Lev-co
LEV-CO
182 N Port Road, Unit 3
Port Perry, Ontario L9L 0B7
App Support: 1-888-512-7173
Office: (905) 831-7001 / (888) 862-5356
Fax: (905) 831-7443 / (866) 885-1583
E-Mail: sales@lev-co.com
Animated diagram for Down Draft Tables
Down Draft Tables
1. What is it?
Sometimes the best solution for extracting welding fumes is right on the table. This is generally referred to as a Down Draft Table. The Downdraft Table serves as both a workbench and an air cleaner. A rigid grill supports the product, while an air cleaner below draws smoke and fumes down and away from the worker's breathing zone. A worker can weld, grind, and cut on the surface of the table while dust and fumes get sucked away from breathing air space.
2. Suitable applications
By combining the extraction system with a workbench, downdraft tables are very effective for safe work environments, and space-saving solutions. Soldering, spray-painting, and other benchwork applications are exactly what our downdraft tables are for.
3. Will it make my workplace safer?
Yes, but only when systems are configured, installed, and maintained for the correct use application. The filter selection is paramount to ensuring the reliability, effectiveness, and safety of the unit you use.
4. Suitable industries/environments
Downdraft tables are mainly designed with the idea of a workstation being integrated into the unit, so any application that requires fume extraction from a bench is ideal for a downdraft table. This includes soldering, grinding, spray painting, and welding. For a full list of industries, refer to our Industry solution page
5. Available models & variants
To see a full list of products, check out our catalog below.
6. Criteria to consider
Some important points to consider when purchasing:
  • What is the velocity or the air required to pull the fumes and dust down into the table (Capture Velocity)? (Add up the CFM for all of the inlets that will run at once)
  • What is the velocity at the Table surface required to achieve the appropriate capture velocity (Face velocity)?
  • Do I have enough filter media (Air to cloth ratio) in the collector?
  • Will it stand up to the working environment (Eg: is it made from Plastic or Steel?)
  • Filter cleaning: Does the filter cleaning system really work in your application?
  • What will be my filter, maintenance, and energy costs per year?
  • Are there any tertiary risks such as fire, explosion, etc, that I need to consider?
  • Surface area. How much space to you need for your application?
  • Capture velocity (can the filters accommodate the required capture velocity to capture the aerosol?)
  • Can the filters withstand the Pressure/abrasion/corrosion/etc?
  • Noise. Does your facility require a low operation noise level?
  • Portability. Do you need the ability to reposition or maneuver the table?
  • Orientation. Do you work standing up, or sitting down?
7. Pros & Cons versus other engineering capture methods
Pro's:
  • Portable options available
  • Commercial options available
  • Multi-purpose: doubles as a standard work-bench
  • All steel construction
  • Easy filter access: reduces maintenance time
  • Multiple filter options


Con's
  • Extraction is restricted to the bench surface
  • Portability of the unit determines the range of extraction
8. Preventing the spread of airborne fumes and chemicals
Industrial workers are exposed to a variety of health hazards every day. As a result, these workers risk the possibility of becoming sick, ill, and disabled for life. According to a WHO estimate (WHO, 2000), unintentional poisonings led to 300 000 deaths in the year 2000.

It's our mission to diminish that figure, but it only works if the correct equipment is used, and configured correctly. Our team works to make the logistics of those questions as straightforward and coherent as possible, and as such, will work with you to provide you with the best extraction system that fits your worker's needs. From accessibility and usability to reliability and longevity.

You can read more about the risks and preventions of fume extraction below:

OSHA
WHO
9. Effectiveness versus dilution ventilation
Dilution ventilation is designed with more of a commercial aspect in mind. As oppose to local exhaust ventilation, how dilution ventilation extracts contaminants is by diluting them with fresh air, which requires the contaminants to be airborne before being removed from the building. This means that all airborne contaminants ultimately spread throughout the building until being pushed through the ventilation exhaust system.

Local exhaust ventilation on the other hand captures contaminants at or near the source of the process. This eliminates the possibility of the contaminant becoming airborne in the first place. Eliminating the risk of airborne contaminant means that a buildings HVAC system does not have to filter industrial contaminants, which dilution ventilation is not designed to do. Some industrial contaminants are highly abrasive and corrosive. Rather than investing in the maintenance costs of the building multiple times, invest in the engineering control solution designed to deal with it.

