FanAir Company FRP Sound Enclosures.  Made in the USA over 25 Years!  We were the first to design, produce and sell FRP Acoustic Sound Enclosures!  

Industrial Acoustical Sound Enclosures. Designed to attenuate Radiated  Mechanical Noise generated by Fans Blowers, Compressors, Pumps, Turbines and Regenerative Blowers.

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Description:
Rugged Heavy Duty constructed Acoustical Sound Enclosures designed to attenuate mechanical noise generated from Fans, Blowers, Pressure Blowers, Positive Displacement Blowers, Turbines, Multi Stage Centrifugal Blowers, Pumps, Compressors, and Regen Blowers.  FanAir Company produces Sound Enclosures specifically designed to eliminate a wide band of objectionable noise generated from Blowers operating at High Pressures and High Tip Speed.  Blowers generating high decibel levels in the OBC or Octave Band Center Frequency range above 500 Hz are ideal candidates for the FanAir Company line of Acoustic Sound Enclosures.

Applications:
Reduction of mechanical noise in critical areas, including Schools, Universities, Utilities, Equipment Rooms, Basement Utility rooms, Roof Mounted equipment, Waste Water Treatment, Aeration Blowers, Pneumatic conveying systems, Test Chambers, Air supply, Recirculation Air, Engine Room Air Exchange, Shop Ventilation, Plant Ventilation, Garage Ventilation, Enclosure Ventilation, Portable Air Cooling.

 

 

Product Features / Options:

  • Housings constructed in Steel, Aluminum, FRP or PVC construction available.

  • Internally lined with a wide range sound absorption materials.

  • Enclosures furnished ready to install with inlet and discharge penetrations pre-cut to accept duct or pipe.

  • Optional recirculation Fans, Air Conditioners or Supply Fans to remove waste heat or temperature rise within enclosure.

  • Optional Acoustical intake louvers furnished with exhaust fans option.

  • Optional housing split to facilitate quick service access to Blower.

  • Optional Fiberglass Single or Double Doors.

  • Extended lubrication fittings with external Zerk relief fittings standard.

  • Optional inspection doors or Lexan Windows.

  • Optional internal UL listed lighting and light fixtures.

  • Available in 1, 2, 3 or 4 panel baffles, Complete Enclosures or Knock Down enclosures.

  • Special Coatings, Stainless Steel or Aluminum construction is available.

FanAir Model 130 Fiberglass Acoustic Sound Enclosure for Fiberglass Pressure Blower.  Enclosure installed at a Waste Water Treatment Plant in Detroit Michigan. Enclosure reduced Blower Housing Radiated Noise Level of -15 db”A" at 5 Feet. 316 SS Latches provide "Quick Access" to Blower assembly.

FanAir Model 75 Fiberglass Acoustic Sound Enclosure for 36" Fiberglass  Blower.  Enclosure mounted over Force Draft Fan before 2 Stage Vertical Scrubber. This Enclosure was provided with a 2" Wide Flange "Split" Housing  to access Blower. All  sound enclosures are provided with 10 Mills of UV resistant Gel-Coat.

 

 

 

 

Sound Enclosure Sample Specification

GENERAL 1.0

1.      Contractor shall furnish and install 1 each, FRP acoustic sound enclosure for each fan as listed on equipment schedule and contract drawings.

2.      Sound enclosures shall be as manufactured only by companies with a minimum of 5 years manufacturing experience of noise control equipment for fans, fans, pumps and or compressors. 

3.      Sound enclosure manufacturer shall guarantee a minimum of -20 dB”A" transmission loss of noise producing equipment to be silenced, or alternately shall reduce the mechanical noise level generated by the equipment listed on the schedule to a maximum housing radiated db”A" level as specified by the owner or utility.

4.      Sound enclosure manufacturer shall obtain from the fan manufacturer listed on schedule, the sound level ratings based on AMCA test standard 300, the housing radiated noise level and the inlet and discharge noise level ratings.

