WST7503 COOL MIST HUMIDIFIER
14. DO NOT allow the Cool Mist Outlet to directly face the wall. Moisture could
cause damage, particularly to wall paper.
15. The Humidifier should be unplugged when not in use.
16. NEVER tilt, move, or attempt to empty while the Cool Mist Humidifier is
operating. Press the ON/OFF Button to turn the unit OFF and unplug before
removing the Water Tank and moving the unit.
17. This Humidifier requires daily and weekly maintenance. Refer to daily and
weekly cleaning procedures. Use only cleaners and additives recommended by
the manufacturer.
18. NEVER use detergents, gasoline, glass cleaner, furniture polish, paint thinner,
or other household solvents to clean any part of the Humidifier.
19. Excessive humidity in a room can cause water condensation on windows and
some furniture. If this happens, turn the Humidifier OFF.
20. Do not use Humidifier in an area where humidity level is in excess of 50%. The
built-in digital humidistat is for reference only.
21. DO NOT attempt to repair or adjust any electrical or mechanical functions on
this unit. Doing so will void your warranty. The inside of the unit contains no
user serviceable parts. All servicing should be performed by qualified
personnel only.
22. Never place Humidifier housing under water flow or immerse in liquids.
23. Do not plug in the cord with wet hands: electric shock could result.
24. Do not block air inlets or outlet grills.
25. Do not fill through openings other than the Water Tank.
26. Keep Humidifier upright at all times. Do not turn it on its side or
upside down.
27. Never try to open or remove the Cool Mist Outlet Cover.
READ & SAVE THESE INSTRUCTIONS
FOR HOUSEHOLD USE ONLY
2
CONSUMER SAFETY INFORMATION
NOTE: This is an electrical appliance and requires attention when in use.
NOTE: If moisture forms on the walls or windows of the room, turn OFF the
Humidifier. The room already has plenty of humidity and additional moisture
may cause damage.
NOTE: DO NOT block air inlets or Cool Mist outlet.
POLARIZED PLUG
This appliance has a polarized plug (one blade is wider than the other). To reduce
the risk of electric shock, this plug is intended to fit into a polarized outlet only one
way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not
fit, contact a qualified electrician. Do not attempt to modify the plug in any way.
SHORT CORD INSTRUCTIONS
A short power-supply cord is provided to reduce the risk resulting from becoming
entangled in or tripping over a longer cord.
Do not use an extension cord with this product.
ELECTRIC POWER
If the electrical circuit is overloaded with other appliances, your appliance
may not operate properly. It should be operated on a separate electrical
circuit from other appliances.
PLASTICIZER WARNING
CAUTION: To prevent Plasticizers from migrating from the finish of the countertop
or tabletop or other furniture, place NON-PLASTIC
coasters or placemats between the appliance and the finish of the countertop
or tabletop.
Failure to do so may cause the finish to darken, permanent blemishes may occur or
stains can appear.
3
Getting To Know Your Westinghouse
WST7503 Cool Mist Humidifier
Product may vary slightly from illustrations.
Water Tank
Handle
Water Tank
(P/N 40270)
Wick Filter (2 Pc. Set)
(P/N WST7505)
Water Tank
Rubber Ring
(P/N 40265)
Water
Tank Lid
(P/N 40266)
Carry
Handle
Control
Panel
Cool Mist
Outlet/
Cover
Humidifier/
Water Tank
Housing
LCD
Display
Air Inlets
Main
Housing
Wick Filter Holder
(P/N 40271)
Polarized
Plug
Figure 1
Water Basin
(not shown)
4
INTRODUCTION
Your Cool Mist Humidifier is designed to dispense a cool mist quietly and efficiently
while maintaining your preferred level of humidity. Enjoy continuous cool air misting
or program the Humidifier to run from 1 to 8 hours with automatic shut off.
NOTE: The Cool Mist Humidifier holds 1.2 gallons of water and will run for
12 hours of continuous operation before refilling is necessary.
NOTE: A humidity level below 20% can be unhealthy and uncomfortable. The
recommended humidity level is between 40% and 50%.
