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Specification
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TYPICAL SPECIFICATIONS

Model:

Description: Fan shall be aluminized and galvanized steel, roof mounted, belt and or direct driven, centrifugal up blast restaurant utility exhaust ventilator.

Application:

centrifugal up blast restaurant utility exhaust ventilators are engineered to discharge grease laden vapors, fumes and other contaminants vertically away from the building. Model is specifically intended for high temperature and heavy grease applications.

Certifications: All models shall be ETL Listed and comply with UL705 (electrical), and ULC-S645 Standards and CSA Std C22.2, No 113. Fan shall bear the AMCA certified ratings seal for sound and air performance.

Housing

The fan shall be constructed of aluminized and galvanized steel. Fan scroll shall be continuously sealed with a listed intumescent to prevent grease leakage. The fan scroll shall be tack welded and have a 2" fully welded drain to prevent grease leakage and blockage of the drain.

Base

The base shall be constructed of galvanized steel for improved rigidity. Bolt patterns shall be provided in the base to allow connection to a pollution control unit.

Wheel

The fan wheel shall be centrifugal backward inclined and non-overloading. Wheels shall be balanced in two planes and done in accordance with AMCA standard 204-96, Balance Quality and Vibration Levels for Fans. The wheel blades shall be aerodynamically designed to minimize turbulence, increase efficiency and reduce noise. The wheel shall be heavy gauge welded aluminum. In the event that balancing weights are required they shall be riveted or welded to the blades or wheel. The wheel inlet shall overlap the fan inlet for maximum performance and efficiency. The wheel shall be firmly attached to the motor shaft with set screws.

Motor & Motor Compartment

Motors shall be heavy duty ball bearing type, mounted out of the airstream and furnished at the specified voltage, phase and enclosure. Motor mounting plate shall be constructed of heavy gauge steel. The motor compartment shall be cooled by outside air drawn through louvers in the motor cover. The motor compartment shall be completely removable to provide unobstructed access to the motor and drives. The motor cover assembly shall have wing bolts to secure the assembly to the housing.

Shaft and Bearings

Shafts shall be precision ground and polished. Heavy duty, per-lubricated bearings shall be selected for a minimum life (L10) life in excess of 200,000 hours of operation at cataloged operating speed. They shall be designed and individually tested specifically for use in air handling applications.

Belts & Drives

Belts shall be oil and heat resistant, non-static type. Drives shall be cast type, precision machined and keyed and secured attached to the fan and motor shafts. Drives shall be sized for a minimum of 150% of the installed motor horsepower. Fan operating speed shall be factory set using adjustable pitch motor pulleys; motors over 2 HP will come standard with double groove pulleys.

Grease Spout

The 2" grease drain is fully welded in the discharge scroll, a removable grease trough is attached to the scroll to collect grease.

Safety Disconnect Switch

A safety disconnect switch shall be standard on all units with open drip proof motors. Switches shall be installed in a NEMA3R enclosure and mounted to exterior of the fan for easy access.

Product: Fan shall be model as manufactured by

 
 
 

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