42
Specifications
Direct Drive
Direct drive, axial type sidewall fans shall be provided
as follows:
Propellers shall be constructed with fabricated steel,
fabricated aluminum, or cast aluminum blades and
hubs. A standard square key and set screw or tapered
bushing shall lock the propeller to the motor shaft. All
propellers shall be statically and dynamically balanced
to AMCA Standard 204-05.
Motors shall be permanently lubricated, heavy duty type,
carefully matched to the fan load and furnished at the
specified RPM, voltage, phase, and enclosure.
Motor drive frame assemblies and fan panels shall be
galvanized steel or painted steel. Drive frame assemblies
shall be welded wire or formed channels and fan panels
shall have prepunched mounting holes, formed flanges,
and a deep formed inlet venturi. Drive frames and panels
shall be bolted construction or welded construction
(level 2 & 3 fans only).
The axial exhaust or supply fans shall bear the AMCA
Certified Ratings Seals for Sound and Air Performance.
Fans shall be Model S1, S2 and SC3 as manufactured by
Greenheck Fan Corporation, Schofield, Wisconsin, U.S.A.
Belt Drive
Belt driven, axial type sidewall fans shall be provided
as follows:
Propellers shall be constructed with fabricated steel,
fabricated aluminum, or cast aluminum blades and
hubs. Propellers shall be securely attached to fan
shafts. All propellers shall be statically and dynamically
balanced to AMCA Standard 204-05.
Motors shall be permanently lubricated, heavy duty
type, carefully matched to the fan load and furnished at
the specified voltage, phase, and enclosure.
Ground and polished steel fan shafts shall be mounted
in permanently lubricated, sealed ball bearing pillow
blocks and coated with an anti-corrosive coating.
Bearings shall be selected for a minimum L
10
life in
excess of 100,000 hours L
50
average life of 500,000
hours) at maximum cataloged operating speeds.
Drives shall be sized for a minimum of 150% of driven
horsepower. Pulleys shall be of the fully machined cast
iron type, keyed and securely attached to wheel and
motor shafts. Motor sheaves shall be adjustable for
system balancing.
Drive frame and panel assemblies shall be galvanized
steel or painted steel. Drive frames shall be formed
channels and fan panels shall have prepunched
mounting holes, formed flanges, and a deep formed
inlet venturi. Drive frames and panels shall be bolted
construction or welded construction (level 3 fans only).
The axial exhaust or supply fans shall bear the AMCA
Certified Ratings Seal for Sound and Air Performance.
Fans shall be Model SB and SBC as manufactured by
Greenheck Fan Corporation, Schofield, Wisconsin, U.S.A.
Reversible Belt Drive
Belt driven, axial type sidewall fans shall be provided
as follows:
Propellers shall be constructed with cast aluminum
blades and hubs. Propellers shall be securely attached
to fan shafts. All propellers shall be statically and
dynamically balanced to AMCA Standard 204-05.
Motors shall be permanently lubricated, heavy duty
type, carefully matched to the fan load and furnished at
the specified voltage, phase, and enclosure.
Ground and polished steel fan shafts shall be mounted
in permanently lubricated, sealed ball bearing pillow
blocks, and coated with an anti-corrosive coating.
Bearings shall be selected for a minimum L
10
life in
excess of 100,000 hours (L
50
average life of 500,000)
at maximum cataloged operating speeds. Drives shall
be sized for a minimum of 150% of driven horsepower.
Pulleys shall be of the fully machined cast iron type,
keyed and securely attached to wheel and motor shafts.
Motor sheaves shall be adjustable for
system balancing.
Drive frame and panel assemblies shall be galvanized
steel or painted steel. Drive frames shall be formed
channels and fan panels shall have prepunched
mounting holes, formed flanges, and a deep formed
double inlet venturi. Drive frames and panels shall be
bolted construction or welded construction.
The axial exhaust or supply fans shall be tested in
accordance AMCA Standard 301 for Sound and
Air Performance.
Fans shall be Model SBCR as manufactured by
Greenheck Fan Corporation, Schofield, Wisconsin, U.S.A.
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