Centrifugal Fans
IM-995
April 2020
Installation, Operation & Maintenance Manual
This bulletin has been prepared to guide the users of industrial centrifugal fans in the proper installation, operation and
maintenance procedures to ensure maximum equipment life with trouble-free operation. For safe installation, startup and
operational life of this equipment, it is important that all involved with the equipment be well versed in proper fan safety
practices and read this bulletin. It is the user’s responsibility to make sure that all requirements of good safety practices and any
applicable safety codes are strictly adhered to. Because of the wide variety of equipment covered in this bulletin, the instructions
given here are general in nature. Additional product and engineering information is available at www.tcf.com.
REVIEW AMCA PUBLICATION 410 PRIOR TO INSTALLATION
Table of Contents
Overview of Centrifugal Fan Arrangements ............................. 2
Exploded Views ........................................................................... 3
Wheel Nomenclature .................................................................. 3
Wheel Types & Wheel Rotation .................................................4
Safety & Hazard Warnings ......................................................... 5
Shipping & Receiving .................................................................. 5
Handling ......................................................................................6
Unit Storage ................................................................................ 7
Foundations and Supporting Structures ...................................8
Fan Installation, Factory Assembled Units ................................9
Fan Installation, Disassembled Units with Split Housings ...10-11
Bearing Installation ....................................................................12
Safety & Bearing Lubrication Instructions ...............................13
Drive Mounting ......................................................................... 14
Flexible Couplings ......................................................................15
Maintenance ............................................................................. 16
Motor Maintenance .................................................................. 16
Drive Maintenance .................................................................... 16
Fan Bearing Maintenance .........................................................17
Wheel and Shaft Maintenance..................................................17
Structural Maintenance .............................................................17
Duct Connections .......................................................................17
Optional Accessories ............................................................ 18-21
Grouting ..................................................................................... 22
Serial Number & Fan Type Nameplate .................................... 22
Wheel Placement / Wheel Overlap ..................................... 23-28
Troubleshooting Guidelines .....................................................29
Installation / Start-up Checklist ................................................30
Fan Maintenance Log ................................................................31
Refer to the safety section(s) in this manual prior to installing or servicing the fan. The most current version of this installation and
maintenance manual can be found on our website at www.tcf.com/resources/im-manuals.
SAFETY NOTICE
Twin City Fan
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