To read up more about the benefits of local exhaust ventilation versus dilution ventilation, refer to these links:
CCOHS
Use of local exhaust and dilution ventilation
10. Maintenance Costs
Our downdraft tables are all built using only mild and stainless steel, and finished in a very durable polyurethane powder coating, powered by a direct drive electric motor. We follow these requirements to ensure long life and minimal maintenance costs.

Filters:
We offer a selection of several filters, each designed for different workloads. Depending on contaminant, hours of use, and hazards associated with any given contaminant, we have a filter that'll work for your needs. This way you don't need to worry about filters clogging prematurely, which avoids premature failure.

Motors: We use a direct drive motor on all of our extraction systems. Without the use of belts or pulleys in the driveline of the motor, associated maintenance costs are substantially lower, and allow you to get the most use out of your system without service intervals.
05-001
EZ Bench - Downdraft tables
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Easy Bench – An 800 CFM (500 CFM with HEPA or AD Module) downdraft table designed for use while sitting. Standard desk height with maximum leg room for optimized comfort and concentration.

Simple Source Capture.

Removing dust, fumes, and odors, the EZ Bench makes for a cleaner, healthier work environment. Ideal for improved productivity for close, fine hand work.

Easy Filter Access. Standard panels slide in and out from the front, with easy-seal magnetic covers.

Available with:
  • Washable and/or disposable filters.
  • After Filter for Absorption Media
  • Variable Frequency Drives
  • Table Height Options
  • Filter Options
  • Table Height Options
  • Caster Options
Attachments
001 - Equipment Specification and Dimension Drawings:
002 - Brochures:
05-003
DTH800 - Downdraft Table
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DTH800 - A 800 CFM (150 FPM downdraft velocity) downdraft table designed with a self-cleaning filter system, Integrated fan (TEFC direct drive class II motor), and external dust tray.

Draws dust, fumes, and odors away from the workers’ breathing zone without hindering the workers' movement.

Standard panel unscrews from side, for easy filtration access.

Available with:
  • Filter Options
  • Hood Options
  • Localized Enclosures and Shields
  • Fan/Motor Upgrades or Options
  • Silencer Option
  • Preventative Maintenance Pressure Gauges
  • VFD Options
  • Fan, Light & Other Electrical Accessories
Attachments
001 - Equipment Specification and Dimension Drawings:
002 - Brochures:
004 - Product Videos:
05-004
DTH1700 - Downdraft Table
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DTH-1700 - A self-contained Downdraft table that comes with an integrated Fan and filtration system.

Features a work surface of 24" D X 48" W with 18" tall (removable) side & back shields. Max flow rate of 1700 CFM with 208 FPM downdraft velocity.

Draws contaminants away from workers’ breathing zone without hindering movement.

Its large work area is easily utilized in a range of applications.

Its use of (2) CLEAN-2 cartridge filters and the manual VIBRA-PULSE cleaning system makes this ideal for welding and other light dust/smoke applications.
Available with:
  • Filter Options
  • Extraction Arms
  • Localized Enclosures and Shields
  • Fan/Motor Upgrades or Options
  • Silencer Option
  • Preventative Maintenance Pressure Gauges
  • VFD Options
  • Fan, Light & Other Electrical Accessories
Attachments
001 - Equipment Specification and Dimension Drawings:
002 - Brochures:
004 - Product Videos:
05-005
DT3000V2 - Downdraft Table
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DT3000V2 - A self-contained Downdraft table that comes with an integrated 3HP or 5HP energy-saving blower, high-efficiency cartridge filters, and a self-cleaning system. Max flow rate of between 3000 and 4500 CFM

Draws contaminants away from workers’ breathing zone without hindering movement.

It uses (6) CLEAN-2 ULTRA high-efficiency cartridge filters (150 SQ. FT. each / 900 SQ. FT. total)

The VIBRA-PULSE filter cleaning system allows the filters to be cleaned on the spot.

Available with:
  • Filter Options
  • Localized Enclosures and Shields
  • Silencer Option
  • VFD Options
  • Fan/Motor Upgrades or Options
Attachments
001 - Equipment Specification and Dimension Drawings:
002 - Brochures:
003 - Client Installations - Case Studies with Photos:
004 - Product Videos:
05-006
ALH1 - Downdraft Table
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ALH1 - A self-contained Downdraft table that meets NFPA 651 standard for processing and finishing aluminum With a max flow rate of 800 CFM to 1,700 CFM

Features a work surface that draws contaminants away from workers' breathing zone without hindering the worker's movement.

