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#06 - Back & Side Draft Systems


Back and Side Draft Tables are similar to Down-Draft Tables. “Back Draft” and “Cross Draft” are ideal solutions when extraction methods such as self-supporting extraction arms and other such systems prove to be inappropriate for the application.The contaminated air is drawn in from the back or side panels of the work area.

These units come with or without filtration systems and can also be combined to create complete enclosures for whatever the application might be


Some important points to consider when purchasing:

  • What is the velocity or the air required to pull the fumes and dust horizontally into the table? (Capture Velocity: Add up the CFM for all of the inlets that will run at once)
  • What velocity at the Table surface is required to achieve the appropriate Capture Velocity? (Face velocity)
  • Do I have enough filter media in the collector? (Air to cloth ratio)
  • 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/Back & Side Draft:
  • Capture Velocity 100 FPM
  • Transport Velocity 3000 FPM
  • Minimun Face Velocity 1500 FPM

    Grinding/Back & Side Draft:
  • Capture Velocity 200 FPM
  • Transport Velocity 4000 FPM
  • Minimum Face Velocity 3000 FPM


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



  • (06-01) F1-BFS - Down/Back draft - Dust - Self cleaning filter system built in - Table sizes & flow to suit
    The BENCHTRON Workstation integrates downdraft/backdraft work surfaces with a self-cleaning dust collector. The collection system removes dust, fumes, and smoke from sanding, grinding, buffing, or welding of metals, composites, fiberglass, plastics, or wood. The BENCHTRON meets OSHA requirements for respirable dust down to .05MG/M3, with adjustable suction velocities of 150 to 800 FPM in the "working zone." High efficiency filters remove 99.9% of all particles 1/2 micron and larger. The unit
      

     001 - Spec Drawings: 
       ·  (06-01) BFS Series - SD.pdf
     002 - Brochures: 
       ·  (06-01) BFS Series - BR.pdf
     004 - Videos: 
       ·  (06-01) Benchtron - VD.wmv
    (06-02) F1-BFD Benchtron (size/flow to suit)
    BFD Filter systems
      

     001 - Spec Drawings: 
       ·  62618(Benchtron BFD6-8-7.5F-SALES)-Layout1.pdf
       ·  62619(Benchtron BFD6-8-7,5F-HEPA)-Layout1.pdf
       ·  ALL Benchtron BFDs Layout1.pdf
     002 - Brochures: 
       ·  Benchtron.pdf
    (06-03) Walltron Modules (size/flow to suit)
    f
      

    (06-04) Panel Filter Power Booth Modules (size/flow to suit)
    5500 CFM free standing Panel filter collector packed into a 2' x 4' footprint is a complete dust collection system, standard with (12) MERV11 24x24x6 filters (42 sq. ft. each).
    It can be used as stand alone unit or as part of an expandable dust control booth.
      

    (06-05) PB Back Draft Modules - Dust - Self cleaning filter system built in - 4’ X 4’ BD Hood (5,000 CFM/module)
    A free standing Dust Control Booth with 6 Clean 2® cartridge filters, dual dust drawers, slotted inlet hood, 5 HP 208-230/460/575/3/60hz motor with non-sparking AMCA Type B wheel, Vibra-Pulse® cleaning.
      

    (06-06) Back Draft Hoods - General Purpose - 2’X3’ and 3’X5’ (Fan selected separately)
    Back draft hoods for direct exhaust or connection to the "200" or "F" series filters.
      

     001 - Spec Drawings: 
       ·  (06-06) Backdraft Hoods - SD.pdf
     002 - Brochures: 
       ·  (06-06) Backdraft Hoods - BR.pdf