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3

Centrifugal Single-Width Blower

®

Removing from Storage

As fans are removed from storage to be installed in 
their final location, they should be protected and 
maintained in a similar fashion until the fan equipment 
goes into operation.
Prior to assembly and installation of the unit and system 
components, inspect the fan assembly to make sure it is 
in working order.
1.  Check all fasteners, set screws on the fan, wheel, 

bearings, drive, motor base and accessories  
for tightness.

2.  Rotate the fan wheel by hand and assure no parts 

are rubbing.

3.  Ensure wheel backplate is equidistant from inlet cone 

ID on both sides (in case of double-wide wheel) for 
proper wheel centering.

Table of Contents

System Set-Up  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation
  Discharge Positions  . . . . . . . . . . . . . . . . . . . . . . . . 5
  Method for Wheel Centering  . . . . . . . . . . . . . . . . . 5
  V-Belt Drive Installation  . . . . . . . . . . . . . . . . . . . . . 5
  Alignment of Pulleys and Belts   . . . . . . . . . . . . . . . 5
  Wheel Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Start-Up
  Visual Inspection of Equipment  . . . . . . . . . . . . . . . 6
 Check  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
  Additional Steps for Initial Start-Up . . . . . . . . . . . . 6
 Vibration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Routine Maintenance and Operation
  Fan Operation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
  Belt Drive Maintenance  . . . . . . . . . . . . . . . . . . . . . 7
  Bearing Lubrication Schedule  . . . . . . . . . . . . . . . . 8
  Wheel and Fastener Maintenance  . . . . . . . . . . . . . 8
Bearing Replacement
  Bearing Removal  . . . . . . . . . . . . . . . . . . . . . . . . . . 9
  Bearing Installation   . . . . . . . . . . . . . . . . . . . . . . . . 9
Motors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Our Commitment . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Summary of Contents for CSB

Page 1: ...to rotate without striking or rubbing any stationary objects 3 Motor must be securely and adequately grounded 4 Do not spin fan wheel faster than the maximum cataloged fan RPM Adjustments to fan speed with Variable Frequency Drives VFD may affect motor load If the fan RPM is changed the motor current should be checked to make sure it is not exceeding the motor nameplate amps 5 Do not allow the pow...

Page 2: ...atures should be evenly maintained between 30 to 110 F 1 to 43 C wide temperature swings may cause condensation and sweating of metal parts All accessories must be stored indoors in a clean dry atmosphere Remove any accumulations of dirt water ice or snow and wipe dry before moving to indoor storage To avoid sweating of metal parts allow cold parts to reach room temperature To dry parts and packag...

Page 3: ... assure no parts are rubbing 3 Ensure wheel backplate is equidistant from inlet cone ID on both sides in case of double wide wheel for proper wheel centering Table of Contents System Set Up 4 Installation Discharge Positions 5 Method for Wheel Centering 5 V Belt Drive Installation 5 Alignment of Pulleys and Belts 5 Wheel Rotation 5 Unit Start Up Visual Inspection of Equipment 6 Check 6 Additional ...

Page 4: ... 6 0 4 R o t ati One fan wheel diameter 3 4 to one fan wheel diameter One fan diameter 3 4 to one fan wheel diameter Parallel Fan Installation System Set Up Installations with inlet or discharge configurations that deviate from this manual may result in reduced fan performance Restricted or unstable flow at the fan inlet can cause pre rotation of incoming air or uneven loading of the fan wheel yie...

Page 5: ...sheaves on shafts Do not drive sheaves on as this may result in bearing damage 3 Align fan and motor sheaves with a straight edge or string and tighten 4 Place belts over sheaves Do not pry or force belts as this could result in damage to the cords in the belts 5 Adjust the tension until the belts appear snug Run the unit for a few minutes and allow the belts to set properly 6 With the fan off and...

Page 6: ...ding on how it has been wired To reverse rotation of a 3 phase motor interchange any two of the three electrical leads Single phase motors can be reversed by changing internal connections as described on the motor label or wiring diagram 2 Fans with multi speed motors should be checked on low speed during initial start up 3 Check for unusual noise vibration or overheating of bearings Refer to the ...

Page 7: ...o loose or too tight or misaligned sheaves Abnormally high belt tension or drive misalignment will cause excessive bearing loads and may result in failure of the fan and or motor bearings Conversely loose belts will cause squealing on start up excessive belt flutter slippage and overheated sheaves Either excessively loose or tight belts may cause fan vibration When replacing V belts on multiple gr...

Page 8: ...ting and until clean grease is seen purging from the bearing The lubrication interval may be modified based on the condition of the purged grease If bearing is not visible to observe purged grease lubricate with number of shots indicated in chart for bore size For conditions including high temperatures moisture dirt or excessive vibration consult the factory for a specific lubrication interval for...

Page 9: ... procedures Before putting the new bearings on the shaft you may need to break what is called swivel torque on the bearings depending on style of bearing This is done by holding the bearing housing securely and being able to move the inner bearing race around freely 2 Apply light film of oil on shaft then gently slide the new bearings onto the shaft Do not hammer bearing onto shaft 3 Align bearing...

Page 10: ...tude Resize ductwork Clean filters coils Change fan speed High Motor Amp Draw Fan Check rotation of wheel Reduce fan speed Duct System Resize ductwork Check proper operation of isolation and bypass dampers Check filters and access doors Fan Doesn t Operate Electrical Supply Check fuses circuit breakers Check for switches turned off or disconnected Check for correct supply voltage Drive Check for b...

Page 11: ...____________________________ ________________________________________________ ________________________________________________ Date________________ Time________________ AM PM Notes ___________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ____________________________...

Page 12: ...n within the product area tab and in the Technical Data Library info greenheck co in www greenheck co in www greenheck com Our Commitment AMCA Publication 410 96 Safety Practices for Users and Installers of Industrial and Commercial Fans provides additional safety information This publication can be obtained from AMCA International Inc at www amca org 484640 CSB Rev 1 June 2020 Copyright 2020 Gree...

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