Labconco FilterMatPortable Exhausters 3970024 - Manual (Page 11)

7
Chapter 2: Prerequisites
Product Service 1-800-522-7658
If the FilterMate exhaust is to be connected to the house exhaust
system, it is recommended that 3970002 (115 Volt) or 3970022
(230 Volt) be ordered with thimble connections. The 6" diameter
thimble connection allows you to easily balance the exhaust
airflow.
HEPA Filter
Part #3707900 is 99.99% efficient on particles 0.3 micron. Normal
life expectancy is two to five years. See Chapter 5 for filter
changing procedure.
HEPA Filter Bag-In/Bag-Out Bag
Part #3776002 ensures containment of particulate matter during
filter changing operations. Cinching Strap #1968800 ordered
separate.
Carbon Filters
Provides the listed amount of granular activated carbon or treated
carbon. For estimated filter life, consult a Labconco Technical
Specialist and Labconco’s Chemical Guide.
Filter Classification Catalog # Carbon lbs.
Organic Vapors 3923400 12# activated carbon
Formaldehyde 3923401 14# treated carbon
Ammonia 3923402 16# treated carbon
Room Air Exchanges – For carbon-filtered models, accumulation
of vapor contaminants from the exhaust can be harmful when the
Rate of Generation exceeds the Rate of Room Exhaust. For a
saturated carbon filter the following mathematical equation can be
used to determine the minimum room exhaust rate:
Inlet Vapor Concentration (PPM) x FilterMate Airflow in CFM <
TWA (PPM) x Room Exhaust (CFM)
By equating both sides of the equation, the unknown will be the
required air changes in order to not exceed the TWA (Time
Weighted Average) for the chemical.
Location and Preparation
Requirements
When the FilterMate is connected to an enclosure, the enclosure
should be located away from drafts, traffic patterns, doors, fans,
ventilation registers, fume hoods, and any other air handling
!