Centrifugal Fans
IM-995
SEPTEMBER 2023
Installation, Operation & Maintenance Manual
This manual 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 manual.
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 manual, 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
Impeller Nomenclature ................................................................3
Impeller Types & Impeller 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
Impeller and Shaft Maintenance
...............................................17
Structural Maintenance
.............................................................17
Duct Connections
.......................................................................17
Optional Accessories
............................................................ 18-21
Grouting
.....................................................................................22
Serial Number & Fan Type Nameplate ......................................22
Impeller Placement / Impeller 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
