COOK FCP User Manual

FCP

Fiberglass Blowers

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation, operation and
maintenance instructions for standard units of the FCP
Fiberglass Blowers.

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

Loren Cook Company’s Fiberglass Catalog provides
additional information describing the equipment, fan
performance, available accessories, 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 [phone], extension
166; by FAX at [phone]; or by e-mail at
[e-mail].

For information on special equipment, contact Loren Cook
Company Customer Service Department at [phone].

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 field­installed 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.

Storage

If the fan is stored for any length of time prior to
installation, completely fill the bearings with grease or
moisture-inhibiting oil (refer to Lubricants on page 6).
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.

To maintain good working condition of the fan when it is
stored outdoors, follow the additional instructions below.

• Coat the shaft with grease or a rust preventative
compound.

• Wrap bearings for weather protection.

• Cover the inlet and outlet to prevent the accumulation of
dirt and moisture in the housing.

• Periodically rotate the wheel and operate dampers (if
supplied).

• Periodically inspect the unit to prevent damaging
conditions.

Installation

Motor Installation

Most motors are shipped mounted 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.

Foundation

This fan requires a strong, level foundation of reinforced
poured concrete. A correctly designed concrete foundation
provides the best means for mounting floor units. The
foundation’s size is determined by fan size and
arrangement, motor size and position, and the specific
location of the installation.

Receiving and Inspection

Carefully inspect the fan and accessories for any damage

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 lifting eyes. NOTICE! Never lift

by the shaft, motor, or housing.

Use the following guidelines to calculate foundation size:

• The overall dimensions of the foundation should
extend at least 6 inches beyond the outline of the fan
and its motor.

• The weight of the foundation should be 2 to 3 times the
weight of the unit and its motor.

Isolation

NOTICE! Although a certain amount of vibration is

inherent in operating centrifugal fans, extreme
vibration is a serious problem that may cause
structural and mechanical failure.

Isolation Base: To prevent vibration and noise from being
transferred to the building isolators are recommended.
Isolators should be located between the fan system and the
support structure.

Floor Mounted Rubber-In-Shear (RIS) Isolators

1. Mount fan and motor on an isolation base (if supplied).

2. Elevate fan to provide room to insert isolators between
the base and foundation and block in position.

3. Position isolators under fan and secure bolts.

4. Remove blocks and allow fan to rest on floor. Isolators
must be installed on a level surface (leveling should
not be required).

5. Secure isolators to mounting surface.

Duct Installation

Efficient fan performance relies on the proper installation
of inlet and discharge ducts. Be sure your fan conforms to
the following guidelines.

Non-Ducted Inlet Clearance: If your fan has an open inlet
(no duct work), the fan must be placed 1 fan wheel diameter
away from walls and bulkheads.

Non-ducted Inlet

Clearance

MIN 1 DIA

Ceiling Mounted Spring Isolator

Figure 1 - Ceiling Mount Isolators

Rubber-In-Shear Ceiling Isolators

Ceiling Mounted Isolators: Some applications require fan
systems designed for floor mounting to be suspended from
ceiling supports. In such cases, all fans should be installed
on either rails or bases in the classical orientation. T ypically ,
these systems are hung from the corners by rods, which
include isolation hangers of either spring or rubber-in-shear
design. NOTICE! Under no circumstances is the fan to

be inverted and hung by its base angles.

Spring Isolator

Figure 2 -Floor Mount Isolators

Rubber-In-Shear Isolator

Floor Mounted Spring Isolators

1. Mount fan and motor on isolation base (if supplied).

2. Elevate fan (or isolation base) to operating height and
insert blocks to hold in position.

3. Position isolators under the fan and vertically align by
inserting leveling bolt through mounting holes in the
fan or the base. The isolator must be installed on a
level surface.

4. Adjust the isolators by turning the leveling nut counter
clockwise several turns at a time alternately on each
isolator until the fan weight is transferred onto the
isolators and the fan raises uniformly off the blocks.
Then remove the blocks.

5. Turn lock nut onto leveling bolt and secure firmly in
place against the top of the mounting flange or frame.

6. Secure isolators to mounting surface.

Free Discharge: Avoid a free discharge into the plenum.
This will result in lost efficiency because it doesn’t allow for
a static regain.

