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Dimensions of Wall or Other Opening for
Mounting Fan. The Coolair fan is designed for all-angle usage and
may be mounted in any position. When face mounted to a wall, the wall
opening should be approximately 3" less than OD. of the fan
frame. If fan frame is to be recessed into the wall, opening should be
1/4" larger than OD. of fan frame.
Air Exhaust or Air Supply Usage. The Coolair fan is designed
primarily for use as a wall exhaust fan. If supply fan usage is
required, it is recommended that the entire fan unit be mounted in a
sheet metal or plywood sleeve and attached to the wall location with
fan position reversed 1800 from the normal wall position. Coolair fans
may be electrically reversed for temporary or emergency use. Fan
will not perform efficiently when electrically reversed.
Pre-Installation Check of Fan. Before installation of fan,
check carefully for shipping damage which may result in blade
misalignment, deformed parts or other damage. After motor has been
mounted, check pulley alignment and belt tension. Before connecting
the power source, check motor nameplate to be sure of correct phase
and voltage and motor voltage connection when motor is dual voltage.
Single phase motors are shipped from factory wired 230 volt. For low
voltage operation see motor manufacturer's instructions on name plate.
Make sure propeller turns freely without striking fan frame or any
foreign object which may interfere with its operation. Note direction
arrow on orifice to make sure propeller is rotating in correct
direction when power is applied.
Motor Mounting and Belt Adjustment. Coolair
fans are shipped in two packages. The fan assembly, motor bracket and
belt comprise one package; the motor and pulley comprise a second
package.
(A) Motor Mounting.
(1) Remove motor bracket from its shipping position on fan frame.
Attach motor bracket to motor (see Figure 1 for correct positioning of
bracket to motor).
(2) Place fan in upright position with bracket mounting holes in
uprights below center of fan.
(3) The motor pulley should be placed on the motor shaft with the set
screw that will secure pulley to motor shaft toward the motor.
(4) Hang motor and bracket from belt by placing motor pulley on belt
and temporarily supporting back of motor as necessary.
(5) Select correct bracket holes so that slots in motor bracket will
allow adjustment up and down.
(6) Fasten motor bracket to uprights with four bolts provided. Make
sure motor base remains level. Do not tighten bolts until belt tension
is adjusted.
(7) Adjust belt tension (see paragraph (C) right) by loosening bolts
slightly and tapping motor bracket up or down as necessary. Check
motor pulley alignment with fan pulley and adjust pulley position on
motor shaft as necessary.
(8) Retighten pulley set screw and motor bracket bolts. IMPORTANT:
Motor bracket bolts must be secured to maintain proper belt
adjustment.
(B) Motor Pulley Alignment and Motor
Pulley Fastening.
(1) On fans supplied with adjustable pitch motor pulley, the pitch
setting made at the factory operates the fan at the proper motor load,
and the set screw(s) holding the adjustable flange has been factory
sealed with red nylon. The nylon sealed set screw(s) does not fasten
the pulley to the motor shaft, these screw(s) should not be loosened.
(2) After the fan and motor pulley are in alignment tighten motor
pulley set screw(s).
For fans using motor with 1/2"
diameter (48 frame) make sure set screw is set centered on motor shaft
flat.
For fans using motor larger than 48 frame the set screw will be set on
the motor shaft key.
NOTE: For fans supplied with
adjustable pitch motor pulley that uses bushing type hub it will be
necessary to open the adjustable flange to tighten set screw onto
shaft key It is important that the factory set position of the
adjustable flange be maintained for proper fan/motor operation. When
opening adjustable flange note factory set position and return
adjustable flange to factory set position after set screw has been
tightened.
(C) Belt Tension
Adjustment.
After 8-10 hours of fan
operation following installation, belt tension should be rechecked and
adjusted if necessary. To check proper belt tension, place a finger
midway between fan pulley and motor pulley and push belt(s) inward
about 1/2" (at approximately 5 lb. force) for proper tension.
Adjustment beyond the slots in the motor bracket may be necessary.
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If so,
remove motor bracket bolts and place in next hole location in
fan uprights. This will allow additional belt adjustment as
necessary. CAUTION: Use of tension adjustment bolts
makes it easy to overtighten belts. When this occurs, belts
will soon fail. Do not overtension the belt. This will cause
premature bearing failure.