BEFORE USING FOR THE FIRST TIME
1. Be sure the Humidifier is switched to OFF and the unit is unplugged.
2. Choose a suitable location for the Cool Mist Humidifier on a flat surface, with the
front of the Cool Mist Outlet at least 6 feet 6 inches from the nearest wall. DO
NOT place the Humidifier on a finished floor or near furniture, which can be
damaged by moisture or water. NEVER place the Humidifier in a closed room.
3. Lift the Cool Mist Humidifier using the Carry Handle and place on a moisture-
resistance surface.
FILLING THE WATER TANK
1. Use the Water Tank Handle (on the top of the Water Tank) to lift the Tank straight
up and out of the Humidifier Housing. Turn the empty Tank upside down; unscrew
the Water Tank Lid by turning counter-clockwise, Remove the Lid.
2. Fill Tank with cool, tap water or bottled distilled water.*
*In areas where tap water is hard, it is recommended that distilled water be used.
CAUTION: The Water Tank is delicate and may crack if dropped or bumped. To ensure
proper performance of your Cool Mist Humidifier, use care when filling and
transporting the Water Tank.
WARNING: DO NOT fill with warm water as this may cause leaking.
IMPORTANT: Check the inside of the Lid to make sure the Rubber Seal Ring is correctly
positioned before replacing the Lid.
3. Make sure the Rubber Ring is in position, sitting flat in the groove on the inside
of the Lid. Twist the Lid clockwise and firmly lock onto the Tank.
4. Firmly grasping the Water Tank Handle, re-insert into the Humidifier Housing
inside the Water Basin. The Tank will immediately begin to empty into the Water
Basin of the Humidifier.
NOTE: Replace the Water Tank so that the Water Tank Handle faces left.
5
OPERATING INSTRUCTIONS
CONTROL PANEL
Figure 2
ON/OFF/FAN
TIMER
Fan Speed:
Lo, Med, Hi
Safety Auto Shut Off /
Refill Water
LCD DISPLAY
Figure 3
Fan
Timer Set
Current
Room
Humidity
Preset
Humidity
Level
Your Humidifier is operated directly from the Control Panel located on the top of
the unit. Timer Set, Fan speed, remaining time, current room humidity, preset
humidity level: are all shown on the LCD Display.
1. Plug the Cool Mist Humidifier into a 120V AC electrical outlet. The current
room humidity will illuminate.
2. Press the ON / OFF Button to turn the unit ON.
3. The Cool Mist Humidifier displays current humidity and the previously preset
humidity. When the current humidity level is less than the preset humidity
level, a fine mist will moisten the air until the preset humidity level is reached.
The Humidifier will automatically cycle ON and OFF as it maintains the proper
humidity level.
NOTE: Make sure the front of the Cool Mist Outlet is at least 6 feet 6 inches from
the nearest wall.
NOTE: If the current room humidity is greater or equal to the preset humidity level,
the unit will not operate.
NOTE: If the water droplet appears on the LCD Display, check the water level in the
Water Tank and refill if necessary. It is recommended that the Water Tank be
refilled BEFORE it runs completely empty.
4. Press the ON/OFF Button again to turn the unit OFF.
6
ADJUSTING THE FAN SPEED
NOTE: The Cool Mist Humidifier has a 3-Speed Fan that can be easily adjusted to provide
individual comfort.
1. Plug the Cool Mist Humidifier into a 120V AC electrical outlet.
2. The Display will show LOW FAN. Each time the ON/OFF/FAN Button is pressed, the
Display will advance from LOW (1 Bar) to MEDIUM (2 Bars) to HIGH (3 Bars) FAN
Speeds. The Fan will begin to operate immediately.
3. Press the ON/OFF/FAN Button to turn the unit OFF.
ADJUSTING THE HUMIDITY
NOTE: The Cool Mist Humidifier allows you to adjust humidity levels between 30% to 90%.
For maximum comfort, the recommended humidity level is between 40% and 50%.
1. When the Cool Mist Humidifier is plugged in, the Display will show the current
room humidity.
2. Press the ON / OFF Button to turn the unit ON. .The preset humidity level will
be shown.
