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COVID-19 air filtration

While current COVID-19 theory is such that the COVID-19 virus is transmitted via larger liquid droplets emitted when a person speaks, coughs or sneezes, the WHO indicates that research into the virus becoming a transmissible aerosol (e.g. transmitted through the particles floating in the air) is still inconclusive. While the research is finalized, it may be prudent to start using LEV as a capture and control solution. In other words, the absence of scientific certainty should not prevent a prudent response.

Here are a few links to articles written about the capture and control of Covid-19 emmisions:

  • https://www.osha.gov/SLTC/covid-19/dentistry.html
  • https://www.ashrae.org/file%20library/technical%20resources/covid-19/si_a19_ch09healthcarefacilities.pdf
  • http://bpequip.com/indoor-air-flow-and-covid-19/
  • https://www.bassettmechanical.com/covid-19-educational-series-part-1-indoor-air-quality/
  • https://www.sciencedirect.com/science/article/pii/S0160412020317876
  • https://www.ashrae.org/file%20library/about/position%20documents/pd_infectiousaerosols_2020.pdf
  • https://www.cdc.gov/coronavirus/2019-ncov/community/guidance-business-response.html
  • https://www.osha.gov/Publications/OSHA3990.pdf
  • https://www.jamda.com/article/S1525-8610(20)30320-0/pdf
  • https://www.cdc.gov/coronavirus/2019-ncov/community/office-buildings.html
  • https://aiha-assets.sfo2.digitaloceanspaces.com/AIHA/resources/Guidance-Documents/Reopening-Guidance-for-General-Office-Settings_GuidanceDocument.pdf
  • http://content.aia.org/sites/default/files/2020-05/ReOccupancyAssessmentTool-V01.pdf
  • COVID-19 air filtration

    (02-013) Roll-Flex SCF Weld Fume, Dusts & Gases - 700 to 1,400 CFM - 6.5” Ø Extraction Arm* **
    Image for Model 700
    Roll Flex SECF Mobile mechanical filter for welding fumes, grinding dust etc. Compact, flexible and self cleaning. The extraction arm captures fume and dust at a distance of 30-50 cm (12-20'') from the source and within an area of 0.5m (20'') diameter. Black hood w/ optimized airflow & ring handle & built in damper. Flame proof PVC hose 160mm (6.5”)Ø. This unit can also be fitted with an activated carbon filter which removes gases from polluted air.
    Attachments
    (02-02) PCH-1 - Heavy Dusts & Smoke - Self cleaning filter system built in - 800 to 1500 CFM - 7” Ø Extraction Arm* **
    Image for Model 542
    Portable cartridge collector, ideal for medium and heavy-duty maintenance or production welding, grinding and most dust producing applications. It comes complete with 7' EZ-Arm® high flow extractor (with damper), (1) Clean2® filter cartridges (150ft² of media), manual VIBRA-PULSE® filter cleaning system, a 1.5 HP TEFC motor, backward incline blower, removable 5 gallon external dust drawer, 8” front wheels, and 5” rear swivel casters.
    Attachments
    001 - Spec Drawings:
    004 - Videos:
    017 - DWG and RVT models:
    (02-03) PCH-2 - Heavy Dusts & Smoke - Self cleaning filter system built in - 1000 to 2200 CFM - 7” Ø Extraction Arm* **
    Image for Model 543
    The PCH-2 is a portable cartridge collector, ideal for medium and heavy-duty welding, grinding, cutting and other heavy dust producing applications.

    Rolled into position with the aid of 2 - large 8” diameter front wheels and 2 - 5” diameter locking rear casters, the PCH-2 easily navigates common obstacles found on the shop floor such as air hoses, extension cords, etc. The 2 foot wide “Push” handle, doubles nicely as a “Cord Caddy” for the 12Ga, 25’, safety yellow extension cord that comes standard with all 115/1/60 models.

    The HEAVY DUTY extraction arm is easily placed above or next to the emission source, hovering in place, allowing the fumes to be extracted at source before they contaminate they work environment or enter the operators breathing zone.

    Coming standard with a 10' EZ-Arm® high flow extractor (with damper), this unit is upgradeable to 14’ or 17’, single or dual extraction arms. (2) Clean2® high efficiency filter cartridges, clean the contaminated air to an efficiency level above 99.5% while allowing for optional HEPA or gas phase filters to be installed as required.

    Main filters can be cleaned in place, without removal, by simply activating the VIBRA-PULSE® filter cleaning system, a simple reverse pulse cleaning mechanism that cleans the filters with compressed air from the inside out. The dust is then easily removed from a cam-lock sealed drawer.

