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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
How to Fill
CAUTION:
Before filling unit with water, turn the power off and unplug the unit from the outlet.
NOTE:
Always use two hands to carry the water tank.
1. Grasp tank handle and lift up from humidifier base. (Fig. 3)
NOTE: Mist nozzle is removable for cleaning. Be sure to remove
mist nozzle before turning tank upside down for filling.
2. Turn the tank upside down—remove the tank cap by turning it
counter-clockwise. (Fig. 4)
3. Fill the water tank with clean, cool (not cold) water. We
recommend using distilled water if you live in a hard water area.
(Fig. 5)
4. Replace the tank cap by turning clockwise until tight. (Fig. 6)
5. Install the tank back on the base of the unit. Make sure the tank
is firmly seated and mist nozzle is in place. (Fig. 7)
NOTE: It is normal to have a small amount of water in the base
during and after use.
Fig. 3
Fig. 5
Fig. 4
Fig. 6
Fig. 7
