Labconco Precise Controlled Atmosphere and Basic Glove Boxes 5220131 - Manual (Page 38)

Chapter 6: Maintaining Your Glove Box
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7. Install the new pressure relief valve with the gasket to the inside.
Tighten the large nut.
8. Turn the glove box ON and re-certify the glove box.
9. Refer to Appendix A, Appendix B and Chapters 3 and 7 for
installation diagrams.
Service Valve and Pressure Gauge Replacement
1. Decontaminate the glove box interior, if required.
2. Wear appropriate protective equipment as determined by your Safety
Officer.
3. Turn the glove box and vacuum pump OFF.
4. Remove the valve or pressure gauge by loosening the large nut for the
valve or hardware for the pressure gauge. Remove the pressure hose
connected to the pressure gauge.
5. Replace with the new valve with the gasket inside or replace with the
new pressure gauge.
6. Tighten the large nut for the valve or the hardware for the pressure
gauge and re-attach the pressure hose to the pressure gauge.
7. Turn the glove box ON and re-certify.
8. Refer to Appendix A and Chapters 3 and 4 for installation diagrams.