Oreck Venture Manuel D'utilisation page 20

CLEANING THE SECONDARY FILTER
Locate secondary filter in the back of the
filter bag compartment.
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WARNING!
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4. MAINTENANCE
When the filter is dirty, lift it up and out
of the frame.
TO REDUCE THE RISK OF PERSONAL INJURY–UNPLUG BEFORE CLEANING OR SERVICING. DO NOT USE CLEANER WITHOUT BAGS OR FILTERS IN PLACE.
Rinse filter under running water to clean.