Bionaire BWM5251

1. Do NOT attempt to repair or adjust any
electrical or mechanical functions on this unit.
Doing so will void the warranty. The insides
of the unit contain no user serviceable parts.
Only qualified personnel should perform all
2. Should the unit stop working, first check
the fuse in the plug (UK only) or fuse/circuit
breaker at the distribution board is operating,
before contacting the manufacturer or service
3. If you need to exchange the unit, please
return it in its original carton, with a sales
receipt, to the store where you purchased it.
4. Should your humidifier require service,
please contact your local dealer.
If the plug is not suitable for the socket outlets in
your home:
• Please do not attempt to remove plug and
replace. This plug is sealed and you cannot
gain access to the wires.
• In the unlikely event the plug fails, please
check fuse and replace with a 3A fuse which
needs to be BSI or ASTA approved to the
BS13623 standard.
If you still have problem, please contact the UK
Customer Service helpline on 0800 052 3615.
• We recommend the use of a BionaireTM
Hygrometer/Thermometer, model no: BT400,
to read the indoor room temperature and
humidity level.
Input voltage: 220-240 V~ 50 Hz
Power consumption: 400 Watts
Holmes Products (Europe) Ltd. reserves the right
to change or modify any specifications without
Unit does not
turn on.
☛ Not plugged in.
☛ Outlet not functioning.
✔ Plug in unit.
✔ Have outlet replaced by a licensed
Reset light
☛ Water Tank Empty.
☛ Unit not reset after refill.
☛ Scale buildup on heating element.
✔ Refill Tank.
✔ Follow manual for Reset Instructions.
✔ Remove scale from heating element.
Mist output
minimal to
☛ Scale buildup on heating element.
☛ Humidifier is not warmed up yet.
✔ Remove scale from heating element.
✔ Allow 10 minutes for the humidifier
to warm up.
Water Leaks
from tank.
☛ Tank rubber ring is missing.
✔ Remove tank cap and replace or
reposition ring.
✔ Tighten the cap.
✔ Fill with cool water only.
☛ Cap not tight enough.
☛ Tank water is Hot.
Crack in Tank.
Film on tank.
BWM5251-IUK_10EM1.indd 1-4
☛ Hot water will cause tank to
☛ Tanks will crack if hit or
✔ Fill with cool water only.
☛ Mineral deposits.
✔ Clean/disinfect tank as instructed in
cleaning instructions
✔ Handle tank with Care.
Please keep your receipt as this will be required
for any claims under this guarantee.
This appliance is guaranteed for 2 years after
your purchase as described in this document.
During this guaranteed period, if in the unlikely
event the appliance no longer functions due to a
design or manufacturing fault, please take it back
to the place of purchase, with your till receipt and
a copy of this guarantee.
The rights and benefits under this guarantee
are additional to your statutory rights, which are
not affected by this guarantee. Only Holmes
Products (Europe) Ltd. (“Holmes”) has the right
to change these terms.
Holmes undertakes within the guarantee period
to repair or replace the appliance, or any part of
appliance found to be not working properly free
of charge provided that:
• you promptly notify the place of purchase or
Holmes of the problem; and
• the appliance has not been altered in any
way or subjected to damage, misuse, abuse,
repair or alteration by a person other than a
person authorised by Holmes.
Faults that occur through, improper use, damage,
abuse, use with incorrect voltage, acts of
nature, events beyond the control of Holmes,
repair or alteration by a person other than a
person authorised by Holmes or failure to follow
instructions for use are not covered by this
guarantee. Additionally, normal wear and tear,
including, but not limited to, minor discoloration
and scratches are not covered by this guarantee.
The rights under this guarantee shall only apply
to the original purchaser and shall not extend to
commercial or communal use.
If your appliance includes a country-specific
guarantee or warranty insert please refer to
the terms and conditions of such guarantee or
warranty in place of this guarantee or contact
your local authorized dealer for more information.
