We recommend cleaning the humidifier weekly, more often if you have hard water
or notice a build-up of impurities or detect unpleasant odors.
Cleaning involves two steps SCALE REMOVAL and DISINFECTING. Be sure to
perform these in the proper order to avoid harmful
chemical interactions.
• First, turn off and unplug the humidifier. Wait at least
10 minutes for the unit to cool.
• Remove the Water Tank.
• To remove the Power Unit, pull the Latch to release
(found under the Water Tank) and lift the Power Unit
(Fig. 6). Turn upside-down to check condition of
heating element. If build-up of minerals is heavy, follow
the CLEANING THE HEATING ELEMENT instructions.
Set the Power Unit aside.
• Empty any water from the Base and Removable Tray.
STEP ONE:
SCALE REMOVAL
REMOVABLE TRAY:
1. Fill the Removable Tray (Fig. 6) with
either:
• 1 cup (8 oz.) undiluted white vinegar
or
• Use DuraRinse
®
Humidifier Cleaner,
part no. AC-816, following bottle
instructions.
2. Let solution stand for 20 minutes.
3. With the vinegar or DuraRinse
®
in the
Removable Tray clean all interior
surfaces with a soft cloth or brush to
help remove scale.
4. Rinse the Removable Tray thoroughly
with water to remove scale and
cleaning solution.
STEP TWO:
DISINFECTING
WATER TANK/REMOVABLE TRAY
1. Fill the Water Tank with:
• 1 teaspoon of household bleach
and
• 1 gallon of water.
Pour some of this solution into the
Removable Tray.
2. Let solution stand for 20 minutes.
3. Rinse with water until the odor of
bleach is gone.
NOTE: THE USE OF OTHER WATER
TREATMENT PRODUCTS, CHEMICALS,
SOAPS, DETERGENTS OR ABRASIVE
CLEANSERS NOT RECOMMENDED IN
THE MANUAL MAY CAUSE DAMAGE TO
THE HUMIDIFIER OR AFFECT
PERFORMANCE.
-910 Fig.6
Fig.6
Latch
Removable
Tray
Base
Power
Unit
WEEKLY CLEANING
HU4074.01 DH-975 Eng OM 8/3/01 12:57 PM Page 7