    Comes standard with a 115V/1/60 1.5 HP 1000 CFM fan, the PCH-2 can also be ordered with a 1200 CFM 3HP, or 1500 CFM 5HP, 230-460/575V/3/60Hz Fan. All units come complete with EPact Baldor Super E, Premium efficiency motors and carry a complete system warranty of 3 years.

    (02-04) Mobi-Pulse 1 (700 to 1400 CFM) **
    Image for Model 639
    The Mobi-Pulse 1 is portable cartridge collector with a capacity up to 800 CFM. This unit is ideal for medium and heavy-duty maintenance or Low to Medium production welding, grinding and most dust producing applications. The standard Unit comes complete with (1) only 10' Flexi-I Extraction arm (6" dia.) with damper, (1) only Clean2® filter cartridge (150ft² of media), manual JET PULSE filter cleaning system, a 1 HP 115V/1/60 TEFC motor, centrifugal blower, removable 5 gallon dust drawer, 5” front (fixed) & rear (swivel) casters.
    Attachments
    (02-05) Mobi-Pulse 2 (800 to 2200 CFM) **
    Image for Model 640
    The Mobi-Pulse 2 is a 800 to 1500 CFM portable cartridge collector, ideal for medium and heavy-duty maintenance or production welding, grinding and most dust producing applications. It comes complete with 10' Flexi II Extractor Arm (8" dia.) with damper, (2) Clean2® filter cartridges (150ft² of media each), manual VIBRA-PULSE® filter cleaning system, TEFC motor, removable 10 gallon external dust drawer, 8” front wheels, and 5” rear swivel casters.
    Attachments
    (02-06) PAC91 - Flammable Gases & Volatile Organic Compounds - 800 to 1,600 CFM - 7” Ø Extraction Arm **
    Image for Model 147
    Portable air cleaner with extraction arm to capture dust, mist, odours and gases right at the source. The patented self-supporting, flexible pickup hose can be easily positioned in all three axes, allowing complete capture to help comply with OSHA (when properly used and maintained) and insurance regulations. Applications include: coolant mist, carbon dust, plastic smoke, grinding dust, sanding dust, welding smoke, lint, fibers, and fumes.

    Attachments
    001 - Spec Drawings:
    004 - Videos:
    014 - How It Goes Together:
    017 - DWG and RVT models:
    (02-065) Multi-Flex Portable Mist collector c/w 10' long Flexi-II Arm **
    Image for Model 709
    Efficient portable oil mist filter with superior FLEXI-II Extraction Arm
    (02-07) MiniPac - Flammable Gases & Volatile Organic Compounds - 650 to 1000 CFM - 7” Ø Extraction Arm **
    Image for Model 25
    Portable air cleaner with (1) 7’ long E-Z Arm® high flow extractor (1) 2” aluminum mesh pre-filter, (1) 95% bag filter (28ft² of media), a ¾ HP TEFC motor, 115/230/1/60Hz (9.8/4.9 amps), and 5” casters, (2) fixed and (2) swivel with brakes.
    Attachments
    001 - Spec Drawings:
    004 - Videos:
    017 - DWG and RVT models:
    (02-08) MiniVac - Multipurpose Low flow - 150 to 300 CFM - 2.5” Ø Extraction Arm **
    Image for Model 127
    MiniVac portable air cleaner is designed for source extraction and filtration of dust and smoke. These small air cleaners are ideal when combined with self-supported extraction arm(s) or for ducted "Source-capture" applications.


