Labconco Biological Safety Cabinets 34610 Series - Manual (Page 30)

Chapter 5: Using The Cabinet
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UV light
In this mode the UV (germicidal) light is operating. When the
sash is fully closed, the UV light can be programmed to
automatically turn on. When the sash is raised, the light
automatically turns off, to protect the laboratory from UV
irradiation.
Timer
When either the interval or stopwatch timer mode is active, this
icon appears.
Security Lock
When the security lock is activated the keypad does not respond to
any buttons until the proper sequence of keystrokes is entered.
Mute
When this icon is on, the audible alarm is muted for
approximately 5 minutes.
Operating the Sliding Sash
The counterbalanced, anti-racking sash mechanism requires only a few
pounds of force to move the sash up or down. You can open or close the sash
smoothly with one or two hands positioned on either handle.
The sash position alarm and safety interlock system senses the sash position
and acts appropriately. The Biosafety Cabinet has been programmed to
operate at an 8-inch (203 mm) sash opening. Raising the sash above its
operating height will activate the audible and visual alarms. The audible
alarm can be temporarily muted (for approximately five minutes) by
depressing and releasing the Mute/OK button. Closing the sash back to its
operating position will reset the alarm and defeat the muting of the alarm.
The safety interlock system senses when the sash is closed and allows the
optional ultraviolet (UV) lamp to operate only when the sash is closed, to
protect the operator from irradiation.