Labconco XPert Filtered Balance Stations 3962622 User Manual

Page 41

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Chapter 6: Maintaining Your Filtered Enclosure

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37

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.

7. Carefully remove the old bag stub using the single glove near the access

port. Reattach the retaining strap on the perimeter of the new bag at the
enclosure access port. Draw the old bag stub into the single glove and turn
the glove inside out. Double seal this glove and cut off the glove with the
contaminated bag stub inside.

8. Carefully install the new HEPA filter and uniformly tighten the two filter

clamp bolts until the HEPA filter gasket is compressed 50%.

9. Carefully fold and roll the new bag in four-inch pleats and push the bag

into the access port. Reinstall the retaining strap and bungee cords. Turn
the enclosure ON to draw a vacuum on the bag. Reinstall the front panel.

Figure 6-1

Bag-In-Bag-Out HEPA Filter Changing Procedure Diagram & Filter

Leak Test Diagram

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