English - Spallation Neutron Source

Chapter 5: Using The Cabinet
Security Lock
NOTE: The security lock automatically reactivates and locks out
the keypad every time the blower is shut off, by the keypad or by
closing the sash. After the initial auto diagnostic screen is cleared,
the security lock reactivates.
The security lock feature prevents operation of the Biosafety Cabinet by
unauthorized users. To engage the security lock, access the Security Lock
submenu, as described in Figure 5-4. Select the “secure” option, and press
the “OK” button. A ‘lock’ icon appears on the LCD display. Once
engaged, the operator must enter the proper sequence of keystrokes to
operate the cabinet. The proper sequence to unlock the Security Lock is:
Press the “▼” keypad 3 times within 2 seconds.
After successful entry of the unlock code, the lock icon disappears from
the display, and the user has full access to the keypad functions.
To disable the Security Lock, enter the Security Lock submenu and
select the non-secure mode. The lock is completely disabled.
Filter Life Display Options
This menu selection determines how the filter life remaining gauge is
displayed. When “Bar Graph with %” is selected, the gauge will be
displayed as a horizontal bar graph with the filter life remaining shown
graphically and digitally. When “Circle Graph” is selected, the gauge is
displayed as a semicircular bar graph, including a digital display.
Data Output Rate
NOTE: This selection will only work if the optional RS-232 board is
installed.
This menu option selects the rate that the RS-232 board outputs data.
Data can be output at a rate of once per second, once every 10 seconds,
once every 30 seconds, or once per minute.
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