RECEIVING:
Chicago Blower Corporation equipment is prepared for shipment in
accordance with the Uniform Freight Classification. It is thoroughly
inspected at the factory and, barring damage in transit, should be in
good condition upon arrival.
When a carrier signs Chicago Blower Corporation’s bill of lading, the
carrier accepts the responsibility
for any subsequent shortages or
damage evident or concealed, and
any claim must be made against
the carrier by the purchaser.
Evident shortage or
damage should be
noted on the carrier’s delivery document
before signature of accep-
tance. Inspection by the carrier of damage evident or concealed must be
requested. After inspection, issue a purchase order for necessary parts
or arrange for return of the equipment to Chicago Blower Corporation
factory for repair.
Chicago Blower fans are shipped, skidded, and may be handled and
moved using good rigging techniques, being careful to avoid concentrated
stresses that distort any of the parts.
STORAGE:
If the fan installation is to be delayed, store the unit in a dry, protected
area. Protect the fan, especially fan and motor bearings, from moisture
and vibration. Protect all machined surfaces such as shafts, couplings,
and bushings. Rotate the wheel several revolutions every two weeks,
stopping the wheel in a position other than its initial position. Keep the
bearings fully greased by filling monthly with a grease compatible to that
originally supplied. Contact Chicago Blower for extended storage
instructions.
SAFETY PRECAUTIONS:
The fan which you have purchased is a rotating piece of equipment and
can become a source of danger to life or cause injury if not properly
applied. The
maximum operating temperature
or
speed
for which this
fan is designed
must not be exceeded
. These limits are given in our
catalog or on Chicago Blower Corporation drawings.
Personnel who will operate this fan, or those who will perform mainte-
nance thereon,
must be given this bulletin to read and warned of the
potential hazards of this equipment.
This pamphlet contains general recommendations, but specific require-
ments may apply to the individual installation. Such requirements are
outlined in federal, state and local safety codes. Strict compliance with
these codes, and strict adherence to these installation instructions are
the responsibility of the user.
INSTALLATION:
1. Good results
require a proper foundation
. Foundations should be
level, rigid, and of sufficient mass for the equipment. Concrete is
preferable. Its mass should be at least four times the fan weight.
Adequately brace steel platforms in all directions. The minimum natu-
ral frequency of any part must be at least 50% higher than the fan
running speed.
INSTALLATION:
1. Inspect the equipment for correctness and condition. If any discrepancies
are found, contact your local Chicago Blower Corporation representative
immediately for assistance.
2. The fan wheel assembly has been dynamically balanced for vibration-
free operation. Any damage or rough handling may destroy this bal-
ance and require rebalancing. Take care to prevent damage to the
wheel hub finished bore. Protect the fan shaft from mars, gouges, nicks
or bending.
3. The fan bearings have been factory lubricated and are shipped in
cartons to protect them. Do not remove the bearings from the cartons
until ready for assembly.
ASSEMBLY PROCEDURE:
1. Drive panel must be mounted on a rigid and substantial foundation on
the plenum chamber wall. Careful design of the mounting structure is
needed to insure vibration-free operation. If the structure is not rigid,
harmonic vibrations occur. On some “soft” structures, field touch-up bal-
ancing may be necessary to
balance the complete system structure.
2. Make sure the wheel rotation is correct (
clockwise or counterclock-
wise as viewed from the drive side
) for the planned discharge from
the plenum chamber or accessory housing.
3. If the accessory housing is being used, it should be installed flush against
the inside plenum wall before the wheel is put on the fan shaft. Fasten
to the plenum wall by bolting or stitch welding.
4. Check shaft and keyways for nicks from handling. File off. Slide the
wheel onto shaft end with the longest keyway. Insert the key and lightly
tighten the wheel set screws with the wheel positioned half way along
the keyway.
Instructions for Plug Fans
Adjustable Bolts
Motor Base
Locking
Hardware
Drive Panel
(Inlet Side)
Wheel
Shaft
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