    Airflow:
  • 120 CFM - single arm
  • 210 CFM - dual arms (105 CFM/arm)
  • 250 CFM - three arms (80 CFM/arm)
  • 300 CFM@ 1.5" w.g. (no arms)
    Attachments
  • (02-09) Mini Flex - (12''L x 13''W x 20''H, 2xØ3 inlet @ 100 CFM) **
    Image for Model 669
    Soldering Fume Collector with a (1) 1" Poly Filter, (1) 99.97% HEPA filter, 1" charcoal filter, a 200 Watt motor, 115/1/60Hz (0.85 amps), and Aluminum Hood and 2 - 3" x 42" long hose.
    Attachments
    (03-01) DCH-1 - Heavy Duty Dusts & Smoke - Self cleaning filter system built in - 300 to 800 CFM - 6” Ø inlet **
    Image for Model 174
    Cartridge collector with (1) Clean 2® cartridge filter (150ft² of media each), manual VIBRA-PULSE® filter cleaning system, and 6" collar on top. Includes either a 5 gallon external dust drawer or 10 gallon pail and hopper.
    Attachments
    (03-03) DCH-2 - Heavy Duty Dusts & Smoke - Self cleaning filter system built in - 600 to 1,200 CFM - 8” Ø inlet **
    Image for Model 31
    Cartridge collector with (2) Clean 2® cartridge filter (150ft² of media each), manual VIBRA-PULSE® filter cleaning system, and 8" collar on top. Includes a 10 gallon external dust drawer or tray.
    Attachments
    0001 - Installation Examples - How products go together:
    001 - Spec Drawings:
    003a - Video Case Study:
    004 - Videos:
    006 - System Layouts:
    017 - DWG and RVT models:
    (03-05) WF - Weld Fume, Dusts & Gases - Cleanable filters - 300 to 1400 CFM - 6” Ø inlet **
    Image for Model 574
    Wall-mounted mechanical filter unit c/w direct mount P-Max fan. The unit comes standard with either a spun-bound polyester (washable) filter. Designed for use with extraction arms, and/or ducted applications.
    (03-051) WF-SC - Weld Fume, Dusts & Smoke - Jet pulse cleaning filter system built in - - 300 to 1400 CFM - 6” Ø inlet .
    Image for Model 696
    Ideal for workstations that required a ''self-Cleaning'' filter system. With up to 99,9% filter efficiency the Wall-Flex ECO series cartridge collectors extract fumes and dust via a capture device such as a fume extractor. Once the contaminant is capture and filtered by the cartridge it is then easily 'reverse-pulsed' off the filter with compressed air.
    1phase/1.5 HP/115V/60Hz

    This allows the for cost effective filter maintenance and ensures constant capture at source.

    The access to the “maintenance-free” replaceable cartridge filter is easy and changing it takes just a couple of minutes.

    Some of the added benefits are:
  • Longer filter life
  • greater reliability: no belts or pulleys to replace.
  • Low operation costs
  • Greater user satisfaction
  • (03-06) WFSC - Weld Fume, Dusts & Smoke - Self cleaning filter system built in - 300 to 800 CFM - 6” Ø inlet **
    Image for Model 575
    Wall-mounted mechanical filter unit. The unit comes standard c/w Vibra-Pulse cleaning system, washable filter, hopper and 5 gallon drum. Designed for use with extraction arms, and/or ducted applications.

    600 CFM @ 4" w.g.
    (03-061) CF-ECO Welding Fume and Dust Filter. Self Cleaning system - 1400 CFM “Free-Blowing” Ø8'' Inlet **
    Image for Model 704
    CF-Eco is made for welding and soldering fume
    and lighter dust. It is equipped with
    self-cleaning cartridge filter and built in
    fan with an aluminium impeller.


    Filtration:


    - With up to 99,9% filter efficiency the CF-ECO
    Cartridge Filters will clean the
    premises of welding fumes and light
    grinding dust. The cleaned air is recirculated
    into the premises, with no heat
    loss at all.
    Attachments
    (05-01) EZ Bench - Light dusts - Washable and/or disposable filters - 36''W X 24''D (800 CFM)**
    Image for Model 596
    Easy Bench – A 800 CFM (500 CFM with HEPA or AD Module)downdraft table designed for the operator. Standard desk height with full leg room for maximum comfort and concentration. Simple Source Capture. Removes dust, fumes, and odors, for a cleaner, healthier work environment, and
    improved productivity for close, fine hand work. Easy Filter Access. Standard panels slide in and out from the front, with easy-seal magnetic covers.
    Attachments
    001 - Spec Drawings:
    002 - Brochures:
    017 - DWG and RVT models:
    (05-03) DTH800 - Heavy dusts & smoke - Self cleaning filter system built in - 24''D X 32’’W (800 CFM)* **
    Image for Model 23
    pre-engineered downdraft table complete with 1 Clean 2® 150 ft2 cartridge filter, integrated fan with TEFC direct drive class II motor and external dust tray generating 800 CFM with 150 FPM downdraft velocity. The DTH-800 draws contaminants away from workers’ breathing zone without hindering movement making these tables an ideal solutions for most welding and light dust/smoke applications.
    (05-04) DTH1700 - Heavy dusts & smoke - Self cleaning filter system built in - 24''D X 48’’W (1,700 CFM)* **
    Image for Model 49
    The DTH-1700 is a Self-Contained pre-engineered Down Draft table comes complete with an integrated Fan and filtration system in addition to it's 24"D X 48"W work surface and 18" tall removable side & back shields generating 1400 CFM with 208 FPM downdraft velocity. The DTH-1700 draws contaminants away from workers’ breathing zone without hindering movement; large work area meets range of applications. Its use of (2) CLEAN-2 cartridge filters and the manual VIBRA-PULSE filter cleaning system makes this unit the ideal solution for most welding and light dust/smoke applications.
    (05-05) DT3000V2 - Heavy dusts & smoke - Self cleaning filter system built in - 42''D X 66’’W or 42'' X 96 (3,000-4500 CFM)**
    Image for Model 373
    The DT3000 is a completely self-contained pre-engineered Downdraft table. Comes complete with an integrated 3HP or 5HP energy saving blower, high efficiency cartridge filters and automatic self-cleaning system. Available in 2 standard sizes: 66" X 42" or 96 X 42" work surfaces at heights of 33".

