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#05 - Down Draft Tables


Down Draft Tables. 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


Some important points to consider when purchasing:

  • What is the velocity or the air required to pull the fumes and dust downward into the table (Capture Velocity)? (Add up the CFM for all of the inlets that will run at once)
  • What is 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?


    Here are some general design velocities when using "CAPTURE" Hoods:

    Welding/Down Draft:
  • Capture Velocity 100 FPM
  • Transport Velocity 3000 FPM
  • Minimum Face Velocity 150 FPM

    Grinding/Down Draft:
  • Capture Velocity 200 FPM
  • Transport Velocity 4000 FPM
  • Minimum Face Velocity 300 FPM


    For more info, please see the products and associated documentation listed below.



  • (05-01) EZ Bench - Light dusts - Washable and/or disposable filters - 36''W X 24''D (800 CFM)
    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.
      

     001 - Spec Drawings: 
       ·  (05-01) Easy Bench - SD.pdf
     002 - Brochures: 
       ·  (05-01) Easy Bench - BR.pdf
    (05-02) LEV Down Draft Tables c/w Panel Filters (size/flow to suit)
    The LEV Tables offer large table area’s that accommodate a variety of different sized parts/equipment. These tables increase employee safety and comfort levels by removing pollutants at source. The Pre-engineered table draws polluted air away from operators breathing area and returns filtered air to the facility.

    Tables come complete with a 12” table overhang that gives employees the option to stand or sit.

    A variety of high efficiency filters are available depending on the contaminant you are dealing with.

    An Excellent solution for airborne contaminants generated on or at the surface of a table and with very little directional velocity.
      

    (05-03) DTH800 - Heavy dusts & smoke - Self cleaning filter system built in - 24''D X 32’’W (800 CFM)
    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.
      

     001 - Spec Drawings: 
       ·  (05-03) DTH-800 - SD.pdf
     002 - Brochures: 
       ·  (05-03) DTH-800 - BR.pdf
     003 - Case Studies: 
       ·  (05-03-01) DTHt-800 - dust-smoke collection - tier 1 automotive parts manufacturer - cs.pdf
     004 - Videos: 
       ·  (05-02) DTH-800.wmv
    (05-04) DTH1700 - Heavy dusts & smoke - Self cleaning filter system built in - 24''D X 48’’W (1,700 CFM)
    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.
      

     001 - Spec Drawings: 
       ·  (05-04) DTH-1700 - SD.pdf
     002 - Brochures: 
       ·  (05-04) DTH-1700 - BR.pdf
     003 - Case Studies: 
       ·  (05-04-01) DTH-1700 - Overspray collection - Grenville Casting - cs.pdf
       ·  (05-04-02) DTH-1700 - Deburring - velan valve - vcs.pdf
     004 - Videos: 
       ·  (05-03) DTH-1700.wmv
    (05-05) DT3000V2 - Heavy dusts & smoke - Self cleaning filter system built in - 42''D X 66’’W (3,000 CFM)
    The DT3000 is a completely self-contained pre-engineered Downdraft table. Comes complete with an integrated 3HP energy saving blower, high efficiency cartridge filters and automatic self-cleaning system, in addition to its 66" X 42" work surface at 33" height. The DT3000 draws contaminants away from workers’ breathing zone without hindering movement; large work area meets range of applications. Utilizing (6) CLEAN-2 cartridge filters (150 sq. ft. of media each) and the manual VIBRA-PULSE filter cleaning system and a powerful motor generating 155 FPM and 3000 CFM, this solution is ideal for welding and light dust/smoke applications.
      

     001 - Spec Drawings: 
       ·  (05-05) DT3000V2 - SD.pdf
     002 - Brochures: 
       ·  (05-05) DT-3000V2 - BR.pdf
     003 - Case Studies: 
       ·  (05-04-01) DT - 3000 - Welding & Grinding - F&P Manufacturing - cs.pdf
       ·  (05-04-02) DT-3000 - Grinding and deburring - Lynch Fluid - cs.pdf
     004 - Videos: 
       ·  (05-04) DT-3000.wmv
    (05-06) ALH1 & 2 Aluminum Dust NFPA - 24''D X 32’’W (800 CFM); 24''D X 48’’W (1,700 CFM)
    FUNCTION:
    800 CFM (150 FPM downdraft velocity) portable downdraft table to collect aluminum dust. Ideal solution for aluminum sanding and grinding for NFPA compliance. Electrical meets NFPA Division II, group-E for aluminum dust.
      

