Labconco Biological Safety Cabinets 30268 Series - Manual (Page 32)

Chapter 5: Using The Cabinet
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Original instructions
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 either an 8- or 10-inch (203-254 mm) sash opening, depending on
model. 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 OK/Mute
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.
Starting the Biosafety Cabinet
1. To start the biosafety cabinet, raise the sash until its bottom edge
aligns with the sash position label on the left corner post. The decal is
shown in Figure 5-5.
2. Press the blower button to start the unit. The unit will display a
standby screen for approximately 90 seconds to allow the cabinet to
reach proper operating conditions. If the alarm sounds, recheck the
sash position. If the sash is too high, the sash audible alarm and the
LCD display will indicate the sash is too high.
3. To turn the UV light on, the sash must be completely closed to
prevent the escape of any UV radiation. Push the UV light button to
activate the UV light.
Note: The sash must be completely closed for the UV light to activate.
Sash position label
Figure 5-5