Labconco Bulk Powder Stations 3962622 - Manual (Page 11)

Chapter 2: Prerequisites
Product Service 1-800-522-7658 7
Exhaust and Blower Requirements
Bulk Powder Filtered System
The XPert Bulk Powder Filtered Balance System uses an integral motorized
impeller to draw room air past the operator and through the enclosure. This
contaminated air is then pulled through the rear perforated baffle and pushed
through the HEPA filter. The HEPA-filtered exhaust air is then forced out the top
of the enclosure. An optional carbon filter may be installed on the downstream side
of the HEPA filter located under the exhaust diffuser screen to protect against
nuisance odors.
The HEPA-filtered exhaust air can be re-circulated into the laboratory or exhausted
outside with the addition of the Thimble Exhaust Connection and remote blower
listed in Chapter 7.
Bulk Powder Filtered Station
The XPert Bulk Powder Filtered Balance Station does not include the motorized
impeller and must be exhausted to the outside by a remote blower. The remote
blower may be activated from the blower switch on the enclosure. See Electrical
Requirements in Chapter 2 and Electrical Supply Connections in Chapter 3. Only
one 10" dia. exhaust connection is required for the 5' and 6' XPert Filtered Balance
Stations to exhaust to the outside.
Data for the exhaust volume, noise pressure and enclosure static pressure loss is
listed for each filtered enclosure model at face velocities of 60, 80, and 100 fpm.
Proper blower selection may be determined from these exhaust requirements and
the total system static pressure loss. For outside exhaust, the enclosure must be
connected to either a dedicated blower or a house exhaust system.
Labconco offers accessory remote blowers listed in Chapter 7. Contact Labconco
for blower sizing assistance.
Enclosure
Width Model Description Face
Velocity
(fpm)
Exhaust
Volume
(CFM)
XPert Station
Initial Static
Pressure Loss with
HEPA Filter (in
H
2
O)
XPert System
Max.
Equivalent
Resistance of
10" Duct (ft)
XPert
System
Max.
External
Static
Pressure
XPert
System
Noise
Pressure
db(A)
5'
5' XPert Bulk Powder
Filtered Balance System
or Station
60
80
100
290
385
480 .38"-.46"
.55"-.67"
.72"-.85" 450
230
120 .22"
.20"
.15" 52-56
58-63
63-67
6'
6' XPert Bulk Powder
Filtered Balance System
or Station
60
80
100
350
465
580 .46"-.56"
.67"-.81"
.87"-1.03"
300
150
70
.20"
.18"
.13" 55-57
61-63
67-69
If the enclosure is connected directly to a house exhaust system, an adjustable
damper (or valve) must be installed to control the airflow properly. This is equally
important when a house exhaust system is controlling filtered enclosures. See
Chapter 7 for accessory Adjustable Damper ordering information.