Labconco 3970202, User Manual

Page: 32 / 66

27
Chapter 6: Maintaining Your Filtered PCR Enclosure
Routine Maintenance Schedule
Weekly
•
Wipe down the interior surfaces of the enclosure with a
disinfectant or cleaner, depending upon the usage of the
unit and allow to dry.
•
Using a damp cloth, clean the exterior surfaces of the
enclosure, particularly the front and top to remove any
accumulated dust.
•
Operate the exhaust system, noting the airflow velocity out
the front of the enclosure using a source of visible smoke.
Airflow monitors are recommended for constant
monitoring.
Monthly (or more often as required)
•
Determine the actual downflow velocity 6" below the upper
diffuser of the enclosure where the average reading should
be at the specified velocity. (Use calibrated thermal
anemometer or other approved apparatus). Airflow alarms
are recommended for constant monitoring.
•
All weekly activities.
•
Check downflow velocity. Increase speed control or
change HEPA filter when downflow velocity of the
enclosure drops below the recommended speed for your
facility or if the airflow alarm monitor alerts you. An
airflow monitor is recommended.
Annually
•
Replace UV lamps if equipped.
•
Have the enclosure validated by a qualified certification
technician. See Certification and Recertification to follow
in
Chapter 6 .
•
All monthly activities.
•
Change prefilter.
When to Replace HEPA Filters
The HEPA filter in the Purifier Filtered PCR Enclosure gradually
accumulates airborne particulate matter from the room. The rate of
accumulation will depend upon the cleanliness of the room air, and
the amount of operational time the enclosure is operating. In
typical installations and usage, the HEPA filters will last two to
five years before requiring replacement. Replace HEPA filters
HEPA