Aeration; Floating Brush Rotor Aerator

Mounting S&N's unique rotor on an adjustable floating platform insures optimum operating depth for maximum mixing and oxygen transfer.

• Operates at deeper depths.
• Enables the S&N AIROFLO Aerator to MAXIMIZE both MIXING and OXYGEN TRANSFER in Wastewater Treatment.
• More Oxygen, More Mixing -- Less HP provides 30 to 80% energy savings compared to conventional equipment.
• Available in 20 HP, 15 HP, 10 HP, 7.5 HP and 5 HP models. (3 Phase, Single Phase, Stainless Steel, and Hot Dipped Galvanized)

Features:

Rotor Blades:
• Dual length rotor blades with a spiral design
• 108 rotor blades with 52 @ 13 3/4" long and 56 @ 16 1/4" long
• Main core is 8" diameter structural tubing 10' 6" long
• Overall diameter of the rotor is 36 1/2"
• Drive shaft is 304 SS with 2 7/16" diameter and tail shaft is 304 SS with 2 3/16" diameter
• Drive shaft assembly utilizes a "Bolt-On Shaft" design which entails the shaft being welded to a machined flanged 1/2" x 12" steel plate and supported with four(4) inside gussets for strength
• Tail shaft assembly utilizes a double bulkhead design that passes the shaft through two(2) - 1/2" x 8" steel plates, with four(4) inside gussets for strength
• Hot-dipped galvanized (thickness 7 to 8 mils)

Operation:
• Rotor blades are set at a depth of 7 1/2" for Optimum Oxygen Transfer and Mixing
• Proven field transfer rate of 2.3 lbO2/Hp-hr
• Motor operates at less than 90 percent of full motor load at optimum setting

Motor:
• 230/460, 3-phase, 60 cycle, nominal 1800 rpm (Soft-start, Single-phase is also available)
• USEM electric motor with 1.25 service factor
• Totally enclosed, fan cooled, and rated for severe corrosive-duty
• NEMA Class "F"

Gear Reducer & Drive Assembly:
• Falk AGMA class III gear reducer
• 3-year factory warranty - including bearings and seals
• Lifetime shaft removal guarantee

Motor & Gear Reducer Cover:
• Covers motor and gear reducer to prevent weather and water contamination
• Made from 22 gauge 304 SS
• Hinges for easy O&M access

Special Aramid Belt:
• Double-grooved, banded belt connects motor and gear reducer
• Does not stretch
• Provides for a total "Elastomer" drive assembly

Main Frame:
• Welded 2" x 2" x 1/4" structural angle
• Lift brackets for aerator handling
• Hot-dipped galvanized (thickness is 7 to 8 mils)

Bearings:
• Low Maintenance bearings and bronze wear bushings on both ends of rotor (These are water-lubricated UHMW plastic bearings with unbelievable wear characteristics)

Floatation Tanks:
• 96" length x 22" and 27" diameter aluminum floats (2 per unit)
• 5052 aluminum (0.080 thickness)
• Optional Stainless Steel Tanks Available

Cradle Frame:
• Attaches floatation tanks to main frame
• Provides hinge point to allow adjustments in water depth and amperage
• Hot-dipped galvanized (thickness is 7 to 8 mils)

Adjusting Linkage:
• Changes operating depth of rotor blades
• Levels aerator to anchoring system
• Allows changing of horsepower requirements and amp draw
• Fabricated from 304 SS rod with brass adjusting nuts

Easy Installation:
• AIROFLO units are easily assembled and installed Required
• Assembly Installation
• Attach Float Assembly
• Set Operating Depth
• Anchor In Place
• Connect To Electrical Controls