This marking indicates that
this product should not be
disposed with other household
wastes and should be disposed
separately throughout the EU.
To prevent possible harm to
the environment or human
health from uncontrolled waste
disposal due to the presence of
hazardous substances within the product, recycle
it responsibly to promote the sustainable reuse
of materials and resources. To return your used
device, please use the return and collection
systems available to you or contact the retailer
where the product was purchased. They can take
this product for environmentally safe recycling.
Holmes Products (Europe) Limited
1 Francis Grove
SW19 4DT
pure indoor living
Holmes Products (Europe) Ltd
1 Francis Grove
London SW19 4DT
Fax: +44 (0)20 8947 8272
Website address:
UK - Filter Sales Order Line - 0870 759 9000
UK - Free phone Customer Service Helpline – 0800 052 3615
© 2010 Sunbeam Products, Inc. doing business as Jarden Consumer Solutions. All rights reserved.
Distributed by Holmes Products (Europe) Ltd., 1 Francis Grove, London SW19 4DT, United Kingdom.
Printed in PRC
3/23/10 11:42:58 AM
By choosing a Bionaire® humidifier, you have
chosen one of the finest humidifiers on the
market today!
NOTE: Before reading these
instructions, please review the
corresponding illustrations.
DESCRIPTIONS (See Fig.1 & 2)
A. Humidifier tank
B. Main Housing
C. Tank Handle
D. Control Knob
E. Humidifier base
F. Medication Cup
G. Power light
H. Reset Light
BWM5251-IUK_10EM1.indd 5-8
When using electrical appliances, basic safety
precautions should always be followed to reduce
the risk of fire, electric shock, and injury to
persons, including the following:
1. Read all instructions before using the
2. To avoid fire or shock hazard, plug the
appliance directly into an electrical outlet and
fully insert the plug.
3. Keep the cord out of heavy traffic areas. To
avoid fire hazard, NEVER put the cord under
rugs, or near radiators, stoves, or heaters.
4. DO NOT place humidifier near heat sources
such as stoves, radiators, and heaters. Do
locate your humidifier on an inside wall near
an electrical outlet. The humidifier should be
at least 10cm/4” away from the wall for best
5. CAUTION: Hot steam (
). This humidifier
produces hot steam and therefore should not
be placed in an area where it is accessible to
children. Never use a humidifier in a closed
room. (i.e: doors and windows closed) as it
may result in excessive humidity.
6. WARNING: Do not attempt to refill
humidifier without first unplugging the unit
from it’s electrical outlet. Be sure to pull by
the plug and not the cord.
7. NEVER drop or insert any object into any
openings. DO NOT place hands, face, or
body directly over or near Moisture Outlet
while unit is in operation. DO NOT cover
Moisture Outlet or place anything over it
while the unit is operating.
DO NOT operate any appliance with a
damaged cord or plug, after the appliance
malfunctions, or if it has been dropped or
damaged in any manner. Return appliance
to manufacturer for examination, electrical or
mechanical adjustment, or repair.
Use appliance only for intended household
use as described in this manual. Any other
use not recommended by the manufacturer
may cause fire, electric shock, or injury
to persons. The use of attachments not
recommended or sold by the manufacturer
may cause hazards.
DO NOT use outdoors.
Always place humidifier on a firm, flat,
level surface. A waterproof mat or pad is
recommended for under the humidifier.
NEVER place it on a surface that may
become damaged by exposure to water and
moisture (i.e. finished floor).
DO NOT allow the Moisture Outlet to directly
face the wall. Moisture could cause damage,
particularly to wallpaper.
Humidifier should be unplugged when not in
NEVER tilt, move, or attempt to empty unit
while it is operating. Shut off and unplug
before removing the water tank and moving
the unit. DO NOT attempt to remove the
water tank within 15 minutes after the
humidifier is turned off and unplugged.
Serious injury may result.
This humidifier requires regular maintenance
to operate appropriately. Refer to cleaning
and maintenance procedures.