    The DT3000 draws contaminants away from workers’ breathing zone without hindering movement; and allowing the workers to work/walk around all sides of the table. The DT-3000 uses (6) CLEAN-2 ULTRA high efficiency cartridge filters (150 SQ. FT. of media each / 900 SQ. FT. total) and the VIBRA-PULSE filter cleaning system allows those filters to be cleaned in place when they become saturated. All you have to do is activated the cleaning system and empty the tray.

    One of 2 powerful fan/motor combinations generate between 3000 and 4500 CFM.

    This solution is ideal for most welding, Grinding and cutting applications.

    Attachments
    (05-15) Sledgehammer Series Downdraft Tables **
    Image for Model 703
    The 'Sledgehammer' © series downdraft tables are designed to be a dual purpose Work station and Extraction solution.

    These tables draw contaminants away from workers’ breathing zone without hindering movement. Additionally, they provide a the most durable ¼” steel plate work surface (36” X 24”) on the market. Hence the name “Sledgehammer” ©

    The SLEDGEHAMMER is equipped with Jet-Pulse Cleaning that allows simple cleaning of the filter, which reduces filter costs dramatically*.

    Applications Include filtering of contaminants from the following applications: welding, grinding, de-burring, plastics, composites, sampling, batching, weighing, soldering, and finishing processes

    All contaminated air is filtered and returned to the facility.

    Please select filter options according to your application… when proper filters are selected, all ‘’Sledgehammer’’ © series downdraft tables comply to all Local and Federal clean air requirements.

    Need a larger work surface? Quite often the area at which the fume or contaminant is generated is much smaller than the work table required… In these cases, either place the “sledgehammer” © series table in the middle of 2 or more work tables or bolt multiple downdraft tables together (Contact your distributor for quantity discounts).

    (05-155) DCB Ductless Spray Booth 1400 CFM**
    Image for Model 842
    The 'DSB' Ductless Spray Booth series downdraft tables are designed to be a dual purpose Work station and filtration solution for aerosol fumes and other airborne gases & odors.



    These tables draw contaminants away from workers’ breathing zone without hindering movement. Additionally, they provide a most durable (¼”) steel plate work surface (36” X 24”)



    The DSB is equipped with a washable main filter which filters out any particulate, a secondary activated carbon filter and an optional third stage filter for a variety of adsorption medias.



    Also included are 2 – 2L trays located directly under the ventilation intake which allows for the collection of accidental spills.



    Applications Include spray painting with spray balms or air brushes, Gluing, open cans of paint, etc…



    All contaminated air is filtered and returned to the facility.





