIN, the
user can access admin and set mode parts of the menu.
Setting the PIN to 0000 will disable this feature. The FAN PIN is disabled by default. When the FAN PIN is
disabled, the BSC can be turned on and off without requiring PIN. However, to access the menu, the user is still
required to enter the FAN PIN (0000).
2.1.4.3. Airflow Monitor
Whenever the air velocity falls below the fail point, the air fail alarm will be triggered. This option is used to
enable/disable alarm. The alarm is enabled by default.
When the Airflow Monitor is disabled, the warm up period is removed but the airflow will not be displayed for
the first three minutes.
If the ambient temperature is outside of 18-30
o
C (which is the cabinet working temperature), the Airflow
Monitor is automatically disabled.
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