Labconco Protector ClassMate Laboratory Hoods 69716 - Manual (Page 42)

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Chapter 5: Using Your Protector ClassMate Fume Hood
Operating the A-Style
Combination Sash
Some hood models have additional energy saving
sashes called A-Style Combination Sashes in place of
vertical-rising and pivoting 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. Two sets of integral sash stops 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. (See Figure 5-2)
Figure 5-1
A