Clean Room Systems & Fan Filters by AIRFLOTEK 2150 Northmont Parkway - Suite H - Duluth, GA. 30096 Toll Free: 800-581-8524

Chemical Filters
 
  Replaceable Terminal Ducted Modules
Our ceiling replaceable TDM features robust, leak-free construction, replaceable HEPA and ULPA filters, and rapid serviceability. It is an innovative, value-added version of the traditional ducted-supply HEPA/ULPA filter housing. This innovation epitomizes the ultimate in protection against bypass leakage. Constructed of high-strength anodized extruded aluminum and stainless steel components, the unit is ideal for a wide range of cleanroom and "clean-space" applications.

TDMs are available in three standard sizes for installation in inverted T-bar grid systems. The unit eliminates problems associated with many competitive models (i.e., includes a downstream filter seal to eliminate dead space, extruded aluminum construction to eliminate the warping and contamination often caused by welding, heavy-duty butterfly damper control to prevent damper "lock-up", and access to unit controls through the perforated grille greatly minimizing the potential for damage during filter replacement and validation).

The unit accommodates a wide range of HEPA and ULPA filters. The filter product line features advanced mini-pleat construction providing large media surface area and optimal media flow characteristics for low pressure drop and extended service life.

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  Applications
The Ceiling Replaceable TDM is ideal for applications requiring frequent filter performance evaluations and routine maintenance procedures found in pharmaceutical and biotechnology cleanrooms. Fluid seal technology allows for easy filter removal and replacement without the worry of bypass leakage. Additionally, since all access ports and controls can be operated without removal of the perforated aluminum grille, the potential for filter damage by maintenance or validation personnel is virtually eliminated.

All TDMs are manufactured and tested under "clean" conditions, making them ideal for critical cleanroom applications.

Features and Advantages

  • Rugged, leak-free construction resulting from the use of extruded aluminum profiles (0.110" thick walls). Extruded anodized aluminum insures high strength while minimizing module weight for ease of installation.
  • Fluid seal technology that eliminates the potential for bypass leakage common to gasket seal units (a soft yet rugged elastomeric gel provides a tight seal while allowing easy filter insertion and removal from the filter housing. The material exhibits self-healing and low out-gassing properties).
  • Heavy-duty butterfly damper and damper control provides continuous adjustment under high airflow conditions. A fixed air distribution disc insures uniform airflow over the entire filter surface. Each standard housing features a 10" or 12" round duct connection.
  • Access to DOP (or alternate aerosol) injection system, static pressure measurement ports, and damper control mechanism without removing the protective face grille.
  • Downstream filter seal eliminating the dead space common to many competitive models.

Available Options:

  • Maximum effective filter face area for low pressure drop and uniform airflow distribution (~7.5% greater filter face area than competitive models).
  • Flush-mounted 16 gauge (0.051") perforated anodized aluminum grille (40% open area) that affords protection and uniform air distribution.
  • Each module is individually leak tested prior to shipment.
  • Modules can be used in the horizontal or vertical position. Filter spacers may be required for vertical position
  • Seismic restraint tabs are standard. A flush mounted 18-gauge (0.048") Type 304 stainless steel grille can be supplied upon request. The grille has 40% open area for low resistance and uniform air flow.
  • Aluminum alloy mounting pads are available for alternate suspension / mounting methods. The pads are mounted flat on the top inside corners of the housing.
  • A stainless steel perimeter trim is available for units mounted in plaster / gypsum wallboard. The trim provides for a clean, finished appearance.
  • The TDM can be purchased with an optional white epoxy powder-coat paint finish.
  • An advanced aerosol distribution system is available to allow for consistent filter leak testing in accordance with the Institute of Environmental Sciences IES-RP-CG-001-86 (HEPA Filters). The connection is a 3/8"- diameter riser extension and plug.
  • Two-inch thick fiberglass insulation with an aluminum-foil backing is available for applications requiring protection against condensation and/or heat loss. Insulation covers only the top of the housing unless otherwise specified by the customer.
  • A side inlet housing is available upon request. Overall module height is increased to 24".

 

At Right:
  1. Aerosol injection ring system and fixed air distribution disc
  2. Aerosol injection ring inlet
  3. Damper control mechanism and static pressure port

Disposable Terminal Ducted Modules