Changing The Filter - Hunter 37711 Owner's Manual

6. Place the front grill back onto the unit. First, line up the tab on the bottom
of the grill with the recess on the purifier base and then push the top of the
grill forward until it is closed. Refer to Figs. 6 and 7 (pg. 7). NOTE: This unit
will not operate unless the grill is in the correct position.
7. Plug in the air purifier.
8. To reset the counter to zero hours and turn off the indicator, simply press and
hold the PRE-FILTER RESET key for three seconds. Then, you must release
the reset key and then press and hold the pre-filter reset key again for three
seconds to turn off the filter indicator.

Changing the Filter

When the filter exceeds 2800 hours (approximately 4 to 6 months of use), the Filter indicator
will turn on as a reminder that you should replace the filter. (Refer to Filter Life Counters for
additional information, pg. 8.) 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 environment.
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.
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Air Purifier Maintenance
Fig. 9
11
PRE-FILTER
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