Labconco Class I Enclosure Models 3980423 - Manual (Page 50)

Chapter 6: Maintaining Your Filtered Enclosure
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Initial Certification
The filtered enclosure has been certified at the factory for an inflow velocity of
90±10 fpm along with the HEPA Filter Leak Test. The filtered enclosure should
be certified for the proper inflow velocity. A HEPA filter leak test should be
performed once installed to verify there has not been any damage incurred during
transportation.
Re-Certification
Under normal operating conditions, the enclosure should be recertified at least
annually if serviced. The certifier should perform the following tests.

Inflow Velocity Test

HEPA Filter Leak Test
In addition, the following tests should also be performed at the user’s discretion:

Measure of Line Voltage and Current

Smoke Test to determine proper airflow patterns

Lighting Intensity Test (when appropriate)

Noise Level Test (when appropriate)

Vibration Test (when appropriate)
Fluorescent Light Replacement
1. Disconnect the power.
2. Locate the small light reflector located under the control panel shown in
Figure 6-2.
3. Remove the light reflector support by removing two Phillips screws on the
bottom of the light reflector.
4. Rotate and remove the old fluorescent lamp.
5. Reinstall the new fluorescent lamp and light reflector in reverse order.
6. Power the unit up and try the new fluorescent lamp.
UV Light Replacement
1. Disconnect the power.
2. Locate the UV lamp located inside the enclosure.
3. Surface decontaminate the old UV light before handling it.
4. Rotate and remove the old UV lamp.
5. Reinstall the new UV lamp.
6. Power the unit up and try the new UV lamp (the UV closure panel must be
installed).