SAFETY - INSTALLATION - OPERATING
AND MAINTENANCE INSTRUCTIONS
Bulletin IMI-PF 6/17
1675 GLEN ELLYN ROAD • GLENDALE HEIGHTS, ILLINOIS 60139
PHONE: 630/858-2600 • FAX: 630/858-7172www.chicagoblower.com
INDUSTRIAL PLUG FANS
This Manual is for the following Fans: D/44 Plug Fans; D/70 Plug Fans.
TO ORDER SPARE PARTS:
D/70 Plug Fan
Spare or repair parts may be ordered from your nearest
Chicago Sales Engineer by giving the part name,
(Wheel, Motor, Bearing, etc.) and the FAN SERIAL
NUMBER taken from the nameplate or the JOB ORDER
drawings. If possible also give the bearing or shaft
size and the fan class. Due to the small number of
parts required, spare parts lists are neither necessary nor
available. Use these instructions instead.
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.
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
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
maximum operating temperature
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-
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.
1. Inspect the equipment for correctness and condition. If any discrepancies
are found, contact your local Chicago Blower Corporation Engineer
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.