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Chapter 6: Maintaining Your Filtered Enclosure
How to Install a New HEPA Filter
NOTE:
The enclosure must be properly decontaminated before
servicing the HEPA filter. Only a qualified certifier
should service the HEPA filter. After the HEPA filter is
replaced, the enclosure MUST be certified. See Figure 6-
1.
1. Unplug the enclosure.
2. Remove the front panel by loosening the two screws that
secure it, and then remove the filter access cover.
3. Using a 9/16" deep socket, loosen the filter clamp bolts
located on top. Refer to Figures 4-1 and 4-2.
4. With the clamp bolts loosened, the HEPA filter-clamping
frame should be clear of filter. Carefully pull the filter
straight out of the enclosure and discard properly.
5. With the filter removed, inspect the clamping frame and the
frame of the cabinet for damage.
6. Cover the surface of the new HEPA filter gasket with a
light coating of silicone grease, if desired.
7. Install the new HEPA filter by pushing it straight into the
cabinet, ensuring that it is correctly oriented with the gasket
facing up on the exhaust side of the enclosure. The filter
gasket is surrounded by a negative pressure plenum and the
gasket will not leak. Be sure the filter fits properly.
8. Tighten the clamp bolts uniformly until the filter gasket is
properly compressed against the frame. Inspect the seal
thoroughly before proceeding.
9. Reinstall the filter access cover and the front panel.
10. Plug the enclosure in and have it recertified before use.
CAUTION: The filter clamp bolts should only be tightened
enough to ensure a proper seal at maximum tightness. The
filter gasket should be compressed 50% or less.
Summary of Contents for 3980200
Page 2: ......
Page 13: ...8 Chapter 2 Prerequisites ...
Page 17: ...12 Chapter 3 Getting Started Figure 3 1 Filtered Enclosure Installation ...
Page 67: ...62 Chapter 7 Accessorizing and Modifying Your Filtered Enclosure ...
Page 82: ...77 Appendix C Filtered Enclosure Specifications C 1 ...
Page 83: ...78 Appendix C Filtered Enclosure Specifications C 2 ...
Page 84: ...79 Appendix C Filtered Enclosure Specifications C 3 ...
Page 85: ...80 Appendix C Filtered Enclosure Specifications C 4 ...
Page 92: ...87 ...
Page 93: ......