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MAINTAINING YOUR AIR CLEANER
CAUTION
Filter Washing Hazard.
Washing can damage prefilter, HEPA filter and CPZ canister.
Do not wash filters.
Replace filters according to recommended schedule.
Determining When to Replace Your Filters
With proper maintenance, your air cleaner is designed to provide years of high-
efficiency air cleaning. Your air cleaner contains up to three filters, depending on
model: a carbon prefilter, a HEPA filter and a CPZ canister on some models.
Replacing Your Prefilter Every Three Months (Quarterly)
The carbon prefilter captures large airborne particles and helps reduce odors.
NOTE: Do not operate the air cleaner without the carbon prefilter.
IMPORTANT:
Replace the prefilter every three months. If the unit is used in a smoking or
other persisting unpleasant odor environment, consider purchasing a model
with a CPZ canister (F112C or F113C). See Table 1 to select filter part num-
bers.
Replacing Your Primary HEPA FIlter and CPZ Canister
The primary HEPA filter and CPZ canister life expectancy depends on the
concentration of contaminants in the environment where the air cleaner is installed. If
there are sources of large amounts of particle generation (such as woodworking or
heavy smoking), the useful life of the prefilter and HEPA filter and CPZ canister may be
reduced.
It is recommended changing the HEPA filter and CPZ canister based on operating
conditions—every three years for light usage, two years for normal usage and one
year for heavy usage. See Table 1 to select filter part numbers.
Whenever the combined air resistance of the carbon filter and the HEPA filter and CPZ
canister becomes excessive due to the amount of contaminants captured, the air
cleaner begins to audibly pulsate. Instead of a steady stream of air at the outlets, rapid
puffs of air can be felt.
When this occurs:
• The carbon prefilter may be clogged and needs replacing.
• The HEPA filter and CPZ canister need replacing if the unit continues to pulsate
after replacing the carbon prefilter.