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Motor Plate

djustment Nut

Motor Plate

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 6. Also, store the

fan in its original crate and protect it from dust, debris and

the weather.

To maintain good working condition of a SQN when it is

stored outdoors, or on a construction site, follow the addi-

tional steps below:

• Cover the inlet and outlet, and belt tunnel opening to

prevent the accumulation of dirt and moisture in the

housing.

• Periodically rotate the wheel and operate dampers (if

supplied) to keep a coating of grease on all internal

bearing parts.

• Periodically inspect the unit to prevent damaging condi-

tions.

Centrifugal Square Inline Fans

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

SQN

This publication contains the installation, operation and

maintenance instructions for standard units of the SQN

Centrifugal Square Inline Fans.

Carefully read this publication and any supple-

mental documents prior to any installation or

maintenance procedure.

Loren Cook catalog SQN provides additional information

describing the equipment, fan performance, available acces-

sories, and specification data.

For additional safety information, refer to AMCA publication

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

[email protected].

For information on special equipment, contact Loren Cook

Company Customer Service Department at (417)869-6474.

Receiving and Inspection

Immediately, upon receipt of an SQN fan, carefully inspect

the fan and accessories for damage and shortage.

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

not bind.

• Inspect dampers for free operation of all moving parts.

• Record on the Delivery Receipt any visible sign of dam-

age.

Handling

Lift the fan by the outside housing (box). NOTICE! Never

lift by the shaft or motor.

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.

SQN-B

Motor Plate Adjustment

1 2 3 4 5 6 ... 11 12

Resumo do Conteúdo

Página 1 - Motor Plate

Motor PlateAdjustment NutMotor PlateStorageIf the fan is stored for any length of time prior to installa-tion, completely fill the bearings with greas

Página 2 - Installation

10PartNo.DescriptionSizes 60 - 165 Sizes 180 - 210 Sizes 225 - 4021 L-Bolt (2) L-Bolt (2) L-Bolt (2)2 Motor Plate (1) Motor Plate (1) Motor Plate (1)3

Página 3 - Tolerance

11Part No.DescriptionPart No.Description1 Motor Support Rail (2) 9 Electrical Box2 Inlet Panel (1) 10 Electrical Conduit (1)3 Inlet Cone, Sizes 135 -

Página 4 - Maintenance

12Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474lorencook.comSQN IOM - Jan 2014Limited WarrantyLoren Cook Company warran

Página 5

2456172839L1L2L3456789123L1L2L3Low Voltage208/230 VoltsHigh Voltage460 Volts3 Phase, 9 Lead MotorY-Connection716789456123Low Voltage208/230 VoltsHigh

Página 6 - Changing Fan Speed

3square to adjust the position of the motor pul-ley until the belt is parallel to the longer leg ofthe square.Blower InstallationThe blower is shipped

Página 7 - Wheel Replacement

4SQN Optional Side Discharge InstallationUpon receiving a SQN for a side discharge installation, please note that the rear discharge block-off panel i

Página 8 - Troubleshooting

5Bottom AccessBottom AccessBottom AccessSide AccessSide AccessSide AccessSide AccessSide AccessSide AccessSide AccessBottom AccessSide AccessExample 1

Página 9

6• Inspect for cleanliness. Clean exterior surfaces only.Removing dust and grease on motor housing assuresproper motor cooling. Fan BearingsThe fan be

Página 10

7Pulley and Belt Replacementa. Remove pulleys from their respective shafts.b. Clean the motor and fan shafts.c. Clean bores of pulleys and coat the bo

Página 11

8TroubleshootingProblem and Potential CauseLow Capacity or Pressure•Incorrect direction of rotation. Make sure the fan rotates in same direction as th

Página 12 - SQN IOM - Jan 2014

9SQN-B/SQN-HP Parts List123456789101112131415Airflow161718Part No.DescriptionSizes 60 - 165 Sizes 180 - 210 Sizes 225 - 4021 L-Bolt (2) L-Bolt (2) L-B

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