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a D:GROUP Company
PROBLEM
During work, an alarm sounds, the
laminar airflow works regularly,
and the velocity of the protective
barrier is reduced by about 30%.
Alarm: "barrier and exhaust fan"
During work, the laminar airflow
seems to work regularly, but the
alarm
"Barrier
velocity"
sounding.
00055EN Rev.10 – 12/2011
CAUSE
The exhaust fan is out of order
Exhaust and main filters are
clogged
starts
REMEDY
See
the
above-mentioned
problem "Alarms: low barrier
velocity".
IMPORTANT: if this problem
occurs, the material present in
the work area is not damaged,
the
laboratory
is
protected
by
the
barrier assured by the main fan
and by the design characteristics
of these cabinets.
If necessary, you can continue
working under protection, but
avoid
quick
movements
large flames and do not place
large objects under the airflow.
Replace HEPA filters
sufficiently
protection
and
31
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