Solberg Inlet Vacuum Filters - Manual (Page 6)

Solberg International, Ltd., 1151 Ardmore Avenue, Itasca IL 60143
Ph: 630/616-4900 Fax: 630/773-0727 Email: [email protected] Web: www.solbergmfg.com
Vacuum Inlet Filters (Metric) March, 2000
Page 6
SOLBERG
Filtration Efficiency
Requirements
(99+% efficiency)
Environmental Conditions Air to Media Ratio
Light Duty (clean,
office/warehouse-like)
51 m
3
/h
Industrial Duty (workshop,
factory-like)
25.5 m
3
/h
Industrial Grade 2-micron
Paper
Severe Duty (Foundry,
Construction-like)
17 m
3
/h
Light Duty (clean,
office/warehouse-like)
85 m
3
/h
Industrial Duty (workshop,
factory-like)
68 m
3
/h
Industrial Grade 5-micron
Polyester
Severe Duty (Foundry,
Construction-like)
42.5 m
3
/h
Industrial Duty (workshop,
factory-like)
42.5 m
3
/h
Industrial Grade 4-micron
Polyester
Severe Duty (Foundry,
Construction-like)
25.5 m
3
/h
Industrial Grade 1-micron
Polyester Severe Duty (Foundry,
Construction-like)
17 m
3
/h
Light Duty (clean
office/warehouse-like)
17 m
3
/h
Industrial Duty (workshop,
factory-like)
12 m
3
/h
Industrial Grade 0.3-micron
HEPA Glass
Severe Duty (Foundry,
Construction-like)
8.5 m
3
/h
Rule of Thumb
#
4: Pressure drop is also caused by the dirt holding capacity of
the element. As the element fills up with dirt, the pressure drop increases. It is
important to document the pressure drop across a given filter when it is new and
then clean or replace it when the pressure drop increases by 250 mm to 380
H
2
O from the original reading.
Rule of Thumb #5: The inlet connection greatly influences the overall pressure
drop of the filter system. To minimize the restriction contributed by an inlet filter, a
velocity of 1,829 m/min or less is suggested through the outlet pipe. The table
below lists the suggested flows based on pipe size: