Labconco Purifier Filtered PCR Enclosures 3970425 - Manual (Page 29)

Chapter 6: Maintaining Your Filtered PCR Enclosure
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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.

Verify proper operation of the UV closure panel switch.

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 when
downflow velocity drops below the recommended 30-65 fpm velocity and the
speed control is adjusted to full speed. Replace HEPA filter if it fails the HEPA
Filter Leak Test in Chapter 6.
HEPA