NEVER use detergents, petrol, glass cleaner,
furniture polish, paint thinner, or other
household solvents to clean any part of the
Excessive humidity in a room can cause
water condensation on windows and some
furniture. If this happens, turn the humidifier
Do not use humidifier in an area where
humidity level is in excess of 55%.
DO NOT attempt to repair or adjust any
electrical or mechanical functions on this
unit. The inside of the unit contains no user
serviceable parts. All servicing should be
performed by qualified personnel only.
If the supply cord is damaged, it must be
replaced by the manufacturer or its service
agent or a similarly qualified person.
This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities,
or lack of experience and knowledge,
unless they have been given supervision or
instruction concerning use of the appliance
by a person responsible for their safety.
Children should be supervised to ensure that
they do not play with the appliance.
22. CAUTION: In order to avoid a hazard due
to inadvertent resetting of the thermal cutout,
this appliance must not be supplied through
an external switching device, such as a timer,
or connected to a circuit that is regularly
switched on and off by the utility.
Please note that this is an electrical
appliance, and requires attention when
in use.
Your Bionaire® Warm Mist Humidifier is designed
to allow the proper amount of water to flow out
of the tank and into the heating chamber where
the Electronic Thermal Control heating element
warms the water. Air is drawn in through the
grill openings located in the back of the unit and
mixed with steam in the misting chamber. The
warm mist is then dispersed out of the top of the
misting chamber through the outlet grill and into
the room.
NOTE: A humidity level below 30% can be
unhealthy and uncomfortable. The recommended
humidity level is between 40%-60%.
1. Be sure the humidifier is disconnected from
the electrical outlet and the Control Knob is in
the Off ( ) position.
2. Select a location for your humidifier, on a flat
surface, about 10cm away from the wall. Do
not place your humidifier on furniture. A floor
location that will not be damaged by moisture
is best.
3. Remove the water tank (see Fig. 1).
4. Make sure the humidifier base (E) is free of
foreign objects by removing the main housing
(B). To remove this stack you must move the
Safety Lock located in the humidifier base,
counter clockwise until the main housing can
freely move away from the base. To replace
the main housing and chamber back to the
base line up and then rotate the safety lock
NOTE: This humidifier holds about 3.4 litres
of water in the tank and humidifier base. The
humidifier will produce up to 11.7 litres of
moisture over a 24-hour period.
1. Be sure the humidifier is disconnected from
the electrical outlet and the Control Knob is in
the Off ( ) position. Remove the water tank.
2. Twist off the tank cap located on the bottom
of the tank by turning counter clockwise and
fill the water tank with cool, fresh water. Do
not fill with warm water as this may cause
3. After filling the tank, replace the tank cap
by firmly turning clockwise and then replace
the water tank on the base. The tank will
immediately begin to empty into the base.
4. Plug the power cord into a convenient and
suitable power supply.
1. To turn the unit on, switch the control knob
to the High (2) position. High will produce
the maximum moisture and Low (1) will
produce the longest run time and quieter
performance. The Power light ( ) will be
on. It is normal for the humidifier to take 10
minutes to boil the water and produce a mist.
2. To turn the unit to low, switch the knob to the
Low (1) position. To turn the unit to Off ( ).
3. The Medication cup (F) is located on the top
of the mist chamber. To use pour a few drops
of aromatherapy oils or medicinal drops that
have been prescribed by your doctor into the
Medication cup. DO NOT add medication to
the water tank. DO NOT add medication to
the Medication cup when the unit is already
NOTE: When the water in the tank is empty
and the water in the heating chamber is almost
empty, the automatic shut off will activate. The
Reset Light ( ) will illuminate and the unit will
not operate again until you refill the water tank
and reset the humidifier as outlined below:
1. Turn the control knob to Off ( ).
2. Unplug the unit.
3. Remove, empty and refill the water tank,
being sure to follow the maintenance
instructions. then replace the water tank onto
the base.
