Sharp KC-830U KC-830U Operation Manual - Page 18

CARE AND MAINTENANCE When cleaning the unit, be sure to first unplug the power cord, and never handle the plug with wet hands. Electrical shock and/or bodily injury may occur as a result. HUMIDIFYING FILTER Care Cycle Once a month or when the Filter Indicator Light is on. Frequency of maintenance cycle will depend on the hardness or the impurities of the water that you use; the harder the water the more often descaling will be necessary. Pay attention not to spill water when cleaning the filter. 1 Remove the Water Tank and Humidifying Tray. (See E-15) 2 Remove the Humidifying filter from the Humidifying Tray. Avoid spilling water from the Humidifying Tray. 5 Rinse the Humidifying filter repeatedly with lukewarm water to remove all the solution residue. Inadequate rinsing may cause odor and affect the performance and/or appearance of the unit. * Do not scrub the Humidifying filter, rinse gently under lukewarm water only. 3 Preparing the descaling solution. Citric acid, available at some drugstores, or 100 % bottled lemon juice are used for descaling. Choose either one to use, and prepare the descaling solution. Dissolve 3 teaspoons of citric acid and 2 1/2 cups of lukewarm water in a suitable container, and stir well. 100 % bottled lemon juice can be used for descaling. Use only 100 % bottled lemon juice with no pulp (strain juice if necessary). Combine 1/4 cup lemon juice and 3 cups of lukewarm water in a container large enough to hold the Humidifying filter and stir well. 4 Pre-soak the Humidifying filter in the solution for 30 minutes before cleaning. When using lemon juice, it is recommended to pre-soak longer than citric acid. 6 Attach the Humidifying filter to the Humidifying Tray, and replace the Humidifying Tray in the unit. •The Humidifying filter does not need to be oriented in any particular position(forward/backward, up/down) •When not using the unit for a long period of time, dry the Humidifying filter completely before replacing. 7 Plug in the unit, turn power ON, and press the Filter Reset Button on the display for more than 3 seconds to reset. You may notice reddish-brown or white deposits forming on the surface of the Humidifying filter. These impurities (calcium, etc.) are due to the impurities contained in tap water; this is not a defect. Replace the Humidifying filter when it is covered completely in white deposits. E-16