Labconco Total Exhaust Biological Safety Cabinets 30368 Series - Manual (Page 34)

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 activate the display and again to start the
unit. If the exhaust flow is insufficient at startup, the Logic+ blower
will not start, and the Status Display Window will display “airflow
check”, and continue to sample the exhaust flow. If the exhaust
airflow is sufficient within 60 seconds, the cabinet blower will then
start, and the Status Display Window will display the “please wait”
message for approximately 90 seconds to allow the cabinet to reach
proper operating conditions. If the exhaust flow is insufficient after 60
seconds, the audible alarm will sound, and the LCD display will
indicate an Inflow Alarm. The alarm can be reset by pressing the
“Blower” button again.
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