Envion TPP440 - Manual (Page 6)

440
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CLEANING & MAINTENANCE
Keep the Therapure ® 440 functioning properly by cleaning the permanent HEPA-type filter every
four weeks. More frequent cleaning will be necessary if the unit is located in an area with a high level
of airborne contaminants (excessive amounts of smoke, pet dander, etc.).
NOTE: Always make sure the Therapure ® 440 is turned off and unplugged before cleaning.
» Vacuuming will restore performance of the permanent HEPA-type filter. However,
the filter may appear stained. This is normal and does not affect performance in any way.
» Do not use water or any household cleaners or detergents to clean the permanent
HEPA-type filter.
» The inlet grill may be cleaned (after unit is turned off and unplugged) with a vacuum
or a slightly damp cloth.
Cleaning the permanent HEPA-type filter
1. Release the inlet grill by pressing on the locking latch (see diagram of Main Parts).
2. Remove the inlet grill from the unit as shown below.
3. Grasp the left and right frames of the permanent HEPA-type filter through the indentations on
the sides of the filter enclosure and remove the filter.
4. To clean the permanent HEPA-type filter, use the brush or crevice attachment with a vacuum
cleaner. Run the attachment along the inlet and outlet side of the filter, cleaning between the
crevices as much as possible. Do not use water or any household cleaners or detergents to
clean the permanent HEPA-type filter.
5. Once the permanent HEPA-type filter has been cleaned and checked for any possible damage,
replace the filter back in the reverse direction described here. Plug in the unit and hold down
Timer + Power On button for 3 seconds. The clean filter light will go off and your cleaning
maintenance is done. Exposing the Therapure ® 440 to candle/oil/fireplace soot and smoke is
not recommended and will require more frequent cleaning.
OPERATING THE THERAPURE ® 440
CONTROLS/SETTINGS:
Power Control – To operate the Therapure ® 440 air purifier, press the ON/OFF button to turn on
the air purifier. Press the button again to turn the unit off.
Timer Control – The Therapure ® 440 air purifier can be programmed to turn off after a preset
amount of time. Press the “TIMER” button to program the timer. Each press will add one hour up to
a total of 24 hours. Keeping the button pressed will automatically increase to 24 hours, 1 hour at a
time, after that it will turn back to off.
Fan Speed Control – The Therapure ® 440 has three different speeds of cleaning, LOW, MED and
HI. Press “SPEED” button to cycle the settings and select the fan speed you desire. The speed state
will be shown on the LED display.
Clean Filter Indicator Light – The Therapure ® 440 Clean Filter Indicator Light will turn on each
time the filter needs to be cleaned. To reset the filter indicator, press the TIMER and the ON/
OFF buttons together for 3 seconds. The CLEAN FILTER light will flash 3 times and then turn off
completely, indicating the unit has been reset.
Night Mode – If the UV light bar is too bright, press the “Night Mode” button to turn off the UV
light bar feature, and the lighted display. The ON/OFF indicator, however, will remain lit. The night
mode only turns off UV light bar not the actual UV feature.
Reset Filter Control – Press down the “TIMER” and “ON/OFF” button for 3 seconds, the clean
filter light will flash 3 times and then the clean filter light will turn off, indicating the unit has
been reset.
UV Control – Press the UV/VOC control button “UV/VOC” to turn on the UV lamp to kill harmful
airborne germs and reduce harmful VOC (volatile organic compounds). Press it again to turn off
the UV and VOC.
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