Labconco Protecto PVC Laboratory Fume Hoods 14181 Series - Manuel (Page 27)

Chapter 4: Performance Features & Safety Precautions
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Original instructions
The integral washdown system in either PVC Fume Hood allows the operator
the ability to wash behind the baffle and ensure that a build-up of Perchloric
salts or other acids does not develop in that location. All of the washdown
water from the internal spray nozzles is contained behind the baffle and does
not interfere with normal operations being performed inside the hood. The
washdown water is collected in the hood drain trough.
The hood liner must be washed down manually by the operator. The internal
washdown system can be connected to the wash rings used in your hood
exhaust system. The water used in the spray wash rings is collected in the
hood drain trough once it has been allowed to flow down and cleanse the duct
thoroughly.
WARNING: It is recommended that the PVC Hood be washed
down thoroughly after every usage for 10 minutes, at least once
a day.
AVERTISSEMENT: Il est recommandé que le capot PVC être
lavé soigneusement après chaque usage pendant 10 minutes, au
moins une fois par jour.
1. Unique sash provides maximum visibility of 37.5" high while
conserving energy by limiting sash travel to 28". Vertical-rising sash
may be raised from a closed to 28" operating height. Exhaust volume and
blower sizing are based on the 28" height. Optional sash stops are
available to limit sash height and reduce energy usage. The PVC
Perchloric Acid Hood has a glass sash specifically used for Perchloric
Acid. The PVC Acid Digestion Hood has a Lexan sash specifically used
for all acids (excluding Perchloric acid) including hydrofluoric acid (HF).
NOTE: Hydrofluoric acid will etch or fog standard plate glass, but not
Lexan plastic.
2. By-pass airflow design ensures relatively stable face velocities.
3. Large usable interior work depth and interior height of 48" provides
ample working space.
4. Baffle directs airflow to the rear of the interior to provide efficient airflow.
The baffle may be removed for cleaning purposes only.
5. Exterior access cover plates are removable for easy access to plumbing
valves when access through the sides is not available.
6. Lift-Away™ front panel provides easy access to electrical wiring, sash
weights, and lighting fixtures.
7. Energy efficient fluorescent lighting is located behind a laminated safety
glass shield mounted to the top of the hood. The factory-wired lighting is
serviceable from outside the hood cavity.
8. Low-mounted, factory-wired light and blower switches are ADA
compliant.
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