4. Allow 30 minutes for the automatic shut off to
5. After the 30 minutes, plug the unit into the
socket and turn the control knob to High
(2). The Reset Light ( ) should now be off.
In about 10 minutes the unit will begin to
produce moisture.
If the Reset Light ( ) is still on at this point, and
the unit does not being to produce moisture within
a few minutes, then please repeat steps 1-5.
If you do not plan to use the humidifier for two
or more days, make sure any residual water is
drained from the water tank and base to prevent
algae or bacteria growth.
The following maintenance procedures must
be routinely followed in order to ensure proper,
efficient operation of your humidifier. The unit
WILL FAIL if it is not cleaned properly.
Regular cleaning prevents scale build-up on
the heating element and tray. It also prevents
microorganisms from growing on the tray and
tank. This ensures that maximum efficiency will
be achieved.
We cannot over-emphasize how essential proper
cleaning is to the maintenance and continued
use of your unit and the avoidance of algae or
bacteria build-up.
Regular Maintenance
The frequency of maintenance will depend on
the average daily use of your humidifier and the
water hardness of your area. It is recommended
that this procedure is carried out weekly or more
regularly if necessary.
1. Before cleaning, set the control to Off
( ) position and unplug the unit from the
electrical outlet.
2. Remove the water tank (A) then unlock the
misting chamber (B) by rotating the safety
lock. Lift mist chamber from the unit’s base.
3. Empty water and minerals from the base and
wash it through to remove any sediment and
dirt that has accumulated in the base.
NOTE: It is imperative that the base is cleaned
properly. The base is dishwasher safe for easy
cleaning (Top rack of the dishwasher only).
4. Rinse out the tank out and refill with clean
cool water.
5. Wipe the heating element clean with a soft
cloth after it has had a chance to cool.
WARNING: If the misting chamber is
left assembled to the humidifier, it may
take up to an hour before the heating
element is sufficiently cool to be
This humidifier heats the water producing a
clean moisture. Some of the impurities from the
water are collected in the Heating Chamber. The
Electronic Thermal Control Heating element is
lined with a coating that is designed to provide
the easiest cleaning to prolong the operating
efficiency of the humidifier.
DO NOT use any metal or hard objects to
clean the Heating Element. The coating can be
scratched if cleaned improperly.
Never use detergents, gasoline, kerosene, glass
cleaner, furniture polish, paint thinner or other
household solvents to clean any part of the
De-scaling Maintenance
Scale needs to be removed as it becomes
1. Repeat steps 1-3 in the Maintenance section.
2. Clean the base by partially filling the tray
with 200ml of undiluted white vinegar. If the
element is heavily scaled, plug the humidifier
into an electrical socket and turn it ON for no
longer than 15 seconds. After this time turn
the humidifier OFF and unplug it from the
electrical outlet.
Let solution stand 20 minutes, cleaning all
interior surfaces with a soft brush. Dampen
a cloth with undiluted white vinegar and wipe
out entire tray to remove scale.
3. Rinse with clean warm water to remove
scale and the white vinegar solution before
beginning to disinfect the tank.
4. Wipe the heating element clean with a soft
cloth after it has had a chance to cool.
Disinfect tank:
1. Fill tank with 1/2 teaspoon of bleach and 2
litres of water.
2. Let the solution stand for 20 minutes,
swishing every few minutes. Wet all surfaces.
3. Empty the tank after 20 minutes, and rinse
well with water until the bleach smell is gone.
Dry with some paper towel.
4. Refill the water tank with cool water;
replace the water tank. Repeat Operating
If your humidifier will not be in use for two days
or more, or at the end of the season follow these
1. Clean, rinse and thoroughly dry the humidifier
as directed in the De-scaling Maintenance
section. DO NOT leave any water inside the
base or tank.
2. Remove the reservoir cap on the tank. Do
not store with the reservoir cap in place.
3. Place the humidifier in the original carton and
store in a cool, dry place.
4. Clean the humidifier before the next season
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