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Utility and Centrifugal Fans

15

®

Unit Start-Up

Visual Inspection of Equipment

The equipment type and arrangement should be 
verified as ordered at once when it arrives at the 
jobsite. When a discrepancy is found, the local 
representative must be notified immediately so that 
corrective action may be investigated, also verify 
electrical conformance to specifications. Unauthorized 
alterations and unauthorized backcharges will not be 
recognized by manufacturer.

After the unit has been assembled, installed and all 
utilities have been hooked up, the unit is ready for 
operation.

Check

Before starting the unit, check the following:

1.  Confirm that building supply voltage matches the 

voltage for which the unit is wired.

2.  Check all piping and wiring penetrations made by 

contractors for water tightness. All penetrations 
must be made watertight to prevent water 
damage to the unit and building.

3.  Rotate the fan wheel manually to be sure that it 

is free to operate. Remove any dirt or debris that 
may have accumulated during installation.

4.  Check the fan bearing setscrews for tightness.

5.  Check alignment of sheaves and V-belts. See 

Maintenance section.

6.  Inspect all fasteners to ensure that none have 

loosened during shipment.

7.  Check flex coupling for proper alignment and 

connect between motor shaft and fan shaft 
(direct drive).

8.  Check all guarding to ensure that it is securely 

attached and not interfering with rotating parts.

9.  Check all electrical connections for proper 

attachment.

10.  Check housing and ductwork, if accessible, 

for obstructions and foreign material that may 
damage the fan wheel.

11.  Fill drainage piping trap.

WARNING

Disconnect and secure to the 

OFF

 position all 

electrical power to the fan prior to inspection 
or servicing. Failure to comply with this safety 
precaution could result in serious injury or death.

DANGER

Pour écarter les risques de blessure grave ou 
de mort, débrancher et verrouiller l’alimentation 
électrique en position « Arrêt » avant tout contrôle 
ou entretien.

Additional Steps for Initial Start-Up

1.  Check for proper wheel 

rotation by momentarily 
energizing the fan. 
Access to view the 
wheel can be gained 
through the blower 
housing access panel.

One of the most frequently encountered problems 
are motors that are wired to rotate the wheel in 
the wrong direction. This is especially true with 
3-phase installations where the motor will run in 
either direction, depending 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 “Troubleshooting” section 
of this manual if a problem develops.

4.  Grease may be forced out of the bearing seals 

during initial start-up. This is a normal self-purging 
feature for the type of bearing used on this 
product.

Model USFD - Three-phase

This unit ships with the variable frequency drive (VFD) 
preprogrammed based on selected performance. No 
additional programming is required.

1.  To operate, turn disconnect on and allow VFD to 

power up.

2.  Once VFD display is shown, press 

LO/RE

 button 

which will switch control from remote to local.

3.  If necessary, use vertical arrows to scroll through 

display screens to find frequency reference 

F

.

4.  Frequency should be programmed from factory. 

To balance system (by adjusting frequency), press 

Enter

 and use vertical arrows and 

Reset / >

 button 

until desired frequency is achieved. Press 

Enter

 to 

set frequency.

5.  Press 

Run

 to start fan.

6.  If additional adjustment is required, press 

Stop

 and 

repeat steps 3-4.

Содержание CSW

Страница 1: ...l 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 Ad...

Страница 2: ...storage These suggestions are provided solely as a convenience to the user INDOOR The ideal environment for the storage of fans and accessories is indoors above grade in a low humidity atmosphere whi...

Страница 3: ...l Safety Information 1 Receiving 2 Unpacking 2 Handling 2 Storage 2 Inspection and Maintenance During Storage 2 3 Removing from Storage 3 General Information Unit and System Identification Tags 4 Pre...

Страница 4: ...e to the unit When contacting your local manufacturer s representative with future needs or questions please have the information on this label available Tags are mounted in an area which is clearly v...

Страница 5: ...lifting be sure that all shipping materials have been removed from the unit 2 Use standard lifting and rigging practices 3 ALL lifting brackets on each unit must be utilized at the same time 4 Fan to...

