Hunter 30756 Owner's Manual - Page 9

Operation Filter Life Counters The pre-filter and filter are critical to the proper operation of the air purifier. To help you know when to clean or change the filters, your Hunter Air Purifier has Filter Life Counters that will monitor the percentage of life your filter has left. Although the exact life of the filters depends on the environment, the table below gives typical usage times of the filters. Table 2: Typical Usage Times of the Filters Filter Type Activated Carbon Pre-Filter Cleanable Filter Typical Usage 1400 hours 2800 hours The display shows the percentage of life left since the counter was reset. NOTE: The percentage level drops in 5% increments. The values of the Pre-Filter and Filter Life Counters are stored in the air purifier's memory. The unit may be unplugged and moved or stored without losing the Pre-Filter and Filter Counter values. To properly track filter usage, the Pre-Filter and Filter Life Counters should be reset each time the filters are changed or cleaned. Refer to Changing the Pre-Filter (pg. 11) or Cleaning the Filter (pg. 12) for instructions on how to reset the counters. Locking/Unlocking the Keypad Once you enter the desired speed, you may want to lock the keypad to prevent accidental changing of the speed. When the keypad is locked, all keys will be disabled. If you press a key, the Keypad Locked Indicator will be displayed on the screen for 1-2 seconds. When the keypad is locked, the remote may still be used to adjust the speed or turn off the air purifier. To Lock or Unlock the Keypad: 1. To lock the keypad, press and hold the OFF/SPEED and TURBO keys simultaneously for 2-3 seconds. The Keypad Locked Indicator will appear on the display. Refer to Fig. 9. After releasing the keys, the Keypad Locked Indicator will disappear. 2. To unlock the key pad, press and hold the OFF/SPEED and Fig. 9 TURBO keys simultaneously for 2-3 seconds. The Keypad Indicator will disappear and the keypad will be functional.  41558-01