Alen Air Purifier A375 HEPA User Manual

							USER MANUAL
Alen A375 HEPA Air Purifier 
						

							Table of ConTenTs
Air Purifier Safety
Using Your Air Purifier
Operating Your Unit
Identification Of Parts
Know Your Air Purifier
Care & Maintenance
Replacing The Filter
Why You Should Replace Your Filter
Alen’s AutoShip Filter Plans
How To Replace The Filter
How To Replace The UV Light
Troubleshooting Tips
Lifetime Limited Warranty
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5
8
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11
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							4Pure Air For Life
aIR PURIfIeR safeTY 
Provided in this manual are important safety messages regarding your electrical home appli-
ance.  Always read, follow and save all safety directions.
Location Requirements
•  Use a level surface at least 6” (15.2cm) from heat sources such as ranges or heaters.
•  Do not block air vent openings or place air purifier on a soft surface such as a bed or sofa.
•  Never insert fingers or foreign objects into air grills or vents.
•  Operate indoors only.
 
•  Electrical and Safety Requirements — Reduce your risk of fire or electrical shock.   
Failure to follow these instructions can result in death, fire or electrical shock.
•  Do not connect unit to any electrical socket that is damaged.
•  Ensure filter is correctly installed before turning on unit.
•  Always turn off the air purifier when not in use and before unplugging.
•  Do not use next to a source of heat, such as a ranger, heater or dryer.
•  Do not use near a bath, shower, swimming pool or where a unit can get wet.
•  Change your filter on a regular basis, so dust and particles do not build up.
•  Do not plug the air purifier into an outlet controlled by a dimmer switch.
•  Do not use in a window.
•  Unplug air purifier before servicing.
•  Do not use an adapter.
•  Do not use an extension cord.
•  Always unplug the unit before changing the filter.
•  Do not cover the unit or impede air flow.
•  Do not exceed the rating of the power outlet or connection device. May cause electric 
shock or fire due to excess heat generation.
•  Do not insert or pull out plug with wet hands, it may cause electric shock.
•  Never try to take apart or repair the unit by yourself.
•  Disconnect the power if strange sounds, smell or smoke comes from it. 
•  Do not try to change the filter during operation.
•  Do not drop the unit, as this can result in damage.
•  Do not place heavy objects on the power cord and take care so that the cord is not com -
pressed as there is danger of fire or electric shock.
•  Do not climb up or sit on the unit. You may be injured if you fall or if the unit falls over.
•  Do not spray insecticides or any other flammable sprays near the machine. It may cause 
explosion or fire.
•  Use only in the proper electrical socket type. Socket type (voltage & hertz) can be found 
on the product sticker on the side or bottom of the unit. Plugging the unit in to the incorrect 
socket type can damage/destroy the unit.
•  To reduce the risk of electric shock, this equipment has a polarized plug (one blade is wider 
than the other). This plug will fit in 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 qualified personnel to install 
the proper outlet.  Do not alter the plug in any way.  
						

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UsIng YoUR aIR  PURIfIeR
Operating Your Unit:
1. Plug your air purifier into a grounded outlet.
2.  Press ON/OFF to start the air purifier.  When your unit is on the control panel screen will 
light up.  To stop the air purifier press ON/OFF and the indicator light will turn off.
3.  Press SPEED and watch the indicator numbers until desired fan speed is achieved.
4.  Press TIMER to have the air purifier automatically turn off in a set amount of hours.  Up to 
eight hours.
5.  Press IONIZER to activate the ozone safe built in ionizer.  The built-in IONIZER charges 
particles in the air. This causes the particles to stick together and become larger, making it 
easier for the filter and cleaners to trap. Press IONIZER again to turn of f.
6.  Filter replacement indicator — Light bar will progressively illuminate as filter collects par -
ticles.  There are two green, two yellow and one red bar.  Each bar represents approxi -
mately one month of continuous operation.  Once all five bars are fully illuminated (red 
being the last), it is time to change the filter.   
7.  After changing the filter, RESET the filter indicator by holding down TIMER while the unit is 
ON until the clean indicator light disappears.
8.  Press UV to activate the built-in ultraviolet lights.  Press UV again to turn of f.
9.  When on AUTO fan speed, the unit will adjust fan speed based on the level of dust or 
smell.  Dust and smell bars adjust horizontally as their respective levels change.
Fan Speed Result
Level 1 Quietest operation
Level 2 Basic cleaning power
Level 3 Moderate cleaning power
Level 4 Maximum cleaning power
Auto AUTO fan speed, the unit will adjust fan speed based 
on the level of dust or smell.  Auto begins on level 1 and 
if triggered will clean at level 4.  
						

