Contents
Introduction .........................................................................1
Shipping and Receiving .....................................................1
Handling .............................................................................. 1
Short Term Storage ...........................................................2
Long Term Storage............................................................2
Foundations and Supporting Structures ..........................2
Fan Installation ................................................................... 2
Factory Assembled Units .............................................2
Disassembled Units .......................................................3
Fan Operation – Safety .....................................................4
Operation Checklist ............................................................5
Maintenance of Fans .........................................................5
General Motor Maintenance .........................................5
Drive Maintenance .........................................................5
Bearing Maintenance .....................................................5
Lubrication ......................................................................6
Wheel and Shaft Maintenance .....................................7
Structural Maintenance .................................................7
Troubleshooting Guidelines................................................7
Troubleshooting Performance Problems
Air Capacity Problems .................................................. 7
Noise Problems ............................................................. 7
Vibration Problems ........................................................ 7
Motor Problems ............................................................. 7
Drive Problems .............................................................. 7
Bearing Problems ..........................................................8
Limitation of Warranties and Claims ............................... 8
Introduction
The purpose of this manual is to provide instructions
that complement good general practices when install-
ing or operating fans manufactured by Twin City Fan &
Blower. It is the responsibility of the purchaser to pro-
vide qualified personnel experienced in the installation,
operation, and maintenance of air moving equipment.
Instructions given in the body of this manual are
general in nature and apply to a variety of models
manufactured by Twin City Fan & Blower. Most units
can be installed and maintained with the instructions
given. Additional product and engineering information is
available at www.tcf.com.
Special applications may require additional information.
These instructions are supplied in the form of attached
appendices. Use the instructions in the appendix if the direc-
tions in this manual differ from instructions in the appendix.
As always, follow good safety practices when install-
ing, maintaining and operating your air moving equip-
ment. A variety of safety devices are available. It is
the user’s responsibility to determine adequate safety
measures and to obtain the required safety equipment.
Shipping and Receiving
All Twin City Fan & Blower products are carefully con-
structed and inspected before shipment to insure the
highest standards of quality and performance.
Compare all components with the bill of lading or
packing list to verify that the proper unit was received.
Check each unit for any damage that may have
occurred in transit. Any damage should be reported
immediately to the carrier and the necessary damage
report filed.
Handling
Handling of all air moving equipment should be con-
ducted by trained personnel and be consistent with safe
handling practices. Verify the lift capacity and operat-
ing condition of handling equipment. Maintain handling
equipment to avoid serious personal injury.
Units shipped completely assembled may be lifted with
slings and spreader bars. Use well-padded chains, cables
or nylon straps. On most units, lifting lugs are provided
for attaching chains (see Figure 1). Lift the fan in a fash-
ion that protects the fan and fan coating from damage.
Never lift a fan by the inlet or discharge flange, shafting
or drives, wheel or impeller, motor or motor base, or in
any other manner that may bend or distort parts.
Partial or disassembled units require special handling.
All parts should be handled in a fashion which pro-
tects the coatings and parts from damage. Components
should be handled such that forces are not concentrated
and bending or distortion cannot occur.
Figure 1. Lifting Lug Locations
©2014 Twin City Fan Companies, Ltd.
ES-52
August 2014
Centrifugal Fans
INSTALLATION, OPERATION & MAINTENANCE MANUAL
Lifting Lugs
Lifting Lugs
Lifting Lugs
Lifting Lugs
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