COOK CCP User Manual

CCP

Centrifugal Plug Fans

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation, operation and
maintenance instructions for standard units of the CCP
Centrifugal Plug Fans.

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

Loren Cook catalog CCP 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 417/869-6474, extension
166; by FAX at 417/832-9431; or by e-mail at info@loren­cook.com.

For information on special equipment, contact Loren
Cook Company Customer Service Department at 417/869-

6474.

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 moisture­inhibiting 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.

Outdoor Storage

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 condi-

tions.

Installation

Figure 2 - Non-ducted Inlet Clearance

When mounting the fan, be sure that the structure of the
wall is rigid enough to support the weight of the fan and its
motor.

Consult the specific fan type submittal for the exact fan
dimensions needed to determine the size of your wall open­ing. The wall opening should be just large enough for the

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 lifting eyes on the housing.

NOTICE! Never lift by the shaft, wheel, or motor.

CCP

1 foot

1/4 inch

Wheel-to-Inlet Clearance

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.

Size Overlap

100 - 165 3/16”
180 - 245 1/4”
270 - 300 5/16”
330 - 365 3/8”

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.

208, 230, and 460, 3 Phase Motors

These motors are electrically reversible by switching two
of the supply leads. For this reason, the rotation of the fan
cannot be restricted to one direction at the factory. See
Wiring Diagrams on page 3 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.

402 7/16”
445 1/2”

Wiring Installation

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.

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).

Airfoil Backward

Wheel Rotation

Test the fan to ensure the rotation of the wheel is the

Proper Wheel Rotation

Inclined

same as indicated by the arrow marked Rotation.

Figure 1

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.

a. Loosen motor plate adjustment 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.

b. 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 1.

Use of Variable Frequency Drives

Motors -

Motors that are to be operated using a Variable Fre­quency Drive (VFD) must be VFD compatible. At a mini­mum, this must be a Premium Efficiency motor with Class F
insulation. Motors that are not supplied by Loren Cook
Company should have the recommendation of the motor
manufacturer for use with a VFD.

Grounding -

The fan frame, motor and VFD must be connected to a
common earth ground to prevent transient voltages from
damaging rotating elements.

Wiring -

Line reactors may be required to reduce over-voltage
spikes in the motors. The motor manufacturer should be

2

consulted for recommended line impedence and usage
of line reactors or filters, if the lead length between the
VFD and the motor exceeds 10 feet (3m).

Fan -

It is the responsibility of the installing body to perform
coast-down tests and identify any resonant frequencies
after the equipment is fully installed. These resonant fre­quencies are to be removed from the operating range of
the fan by using the “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.

Belt and Pulley Installation continued

c. Lock the motor plate adjustment bolts in place.

d. Ensure pulleys are properly aligned. Refer to Figure

2.

Pulley Alignment

Pulley alignment is adjusted by loosen­ing the motor pulley setscrew and by
moving the motor pulley on the motor
shaft.

Figure 2 indicates where to measure the
allowable gap for the drive alignment tol­erance. All contact points (indicated by
WXYZ) are to have a gap less than the
tolerance shown in the table. When the
pulleys are not the same width, the

Figure 3

allowable gap must be adjusted by half of the difference in
width (As shown in A & B of Figure 2). Figure 3 illustrates
using a carpenter’s square to adjust the position of the
motor pulley until the belt is parallel to the longer leg of the
square.

Wiring Diagrams

Single Speed, Single Phase Motor

Ground A

L

T-1

T-4

Ground B

When ground is required, attach to ground A or B with no. 6 thread form-

1

Line

L

2

Wiring Diagrams

3 Phase, 9 Lead Motor
Y-Connection

Low Voltage

208/230 Volts

4

5

6

3

1

9

728

L2L

L

1

3

High Voltage

460 Volts

456

789

12

L2L

L

1

To reverse, interchange any 2 line leads.

3 Phase, 9 Lead Motor
Delta-Connection

Low Voltage

208/230 Volts

7
6

1

3

L

L

1

3

8
4
2

2

ing screw. To reverse, interchange T-1 and T-4.

2 Speed, 2 Winding, Single Phase Motor 2 Speed, 1 Winding, 3 Phase Motor

Ground A

T-1

T-4

Ground B

High Speed

L

1

L

2

Low Speed

Line

When ground required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-1 and T-4 leads.

Motor

To reverse, interchange any 2 line leads. Motors require magnetic control.

High Speed

1

Together

2
3

L

4

1

L

5
6

L

2

Line

3

Single Speed, Single Phase, Dual Voltage 2 Speed, 2 Winding, 3 Phase

Ground A

L

T-5

J-10

Link A

Link B

Low Voltage

Ground B

Line

L

1

T-5

J-10

2

Ground B

When ground required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-5 and J-10 leads.

Ground A

Link A & B

L

Line

L

1

2

To reverse: High Speed-interchange leads T11 and T12.
Low Speed-interchange leads T1 and T2. Both Speeds-interchange any 2
line leads.

Typical Damper Motor Schematic

9

5
3

L

3

Motor

High Voltage

460 Volts

789

456

3

12

L1L

L

2

Low Speed

1
2
3

4
5

6

3

L
L

L

Open

1

2

Line

3

Fan

Motor

Transformer**

Damper

Motor*

Second
Damper

Motor

L3
L2
L1

Transformer**

For 3 phase, damper motor voltage should be the same between L1 and
L2. For single phase application, disregard L3. *Damper motors may be
available in 115, 230 and 460 volt models. The damper motor nameplate
voltage should be verified prior to connection. **A transformer may be pro­vided in some installations to correct the damper motor voltage to the
specified voltage.

3