Labconco FilterMatPortable Exhausters 3970024 - Manual (Page 18)

14
Chapter 3: Getting Started
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e. Re-install the perforated plenum exhaust cover.
See Figures 3-5, 3-6 and 3-7 for combination HEPA/Carbon
installation.
Dual Carbon (For Models 3970003, 3970004, 3970023,
3970024)
For added carbon capacity or for adsorption of mixed vapors two
carbon filters may be installed. Use two carbon filters on dual
carbon FilterMate models 3970004 and 3970024. Replace the
HEPA filter with a carbon filter on the combination FilterMate
models 3970003 and 3970023. This procedure accommodates for
Organic Vapor/Formaldehyde, Organic Vapor/Ammonia, or
Formaldehyde/Ammonia combinations. Important: Dual
carbon filters do not provide any particulate protection.
Filter Type Appropriate Use
HEPA
3707900
HEPA filters are high-efficiency
particulate air filters having a particulate
removable efficiency of 99.99% for
particles with a diameter of 0.3 micron.
Organic Vapor
Activated carbon
3923400
Organic compounds designated by NIOSH
guidelines as acceptable for use with
chemical cartridge type respirators.
Concentrations in the enclosure’s work
area must not exceed the IDLH for the
chemical and the exhaust from the
enclosure must not exceed the TWA.
Formaldehyde
(Formalin)
3923401
Formaldehyde requires the use of an
impregnated carbon for the treatment of
formaldehyde. Concentrations in the
enclosure’s work area must not exceed the
IDLH for the chemical and the exhaust
from the enclosure must not exceed the
TWA.
Ammonia and
Amines
3923402
Ammonia, low molecular weight amines
and other bases designated by NIOSH as
acceptable for use with ammonia cartridge
type respirators. Requires the use of an
impregnated carbon. Concentrations in the
enclosure’s work area must not exceed the
IDLH for the chemical and the exhaust
from the enclosure must not exceed the
TWA.
CARBON
HEPA
CARBON
CARBON
CARBON