Labconco Purifier Logic+ 30231 Series User Manual page 53

Original instructions
PROBLEM
Airflow Alert goes
off and/or there is a
slight decrease in
filter life remaining
gauge
Contamination of
work in the cabinet
Product Service 1-800-522-7658
CAUSE
HEPA filter loading
Blockage of the
return air slots or
grille
Blockage of the
exhaust outlet
Blockage or
restriction under the
work surface
Improper technique
or procedure for the
biosafety cabinet
Restriction of the
return air slots or
grille – blockage of
the exhaust outlet
External factors are
disrupting the cabinet
airflow patterns or
acting as a source of
contamination
Cabinet is out of
adjustment/HEPA
filter(s) are defective
Chapter 7: Troubleshooting
CORRECTIVE ACTION
The gauge reading steadily decreases as
the cabinet is used.
Check all return air slots and grilles to
ensure that they are not blocked or
restricted.
Ensure that the exhaust outlet is not
blocked or restricted.
Ensure that the towel catch and plenum
beneath the work surface are
unobstructed.
See "Use of the cabinet" section in the
manual.
Ensure that all return air slots, grilles
and the exhaust outlet are unobstructed.
See "Working in the Biosafety
Cabinet" section of this manual.
Have cabinet recertified.
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