							6Pure Air For Life
Identification Of Parts
Purified air outlet grill
Front air intake 
grillSide air intake
Dust and smell sensorsControl panel
5. Ozone safe optional Ionizer. 
    Press to turn Ionizer ON or OFF.
4. Eight hour timer. Press to display 
    desired hours in which to shut 
    off unit.
2.  Press to START or 
STOP your air purifier.
9. Dust and smell bars adjust 
    horizontally as their levels change.6. Notifies you when it’s time 
    to replace the filter.  
7. Hold down TIMER after     
    the filter has been changed.
8.  Press to turn UV Lights 
ON or OFF.
3.  Press to select one of four fan 
speeds. The illuminated screen 
will display selected speed.
Rating label
Wall mountable hooks  (Hardware not included)Handle for 
easy carrying  
						

							7www.AlenCorp.com   1-800-630-2396
on/offPress this key to start operation, 
press it again to stop it.
TIMERSet the operation time. When 
pressing the key, the timer
scale on the panel will 
indicate the set time:
Low          Medium    \1   High
Quiet             AutoRun\1 
1 Hou\f            2\1 Hou\f        4 Hou\f
C\bncel             8 Hou\f 
P\feset On Time    P\feset Off Time
            P\feset \1Ope\f\btion F\bn Speed \1
seT UPUsed to set the 3 modes. On 
Time, Off Time and Air Flow in 
operation. When pressed each 
time, it will follow the order 
below:Low          Medium    \1   High
Quiet             AutoRun\1 
1 Hou\f            2\1 Hou\f        4 Hou\f
C\bncel             8 Hou\f 
P\feset On Time    P\feset Off Time
            P\feset \1Ope\f\btion F\bn Speed \1
fan sPeeDEvery time you press it, the 
fan speed will vary according
to the following order:
Low          Medium    \1   High
Quiet             AutoRun\1 
1 Hou\f            2\1 Hou\f        4 Hou\f
C\bncel             8 Hou\f 
P\feset On Time    P\feset Off Time
            P\feset \1Ope\f\btion F\bn Speed \1
UVPress this key to start UV,
press it again to stop it.
IonIZeRPress this key to turn on 
the ionizer, press it again to 
stop it.
InCReaseAn auxillary key of the set 
up key, used to increase 
operation time and fan 
speed. Each time it is 
pressed, the present time 
will increase by 30 minutes 
or the fan speed will in-
crease to the next level. 
DeCReaseAn auxillary key of the set up 
key, used to increase  
operation time and fan 
speed. Each time it is 
pressed, the present time 
will decrease by 30 minutes 
or the fan speed will 
decrease to the next level.   
						

							8Pure Air For Life
KNOW YOUR AIR PURIFIER
When using the air purifier for the first time in a room, many prefer to use a higher fan speed 
like speed three or four for a couple of hours in order to clean the room’s air initially. Then, it is 
recommended that the air purifier is left on to run continuously.
Features
•  HEPA type filtration captures dust, allergens and airborne pollutants
•  Activated Carbon layer traps light odors and chemicals (VOCs) from common household 
products
•  Ionizer charges particles, causing them to clump together for improved filtration
•  Alen’s Smart-Sensor Technology automatically adjusts filtration levels based on level 
of airborne pollutants. When the fan speed is set to AUTO, these sensors increase or 
decrease the unit’s speed based on the level of odor or dust in the air.
•  4 fan speeds with an 8 hour timer to control air circulation
•  Remote control conveniently manages features
•  Wall-mountable for space saving or can be placed on the floor
•  Digital display with simple and intuitive touch button controls
•  Auto-off safety feature when front cover is removed
•  Filter designed for easy replacement
•  Lifetime Limited Warranty
CARE & MAINTENANCE
Replacing The Filter
The filters used in all of Alen HEPA Air Purifiers are not designed to be washed, cleaned or 
otherwise reused. Over time, the filters become overloaded with particles, decreasing their 
filtration performance. We recommend regular filter replacements (at least every 6 months with 
normal use) to extend the life of your air purifier and maximize performance.
The black foam layer of the filter, known as the Pre-Filter, captures large dust and hair.  This 
layer is held on with Velcro®.  Once removed, the Alen Pre-Filter can be washed or vacuumed 
to maintain efficient operation of the unit.
For optimal performance, it is recommended that the air purifier is left on to run continuously .  
Under this type of usage, filters will need to be replaced approximately every six months. 
Why You Should Replace Your Filter
•  Fulfills the terms of Alen’s warranty which states that the filters are required to be changed 
on a regular basis in order to prevent excessive stress on the unit.   
•  You have bought an Alen HEPA Air Purifier to improve the quality of your indoor air.  
Changing your filters will maintain the level of air quality you require.  Excessively dirty 
filters can compromise the level of clean air your air purifier can provide.  
						

