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7. If the password is entered correctly, you will be allowed
to select between altering the cabinet’s configuration,
or calibration. Press the [DOWN] button until the
Calibration option is highlighted, then press
[OK/MUTE] to start the calibration procedure.
IF THE UNIT IS CONNECTED TO AN EXHAUST
SYSTEM, YOU MUST STOP ALL AIRFLOW OVER
THE SENSOR DURING THE INITIAL ZEROING OF
THE SENSOR - DO THIS BY SHUTTING OFF THE
EXHAUST SYSTEM, OR BLOCKING THE SENSOR
INTAKE WITH TAPE.
8. If the biosafety cabinet’s internal blower was on, it will automatically turn off.
Once all airflow from a remote (building) exhaust system has been removed (if a
Type A2 with canopy, Type B2, or Type C1 operating in B-mode), press
[OK/MUTE] to continue.
9. The unit must sit for approximately 30 seconds with no
airflow over the sensor in order to establish the zero
point value.
10. After approximately 30 seconds, the cabinet blower(s)
will restart, and then the exhaust flow over the sensor
must be reestablished – either open the exhaust valve,
or uncover the sensor, press [OK/MUTE] to continue.
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