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lifting eyes on the housing. NOTICE! Never lift by the

shaft, motor, or tiers.

Storage

If the fan is stored for any length of time prior to installa-

tion, completely fill the bearings with grease or moisture-

inhibiting oil (refer to Lubricants on page 5). Rotate the

wheel several revolutions every three to five days to keep a

coating of grease on all internal bearing parts.

Store the fan in its original crate and protect it from dust,

debris and the weather.

Installation

Motor Installation

Most motors are shipped on the fans with belts and drives

installed. However, extremely heavy motors and drives are

shipped separately. These motors and drives will require

field installation. Please refer to page 4.

Duct Installation

Efficient fan performance relies on the proper installation

of inlet and discharge ducts. Be sure your fan conforms to

the following guidelines.

The attachment of roof mounted fans to the roof curb

as well as the attachment of roof curbs to the building

structure must exceed the structural requirements

based on the environmental loading derived from the

applicable building code for the site. The local code

official may require variations from the recognized

code based on local data. The licensed engineer of

record will be responsible for prescribing the correct

attachment based on construction materials, code

requirements and environmental effects specific to

the installation.

Failure to follow these instructions could result in

death or serious injury.

Centrifugal Filtered Supply Fans

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

CFS

This publication contains the installation, operation and

maintenance instructions for standard units of the CFS

Centrifugal Filtered Supply Fans. Carefully read this publi-

cation prior to any installation or maintenance procedure.

Carefully read this publication and any supple-

mental documents prior to any installation or

maintenance procedure.

Loren Cook catalog, CFS, provides additional information

describing the equipment, fan performance, available

accessories, and specification data.

For additional safety information, refer to AMCA publica-

tion 410-96, Safety Practices for Users and Installers of

Industrial and Commercial Fans.

All of the publications listed above can be obtained from

Loren Cook Company by phoning 417/869-6474, extension

166; by FAX at 417/832-9431; or by e-mail at info@loren-

cook.com.

For information on special equipment, contact Loren

Cook Company Customer Service Department at 417/869-

6474.

Receiving and Inspection

Carefully inspect the fan and accessories for any dam-

age and shortage immediately upon receipt of the fan.

• Turn the wheel by hand to ensure it turns freely and

does not bind.

• Inspect dampers (if supplied) for free operation of all

moving parts.

• Record on the Delivery Receipt any visible sign of

damage.

Handling

Lift the fan by the base or remove the lid and lift by the

Rotating Parts & Electrical Shock Hazard:

Disconnect electric power before working on unit.

Follow proper lockout / tagout procedures to ensure

the unit cannot be energized while being installed or

serviced.

A disconnect switch should be placed near the fan in

order that the power can be swiftly cut off, in case of

an emergency and in order that maintenance

personnel are provided complete control of the power

source.

Grounding is required. All field-installed wiring must

be completed by qualified personnel. All field-

installed wiring must comply with National Electric

Code (NFPA 70) and all applicable local codes.

Failure to follow these instructions could result in

death or serious injury.

CFS

1 2 3 4 5 6 7 8

Sommario

Pagina 1

lifting eyes on the housing. NOTICE! Never lift by the shaft, motor, or tiers.StorageIf the fan is stored for any length of time prior to installa-tio

Pagina 2 - Incorrect

2Wheel-to-Inlet ClearanceThe correct wheel-to-inlet clearance is critical to proper fan performance. This clearance should be verified before initial

Pagina 3 - Delta-Connection

3Motor123456TogetherHigh SpeedLineL1L2L3123456OpenLow SpeedLineL1L2L3MotorWiring DiagramsFanMotorDamperMotor*SecondDamperMotorTransformer**Transformer

Pagina 4 - Tolerance

4115 and 230 Single Phase MotorsFan wheel rotation is set correctly at the factory. Chang-ing the rotation of this type of motor should only be attemp

Pagina 5

5Start UpTurn the fan on. In variable speed units, set the fan to its lowest speed and inspect for the following:• Direction of rotation. • Excessive

Pagina 6

6For motors with provisions for relubrication, follow inter-vals of the table below. Motors are provided with a polyurea mineral oil NGLI #2 grease. A

Pagina 7 - Filter Information

7CFS Parts ListPart No.DescriptionSizes 120 - 3651 Belt Set2 Motor Sheave3 Motor Slide Base4 Motor5 Wheel Assembly6 Blower Housing7 Inlet Cone (2)8 Fa

Pagina 8 - Troubleshooting

8Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474lorencook.comCFS IOM Dec 2013TroubleshootingProblem and Potential CauseLow

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