Страница 6: ...CSW Arrangement 4 Without Isolation Base CSW Arrangement 1 X Y Motor Position Isolation Base CSW Arrangement 1 W or Z Motor Position Isolation Base USF 400 and CSW Class 0 I II Arrangement 10 Without...

Страница 7: ...ity and Centrifugal Fans 7 USF 400 and CSW Arrangement 10 Without Isolation Base CSW Arrangement 1 No Motor Without Isolation Base Sizes 7 thru 30 Sizes 33 thru 73 CSW Arrangement 4 Without Isolation...

Страница 8: ...solation Base CSW Arrangement 1 X Y Motor Position Isolation Base CSW Arrangement 1 No Motor Without Isolation Base NOTE Lift unit from fan lifting points not from isolation base CSW Arrangement 1 W o...

Страница 9: ...rifugal Fans 9 CSW Arrangement 9 Isolation Base CSW Arrangement 3 No Motor No Drives Without Isolation Base CSW Arrangement 3 W or Z Motor Position Isolation Base Sizes 33 thru 73 CSW Arrangement 3 X...

Страница 10: ...discharge position a portion of the frame angle must be removed Fan rotation is always speci ed from the drive side of the housing USF 200 USF 300 and USF 400 CW UB CCW UB CCW TH CW TH CSW CW BH CCW...

Страница 11: ...4 to one fan wheel diameter Single Fan Installation Fan Drainage Piping and Trap Detail by others Fans may have been supplied with an optional drain Drains are located at the underside of the scroll...

Страница 12: ...arts must have guards to protect personnel Refer to local codes for requirements as to the number type and design Fully secure fan wheel before performing any maintenance The fan wheel may start free...

Страница 13: ...be in a straight line from sheave to sheave with a slight bow on the slack side Aligning Sheaves with a Straight Edge Field Coating Touch Up Procedure for Scratched Areas Standard coating and color is...

Страница 14: ...e inlet cone and wheel should be as shown there is a smooth feel to the pro le when moving from one component to the other Method for Centering Wheel On belt drive units centering can be accomplished...

Страница 15: ...afety precaution could result in serious injury or death DANGER Pour carter les risques de blessure grave ou de mort d brancher et verrouiller l alimentation lectrique en position Arr t avant tout con...

Страница 16: ...lation on the wheel or in the housing should be removed to prevent unbalance and possible damage 4 Inspect fan impeller and housing looking for fatigue corrosion or wear Fan Operation All fans should...

Страница 17: ...000 12 0 25 x x x Number of Shots 4 8 8 10 16 Bearing Lubrication Schedule Shaft bearings are the most critical moving part of a fan Therefore special attention should be given to keeping the bearings...

Страница 18: ...skip frequency function in the VFD programming Failure to remove resonant frequencies from the operating range will decrease the operating life of the fan and void the warranty Model USFD Variable Sp...

Страница 19: ...tioning the new bearing and wheel cone overlap 2 Follow the bearing manufacturers procedures for removal and installation 3 Before removing the bearing bolts make sure the shaft is supported slightly...

Страница 20: ...t l appareil est antid flagrant Pour conna tre les emplois autoris s de l appareil voir son marquage de conformit UL Each fan bears a manufacturer s nameplate with model number and serial number embos...

Страница 21: ...ing Heat Slinger USF 300 Rub Ring USF 300 Shaft Seal USF 300 Fan Shaft Opposite Drive Side Bearing Drive Side Bearing Wheel Inlet Cone Inlet Flange Inlet Companion Flange Grease Container USF 300 Grea...

Страница 22: ...Steel Base with Free Standing Isolators Motor Pulley driver Shaft Pulley driven Drive Frame Assembly Motor Adjustable Motor Plate Companion Outlet Flange Punched Outlet Flange Outlet Guard Belt s Scr...

Страница 23: ...ons in system Use correction factor to adjust for temperature altitude Resize ductwork Clean lters coils Change fan speed High Motor Amp Draw Fan Check rotation of wheel Reduce fan speed Duct System R...

Страница 24: ...________ ________________________________________________ ________________________________________________ ________________________________________________ Date _______________ Time _______________ AM...

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