Document: 333D012G
5-18-2007
- 25 -
Filter leak test procedure – Exhaust filter
1.
Turn on cabinet blower.
2.
If the cabinet has a CEC or HEC, remove the access panel for leak scanning the exhaust filter. If the cabinet is
exhausting to the room, remove the exhaust filter protector.
3.
The port for measuring upstream concentration is located on the top rear left hand side of the cabinet.
WARNING
If the cabinet has been in use then it must be decontaminated before removing the plug.
4.
Introduce the aerosol challenge to the cabinet blower at the front work surface perforation.
5.
Perform filter leak test per NSF 49.
6.
Repair any discovered leaks.
Airflow smoke pattern test
We recommend that qualified technicians verify the direction of airflow within your cabinet before the cabinet is
used. The direction of airflow should also be verified at prescribed intervals as specified by an industrial hygienist,
safety officer or other qualified person. NSF International details the steps for performing the airflow smoke pattern
test in their Standard 49.
Maintenance Notes
Cleaning the Work Area
Spills that fall through the perforated grilles can be removed through the drain valve after proper decontamination.
To wash the drain pan under the work surface, lift up, surface decontaminate and remove the solid work surface
and work surface supports. This provides unobstructed access to the drain pan for easy cleaning. Remember that this
area must be assumed to have contamination, so use caution in the way you approach the task. Make sure you close
the drain valve when you are finished cleaning the drain pan.
Ultraviolet Germicidal Lamp (Optional)
As reported in other sections of this manual, UV germicidal lamps lose their effectiveness over time and should be
replaced when their intensity at the work surface drops below 40 microwatts per square centimeter at a wavelength of
253.5 x 10
-9
meters.
If your cabinet has a germicidal lamp, frequently measure its intensity at the geometric center of the work surface
with an ultraviolet light meter. The visual appearance does not indicate UV effectiveness.
Checking the Magnehelic Gauge or Optional Air Flow Monitor (AFM)
Changes in areas surrounding the laboratory may produce unexpected dust or other conditions that affect the
filters. To maintain filter integrity and good cabinet operation, check the Magnehelic Gauge and AFM periodically.
Содержание SterilGARD III Advance
Страница 35: ...Document 333D012G 5 18 2007 34 Appendix...
Страница 38: ...Document 333D012G 5 18 2007 37 Dimensional Drawing Standard Configuration SG403A...
Страница 39: ...Document 333D012G 5 18 2007 38 Dimensional Drawing Standard Configuration SG603A...
Страница 41: ...Document 333D012G 5 18 2007 40 Interior View Exterior View Cable port plug not shown...
Страница 42: ...Document 333D012G 5 18 2007 41 Ladder Schematic SG403A...
Страница 43: ...Document 333D012G 5 18 2007 42 Ladder Schematic SG603A...
