Specification Sheet

308
Fan
Size
A
Sq
B C D E F
Damper
O.D. Sq
Flange
42 48 2 7 1/2 1 1/4 24 28 46 1/2
48 54 2 7 1/2 1 1/4 24 28 52 1/2
54 60 2 7 1/2 1 1/4 24 28 58 1/2
60 66 2 7 1/2 1 1/4 24 28 64 1/2
72 80 2 8 1 1/4 24 28 78 1/2
Dimensions shown in inches.
MODEL L3 - CONSTRUCTION LEVEL 3
Application
Models L3E (exhaust) and L3S (supply) are high capacity wall
mounted belt driven propeller fans rated from 35,000 to 85,000 and to
1.0" w.g. static pressure. Their primary application is the exhaust of
large volumes of air at relatively moderate static pressure from com-
mercial, industrial and agricultural buildings such as manufacturing
and assembly plants, warehouses, foundries, mills, boiler rooms and
equipment rooms.
Wall mounting provides an easy and economical installation. Belt driven
fans provide large volumes of air at low fan speed and low noise levels
and afford quick, easy performance adjustments. All required accessories
are available with Model L.
See Models LC and L - level 2 construction, for lower static pressures
and lighter duty requirements which are generally more economical.
Construction/Specication Checklist
Belt Drive, Wall Exhaust (or Supply) Propeller Fan shall be provided
as follows:
CERTIFICATIONS: Fans shall be AMCA Licensed for air and sound
performance. Fans shall be UL and CUL 705 listed for electrical safety
and reliability (optional).
PANEL ASSEMBLY: Panels shall be heavy-gauge G-90 galvanized
(optional aluminum) with spun one piece venturi. Motor and bearing
plate shall be a minimum of 10 gauge G90 galvanized steel structurally
secured to minimum 1.25 inch schedule 40 galvanized steel pipe by
means of 12 gauge galvanized steel pipe brackets. Panel end support
frame assembly shall be of welded, not bolted, construction with pre-
punched mounting holes for easy installation.
PROPELLER: Propellers shall be six-bladed, die-formed, minimum 16
gauge, G90 galvanized steel with double 16 gauge laminations bolted
to a welded, structural steel hub plate and keyed to the fan shaft. Fan
shaft shall be precision turned, ground and polished steel. Props shall
be statically balanced.
DRIVES: All sheaves shall be sized to a minimum 150% of drive
horsepower, machined cast iron adjustable pitch through 3 horsepower,
keyed to both the motor and fan shaft. Fan shaft shall be precision
turned, ground and polished steel. Belts shall be non-static oil and heat
resistant V-belts.
BEARINGS: All bearing shall be self-aligning cast iron pillow block type
with relube tting and of the air handling style. Bearing design shall be
for a minimum of L-50 200,000 hour average life.
MOTORS: Permanently sealed ball bearing type furnished to the
specied voltage, phase and enclosure. All motors shall be mounted
and factory run tested.
Fan
Size
Material (Ga. or inches th.)
Max Shaft
Diameter
(in.)
Max
Motor
Frame
Size
Avg.
Weight
(lbs.)
Fan
Panel
Drive
Frame
Motor &
Bearing
Supports
Propeller
Spider Blade
Steel Steel Alum
42 16 10 10 3/8 16 0.080 1 7/16 213T 260
48 16 10 10 3/8 16 0.080 1 7/16 215T 330
54 14 10 10 3/8 16 0.080 2 3/16 256T 500
60 14 10 10 3/8 16 0.080 2 3/16 256T 530
72 12 10 10 3/8 16 0.080 2 3/16 256T 600
R
®
AIR
MOVEMENT
AND CONTROL
ASSOCIATION
INTERNATIONAL, INC.
AIR
PERFORMANCE
SOUND
and
Standard 705
(Optional)
DIMENSIONS
Motor Service Factor
Motor service factors are utilized in some performance selections shown. This is a safe and common industry practice that provides more per-
formance for the investment. BHP is shown at the maximum catalog performance point. BHP at all other static pressures listed is less than that
shown, in most cases substantially less. Because the motors are in the air stream there are no negative effects on motor life. Explosion proof
and 2 speed motor applications are recommended at or below their nominal BHP levels. If desired, pick the next higher horsepower to eliminate
this service factor usage. Refer to the Optisizer Fan Selection Program for actual BHP at any performance point.
2 year fan housing warranty, 1 year motor warranty
MODELS LCE/LCS, L2E/L2S, L3E/L3S
BELT DRIVE SIDEWALL PROPELLER FANS