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
............................................. 4
Safety & Hazard Warnings ...........................................................5
Shipping & Receiving....................................................................5
Handling .......................................................................................6
Unit Storage .................................................................................7
...................................... 8
...................................9
.... 10-11
....................................................................12
.................................13
..........................................................................14
Flexible Couplings ......................................................................15
..............................................................................16
................................................................... 16
.....................................................................16
..........................................................17
...............................................17
.............................................................17
.......................................................................17
............................................................ 18-21
.....................................................................................22
Serial Number & Fan Type Nameplate ......................................22
Impeller Placement / Impeller Overlap ............................... 23-28
.......................................................29
..................................................30
.................................................................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