Labconco Protector XL Floor-Mounted (Walk-In) Laboratory Fume Hoods 1128 Series - Manuel (Page 40)

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Original instructions
C
HAPTER
5
U
SING
Y
OUR
P
ROTECTOR
XL
Operating the Vertical-Rising Sash
Because of the Protector Hood counterbalanced sash mechanism, it will take only
a few pounds of force to move the sash up or down, and you can operate the sash
smoothly with one or two hands positioned anywhere along the handle. The
vertical-rising sash may be raised to a maximum 64" operating height. The
airflow requirements should be sized for the 64" operating height; if using sash
stops then the airflow requirements can be reduced by approximately 40% at 54".
See Chapter 2 for airflows.
Operating the Horizontal-Sliding Sashes
Horizontal-sliding sashes allow the operator the flexibility of arranging the sashes
at a position suitable for various procedures. The glass sashes have a 73.5" sash
opening providing a large viewing area. The airflow requirements are sized for
the 50% open sash condition for the 8' model and 25% for the 10', 12', and 16'
models.
Operating the A-Style Combination Sash
Some other hood models have additional energy saving sashes called A-Style
Combination Sashes in place of vertical-rising sashes. These combination sashes
allow the operator to use the hood with sashes either half open horizontally or
vertically to conserve energy. The horizontal sashes are used in normal operating
mode. Optional sets of sash stops can be installed to prevent raising the vertical
sash above the half-open and fully-closed positions unless manually defeated by
the operator. The airflow requirements are sized for the 50% open sash condition.
S
A
4'
H
5'
6' 8'
8' 10'
12' 16'