The table offers a Direct-Drive Blower, Non-electrostatic Operation, an Ultra-Seal® Filter Mounting, Optional Casters and an Ergonomic Cabinet. The electrical also meets the standards of NFPA Division II with group-E for aluminum dust.

Available with:
  • Filter Options
  • Localized Enclosures and Shields
  • Silencer Option
  • VFD Options
  • Fan/Motor Upgrades or Options
  • Preventative Maintenance Pressure Gauges
Attachments
001 - Equipment Specification and Dimension Drawings:
002 - Brochures:
003 - Client Installations - Case Studies with Photos:
004 - Product Videos:
05-008
AL6 - Downdraft Table
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AL6 - A heavy-duty downdraft table that allows for a maximum, precise and energy-efficient capture of aluminum contaminants (among others) at the source. With a max flow rate of 3000 CFM with a 155 FPM downdraft velocity.

Heavy-duty downdraft table to collect aluminum dust with its 42"D x 66"W work surface and includes an 18" tall aluminum side and back shields.

Unit includes: Filtration efficiency of 99% @ 1 micron,, front door for easy access to filters, and a preventative Pressure Gauge for monitoring status of the filter, all backed by the ULTRACLEAN-PLUS™ cartridge filters (150 sq. ft. per media)

Available with:
  • Localized Enclosures and Shields
  • Silencer Option
  • VFD Options
  • Preventative Maintenance Pressure Gauges
Attachments
001 - Equipment Specification and Dimension Drawings:
002 - Brochures:
05-011
DT-23 - Downdraft Table
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DT23 - A Non-Powered Down Draft table complete with an integrated collection area and 2' X 3' work surface.

Draws contaminants away from workers’ breathing zone without hindering movement. This unit is ideal for collecting smoke, mist dust and fumes where integrated fans and filters are not appropriate nor convenient.

Available with:
  • Fan, Light & Other Electrical Accessories
  • VFD Options
  • Preventative Maintenance Pressure Gauges
Attachments
001 - Equipment Specification and Dimension Drawings:
001a - How to Install (How to install local exhaust system, Isometric and Exploded Views):
002 - Brochures:
004 - Product Videos:
007 - Written Specifications:
05-012
DT-35 - Downdraft Table
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DT-35 - A Non-Powered Down Draft table complete with an integrated collection area and 3' X 5' work surface.

Draws contaminants away from workers’ breathing zone without hindering movement. This unit is ideal for collecting smoke, mist, dust, and fumes, where integrated fans and filters are not appropriate nor convenient.

Available with:
  • Fan, Light & Other Electrical Accessories
  • VFD Options
  • Preventative Maintenance Pressure Gauges
Attachments
001 - Equipment Specification and Dimension Drawings:
001a - How to Install (How to install local exhaust system, Isometric and Exploded Views):
002 - Brochures:
003 - Client Installations - Case Studies with Photos:
004 - Product Videos:
05-014
Super/Maxi-Mesa - Downdraft Table
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Maxi-Mesa - A modern combined Backdraft and Downdraft Table with a built-in regulating Damper. With a max flow rate of 1180 CFM to 1770 CFM

Maxi-Mesa is suitable for welding and heavier grinding. It extracts the contaminants backwards and downwards. Maxi-Mesa can be used in many applications.

Unit includes:
  • Unique regulating damper: Maxi-Mesa is equipped with a regulating damper which makes it possible to adjust the width of the vertical openings of the backdraft panel. You can quickly adjust the total air volume between backdraft and downdraft with a handle on the front.
  • Extraction Arm: The Maxi-Mesa can be equipped with a Flexi 1.5m extraction arm for heavy welding. Thanks to the unique regulating damper, the total air volume can be divided between backdraft, downdraft and extraction arm.
Available with:
  • VFD Options
  • Preventative Maintenance Pressure Gauges
Attachments
001 - Equipment Specification and Dimension Drawings:
05-015
Sledgehammer - Downdraft Table
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Sledgehammer © - A series of downdraft tables designed to be a dual-purpose workstation and extraction solution.

These tables draw contaminants from the source away from workers’ breathing zone without hindering movement. This unit features a max flow rate of 1200 CFM

Heavy-duty Downdraft table that provides the most durable ¼” steel plate work surface (36” X 24”) on the market.
The Sledgehammer © is equipped with Jet-Pulse Cleaning that allows simple cleaning of the filter, which reduces filter costs dramatically*.

Available with:
  • VFD Options
  • Preventative Maintenance Pressure Gauges