COOK Inlet Vane Damper User Manual

1

Inlet Vane Damper

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation, operation
and maintenance instructions for standard Inlet Vane
Damper’s on Centrifugal Blower

Carefully read this publication prior to any installa­tion or maintenance procedure.

For additional safety information, refer to AMCA publica­tion 410-96,

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 417/862-0968; or by e-mail at info@loren­cook.com.

For information on special equipment or torque settings,
contact Loren Cook Company Customer Service Depart­ment at 417/869-6474.

Receiving and Inspection

Carefully inspect the Inlet Vane Damper for any damage
and shortage immediately upon receipt.

• Turn the blower wheel by hand to ensure it turns freely
and does not bind.

• Inspect dampers for free operation of all moving parts.

• Record on the
age.

WARNING

This unit has rotating parts. Safety precautions
should be exercised at all times during installation,
operation, and maintenance.
ALWAYS disconnect power prior to working on fan.

Safety Practices for Users and Installers of

Delivery Receipt

units.

any visible sign of dam-

External

Nested

Handling

Lift unit by the outside housing or by the blower mounting

brace. Never lift by the linkage.

Storage

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

tion, store the unit in its original shipping crate.

Preventive Maintenance

• Check for freedom of operation.

• Check for excessive wear.

• Semi-annually, the linkage should be lubricated with light
weight oil, and inspected for wear. Replace if neces­sary.

• When equipped with actuator, the manufacturer’s recom-

mended maintenance procedure should be observed.

Check visually to see that the vane position agrees with

the position of the control arm.

2015 E. DALE STREET

SPRINGFIELD, MO 65803-4637

www.lorencook.com

NOTE: Only recommended for non-ducted inlets.

If the unit is a double width fan equipped with variable inlet
vane control, synchronize both inlet vanes so that they are in
the same relative position with respect to the impeller on
both inlets).

WARNING
Un-synchronized inlet vanes cause an unbalanced
flow between inlets, which results in deficient air
performance, unbalanced thrust on the bearings and/
or a surge condition in the fan.

Make certain that as variable inlet vanes close they cause
entering air to spin in the same direction as the impeller.

417.869.6474

Inlet Vane Damper IOM - October 1999