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London
Falls TM DownDraft
The APCCo delivers the reliable Air Pollution Control equipment for the
industrial finishing marketplace, including paint, powder, plating, polishing, anodizing, e-coating, UV and infrared curing,
along with waterborne and conventional liquid and powder coatings.
The
APCCo focuses on advances in technology, new products and applications for all substrates, including metal, plastics,
wood, composites, alloys and ceramics as well as more conventional ferrous substrates.
The London Falls ™ type DownDraft (LF/DD™) versus the Conventional DownDraft represents the obvious space savings and huge DIFFERENCE in
type and size of the systems.
LF/DD™ is a simple and uniquely engineered space saving structure, which solves
the crucial existing problem of the confined sludge collecting spaces: it allows an easy, and at any time, access for
sludge removal.
LF/DD™ is applicable for any types of coatings
Unlike as Conventional DownDrafts the LF/DD™ does not have pumps, piping, sludge
conveyers, eliminators, etc.
The LF/DD™ has: NO maintenance, NO cleaning, NO power requirements, NO chemical use.
The sludge removal does not require the entire water drainage, therefore the water pollution
is prevented.
While the Conventional DownDrafts are deprived of the uniform air suction the uniform airflow is the fundamental nature
of the LF/DDTM.
Using
the true uniform downdraft of the LF/DDTM, the air flows over the top of the vehicle, around the sides, and is
pulled down through the grating, set in a trench/pit. The uniform downdraft air movement creates an environment where no overspray
adheres to the newly finished car.
Unlike as Conventional DownDrafts the LF/DD™ :
- Provides around-the-clock Internal Fire Prevention and Emergency Smoke Exhaust with Flame Suppression,
without any special additional devices.
- Avoids the tendency to become clogged since there are no spaces in the system where paint collects and
restricts the flow of air or water, therefore, NO MAINTENANCE is required.
- Does not have any air or water filters,
- Accommodates all paint spray applications from acrylics to waterborne,
- Applicable for sanding and polishing operation,
- Requires a minimum of skill and training for operation.
- Implements a liquid trap (not a mechanical air locking device) in the Air Turbo-Impactor, preventing
a gas and flame diffusion through the ducts to the atmosphere during non-operating time,
- Provides an exclusive, suited to properties of pollutants, hydraulically automated disposal, based on
the difference between static and dynamic water levels in the system,
- Prevents
water pollution; simple sludge removal avoids drainage of the entire system.
- Converts
floating paint into a pressed foam mat by hydraulically operated floats compactor.
- Allows a paint recovery or a non-hazardous waste disposal.
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The LF/DD™ satisfies
the recomendations:
1. NFPA-33 in A-5-2.1(b) recommends providing
exhaust "at the level below the application point" and by "strategically locating air makeup ducts overhead," and "system
design should provide uniform air movement to sweep vapors to exhaust openings"
2. "All spray areas shall
be provided with mechanical ventilation adequate to remove flammable or combustible vapors, mists, residues, dusts or deposits
to a safe location and confine and control combustible residues so that life and property are not endangered" (NFPA-33, 5-2;
OSHA, 1910.107.d-2).
3. "Exhaust air shall
not create a dead air pockets" (OSHA, 1910.107,d.11).
4. "The safety of life
and property from fire or explosion as a result of spray applications of flammable and combustible paints and finishes varies
depending on the arrangement and operation at a particular installation. The accumulation of overspray residues, many of which
are not only highly combustible but also subject to spontaneous ignition, shall be controlled" (NFPA-33, Appendix A, A-1).
5. "An adequate mechanical ventilation, together with vapors or mists
of flammable or combustible materials should not be underestimated, nor should they be viewed with such concern as to assume
they cannot be controlled by proper engineering." (NFPA-33, Appendix A, A-5).
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