3. To adjust the current room humidity, press ‘+’ or ‘-’ Button to increase or decrease
the humidity level. Each time the Button is pressed, the SET humidity level % on
the right side of the LCD Display will increase or decrease 1%. Hold the Button to
advance the setting continuously. When the desired humidity level is shown,
release the Button.
NOTE: If the current room humidity is greater or equal to the preset humidity level, the unit
will not operate.
NOTE: If moisture forms on the walls or windows, turn the Humidifier OFF.
HARD WATER
Hard water contributes to inefficient humidifier results. Hard water forms a scale of
limescale deposits that can cause a film on the Water Basin and Water Tank and cause
the water to become cloudy.
NOTE: In areas where tap water is hard, It is recommended that distilled water be used.
7
SAFETY AUTO SHUT OFF
NOTE: If the Water Tank and the Water Basin is empty, the water droplet warning
symbol will illuminate on the LCD Display to signal the Water Tank should be
refilled. The current room humidity will be displayed, and the Humidifier will
automatically shut itself OFF.
If this happens, follow these Reset Instructions to re-start your Humidifier:
1. Unplug the unit. Remove and refill the Water Tank, replace the Tank into the
Humidifier Housing on the Water Basin.
2. Follow “Operating Instructions” outlined in this Owner’s Manual to
restart operation.
USING THE PROGRAMMABLE TIMER
The Cool Mist Humidifier can be programmed to run for a preset duration and then
automatically turn itself OFF after the set amount of time.
1. Press the TIMER Button to select run time of the unit. Each time the Button is
pressed, the Display will advance from 8hr, 4hr, 2hr or 1hr and then back to
CONTINUOUS RUN.
NOTE: The Cool Mist Humidifier holds 1.2 gallons of water and will run for
12 hours of continuous operation before refilling is necessary.
2. The clock symbol will flash for 5 seconds after the Timer selection is made.
The Timer program is now set for the selected duration. The Display will revert
back the current room humidity.
3. The clock symbol will illuminate in the Display to show the TIMER has been
set. After the pre-determined length of time has passed, the Humidifier will
automatically shut itself OFF. The TIMER Button may be pressed at any time to
show “time remaining” on the LCD Display.
4. If the clock symbol is not illuminated, the Humidifier is set to CONTINUOUS
RUN and will continue to operate as long as the Water Tank has an adequate
amount of water to run, or until the Humidifier reaches the desired set
humidity.
8
DISASSEMBLY/REASSEMBLY DIAGRAM
Water Tank
Handle
1. Remove
Water Tank
Water Tank Lid
Cool Mist
Outlet/
Cover
Main Housing
2. Press Release
Button on Side
Panel
3. Press Release
Button on Side
Panel
4. Pull Cool Mist
Main Body
straight up and
off Water Basin
Wick
Filter
Holder
Water Basin
(P/N 40272)
Figure 4
9
USER MAINTENANCE INSTRUCTIONS
This appliance requires little maintenance. It contains no user serviceable parts.
Do not try to repair it yourself. Any servicing requiring disassembly other than
cleaning, must be performed by a qualified appliance repair technician.
CARE AND CLEANING
The following maintenance procedures must be routinely followed in order to
ensure proper, efficient operation of your Humidifier.
IMPORTANT: The unit WILL NOT WORK CORRECTLY if it is not cleaned and
maintained properly. Proper cleaning is absolutely essential to avoid algae or
bacteria build-up.
When the unit is in use, daily and weekly maintenance is recommended to
prevent scale buildup and micro-organisms from growing on both the Wick
Filter and the Water Basin. This ensures that maximum efficiency will
be achieved.
REPLACING THE WICK FILTER
Through normal use, waterborne minerals and sediment become trapped in the
Wick Filter turning the Filter brown in color, a sign that changing is needed. The
harder your water, the greater the amount of minerals in the water, and the more
often you will need to change your Wick Filter. Regular Filter replacement is
necessary to ensure optimal Humidifier performance.
To replace the Wick Filter, follow the steps below.
1. Press the ON/OFF Button to turn the unit OFF and unplug the unit.
2. Use the Water Tank Handle (on the top of the Water Tank) to lift the Tank
straight up and out of the Water Tank Housing.