							9www.AlenCorp.com   1-800-630-2396
Alen’s AutoShip Filter Plan — Convenience, Pure Air and Savings
Regular replacement of your filter will extend the life of your air purifier and keep your air pure.   
Alen filters provide efficient filtration for 4 months of heavy usage, 6 months of normal usage 
and 8 months of moderate usage. With Alen’s convenient  AutoShip Filter Plan your filters will 
be shipped FREE right to your door, exactly when needed.
sa Ve — Get FREE LIFETIME  SHIPPING on every filter.
ConVenIenCe — Your filters are delivered right to your door exactly when needed.           
Choose a 4, 6 or 8 month plan and cancel at anytime.  
LIFETIME LIMITED WARRANTY — An Alen  AutoShip  plan is the convenient way to           
extend the life of your air purifier and benefit from the Lifetime Limited W arranty.
To sign up and save just visit AlenCorp.com/filters or call 1-800-630-2396.
How To Replace The Filter
1.  Always unplug the unit when installing a filter.
2.  Distinguish the front side from the back side of the filter.
3.  It is recommended to wear gloves while discarding the used filter . Place the used filter in 
a plastic bag to prevent dust from reentering the air.
1. With the front of the unit 
    facing up, pull up on the  
    lower left or right corner of 
    the front inlet air intake grill.
2. After pulling up, push the 
    grill towards the display panel 
    at the top of the unit.  
						

							10Pure Air For Life
4. Take the new filter out of 
    the plastic bag and insert 
    it into the air cleaner with 
    the arrow pointing inward.
5. Insert the top of the inlet 
   grill first and then snap in 
   the lower part of the grill.
3. Remove the used filter by 
    lifting the pull string.
6. RESET the filter indicator 
    by holding down TIMER 
    while the unit is ON until 
    the clean indicator light 
    disappears.  
						

							11www.AlenCorp.com   1-800-630-2396
How To Replace The UV Light
1. Before replacing the UV light, please unplug the unit.
2.  With the front of the unit facing up, pull up the lower end of the inlet grill and push it 
toward the display panel at the top of the unit, then remove it.
3.  Remove the filter by lifting the pull string.
4.  Unscrew the screws on the lampshade with a screwdriver, and then remove the lamp -
shade.
5.  Gently rotate the bulb a quarter turn in either direction until it unlocks from the socket. Pull 
the pins out of the sides of the socket, one end at a time.
6.  Unpack the new UV bulb gently by handling the ends only. Starting with one end of the 
bulb, then the other, gently insert the metal pins on the bulb into the white slotted socket 
one pin at a time. Once the ends of the bulb are completely inserted into the socket, 
rotate the bulb a quarter turn until it locks into place.
7.  Reinstall the lampshade.
8.  Reinsert the filter.
9.  Hook the fasteners on the intake grid into the holes on the unit first, and then push down 
on the two sides of the inlet grid until the cover snaps into place.
TRoUbleshooTIng TIPs
How do I reset the filter indicator light? I put in a new filter but the light is still 
illuminated.
After changing the filter, RESET the filter indicator by holding down TIMER while the unit is ON 
until the illuminated clean indicator light disappears.
Can I clean the filter?The black foam layer of the filter, known as the Pre-Filter, captures large dust and hair.  This 
layer is held on with Velcro®.  Once removed, the Pre-Filter can be washed or vacuumed to 
maintain efficient operation of the unit.  No other layers or parts of the filter can be washed, 
cleaned or otherwise reused. Please replace the filter regularly to maintain optimal high perfor -
mance.
How can I tell if my UV lights have burnt out?Turn on the UV lights by pressing UV and set the fan speed to 1.  Make sure the room that the 
unit is placed in is dark.  Look through the top of the unit where the air blows out to see if there 
is a blue glow.  This glow is quite faint, so you may need to press the UV button on/ off several