Correct

Free Discharge

Incorrect

Inlet Duct Turns: For ducted inlets, allow at least 3 fan
wheel diameters between duct turns or elbows and the fan
inlet.

MIN 3

Correct

Incorrect

Inlet Duct Turns

DIA

Discharge Duct Turns: Where possible, allow 3 duct diame­ters between duct turns or elbows and the fan outlet. Refer
to figure above.

MIN 3

DIA

Correct

Discharge Duct Turns

Incorrect

2

Wheel-to-Inlet Clearance

1 foot

1/4 inch

The correct wheel-to-inlet clearance is critical to proper
fan performance. This clearance should be verified before
initial start-up since rough handling during shipment could
cause a shift in fan components. Refer to wheel/inlet draw­ing for correct overlap.

Adjust the overlap by loosening the wheel hub and mov­ing the wheel along the shaft to obtain the correct value.

A uniform radial gap (space between the edge of the
cone and the edge of the inlet) is obtained by loosening the
inlet cone bolts and repositioning the inlet cone.

Wheel/Inlet Overlap

DETAIL A

OVERLAP

RADIAL
GAP

Size

120 - 180 5/8”
225 - 270 3/4”
300 - 365 1”

Maximum

Overlap

Radial Clearance

Overlap

Wiring Installation

NOTICE! All wiring should be in accordance
with local ordinances and the National Electrical
Code, NFPA 70. Ensure the power supply
(voltage, frequency, and current carrying
capacity of wires) is in accordance with the
motor nameplate.

(See page 5 for diagram)

NOTICE! Fan must be grounded to prevent electrical
discharge.

Leave enough slack in the wiring to allow for motor
movement when adjusting belt tension. Some fractional
motors have to be removed in order to make the connection
with the terminal box at the end of the motor. To remove
motor, remove bolts securing motor base to power
assembly. Do not remove motor mounting bolts.

Follow the wiring diagram in the disconnect switch and
the wiring diagram provided with the motor. Correctly label
the circuit on the main power box and always identify a
closed switch to promote safety (i.e., red tape over a closed
switch).

Wheel Rotation

Test the fan to ensure the rotation of
the wheel is the same as indicated by
the arrow marked Rotation.

For 115 and 230 Single Phase
Motors: Fan wheel rotation is set
correctly at the factory. Changing the
rotation of this type of motor should only
be attempted by a qualified electrician.

are electrically reversible by switching two of the supply
leads. For this reason, the rotation of the fan cannot be

For 208, 230, and 460, 3 Phase Motors: These motors

restricted to one direction at the factory. See Wiring
Diagrams above for specific information on reversing wheel
direction.

NOTICE! Do not allow the fan to run in the wrong
direction. This will overheat the motor and cause
serious damage. For 3-phase motors, if the fan is
running in the wrong direction, check the control
switch. It is possible to interchange two leads at this
location so that the fan is operating in the correct
direction.

Belt and Pulley Installation

Belt tension is determined by
the sound the belts make when
the fan is first started. Belts will
produce a loud squeal which
dissipates after the fan is
operating at full capacity. If
the belt tension is too tight
or too loose, lost
efficiency and possible
damage can occur.

Do not change the pulley
pitch diameter to change tension.
This will result in a different fan speed
than desired.

1. Loosen motor plate adjustment nuts on L-bolts and
move motor plate in order that the belts can easily slip into
the grooves on the pulleys. Never pry , roll, or force the belts
over the rim of the pulley.

2. Slide the motor plate back until proper tension is
reached. For proper tension a deflection of approximately 1/
4” per foot of center distance should be obtained by firmly
pressing the belt. Refer to Figure 3.

3. Lock the motor plate adjustment nuts in place.

4. Ensure pulleys are properly aligned. Refer to Figure 4.

GAP

Figure 3

GAP

Tolerance

Center

Distance

Up thru 12” 1/16”

12” up through

48”

Over 48” 1/4”

Maximum

Figure 4

Gap

1/8”

OFFSET ANGULAR OFFSET/ANGULAR

A

W

B

CENTER

DISTANCE

(CD)

X
Y

Z

3