Labconco Protector Stainless Steel Perchloric Acid Laboratory Fume Hoods 1308 Series - Manuel (Page 21)

Chapter 3: Getting Started
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Original instructions
The exhaust duct system for a Perchloric Fume Hood should be
run in a vertical position and feature horizontal runs only
where it cannot be avoided. Should a horizontal run be a part
of your exhaust system, it should be sloped downward toward
the hood to prevent the pooling of the washdown water and
perchloric acid salts or acids in the duct.
Le système de conduits d'échappement pour un Perchloric
Hotte doit être exécuté dans une position verticale et horizontale
fonctionnalité fonctionne uniquement lorsque cela ne peut être
évité. Si une course horizontale être une partie de votre système
d'échappement, il devrait être en pente descendante vers le
capot pour empêcher la mise en commun de l'eau de lavage à
grande eau et les sels de l'acide perchlorique ou acides dans le
canal.
CAUTION: Perchloric Acid Fume Hoods must never be
manifolded into a common exhaust system. They require a
dedicated exhaust system.
ATTENTION: Perchloric Acid hottes ne doivent jamais être un
tuyau collecteur dans un système d'échappement commun. Ils
exigent un système d'échappement spécifique.
Connecting to the Exhaust Washdown
The entire exhaust duct system must have an adequate washdown system. This
includes the exhaust ductwork located between the exhaust blower and the hood
structure, the exhaust blower, and any ductwork located on the outlet side of the
blower. Wash rings are recommended to be placed in the exhaust duct system
approximately every 8 to 10 feet and after every change in direction to provide an
adequate washdown. A drain should be provided in your exhaust blower and this
washdown water and effluent material can be drained from the exhaust blower
back directly into the exhaust duct for disposal. The Perchloric Acid Hood was
designed to be connected to the washdown valve system to provide water to the
wash rings. The plug is located on top of the hood near the first washdown nozzle.
Plumb from the plugged connector with a 3/8" rigid polyethylene, copper, or
stainless steel line.
Connecting to the Washdown Drain
The Protector Perchloric Acid Hood has been supplied with a 2" nominal (2.375"
OD) Type 316 pipe drain. Connect the 2" pipe to your floor drain. Be sure the
connection is either fully solvent bonded or leak tight. See Figure 3-2.
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