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9. MAINTENANCE
Periodic maintenance is required to insure that the LB-444 operates properly. A
severely polluted environment can soil an air purifier plate in as little as four weeks
or as long as a year. Shown here are basic maintenance procedures that should
be carried out to keep your unit running at top performance.
Pre-filter / HEPA filter cleaning (see page 5 for removal instructions):
You have two options to clean the
pre-filter, and HEPA filter:
• When visibly dirty, simply remove the
pre-filter or HEPA filter and remove the
heavy particulate from the screen with a
hand-held vacuum. This method will
extend the life of the screen / filter.
• When visibly dirty, remove the
pre-filter and HEPA filter from the unit
and wash it in cool water, brush it gently
with a toothbrush to remove any
particulates. Dry completely prior to
re-installing the lint screen.
Remove the back cover.
Carefully remove each filter. Clean the filter with cool water and ammonia. Dry
completely prior to re-installing the filter (page 5).
10. Fan Blade and Front Grill (take off front/reinstall grill method:）
As pictured, use a screwdriver to remove the four screws on the front grill
plate of the unit to remove the front grill to access the fan for cleaning and
maintenance. Please be sure to place the 4 screws in a location where they
will not be lost or overlooked. To reinstall after cleaning, simply re-attach the
grill plate with the 4 screws and a screwdriver.
Wipe off the fan blade and front grill (if dirty) with damp washcloth. The fan
requires no maintenance (with the exception of the first time it is used, when it
may be necessary to give it a gentle push to get it started). If the fan squeaks,
a drop of lightweight oil may be needed on the fan shaft.
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