NOTE: All local, state and federal codes should be
checked to make sure all wiring, guarding and intended usage
of the fan unit(s) comply with all applicable codes. The
proper type and class of fan and motor should be used for air
being handled such as explosive or other hazardous air
mixtures.
Fan Cleaning and Adjustment. Fan should be cleaned
as necessary to remove accumulated dust, dirt and other
foreign matter which may collect on the blades or other fan
parts. Belt(s) should be inspected and tension adjusted (see
below). Be sure to check for belt misalignment which can
result in excess sive wear and premature failure. If rust or
corrosion is found, the affected area should be thoroughly
cleaned and refinished.
Fan Speed Adjustment. On belt drive models equipped
with adjustable pitch motor pulley, the pitch setting made at
the Factory operates the fan at the maximum safe load for the
motor. Do not close pulley to increase fan speed as this will
overload motor and cause damage to motor or trip-out. Pulley
may be opened to reduce fan speed and thus decrease CFM. If
further information is required contact your American Coolair
Representative.
Belt Replacement and Tensioning.
(a) Belts should be inspected and tension adjusted at
regular intervals. For belt replacement, loosen bolts which
connect shaft to X-brace. Remove old belt and replace new one
by slipping belt over blade tips one at a time. By first
loosening bolts which connect shaft to X-brace, this procedure
is made easier.
Repair Parts.
(1) Belts - Belts are standard V-belts used on industrial
machines and replacements may be obtained through local
industrial supply houses. If more than one belt is used on the
fan, be sure to replace with matched sets. To install belts,
see instructions above for belt replacement.
(b) Blades- If one or more blades on propeller are
damaged, it is recommended that the entire blade
assembly be removed and returned to the Factory for necessary
repair and rebalancing. Detach shaft from X-brace on fan frame
and return the complete propeller, bearing assembly and shaft.
For convenience in shipment, individual blades may be removed
from the fan pulley .
(c) Bearings- Field replacement of bearings is not
recommended. Return entire blade assembly to Factory or
authorized distributor for repairs.
(d) Motor - Motor repairs should be performed
only by an authorized motor repair station. Contact the motor
manufacturer or American Coolair for location of repair
station.
CAUTION: Do not
return damaged or defective parts to American Coolair without
prior authorization. If repairs under warranty are claimed,
see warranty terms in American Coolair catalog or contact the
factory at Jacksonville, Florida. Claims for warranty repairs
to electric motor should be made direct to the motor
manufacturer's authorized repair centers.
WARNING: IF
THESE VENTILATION PRODUCTS ARE USED IN AGRICULTURAL STRUCTURES
TO SUPPORT LIFE WHERE FAILURE OF THE VENTILATION COULD RESULTS
IN LOSS OR INJURY, THE USER SHOULD PROVIDE AN ADEQUATE BACK-UP
VENTILATION SYSTEM AND A FAILURE ALARM SYSTEM. THE USER MUST
ACCEPT THE RISK OF SUCH LOSS OR INJURY FROM FAILURE OF THE
VENTILATION SYSTEM.
WARNING
CAUTION
DO NOT INSTALL
FAN WITH MOVING PARTS WITHIN 8 FEET OF FLOOR OR GRADE LEVEL
WITHOUT A GUARD THAT COMPLIES WITH OSHA REGULATIONS. DO NOT
USE UNLESS ELECTRICAL WIRING COMPLIES WITH ALL APPLICABLE
CODES. DO NOT WIRE WITHOUT PROVIDING FOR A POWER
SOURCE. DISCONNECT AT THE FAN ITSELF. DO NOT SERVICE
EXCEPT BY A QUALIFIED MAINTENANCE TECHNICIAN AND ONLY AFTER
DISCONNECTING THE POWER SOURCE. FAILURE TO OBSERVE THESE
PRECAUTIONS CAN RESULT IN SERIOUS INJURY OR DEATH.
American COOLAIR
P.O. Box 2300 Jacksonville, FL 32203-2300
Phone (904) 389-3646
Fax (904) 387-3449
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