3. Press the Release Buttons on both side panels and lift the Main Body straight
up and off the Water Basin.
4. Discard the old Wick Filter and replace with a new 2-Piece Wick Filter. One
new Wick Filter will fit around the curved area; the other fits along the flat
back area of the Filter Holder.
5. Following the OPERATING INSTRUCTIONS outlined previously in this Owner’s
Manual, program your Cool Mist Humidifier to run for 30 minutes, allowing the
Humidifier to reach maximum output.
NOTE: The Cool Mist Humidifier uses Model WST7505 2-Piece Replacement
Wick Filter.
10
Instructions for Disassembly
1. Turn the unit off and unplug the Humidifier from the electrical outlet.
2. Use the Water Tank Handle (on the top of the Water Tank) to lift the Tank straight
up and out of the Water Tank Housing. Remove Water Tank Lid and discard water.
3. Press the Release Button on both side panels and lift the Main Body straight up
and off the Water Basin.
4. Remove the Wick Filter Holder.
5. Tip the Water Basin over a sink to empty the water. Take care not to immerse the
plug in water. Rinse the Water Basin thoroughly with clear tap water to remove
any sediment and dirt. Wipe the Water Basin, Water Tank and Cool Mist Outlet
clean with a lint-free cloth or paper towel.
6. If necessary, replace the Wick Filter(s) following the instructions outlined in the
REPLACING THE WICK FILTER section of this manual. Replace the Wick Filter
Holder into the recessed area of the Water Basin.
7. Replace the Humidifier Main Housing. Make sure it is properly fitted onto the
Water Basin before operating.
8. Refill the Water Tank with cool tap water. Replace the Water Tank onto the Water
Tank Housing.
11
WEEKLY MAINTENANCE: Scale Removal
1. Follow procedures outlined for Disassembly of the unit.
2. Clean the Water Basin by partially filling the Water Basin with one 8-oz cups of
undiluted white vinegar. Allow this solution to remain sitting in the Water
Basin for 20 minutes, while cleaning the interior surfaces with a soft brush.
Dampen a lint-free cloth with undiluted white vinegar and wipe down the Water
Basin thoroughly.
3. Rinse with clean warm water to remove the cleaning solution before
disinfecting the Tank.
Disinfect the Water Tank
1. Fill the Tank half full with water and 1/2 teaspoon of chlorine bleach.
Replace Lid.
2. Allow the solution to stand in the Water Tank for 20 minutes, swishing every
few minutes. Make sure all surfaces are wet.
3. Carefully empty the Tank after 20 minutes, and rinse with water until
you cannot detect any bleach smell.
4. Refill the Water Tank with cool tap water. Replace Water Tank by inserting into
the Water Tank Housing. Repeat all Operation Instructions.
Instructions for Reassembly
1. Reassemble the Humidifier after all parts are cleaned. Replace the Wick Filter
Holder into the recessed area of the Water Basin.
2. Replace the Humidifier Main Housing. Make sure it is properly fitted onto the
Water Basin before operating.
3. If you have cleaned the unit for the next season, replace the Water
Tank without the Lid. Follow Storage Instructions outlined in this
Owner’s Manual.
12
TROUBLESHOOTING
TROUBLE
PROBABLE CAUSE
SOLUTION
Unit does not operate
when power is ON.
Unit not plugged in.
Power failure.
Plug in unit.
Check circuit breaker.
Current room humidity
is equal to or greater than
preset room humidity.
Increase desired
humidity to a
higher level.
Water Tank and Water Basin
are empty. Safety Auto Shut
Off has turned unit OFF.
Refill Water Tank.
Follow manual for
Reset Instructions.
Humidity Display
not illuminated.
Unit not plugged in.
Power failure.
Plug in unit.
Check circuit
breaker or outlet.
Water Droplet
warning signal
is displayed.
Water Tank and Water Basin
needs refilling.
Refill Tank.
Follow manual for
Reset Instructions.
Mist output minimal
to none.
Scale build-up in Water Basin.
Remove scale from
Water Basin.
Wick Filter has not
absorbed water.
Allow 30 minutes wait
time before re-starting unit.
Replace if necessary.
