Labconco Protector Filtered Glove Box - Manual (Page 47)

Chapter 6: Maintaining Your Glove Box
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test port. Connect this tube to the “downstream” sampling port of the
photometer.
Acceptance
The downstream average penetration shall not exceed 0.005 percent as
measured by the photometer.
Initial Certification
The Protector Filtered Glove Box has been leak tested at the factory with
helium gas at positive 1" w.g. pressure; leaks cannot exceed 1 x 10
-6 cc/sec.
The Filter Leak Test has been performed at the factory on both filters with no
particulate leaks greater than .005 percent. The filtered glove box should be
certified before use for the three tests listed under Re-Certification below. It
is also recommended to perform the Filter Leak Test again should there be
any damage caused during transport.
Re-Certification
Under normal operating conditions, the glove box should be re-certified at
least annually if serviced. The certifier should perform the following tests.
• Record airflow volume and glove box static pressure. Replace filters if
pressure doubles or airflow is reduced to half the original volume.
• Perform Filter Leak Test.
• Perform a Smoke Test to determine proper dilution rate inside the glove
box. Smoke removal should be completely purged in less than two
minutes at full blower speed.
Fluorescent Light Replacement
1. Disconnect the power. Refer to Figure 6-2 for replacement.
2. Locate the upper front panel.
3. Remove the front panel by removing two screws located at the bottom
of the front panel on each side.
4. Remove the old fluorescent lamps.
5. Reinstall the new fluorescent lamps and front panel by reversing the
steps above.