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Only qualified personnel should install this fan. 
Personnel should have a clear understanding of these 
instructions and should be aware of general safety 
precautions. Improper installation can result in electric 
shock, possible injury due to coming in contact with 
moving parts, as well as other potential hazards. 
Other considerations may be required if high winds 
or seismic activity are present. If more information 
is needed, contact a licensed professional engineer 
before moving forward.

1.  Follow all local electrical and safety codes, as 

well as the National Electrical Code (NEC) and the 
National Fire Protection Agency (NFPA), where 
applicable. Follow the Canadian Electric Code 
(CEC) in Canada.

2.  The rotation of the wheel is critical. It must be free 

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 max cataloged 

fan rpm. Adjustments to fan speed significantly 
effects 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 power cable to kink or come in 

contact with oil, grease, hot surfaces or chemicals. 
Replace cord immediately if damaged.

6.  Verify that the power source is compatible with the 

equipment.

7.  Never open access doors to a duct while the fan is 

running.

General Safety Information

DANGER

Always disconnect power before working on or near 
a fan. Lock and tag the disconnect switch or breaker 
to prevent accidental power up.

CAUTION

When servicing the fan, motor may be hot enough 
to cause pain or injury. Allow motor to cool before 
servicing.

CAUTION

Precaution should be taken in explosive 
atmospheres.

Installation, Operation and Maintenance Manual

Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the 
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions 
could result in personal injury and/or property damage! Retain instructions for future reference.

®

Part #459968 

Tubular Centrifugal & Mixed Flow

Model TCF 

Tubular Centrifugal Inline Fan

Models QEI and QEID

Mixed Flow Inline Fan

1

Model TCF and Models QEI/QEID Centrifugal

Summary of Contents for QEI

Page 1: ... be checked to make sure it is not exceeding the motor nameplate amps 5 Do not allow the power cable to kink or come in contact with oil grease hot surfaces or chemicals Replace cord immediately if damaged 6 Verify that the power source is compatible with the equipment 7 Never open access doors to a duct while the fan is running General Safety Information DANGER Always disconnect power before work...

Page 2: ...Inc or the equivalent For hard to reach internal surfaces or for occasional use consider using Tectyl 511M Rust Preventive or WD 40 or the equivalent Receiving Upon receiving the product check to make sure all items are accounted for by referencing the bill of lading to ensure all items were received Inspect each crate for shipping damage before accepting delivery Notify the carrier if any damage ...

Page 3: ...per wheel settings for radial gap and alignment See below Radial Gap Overlap Alignment Efficient fan performance can be maintained by having the correct radial gap overlap and alignment These items should be checked before start up and after the fan has been in operation for 24 hours TCF Radial Gap Radial gap is adjusted by loosening the inlet cone bolts and centering the cone on the wheel If addi...

Page 4: ... Flexible Sleeve Flanged End Connection TCF QEI QEID Optional companion flanges are bolted to the fan to provide a slip fit connection for a flexible sleeve Note Flexible sleeve attachment hardware not provided Unit Start Up 1 Disconnect and lock out all power switches to fan 2 Check all fasteners set screws and locking collars on the fan wheel bearings drive motor base and accessories for tightne...

Page 5: ... into operation a routine maintenance schedule should be set up to accomplish the following 1 Lubrication of bearings and motor 2 Variable inlet vanes should be checked for freedom of operation and wear 3 Wheel housing bolts and set screws on the entire fan should be checked for tightness 4 Any dirt accumulation on the wheel or in the housing should be removed to prevent unbalance and possible dam...

Page 6: ... assists proper motor cooling Greasing of motor bearings is only required when fittings are provided Many fractional motors are permanently lubricated and require no further lubrication Motors supplied with grease fittings should be greased in accordance with the manufacturer s recommendations When motor temperature does not exceed 104ºF 40ºC the grease should be replaced after 2000 hours of runni...

Page 7: ...assembly out of the fan housing inlet side 6 Replace bearings on shaft bearing bearing plate assembly Fan Bearing Replacement Replacement of bearings requires disassembly of internal components For this procedure access must be available to both the inlet and outlet ends The following procedure assumes belts have already been loosened and removed Belts are removed by adjusting the motor pivot plat...

Page 8: ...aves on motor fan shaft Adjust belt tension Align sheaves properly see page 6 Replace worn belts or sheaves Bearings Replace defective bearing s Lubricate bearings Tighten collars and fasteners Wheel Unbalance Clean all dirt off wheel Check wheel balance rebalance in place if necessary Volume Too Low Fan Check wheel for correct rotation Increase fan speed Duct System See pages 3 and 4 Volume Too H...

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