Solberg Replacement Filter Elements User Manual

SOLBERG

®

Replacement Filter Elements

Maintenance Manual

www.solbergmfg.com

Note: Please read the maintenance instructions given by the OEM for the machinery first. The OEM's manual should be
adhered to in order to protect the equipment. Solberg Manufacturing, Inc has made every effort to make sure that these
instructions are accurate but is not responsible for any typos, slight variations or for human errors that may occur.

Solberg Manufacturing, Inc., 1151 Ardmore Itasca, IL 60143 USA

Ph: 630.773.1363 Fax: [phone] Email: [e-mail] Web: www.solbergmfg.com

Rev: MMEL-6294

1. Filtration Rules of Thumb
General: For peak output performance from a compressor, blower, vacuum

pump, engine, or any other machine that consumes air, one must have clean,
unrestricted air. Proper filtration can help stabilize the working environment within
rotating equipment even when the external conditions may be quite severe. A
critical component in creating the right working conditions is filter sizing. With the
properly sized filter, equipment will run smoothly over its entire expected
operating life.

A major factor in filtration and filter sizing is air velocity through the filter media.
Generally, the slower the velocity of air through a media the higher the filter
efficiency and, conversely, the lower the pressure drop. Therefore, the primary
goal in filter sizing is to optimize the velocity of air through the media (sometimes
called face velocity).

Rule of Thumb #1: Always begin with the filter cartridge requirements when
sizing a filter. Once the appropriate element has been selected then move on to
the housing requirements.

Rule of Thumb #2: Always ask or specify a filter based on a micron rating with
filtration efficiencies. As an example, stating a requirement for a 1-micron filter is
misleading because no efficiency rating has been specified. A 1-micron filter at
95-% efficiency may be less efficient than a 5-micron filter at 99% efficiency. For
proper air system performance in light and industrial duty environments, a filter
with a minimum of 99% filtration efficiency at 5 microns is required.

Rule of Thumb #3: Size your filter correctly by understanding the impact air
velocity through a media has on efficiency and pressure drop. Maintain the
suggested Air-to-Media ratios listed below based on the external environment
listings and Filtration efficiency needs.

Solberg Manufacturing, Inc., 1151 Ardmore Itasca, IL 60143 USA

Ph: 630.773.1363 Fax: [phone] Email: [e-mail] Web: www.solbergmfg.com

Page 2

Rev: MMEL-6294

SOLBERG

Filtration Efficiency

Requirements

Environmental Conditions Air to Media Ratio

(99+% efficiency)

Industrial Grade 2-micron

Paper

Industrial Grade 5-micron

Polyester

Industrial Grade 1-micron

Polyester

Industrial Grade 0.3-micron

HEPA Glass @ 99.97%
efficiency

Table 2

Industrial Duty (clean,
office/warehouse-like)
Severe Duty (workshop,
factory-like)
Extreme Duty (Foundry,
Construction-like)
Industrial Duty (clean,
office/warehouse-like)
Severe Duty (workshop,
factory-like)
Extreme Duty (Foundry,
Construction-like)
Severe Duty (Foundry,
Construction-like)
Industrial Duty (clean
office/warehouse-like)
Severe Duty (workshop,
factory-like)
Extreme Duty (Foundry,
Construction-like)

30 CFM

/ft

15 CFM/ft
10 CFM/ft
50 CFM/ft
40 CFM/ft
25 CFM/ft
10 CFM/ft
10 CFM/ft

7 CFM/ft
5 CFM/ft

2

2

2

2

2

2

2

2

2

2

(51m

(25.5m

(17m
(85m
(68m

(42.5m

(17m
(17m
(12m

(8.5m

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

3

/h)/cm

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 10” to 15” / 250­380mm H2O 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

3

velocity of 6,000 ft/min (10200m

/h) or less is suggested through the outlet pipe.

The table below lists the suggested flows based on pipe size:

2

2

2

2

2

2

2

2

2

2

Solberg Manufacturing, Inc., 1151 Ardmore Itasca, IL 60143 USA

Ph: 630.773.1363 Fax: [phone] Email: [e-mail] Web: www.solbergmfg.com

Page 3

Rev: MMEL-6294

SOLBERG

Pipe Size

(inches)

1/4" 6 CFM 10m3/h 1 ¼" 60 CFM 102m3/h 6" 1,100 CFM 1870m3/h
3/8" 8 CFM 14m3/h 1 ½" 80 CFM 136m3/h 8" 1,800 CFM 3060m3/h
1/2" 10 CFM 17m3/h 2" 135 CFM 230m3/h 10" 3,300 CFM 5610m3/h
3/4" 20 CFM 34m3/h 2 ½" 195 CFM 332m3/h 12" 4,700 CFM 7990m3/h

1" 35 CFM 60m3/h 3" 300 CFM 510m3/h 14" 6,000 CFM 10200m3/h
4" 520 CFM 884m3/h
5" 800 CFM 1360m3/h

Table 3 *Note: This information is for general use only. A qualified engineer must properly design each system.