5.      Sound enclosure manufacturer shall coordinate with the fan manufacturer listed on schedule requirements for cooling, temperature rise and special provisions for Inlet ducting, discharge ducting, appurtenances such as dampers, Flexible duct connections, inlet or discharge silencers, intake filters, vibration isolators, seismic restraints, motors, drives and guards, electrical connections, electrical safety disconnect switches.   The sound enclosure manufacturer shall also make special provisions to allow access to serviceable items such as bearings, lubrication, seals, dampers, belts, motors and access doors.

6.      Sound enclosure manufacturer will provide and place a 10" x 14" warning sign, on each access door, indicating equipment is to be shut down and locked out prior to entry.   

PRODUCT 2.0

1.      The sound enclosure shall be a rigid complete enclosure using only fiberglass reinforced plastic with a minimum shell thickness of 3/16” thick and be lined with acoustical materials as listed below.

2.      Sound adsorbing materials shall be a minimum of 1 1/2" thick, consisting of 1 layer of 1/8” thick perforated chemical resistant vinyl fused to 1 5/8” thick closed cell neoprene acoustic foam.  Internal absorption material shall have a minimum NRC rating 0.94.

3.      Fiberglass shell and Acoustic material shall have a Class I, E-84 flame spread rating of 25 or less when tested in accordance with ASTM E-84.

4.      All surfaces of the Sound Enclosure including Acoustic lining shall be resistant to Hydrogen Sulfide and shall width stand pressure washing and or steam cleaning.

5.      Sound enclosure walls shall be constructed using chopped strand method, and shall be constructed using Fiberglass Reinforced Plastic with a 30% Glass and 70% Resin content.  Resin system used must be Fire Retardant Polyester and without the addition of antimony trioxide.

6.      The sound enclosure shall be provided with a 2” wide perimeter base support integral to the exterior wall.

7.      The sound enclosure shall be vertically split in such a manner to allow one half of the enclosure to be removed for fan inspection or maintenance without disturbing the intake or discharge duct connections.  The enclosure shall be joined by use of quick release latches.

8.      The sound enclosure shall be provided with 3 Each, PVC extended lubrication lines extended to the outside wall of the enclosure terminating to Zerk relief fittings to facilitate lubrication of the bearings and shaft seal.  The Zerk fittings shall be marked with the proper grade of grease and the items lubricated.

9.      The sound enclosure shall be provided with factory pre-cut penetrations to facilitate intake and discharge ductwork or pipe.   The precut penetrations shall be 2 Inches overall larger than the duct or pipe diameter.  Additional fiberglass filler strips shall be provided with insulation to seal air gaps to within ¼” of the ductwork.  The contractor shall caulk in place using silicone material any air gaps between filler strips and the duct or pipe.  

10.  Sound enclosure manufacturer shall make allowances in size and design of enclosure for fan rotation, discharge, dampers, flexible duct connections, inlet boxes, isolation bases and isolators,

11.  Each sound enclosure shall be provided with 1 Each, Aluminum or Fiberglass Exhaust Fan, furnished with an Explosion proof Motor. (Alternately: Fiberglass Reinforced Plastic or Aluminum gravity type ventilator) factory mounted and properly sized accounting for the temperature rise by the equipment contained within the enclosure..  Sound enclosure manufacturer shall coordinate with the fan supplier details relative to fan arrangement, motor location, fan rotation and discharge position for correct selection, design and placement of louvers and exhaust to minimize temperature rise within the acoustic enclosure.

12.  Sound enclosure shall be fitted with a minimum of 1 each fiberglass acoustical intake louver provided with insect screen.

13.  Sound enclosure shall be provided with 1 each, 24” x 24” hinged inspection door.

14.  Sound enclosure manufacturer shall provide certified drawings, sound test data showing transmission loss, Installation, operation and maintenance instructions warranted for a minimum of 1 year.

15.  Sound Enclosures shall be as manufactured by FanAir Company, Orange, California.