     001 - Spec Drawings: 
       ·  (05-06) ALH1 - SD.pdf
     002 - Brochures: 
       ·  (05-06) ALH1 - BR.pdf
     003 - Case Studies: 
       ·  (05-06-01) ALH1 & 2 - aluminum dust collection - Boeing - cs.pdf
     004 - Videos: 
       ·  (05-05) ALH-1.wmv
    (05-08) AL6 Aluminum Dust NFPA - 42''D X 66''W (+ 3,000 CFM)
    3000 CFM heavy duty downdraft table to collect aluminum dust with its 42"D x 66"W work surface at a height of 33". This unit boasts 155 fpm downdraft velocity and includes 18" tall aluminum side and back shields. Self-contained pre-engineered downdraft table to allow for maximum, precise and energy efficient capture. Unit includes: Filtration efficiency of 99% @ 1 micron, front door for easy access to filters, and a preventative Pressure Gauge to be able to maintain and monitor the filters status, all backed by the ULTRACLEAN-PLUS™ cartridge filters (150 sq. ft. of media each)
      

     001 - Spec Drawings: 
       ·  (05-08) AL6 - SD.pdf
     002 - Brochures: 
       ·  (05-08) AL6 - BR.pdf
    (05-09) F1-DHYD1 & 2 Wet Tables - Explosive Dust - Table qty, sizes & flow to suit
    The Filter 1 Hydrotron Downdraft Table is a self-contained workstation with its own water dust collection system, excellent for "cell manufacturing." It features easy installation and comes ready to run. The workstation is available with a single work surface or with two work surfaces, one on each side.

    The Hydrotron gets the dust immediately wetted, reducing the risk of fire in ductwork and meets OSHA and NFPA regulations for dust collectors located inside the building. The standard unit includes a fiberglass grated work surface, a Regain Air Curtain in front to prevent dust from escaping the work zone, and a clear inspection door.
      

     001 - Spec Drawings: 
       ·  (05-09) DHYD1 series - SD.pdf
     002 - Brochures: 
       ·  (05-09) DHYD1 series - BR.pdf
     003 - Case Studies: 
       ·  (05-09-01) DHYD1 Hydrotron-Titanium grinding-MECACHROME - vcs.pdf
    (05-10) F1-DHYD2 (Hydrotron w/ 2 Downdraft Tables - size/flow to suit)
    The Hydrotron Downdraft Table is a self-contained workstation with its own water dust collection system, excellent for "cell manufacturing." It features easy installation and comes ready to run. The workstation is available with a single work surface or with two work surfaces, one on each side.

    The Hydrotron gets the dust immediately wetted, reducing the risk of fire in ductwork and meets OSHA and NFPA regulations for dust collectors located inside the building. The standard unit includes a fiberglass grated work surface, a Regain Air Curtain in front to prevent dust from escaping the work zone, and a clear inspection door.
      

     001 - Spec Drawings: 
       ·  (05-10) DHYD2 series - SD.pdf
     002 - Brochures: 
       ·  (05-10) DHYD2 series - BR.pdf
    (05-11) DT-23 General Purpose - 24''D x 36''W (flow to suit)
    Non-Powered Down Draft table complete with integrated collection area and 2' X 3' work surface. Draws contaminants away from workers’ breathing zone without hindering movement.
      

     001 - Spec Drawings: 
       ·  (05-11) DT-23 - SD.pdf
     002 - Brochures: 
       ·  (05-11) DT-23 - BR.pdf
     004 - Videos: 
       ·  (06-01) DT23.wmv
    (05-12) DT-35 (60''W x 36''D – flow to suit)
    Non-Powered Down Draft table complete with integrated collection area and 3' X 5' work surface. Draws contaminants away from workers’ breathing zone without hindering movement.
      

     001 - Spec Drawings: 
       ·  (05-12) DT-35 - SD.pdf
     002 - Brochures: 
       ·  (05-12) DT-35 - BR.pdf
     003 - Case Studies: 
       ·  (05-12-01) DT-23 - Aluminum finishing - Norenco - cs.pdf
     004 - Videos: 
       ·  (06-02) DT35.wmv
    (05-15) 'Sledgehammer' Series Downdraft Tables
    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, light gluing and painting, plasma cutting, sampling, batching, weighing, soldering, and finishing processes ( i.e. buffing and polishing).

    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).

    * Some applications such as Vapour Absorbing Applications may require disposable filters and/or filtration media.