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The Leader in Clean Air. Guaranteed Solutions.

Automotive Paint Booth Series. The Leader in Clean Air. Guaranteed Solutions. Spray Booth Airflows Overview. Manufacturing Today Manufacturers are looking for a ventilation system that should:. Increase the Quality of their finished Product (no dirt in the paint, no swirls, ect…)

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The Leader in Clean Air. Guaranteed Solutions.

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  1. Automotive Paint Booth Series The Leader in Clean Air. Guaranteed Solutions.

  2. Spray Booth Airflows Overview Manufacturing Today Manufacturers are looking for a ventilation system that should: • Increase the Quality of their finished Product • (no dirt in the paint, no swirls, ect…) • Reliability in fast, easy and convenient service • for their paint finishing system. • Increase Flexibility in their finishing system. 2

  3. Spray Airflows Overview (continued): • One-Stop Source in the Industry. • We Custom Design to Maximize Quality Finishes’. • Give Vista Your Toughest Conditions. • Performance Guarantee. • Solutions for every budget! 3

  4. Equipment Types: Airflow Configurations Style/Applications • Downdraft • Semi-Downdraft • Cross-Flow • Custom Design • Automotive • Woodworking • Industrial 4

  5. DownDraft Paint Booths: 5

  6. Downdraft (Dual Trench) 6

  7. DownDraft Airflow: • Almost always the best “ten on a scale of one to ten” • Short path of overspray to exit • Overspray is pulled away from the painter and the product • Wrap of air movement around product is very efficient at removing overspray and preventing dirt • Easily lends itself to “drive-through” applications, due to the plenums being out of the product path • No “dry overspray” issues • Can often spray multiple colors without “cross-talk” • Provides excellent contact ratio of heated air to product during cure cycles • Typical airflow design is 50 FPM in direction of airflow (length x width x 50) automotive is often 25-35 FPM • Usually requires more CFM, thereby raising cost up front and more fuel on-going • Requires a full overhead plenum, thereby raising cost and requiring additional headroom • Requires an in-ground trench or raised platform 7

  8. Semi-Downdraft(Rear Exhaust Plenum) 8

  9. Semi-Downdraft(Corner Plenums with Outside Bridge Chamber) 9

  10. Semi-DownDraft(Corner Plenums w/Inside Bridge Chamber): 10

  11. Semi-DownDraft (Corner Plenums w/Individual Exhaust Stacks): 11

  12. Semi-DownDraft (sometimes called modified cross-flow): • Often a good alternative to Downdraft “eight on a scale of one to ten” • Good airflow over the product- much better than pressurized crossflow • Provides good contact ratio of heated air to product during cure cycles • Economical to purchase and operate in comparison with Downdraft • Does not require concrete trench or raised platform • Airflow design is 100 FPM in direction of airflow (width x height x 100). This is NFPA and OSHA requirement • Can have slight “dead zones” below supply plenum in very tall booths • Can tend toward “stratification” of heated air in cure cycles in long and/or tall booths • Settling overspray on the product can be a problem that painters need to learn to overcome, especially in long booths. • Overspray “fallout” will become evident in long booths. This may require more maintenance. 12

  13. Side-Downdraft 13

  14. Side DownDraft Airflow: • This type is widely pushed by competitors as a “pit-less downdraft” • A fairly good alternative to downdraft “seven on a scale of one to ten” • Some applications cannot or will not cut the floor for a trench • Provides a relatively short path for overspray to exit • Eliminates dry overspray on product • Easily lends itself to “drive-through” applications, due to the plenums being out of the product path • Overspray is pulled directly toward the painter (“ankle painter”) • Requires as much airflow as downdraft, without the same benefits • Does not provide a “wrap” of airflow around the product • Requires the same headroom as downdraft • Requires additional width (3’-7’additional) • Often requires additional exhaust stacks • Less flexibility for personnel doors, due to side plenums • More costly than a Semi- downdraft due to construction and airflow 14

  15. Cross-Flow (Positive Pressure – Side Plenums):

  16. Cross-Flow: • The least expensive alternative “three or four on a scale of one to ten” • Negative pressure versions are quite popular due to cost savings • Positive pressure; corner plenum versions, especially drive through, are quite in-effective due to the air simply flowing down the sidewalls and missing the product (semi-downdraft is a much better alternative- the air is moving over the product). • Negative pressure; These are generally not a good choice when the prospect is looking for a quality finish- air drawn through the filter doors is seldom as clean as a positive pressure overhead plenum. When door are opened, dirty air is drawn in. • Settling overspray on the product can be a problem that painters need to learn to overcome. • Overspray “fallout” will become evident in long booth. This may require more maintenance. • Positive pressure versions can cost as much or more than a semi-downdraft. 16

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