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Standard
Construction Features
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Fan Shaft - Is 1-inch minimum in diameter and is
precisely sized, ground, and polished so the first
critical speed is at least 25% over the maximum
operating speed, which results in longer fan life.
Bearings - Lubricatable cast pillow block and are
air handling quality extended life L10 > 100,000
hours (L50 average life > 500,000 hours)
True Vibration Isolation - Lowers sound levels
and reduces vibration, which increases the fans
life since true vibration has no steel to steel
contact.
Clean Out Port - Allows the outside of the wheel
to be cleaned through a four-inch diameter
removable plug in the windband.
Non-Stick Coated Steel Wheel - Heavy
weight steel wheel with a dry lubricate
coating eliminates imbalance in heavy grease
applications. The steel wheel is a backward-
inclined, non-overloading centrifugal type.
Drain Trough - All grease and water is collected
at one-point for easy disposal.
Curb Cap with Mounting Holes - Prepunched
mounting holes in the steel curb cap to ensure
correct attachment to the roof.
Hinged Curb Cap with Cables - Allows entire fan
to tilt away for access to wheel and ductwork
for inspection and cleaning. Shipped for field
assembly.
Leakproof Construction - One-piece fully welded
windband to curb cap. Assures no grease will
leak onto roof through the fan’s seams.
Drive Assembly - Dual belts, pulleys, and keys are
oversized 150% of driven horsepower. Machined
cast steel pulleys are adjustable for final system
balancing. Belts are static free and oil resistant.
Motor Cover - Is easily removed for access to the
steel motor compartment and drive assembly.
Powder Coated - Unit is constructed of a minimum
of 16 gauge galvaneal steel. Entire unit is powder
coated with a chemical resistant Permatector
finish.
Motor - Carefully matched to the fan load and is
mounted out of air stream.
Windband - Unique spun from galvaneal steel
achieves superior strength & consistent material
thickness.
Nema-3R Disconnect Switch Mounted & Wired -
Motor and switch are prewired to specified voltage.
Motor Cooling Tube - Maximum motor life is
achieved through positive motor cooling with fresh
outside air being continuously drawn through the
large breather tube directly over the motor.
Name Plate - Exact model and serial identification
on a permanent stamped aluminum plate.
Heat Baffle - Extends motor life by reducing the
amount of heat that penetrates through the bottom
of the motor support pan.
Lifting Lugs - Located under motor compartment
for ease of lifting unit during installation.
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