51
Vacuum Start Switch Calibration (Type C1 only)
A Type C1 biosafety cabinet operating in B-mode must sense sufficient remote exhaust
volume before starting the internal blowers. This is accomplished with the Vacuum
Start Switch (VSS) located in the exhaust housing of the biosafety cabinet. After setting
the Filter Life Gauge, or calibrating the Airflow Sensor (if present), a Type C1 biosafety
cabinet will ask if the VSS needs to be calibrated.
The VSS is factory calibrated, and should not need recalibration. If the biosafety
cabinet fails to start its internal blowers on demand, and an Exhaust Failure Alarm is
displayed after the Exhaust Airflow Check fails, the VSS may need to be recalibrated if it
has been determined the remote exhaust system is pulling the correct airflow volume.
To reach the VSS calibration screen, access the
Calibration
submenu as described in
Adjusting the Blower Speed
earlier in this section. Pass through the
Blower Speed
,
Filter Life
, and (if present)
Airflow Sensor
Calibration
screens using
[OK/MUTE]
.
If not recalibrating the VSS, select
No
on the screen below and press
[OK/MUTE]
. To
recalibrate the VSS, select
Yes
on the screen below and press
[OK/MUTE]
. Follow
these instructions:
1. Identify the VSS and Inlet Relief Valve atop the cabinet, see Figure 9-3. The Inlet
Relief Valve is a clear flap; the VSS is a black cube with clear hose protruding.
Figure 9-3
VSS
INLET RELIEF
VALVE
AIRFLOW
ADJUSTMENT
HANDLE
DUCT COLLAR ON
BIOSAFETY CABINET
AIR-TIGHT DAMPER
DUCT COLLAR ON
AIR-TIGHT DAMPER
EXHAUST DUCT
(NOT SUPPLIED)
Содержание Logic+ A2
Страница 148: ...148 Wiring Diagrams The wiring diagram is also located on the blower plenum cover behind the dress panel 100 115V...
Страница 149: ...149 208 240V...
Страница 151: ...151 Blower only will not start...
Страница 152: ...152 Lights only will not illuminate...
Страница 153: ...153 UV Light will not illuminate...
Страница 154: ...154 Airflow Alert activating...
Страница 155: ...155 Filter Life Gauge not at 100 when new...
Страница 156: ...156 Contamination in the work area...
Страница 200: ...200 Figure 23 4 1 2 4 3 5 7 6 8 8...
Страница 201: ...201 END OF 3849920 Figure 23 5 9 10 11 12 13...