Labconco Protector XL Floor-Mounted (Walk-In) Laboratory Hoods 98606 - Manual (Page 20)

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Chapter 3: Getting Started
Vertical-Rising Sash
Installation for the 4', 5', 6',
& 8' Floor-Mounted Hoods
The Vertical-Rising Sash Floor-Mounted Hood has two
vertical-rising sashes. The rear vertical-rising sash
moves from the floor to full open and picks up the front
vertical-rising sash, which travels from the midpoint to
full open. The sash tracks should be adjusted left to
right to assure the sash will work properly. The
vertical-rising sashes are shipped installed in the tracks;
however, the counterbalance weights must be installed.
The large single sheet metal sash weight is installed in
the middle and attached to the upper front sash. The
two individual sash weights counterbalance the rear
vertical-rising sash; these weights have rollers and ride
in the rear sash tracks that straddle the middle sheet
metal sash weight. Install the rear weight tracks for the
individual sash weights with the #10-24 flathead screws
and #10-24 KEPS nuts supplied. See Figure 3-2 and
Figure 3-4. It is vitally important that the front upper
and lower sash tracks are fully aligned and the strap
plates are used to secure this alignment. See Figure 3-3
and Figure 3-4. Once the sashes are aligned and
operating freely, secure the lower base to the floor with
sealant or fasteners. (Hardware not supplied due to
installation variables.) Securing the lower base will
ensure the sashes will work freely.
As a last step, install the four rubber bumpers with #6
screws supplied. One set of rubber bumpers prevents
the front upper sash from traveling too low. The
second set of rubber bumpers prevent the rear lower
sash from touching the floor and provides a good sweep
of clean air across the floor. See Figure 3-3.
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