    Attachments
    001 - Spec Drawings:
    002 - Brochures:
    (10-00) 1000-D Commercial ''In-Line'' Filter housing and booster fans – (1000 CFM)* **
    Image for Model 296
    Model 1000 above ceiling air cleaner, 1000 CFM. Includes 2” polyester pre-filter, 95% main filter 39 ft2, ½” charcoal after filter and ODOR/EX deodorizer cartridge, ½ HP, 115V, 2 speed motor, 7.4 amps, includes 2 speed wall switch, one 12” outlet, (2) 8” inlets.
    Attachments
    001 - Spec Drawings:
    (10-005) 1500-D - Commercial ''In-Line'' Filter housing and booster fans (1500 CFM)* **
    Image for Model 171
    Model 1500 air cleaner 1500CFM w/2” polyester pre-filter, 95% main filter 54 ft2, ½” charcoal after filter, & ODOR/EX. ½HP, 115V, 2 speed motor, 9.9 amps, w/2 speed switch. Includes 16” dia. inlet & outlet collars, wall switch & cover plate.
    Attachments
    001 - Spec Drawings:
    004 - Videos:
    (10-02) F120 - Dusts, Mists & Gases - Multiple filter configurations available / Washable and/or Disposable filters - With Fan (1,000-2,000 CFM**)
    Image for Model 140
    1000 - 2000 CFM Ducted Industrial Air Cleaner that comes standard with (1) 4” deep 30% pleated pre-filter, (1) 65% bag filter, 120ft² of media, and a 2.0 HP TEFC motor 208-230/460/575/3/60Hz. Unit can be upgraded with different filter and fan packages to suit a variety of applications and contaminants.
    Attachments
    0001 - Installation Examples - How products go together:
    001 - Spec Drawings:
    002 - Brochures:
    004 - Videos:
    017 - DWG and RVT models:
    (10-03) F240 - Dusts, Mists & Gases - Multiple filter configurations available / Washable and/or Disposable filters - With Fan (2,000-4,000 CFM)* **
    Image for Model 46
    2000 – 4000 CFM Ducted Industrial Air Cleaner that comes standard with (2) 4” deep 30% pleated pre-filter, (2) 65% bag filter, 120ft² of media ea. and a 5 HP TEFC motor 208-230/460/575/3/60Hz. Unit can be upgraded with different filter and fan packages to suit a variety of applications and contaminants.
    (10-04) F360 - Dusts, Mists & Gases - Multiple filter configurations available / Washable and/or Disposable filters - With Fan (3,000-6,000 CFM) **
    Image for Model 209
    3000 – 6000 CFM Ducted Industrial Air Cleaner that comes standard with (3) 4” deep 30% pleated pre-filter, (3) 65% bag filter, 96ft² of media each, and a 10 HP TEFC motor 208-230/460/575/3/60Hz. Unit can be upgraded with different filter and fan packages to suit a variety of applications and contaminants.
    Attachments
    001 - Spec Drawings:
    002 - Brochures:
    017 - DWG and RVT models:
    (10-05) F480 - Dusts, Mists & Gases - Multiple filter configurations available / Washable and/or Disposable filters - With Fan (4,000-8,000 CFM)**
    Image for Model 58
    4000 – 8000 CFM Ducted Industrial Air Cleaner that comes standard with (4) 4” deep 30% pleated pre-filter, (4) 65% bag filter, 96ft² of media each, and a 15 HP TEFC motor 208-230/460/575/3/60Hz. Unit can be upgraded with different filter and fan packages to suit a variety of applications and contaminants.
    Attachments
    001 - Spec Drawings:
    002 - Brochures:
    017 - DWG and RVT models:
    (10-11) Modular Side Access Housing (size/flow to suit) **
    Image for Model 667
    The modular filter housing is a blower-less filtration housing designed with up to 6 stages of filtration for industrial applications. Designed to handle airflow between 500 & 5000 CFM depending on the number of units combined. Filter system comes standard with 3 sets of modular tracks to hold 1" or 2" or any filter with a 1" header. Filters ordered separately. CONSTRUCTION: 12/14/16 ga. Zinc coated steel cabinet finished with either powder coat finish or left galvanized, with "ZERO BY PASS" filter mounting system and Bolt-on side access doors. Blower less.
    (13-015) BI Direct Drive - Self Cleaning Wheels - Inverter Duty - (1,000 - 21,000 CFM)**
    Image for Model 867
    Direct Drive Fans, Arr. #4 c/w punched flanged outlet and motor. Motors are TEFC E-Pact 230-460V/575-600V/3/60/-3500 RPM. Wheels are heavy gauge, single thickness, self-cleaning wheels, dynamically balanced to ANSI S2.19-1989 specifications for smooth operation. Inlet and supporting bracket accessories are also available.


    NB: All Lev-Co BI fans come in a standard configuration of Clockwise rotation / Up-blast discharge. Alternate discharges can be adjusted by the installing contractor.
    Attachments
    001 - Spec Drawings:
    (13-03) P-Max - Direct Mount to Arms, Hose Reels... - (200 - 2,300 CFM)**
    Image for Model 51
    P-Max© "Local Exhaust" fans. Recommended for applications involving fume, smoke and light dust. Suitable for direct mounting to a mounting bracket, most extraction arms, filter units, hose reels and simple hose drops.

    NB: All Lev-Co P-max fans come in a standard configuration of Clockwise rotation / Top horizontal discharge. For alternate discharges, please indicate on your purchase order and approved submittal drawings. Alternate rotation is not available.