Cover
Final Filter
EXHAUST FILTER REPLACEMENT
WARNING
Wear adequate protective devices and use techniques to
prevent contamination of the laboratory environment. Filter
exchange should be accomplished by knowledgeable
personnel who perform sterilization procedures or are
trained for the safe handling of radioactive materials.
Some users prefer to wet the filter media with a steam or
aerosol generator to increase adhesion of particles.
To remove pre-filter –
remove six (6) screws that secure the
pre-filter cover. Slide the filter out. Slide new filter into the
housing and secure cover in place.
To remove final filter –
loosen the
nuts above the springs to unclamp
the filter. Continue turning the nuts
until they contact the upper
flange of the spring bracket
and lifts the plenum away from
the filter approximately 1/8 inch.
Slide the old filter out (the rods will support
the upper plenum and duct work). Insert the
new final filter. Turn the four (4) nuts sown
to compress the springs. Inspect seal after
installation and periodically thereafter.
26
Dimensions are nominal and illustrations and specifications are based
on the latest product information available at the time of publication.
The right is reserved to make changes at any time without notice.
SAFEAIRE
®
LABORATORY FUME HOODS
OPERATION, MAINTENANCE AND INSTALLATION INSTRUCTIONS
MAINTENANCE & ADJUSTMENTS
SERVICING SUPPLY CHAMBER AIR FILTER –
AUXILIARY AIR FUME HOODS
The supply chamber air filter is located in the supply air
chamber. The change out of the filter requires the removal of the
louver panel. It is the panel consisting of all louvers for bypass
air to enter when the sash is closed. Refer to Page 21 and 22
for instructions on how to remove the louver panel.
1. Remove the perforated grille that covers the bottom of the
chamber. Remove a series of sheet metal screws that
secures the front of the grille in place, tilt this edge down
and pull out to release the grille from the angle at the rear of
the chamber.
2. The removal of the perforated grille provides access to the
metal enclosure that sandwiches the filter material. This
metal enclosure is trapped at the back by two short flanges
and rests on top of an angle mounted at the front of the
chamber. To allow the front of the metal enclosure to drop
down, turn the two screws found on the sandwiched
enclosure one-half turn, this releases a metal plate that
overlaps the angle on the front of the chamber.
3. With the removal of the enclosure and separation of the top
and bottom perforated panels, the filter material can be
cleaned or replaced. The various stages found inside the
supply chamber provides a slow release of air and an even
distribution.
4. Be careful to re-install the pieces in the chamber in the same
manner as removing them. This is to ensure a
functional supply air fume hood.
Screw
Cover
Filter Element
Assembly
Auxiliary Air
Chamber
Perforated
Grille
Sheet Metal Screws
Hood
Superstructure
Pre-Filter
Screws
Filter Housing
Loosen Nut
to Release
Final Filter
Summary of Contents for SAFEAIRE series
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