SERIE 1900PFD SISW

Centrifugal Fan

AIRFOIL – HEAVY-DUTY

BASIC DESCRIPTION

Centrifugal fan with rotor type A, Airfoil, DIRECT-DRIVE, HEAVY-DUTY, high efficiency. Model tested and certified by Chicago Blower Corporation in accordance with the standards AMCA Standard 210 and AMCA Standard 300. Rotors available are designs 1902, 1903 and 1904. Width change percentage of the rotors from 40% to 110%.

APLICATIONS:

Ventilation, exhaust, industrial processes, marine, power plants, steel mills, pollution control systems, etc..

OPERATING CHARACTERISTICS:

Operating Range: Flow rate up to 85,000 m3/h and static pressure up to 1250 mmca.
Mechanical efficiency: Above 80% in the range of maximum yield
Power consumption profile: "LIMIT-LOAD"
Operated fluid: air or gases without excess abrasive particles.
Temperature: Up to 80°C – Standard construction. Above, up to 400 °C – Requires special fittings.

CONSTRUCTION: (INDUSTRIAL HEAVY-DUTY)

● Structure - Profiles of welded carbon steel plates, providing security and robustness to the equipment.
● Housing - High thickness carbon steel plates, welded, with aerodynamic "spiral" shape.
● Rotor - Designed with a minimum safety factor of 1.2 on the maximum speed of the class, consisting of:
   - Center - Carbon steel precision machined, fixed to the shaft with screws and key.
   - Backplate - Carbon steel disc, high thickness, structured, centerly fixed with locked screws.
   - Blades - Carbon steel aerodynamic profile (airfoil) structured with "ribs" according to the constructive class and size, welded to the back plate and the cone of the rotor.
   - Rotor cone - Carbon steel conformed to hyperbolic flow profile.
● Shaft (Arrangement 8) - Carbon steel SAE 1045 precision machined, minimum safety factor of 1.2 on the maximum speed of the constructive class.
● Bearings (Arrangement 8) - Calculated for a minimum life L10 of 40,000 hours.
● Transmission (Arrangement 8) - High-strength elastic sleeve.
● Welding - Electrical in an inert atmosphere with qualified procedure and operators.
● Balancing - All rotating assembly is subjected to rigorous static and dynamic balancing, according to ISO 1940 and ANSI S2.19, grade G = 6.3.

SURFACE TREATMENT

According to the procedure of the standard paint of SOMAX the carbon steel parts are subjected to surface treatment by abrasive blasting grade SA-2, further epoxy based paint with a minimum thickness of 25µ and epoxy finishing paint with a minimum thickness of 25µ . Other materials of construction and other surface treatments can be provided upon request.