FN1AAF OptiClean™ Negative Air Machine and Air Scrubber Filter Replacement FN1AAF: HEPA Filter (40,000 hours of operation or 4 years)

For healthcare facilities, follow these steps (Fig.5):

• Move the power switch to the OFF position.

• Unplug the unit from the wall outlet.

• Listen to make sure the blower wheel has stopped spinning. Lay the unit on its back. Remove both the upper and lower doors.

• Put on Personal Protective Equipment.

• Remove the pre-filter from the unit.

• Use a 1/2-inch open-end or adjustable wrench to remove the two front bottom nuts from the all-thread rods on both sides.

• Loosen, but do not remove, the back bottom nuts.

• Slide the bottom HEPA filter supports down, and pull the two front all-thread rods upwards to get them out of the way of the filter removal.

• Remove the HEPA filter and immediately put it inside an approved containment bag. Dispose per facility guidelines for hazardous materials.

• Position the new HEPA filter into the unit with the gasket on the filter facing up, on the discharge side of the filter. Make sure the HEPA filter is centered and the edges align with the brackets on the top side and each side for a complete seal.

• Re-install the bottom supports, all-thread rods, and attach the bottom nuts.

• Tighten the nuts equally until the filter is held securely in place, and ensure the top HEPA filter gasket is significantly compressed against the mounting structure to assure no bypass air.

• Inspect the filter for a complete and tight fit. Loosen the nuts and reposition if necessary

• Replace the pre-filter.

• . Replace the doors. Lift the unit into an upright position.