Labconco Protector ClassMate Laboratory Hoods 69716 - Manual (Page 32)

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Chapter 4: Theory of Operation and Safety Precautions
behind the front and under the airfoil to help control
fluctuations in face velocity, which occur as the
sash is closed.
The major components in Protector ClassMate
Laboratory Hoods are outlined as follows and in
Figure 4-1, and Figure 4-1A:
1. Clear, tempered safety glass sides, back and
baffle provide maximum visibility. All glass
components except sashes are removable for
cleaning. Visibility up to 45" on sides and back.
2. Unique sash provides maximum visibility of
39" high while conserving energy. Vertical-
rising sash may be raised from a closed to 18"
operating height. Exhaust volume, and blower
sizing is based on the 18" height. For loading
and cleaning, the sash raise up above the sash
stop.
3. Anti-racking shaft provides smooth vertical
sash movements.
4. By-pass airflow design ensures relatively stable
face velocities.
5. Large usable interior work depth of 26" and
interior height of 48" provide ample working
space.
6. Baffle directs airflow to the rear of the interior
to provide efficient airflow. The baffle may be
removed or pivoted down for cleaning purposes
only.
7. Tissue Screen located directly below the
exhaust outlet prevents debris from potentially
damaging the remote blower.
8. Interior cover plates are removable for easy
access to plumbing.
9. Lift-away front panel provides easy access to
electrical wiring, sash weights, and lighting
fixtures.
10. Energy efficient fluorescent lighting is located
behind a tempered safety glass shield mounted
to the top of the hood interior. The factory