41478-01 4/23/2002
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© 2002 Hunter Fan Company
Operating Your Air Purifier
On/Speed Control: Rotate the Speed Control knob to set the desired speed. A setting
of zero (0) indicates that the unit is off, one (1) is low speed, two (2) is medium speed,
and three (3) is high speed. The fan speed can be adjusted at any time.
Pre-Filter and Filter Timers
This air purifier contains timers that indicate when the pre-filter and filter should be
changed. The timer automatically counts the number of hours that each filter has been
is use. When the pre-filter counter reaches 2000 hours (approximately three months of
use), the pre-filter indicator will be lit to show that the pre-filter should be changed.
When the HEPA filter counter reaches 8000 hours (approximately one year of use), the
HEPA filter indicator will be lit to indicate that the filter should be changed. The exact
life of the pre-filter and filter will depend upon the environment. If necessary, the filters
should be changed more frequently.
To reset the pre-filter or filter timers when one indicator (or both) is lit:
1. Change the filter and/or pre-filter as described in the Maintenance section of the
manual.
2. To reset the counter back to zero hours and turn off the indicator, simply press and
hold the filter reset key for three seconds. If both the pre-filter and filter indicators
are lit, the reset key will first turn off the pre-filter indicator. Then, you must release
the reset key and then press and hold the filter reset key again for three seconds to
turn off the filter indicator.
To reset the pre-filter or filter timers before the indicators are lit:
In some environments, you may want to change the pre-filter or filter more frequently
than indicated by the filter indicators. This procedure allows you to reset the pre-filter
or filter counter before the indicators are lit.
1. Change the filter and/or pre-filter as described in the Maintenance section of the
manual.
2. Now, you must choose which timer you want to reset. Press and hold the filter reset
key (approximately three seconds) until the pre-filter indicator flashes. Press the
reset key again to alternate between the two indicators. The timer that will be reset
is designated by the flashing indicator.
3. Once you have the correct indicator flashing, press and hold the reset key for three
seconds to reset that timer to zero hours. The indicator will stop flashing when it has
been reset. If needed, repeat these steps to reset the other timer.
