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Fig. 20
Fig. 21
COMPONENT
MAINTENANCE SCHEDULE
Rinse and air dry every 3 months under normal use.
Empty each time you vacuum.
Pre-Motor Foam Filter
Dust Cup
Rinse and air dry every 3 months under normal use.
Pre-Motor Felt Filter
Clean once every 2 years or as needed.
Post-Motor HEPA Filter
1
2
3
4
CLEANING THE PRE-MOTOR FILTERS
1 Remove the dust cup.
2 Pull the 2 filters out from the top of the motor
base. (Fig. 23)
3 Rinse the filters thoroughly in lukewarm water until
the water runs clear.
DO NOT put the filter in the washing machine or
dishwasher.
NOTE: The material in the filter will discolor over
time. This is NORMAL and will not affect the
performance of the filter.
4 Squeeze out excess water and let air-dry for at
least 24 hours before replacing. Do not use a hair
dryer or other heating methods to dry.
5 Place the felt filter in first, then the foam filter.
6 Replace the dust cup.
EMPTYING THE DUST CUP
The dust cup needs to be emptied each time you
vacuum and periodically during cleaning, when the
dust cup appears full.
1 Undo the latches on the sides of the dust cup by
lifting them up and outwards to remove the dust
cup from the motor base. (Fig. 20)
2 Hold the dust cup over a trash receptacle and
press the bottom door release button. (Fig. 21)
Tap gently to empty contents. Press the door shut
again until it clicks.
3 If needed, turn the dust cup upside down over the
trash receptacle and press the top door release
button. (Fig. 22) Tap gently to remove contents.
Use a dry cloth or paper towel to remove debris
stuck to the screen filter inside the dust cup. Press
the door shut again until it clicks.
4 Replace the dust cup on top of the motor base.
Hook the two latches onto the tabs on the sides of
the dust cup and push down to lock.
Screen
Filter
Fig. 22
Fig. 23
Pre-Motor
Foam Filter
Felt Filter
Post Motor
HEPA Filter
IMPORTANT: Loss of Suction may
occur if foam filters are not cleaned
every 3 months. Rinse and allow to
air dry completely.
Foam filters may appear dirty after
use - this is normal.
Maintenance
NV355_NV356E_NV356K_NV357_IB_110714_3.indd 14 11-07-20 9:32 AM