Max Airflow

Pipe Size

(inches)

Max Airflow

Pipe Size

(inches)

Airflow

Element Specifications

Temperature Range: -15° to 220°F / -26° to 105°C
Filter Change-Out Differential: 10” to 15” / 250-380mm H2O Over Initial Delta P

Media

Micron Rating

Standard Paper 99+% @ 2 micron
Standard Polyester 99+% @ 5 micron
“S” Series Wire Mesh Epoxy Coated Wire Mesh
“Z” Series Polyester 99+% @ 1 micron
“HE” Series HEPA 99.97% @ 0.3 microns
“U” Series Polyester 99+% @ 25 micron
“W” Series Polyester 99+% @ 100 micron
“S2” Series Stainless Steel Wire Mesh
“AC” & “ACP” Series N/A
“Y” Series Polypropylene 99+% @ 5 micron

Table 4

Temperature Range: -15° to 385°F / -26° to 196°C
Filter Change-Out Differential: 10” to 15” / 250-380mm H2O Over Initial Delta P

Media

Micron Rating

“MX” & “MXD” Series – Nomex Cloth 99+% @ 5 micron

Table 5

Solberg Manufacturing, Inc., 1151 Ardmore Itasca, IL 60143 USA

Ph: 630.773.1363 Fax: [phone] Email: [e-mail] Web: www.solbergmfg.com

Page 4

Rev: MMEL-6294

SOLBERG

Element Cleaning
Some types of Solberg inlet filter elements can be cleaned and reused.

However, damage can occur to an element during cleaning so it is imperative
that care is taken during disassembly, cleaning and re-assembly. Damaged
elements can allow particulate bypass, which will damage rotating equipment.

A. Polyester Element: The polyester element may be washed in warm

soapy water, vacuumed, gently blown out or replaced. The element
should be dry before reinstallation.

B. Paper Elem ent: The paper element may be lightly blown with low

pressure air. It is disposable and in most cases should be replaced with a
new element.

C. Polyurethane Prefilter: The prefilter may be washed as a sponge or

replaced to give the element a longer service life.

D. Epoxy Coated Wire Mesh and Stainless Steel Wire Mesh Elements:

Cleaning instructions similar to polyester, except mild solvents may be

used.
E. Activated Carbon Element: Not cleanable
F. Polypropylene Element: Cleaning instructions similar to polyester
G. Nomex Cloth Element: Cleaning instructions similar to polyester

If you are not confident that the integrity of the element was maintained during
cleaning, it is recommended that a new element be installed. Also, spare parts
such as gaskets, wingnuts and washers can be supplied upon request.

Removing element for service/maintenance.

A. Remove retaining hex head/wing- nut and washer carefully, and then

remove element. Some elements will have a top plate that should also be

removed.
B. Clean sealing surfaces of housing, top & base plates, and element

endcaps so that they are free of dirt or any other particulate.

*WARNING*

Failure to comply with these instructions
may result in system or pump contamination.

Solberg Manufacturing, Inc., 1151 Ardmore Itasca, IL 60143 USA

Ph: 630.773.1363 Fax: [phone] Email: [e-mail] Web: www.solbergmfg.com

Rev: MMEL-6294

Page 5

SOLBERG

Securing Element.

A. Place new or cleaned element evenly on base plate. Be sure element

seats properly on base and there is no dirt or particulate present on

sealing surfaces.
B. Place top plate (if necessary) on element by centering on tap bolt.
C. Secure washer and wing nut to end cap (or top plate) and tap bolt.

Element must be tightly secured. Note: DO NOT over tighten!

*WARNING*

Defective installation may cause system or
pump contamination. Use only genuine
Solberg replacement parts.

MAINTENANCE RECOMMENDATIONS

1. Pressure drop readings are recommended to have an effective air filter.
Always document initial pressure drop during start-up when element is clean.
Replacement cartridge is needed when system experiences 10” to 15” / 250­380mm H2O higher pressure drop above the initial reading. Refer to page 4
for instructions.

2. Always check replacement cartridge gaskets to insure they are adhered
uniformly along the end caps during handling. If not, contact Solberg
Manufacturing, Inc. immediately. Do not modify or change from Solberg
specified parts!

3. Always check inlets/outlets, element base and its components when replacing
element to insure cleanliness. Wipe clean if necessary.

4. Operate only when a proper seal exists.

Solberg Manufacturing, Inc., 1151 Ardmore Itasca, IL 60143 USA

Ph: 630.773.1363 Fax: [phone] Email: [e-mail] Web: www.solbergmfg.com

Page 6

Rev: MMEL-6294

SOLBERG