Humidistat is set too low.
Set Humidifier to HIGH.
Water leaks from Tank.
Tank rubber ring is missing
or improperly placed.
Remove Tank Cap and
replace or reposition ring.
Cap not tight enough.
Tank water hot.
Tighten the Cap.
Tank may be damaged call
1-800-233-9054.
Crack in Tank.
Hot water will cause Tank
to pressurize.
Tanks are delicate, and
will crack if dropped.
Fill with cool water only.
Handle Tank with care.
13
TROUBLE
PROBABLE CAUSE
SOLUTION
Water Filter turns brown. Wick Filter needs replacement.
Replace Wick Filter.
Replace Wick Filter.
In areas with hard water,
the Wick Filter should be
changed frequently.
Film on Tank.
Cloudy Water.
Mineral deposits cause
film on Tank to build-up.
Clean / disinfect Tank as
instructed in cleaning
instructions. To order call
1-800-233-9054.
Mineral deposits cause
film on Tank to build-up.
Clean / disinfect Tank as
instructed in weekly cleaning
instructions. To order call
1-800-233-9054.
Cool Mist Humidifier
cycles ON and OFF.
Humidifier is reacting to
room humidity level.
STORAGE INSTRUCTIONS
If your Humidifier will not be in use for 2 days or more, or at the end of the season
follow these instructions.
1. Clean, rinse and thoroughly dry the Humidifier as directed in the WEEKLY
MAINTENANCE section. DO NOT leave any water inside the Water Basin.
2. Remove the Tank Cap. Do not store with the Tank Cap in place.
3. Place the Humidifier in the original carton and store in a cool, dry place.
4. Always clean the Humidifier before the next season begins.
PARTS REPLACEMENT
To order the replacement parts:
• Call consumer service at 1-800-233-9054._________________.
14
LIMITED ONE-YEAR WARRANTY
Warranty Coverage: This product is warranted to be free from defects in materials or
workmanship for a period of one (1) year from the original purchase date. This product warranty is
extended only to the original consumer purchaser of the product and is not transferable. For a period
of one (1) year from the date of original purchase of the product, our Repair Center will, at its
option, either (1) repair the product or (2) replace the product with a reconditioned comparable
model. These remedies are the purchaser's exclusive remedies under this warranty.
Warranty Service: To obtain warranty service, you must call our warranty service number at
1-800-233-9054 for return instructions on how to deliver the product, in either the original
packaging or packaging affording an equal degree of protection to the Repair Center specified
below. You must enclose a copy of your sales receipt or other proof of purchase to demonstrate
eligibility for warranty coverage.
To return the appliance, ship to:
To contact us, please write to, call, or email:
ATTN: Repair Center
708 South Missouri Street
Macon, MO 63552 USA
Consumer Relations Department
PO Box 7366
Columbia MO 65205-7366 USA
1-800-233-9054
What Is Not Covered: This warranty does not cover damage resulting from misuse, accident,
commercial use, improper service or any other damage caused by anything other than defects in
material or workmanship during ordinary consumer use. This warranty is invalid if the serial number
has been altered or removed from the product. This warranty is valid only in the United States
and Canada.
LIMITATION ON DAMAGES: THERE SHALL BE NO LIABILITY FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY OR CONDITION
ON THIS PRODUCT.
DURATION OF IMPLIED WARRANTIES: EXCEPT TO THE EXTENT PROHIBITED BY
APPLICABLE LAW, ALL IMPLIED WARRANTIES AND CONDITIONS, INCLUDING, WITHOUT LIMITATION,
IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE OR USE ON THIS PRODUCT ARE LIMITED IN DURATION TO THE DURATION OF THIS
WARRANTY.
Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages,
or allow limitations on how long an implied warranty lasts, so the above limitations or exclusions
may not apply to you. This warranty gives you specific legal rights and you may have other rights
under the laws of your jurisdiction.
WESTINGHOUSE, ꢀ and “You Can Be Sure...If It's Westinghouse” are trademarks
of WESTINGHOUSE ELECTRIC CORPORATION and used under license.
©2005 Patents Pending. All rights reserved.
Made in China
P/N 61763
7/05
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