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About White Dust:
Use of high mineral content hard water may cause a white mineral residue to accumulate on
surfaces in the room near the humidifier. The mineral residue is commonly called "white dust."
The higher the mineral content (or, the harder your water is), the greater the potential for white
dust. The white dust is not caused by a defect in the humidifier. It is caused only by minerals
suspended in the water.
How and Why To Use Demineralization Cartridges:
The HoMedics demineralization cartridge will help reduce the potential for white dust, a
deposit of minerals left behind from using hard water in your humidifier. The cartridge should
be replaced every 30 – 40 fillings. The cartridge may need to be replaced more often if
you are using very hard water. Replace the cartridge when you notice an increase in white
dust build-up. If white dust still forms around the humidifier after a new cartridge has been
installed, consider using distilled water. To purchase new demineralization cartridges, model
# UHE-HDC4, go back to the retailer (where you purchased your humidifier), or
visit www.homedics.com
If you live in an area with hard water, or use a water softener, we recommend using
distilled water for better results from your humidifier. Never use water softening
additives in your humidifier.
Installation Instructions
1. Remove demineralization cartridge from packaging and let it soak
in water for 10 minutes.
2. Remove the tank from humidifier base and turn it over.
3. Unscrew the tank cap by turning the cap counter-clockwise.
4. Fill the tank with water as shown in the How to Fill section of the instructions included
with your humidifier.
5. Add the soaked demineralization cartridge into the tank.
6. Replace the tank cap by turning clockwise.
7. Place the tank back on the base.
Demineralization Cartridge
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Cleaning and Care
CAUTION: Before cleaning the unit, turn power off and unplug unit from the outlet.
To Clean the Tank
Fig. 8
Remove the tank from the humidifier base by lifting it
from the main unit. Unscrew the tank cap and rinse
inside the tank with clean water.
To remove any scale or build-up, use a 50/50 mixture of
vinegar and lukewarm water to clean the inside of the
tank. (Fig. 8)
Suggestion: Clean the water tank once every two to
Fig. 9
three weeks, depending on your water conditions.
To Clean the Ultrasonic Membrane
Pour a 50/50 mixture of vinegar and water on
the surface of the ultrasonic membrane, then soak
Fig. 10
for five minutes. Brush clean with a soft-bristle brush
(not included) and rinse. NEVER touch the ultrasonic
membrane with your fingers as the natural oils in skin
can damage the membrane. (Fig. 10)
Suggestion: Clean the membrane once
every two to three weeks, depending on your water
conditions.
NOTE: Never submerge the base in water or any liquid.
Fig. 11
To Clean the Surface
Clean the surface of your humidifier with a clean, damp,
soft cloth as often as needed. (Fig. 11)
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