EuroFlow EF & EF/B
Biological Safety Cabinet
Clean Air Techniek B.V.
UM-EFAB-EN10.doc
56
8
Small maintenance and testing
BIOLOGICAL DANGER
BE CAREFUL!!
Before starting service with the cabinet a written declaration “that the
cabinet is decontaminated” must be present. The responsible person
(laboratory supervisor) will decide if the cabinet has to be decontaminated so
that when servicing the installation and the HEPA-filters there is no danger
for the service engineer, labour personnel, the laboratory and the
surroundings of the cabinet. If necessary disinfect the installation. For more
information
Appendix II: Disinfection on page 67
.
CYTOTOXIC DANGER
When cytotoxics are used, see
§2.5 Cytotoxic danger (EF/B only) on page
10.
Only the responsible safety officer (biological safety officer or the responsible
examiner) can decide if this procedure is valid or not. Additional standard
operation procedures can be necessary.
8.1
Periodic maintenance
A periodic maintenance has to take place regularly. To a certain extent, this depends on the
frequency of use of the cabinet. Contact your service organization for advice.
Guideline for testing and maintenance given by Clean Air Techniek B.V. is every 12 months at
least.
Validate the system on safety;
Check for correct functioning of the electrical system;
Check the HEPA filter for efficiency and leakage;
Check the installation and the exhaust system for leakage;
Verification/calibration of the assembled air speed sensor(s);
Check and adjust the alarm system.
Check if the air direction of the inflow is in direction of the front aperture and laminar over the
whole area of the front aperture;
Check if the air direction of the downflow is downwards in direction of the work surface and
laminar over the whole work surface.
8.2
Replacement of the pre-filter
(See
§4.9 Drip tray/pre-filter on page 16
).
Tip:
This procedure must be done with a running fan. Then the under pressure in the working area will
stay. This is an extra safety aspect. Since this procedure can be done in a short time, the extra
pollution of the HEPA filters will be low.
This procedure is described for a right-hand orientated person. The described left hand may be
changed for a right hand and right for left hand as long as this is done consistently (this procedure
needs consistence due to contamination danger).
