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41960-01 10
Air Purifier Maintenance
6. Install the grill back onto the unit. First, line up the tabs on the bottom of the grill
with the openings on the purifier base and then push the top of the grill forward
until it is closed.
7. Plug in the air purifier. NOTE: This unit will not operate unless the grill is in the
correct position.
8. Finally, reset the Pre-Filter Counter by pressing the PRE-FILTER RESET
key for 2 seconds. The Pre-Filter Counter will return to 100% and the Pre-
Filter indicator will stop flashing.
Changing the Filter
When the filter exceeds 8000 hours (approximately 1 year of use), the Filter Life Counter
will display 0% life remaining and the Filter indicator will flash (refer to Filter Life Counters
for additional information, pg. 7). This is a reminder that you should check the filter and
replace if necessary. The proper time to change the filter depends on usage and the environ-
ment. Use the following list to help determine if the filter should be changed:
• Compare the color of the filter to the color coded chart on the inside of the housing. If the
filter color matches the darkest color on the chart, you should replace the filter.
• If you notice a decrease in air output or an increase in noise at any time during normal
operation, the filter may be clogged. Replace the filter to return to normal operation.
To change the filter and reset the Filter Life Counter:
1. First, turn off and unplug the air purifier.
2. Next, remove the front grill. Place your fingers in the recesses on either side of the
top of the grill and pull firmly.
3. Gently pull on the filter to remove it from the unit. While removing the filter,
note the directional arrows printed on the side of the filter. The new filter will be
installed with the same orientation. Once removed, the used filter can be dis-
carded.
4. Remove the new filter from its wrapping and look at the directional arrows
printed on the side of the filter. Install the filter with arrows pointing towards
the unit. Press the filter firmly into the air purifier. To avoid damaging the
filter media, you should press on the frame of the filter only.
5. Reinstall the grill by first lining up the tabs on the bottom of the grill with the
openings on the air purifier base and then pushing the top of the grill forward
until it is closed.
41960-01_rev 1-13-06.pmd 1/13/06, 4:50 PM10