Labconco TXE Tall XPerEnclosure 3892022 - Manual (Page 26)

Chapter 6: Maintaining Your TXE
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Annually

Replace the fluorescent lamps.

Have the enclosure validated by a qualified certification technician. See
Certification and Recertification in Chapter 6.
Determination of When to Replace HEPA Filters
The HEPA filters in the TXE gradually accumulate airborne particulate matter and
powders from the enclosure and room. The rate of accumulation will depend upon
the cleanliness of the room air, the amount of time the enclosure is operating, and
the nature of work being done in the enclosure. In typical installations and usage,
the HEPA filters will last two to five years before requiring replacement. Replace
HEPA filters when face velocity in the largest opening between doors drops below
the recommended 80-100 fpm velocity, and the speed control is adjusted to full
speed. Replace HEPA filters if it fails the HEPA Filter Leak Test in Chapter 6.
How to Install a New HEPA Filter with the
Bag-In/Bag-Out Procedure
The TXE includes a true bag-in/bag-out filter disposal system for safely removing
the HEPA filter and protect the worker from toxic powders and particulates. See
Figures 6-1 for the Bag-In/Bag-Out Procedure. For your safety, wear appropriate
personal protective equipment during the change of HEPA filters.
Do NOT contact blower wheel while still in motion.
NE PAS être en contact avec la roué du ventilateur tant qu’il est
en marche.
1. With the enclosure OFF, remove the front panel secured by two screws on
top of the enclosure.
2. Remove the bungee cords and retaining strap on the bag and extend it out.
The retaining strap provides an extra level of safety even though the
enclosure is under negative pressure when the blower is on.
3. Loosen the two filter clamp bolts with a 9/16" socket securing the HEPA
filter. See Figure 4-1 and 4-2.
4. Place both arms in the rear gloves of the bag, and carefully draw the HEPA
filter out of the enclosure. Rest the HEPA filter on the floor, table or cart.
Remove arms from bag gloves.
5. Create two seals between the enclosure bag access port and the old HEPA
filter. Seals can be heat sealed or sealed with tie wraps. Cut off the bag
between the two seals and leave the bag stub on the access port to the
enclosure.
6. Place the new HEPA filter in the new bag. Then place the new bag and
new HEPA filter over the old bag stub and onto the enclosure access port.
!