COOK CAC User Manual

CAC

Air Circulators

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation, operation
and maintenance procedures for standard units of the
CAC - Air Circulator Fans.

• CAC-DF • CAC-WH • CAC-M • CAC-CH • CAC-FH

• CAC-MH • CAC-WX • CAC-WW • CAC-WO • CAC-PO

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

Loren Cook catalog, CAC, 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 info@loren­cook.com.

For information and instructions on special equipment,
contact Loren Cook Company at [phone].

Receiving and Inspection

Carefully inspect the fan and accessories for any damage
and shortage immediately upon receipt of the fan.

• Insepect for any damage that may have occurred during
transit.

• Shipping damage claim must be filed with carrier.

• Check all bolts, screws, setscrews, etc. for looseness
that may have occurred during transit. Retighten as
required.

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

age.

Handling

Lift and support Air Circulator fans as per the assembly
instructions (See Page 2). Do not use hooks, clamps, or
forks to lift any of the circulator heads. Do not lift oscillating
head by their connecting arm or gear assembly.

Storage

To maintain good working condition of the fan do not store
outdoors, follow the additional instructions below.

• Periodically rotate the propeller to keep a coating of
grease on all internal bearing parts.

• Periodically inspect the fan to prevent damaging condi­tions.

• Cover the unit with some type of weather cover to prevent

moisture, corrosion, dirt or dust accumulation.

General Safety Information

To reduce the risk of fire, electric shock, and injury to per­sons, circulator must be installed with brackets that are
marked on their cartons to indicate the suitability with
model. Other brackets cannot be substituted.

To reduce the risk of fire, electric shock, or injury to

persons, observe the following:

a. Use this unit only in the manner intended by the

manufacturer. If you have questions, contact the
manufacturer.

b. Before servicing or cleaning unit, switch power OFF at

service panel and lock service disconnecting means to
prevent power from being switched on accidentally.
When the service disconnecting means cannot be
locked, securely fasten a prominent warning device,
such as a tag, to the service panel. This is important
with motors equipped with automatic reset thermal
protection. Motor may activate without warning.

c. Installation work and electrical wiring must be done by a

qualified person(s) in accordance with all applicable
codes and standards, including fire-rated construction.

d. When cutting or drilling into wall or ceiling, do not

damage electrical wiring and other hidden utilities.

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. Disconnect switches are recommended.
Place the disconnect switch 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.

CAC-P

Motors may be equipped with automatic reset thermal
protection. Motor may activate without warning.

Do not place body parts or objects in circulator, motor
openings, or drives while motor is connected to the
power source.

To reduce the risk of fire, electric shock, or injury to
persons, observe the following: Do not use a three-prong
to two-prong adapter on the power cord. Do not use
circulators with a solid state speed control device. Do not
depend on any switch or thermostat to disconnect power
supply. Always unplug the power cord.

1. Read and follow all instructions, cautionary markings
and make sure power source conforms to requirements
of equipment.

2. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC) and the
Occupational Safety and Health Act (OSHA) in the Unit­ed States, including fire rated construction. Ground
motor in accordance with NEC Article 250, (grounding).

3. Avoid extension cords. If used, assure it is UL rated and
of proper type, gauge, and length. Never operate more
than one fan from a single extension cord.

4. Do not kink power cord or allow it to contact oil, grease,
hot surfaces, sharp objects, or chemicals. Replace worn
or damaged cord immediately.

5. Do NOT use general purpose circulators in flammable,
explosive, chemical-laden, or wet or rainy atmospheres.
Use special purpose circulators designed for that
application. Do not attach ductwork to a circulator.

6. In critical applications, use a suitable alarm (air switch,
temperature sensor, etc.) should the circulator
malfunction.

Installation

Installation, troubleshooting, and parts repair to be per­formed only by qualified personnel.

Where power cord is not provided, connect power to the
motor in accordance with the United States NEC and all
local codes. Motor terminal connection data is provided on
the motor nameplate or on the motor terminal box cover
plate. Use adequate size wire for all branch and feeder
runs.

a. Dock Door Fan (Model CAC-DF): Refer to Page 6, for

correct positioning of parts.

b. Mobile Air Circulators and High Volume, High Velocity

Industrial Fans (Models CAC-M, CAC-WH & CAC-FH):
Locate the fan in the desired location on a stable, level
surface, or on ceiling for ceiling mounted high volume,
high velocity industrial fans. Connect the power cord or
wire unit per all National and Local

Electrical Codes as required.
c. Washdown Air Circulators

(CAC-WW): After
mounting motor, remove
drain plugs.

Operation

1. CAC-P, CAC-W, CAC-PO and CAC-WO are operated
by pulling chain: High - Low - Off

2. CAC-M operates by rocker style switch: On - Off

3. CAC-DF operates by two-speed rocker style switch:
Low - Off - High

4. CAC-FH, CAC-WH, CAC-WW and CAC-WX requires
service switch wired by others.

Maintenance

1. Periodically clean propeller, guard, and motor of any
excessive dirt accumulation. Allow unit to cool; motors
can be hot enough to cause injury.

2. Follow motor manufacturer’s instructions for motor
lubrication.

IMPORTANT: When making repairs, use only Loren Cook
authorized repair parts.

Wall/Ceiling Bracket

1. For mounting circulator to wall, post, or ceiling.
Adjustable pivot bracket allows omni-directional air
circulation.

2. Furnished with secondary support cable for use when
circulator is mounted overhead. NOTE: Not
recommended for use with oscillating circulators when
ceiling mounted.

Wall/Ceiling Bracket Assembly Instructions

(Refer to Figures 1 and 2)

1. The wall/ceiling bracket should be assembled with the
swivel bracket as shown in the appropriate illustration.
The bracket has two holes; be sure smaller hole is as
specified in the illustration.

2. Locate the
wall or ceiling
stud nearest
the desired
fan location.
Attach the
bracket to the
stud using (3)
5/16 x 2”lag
screws or

Mounting

Bolts

Swivel Bracket
(Smaller Hole Down)

Mounting Nut

Figure 1 - Wall Mounted Assembly

appropriately sized bolts and nuts if attaching to I­beams.

NOTE: Always install the

bracket to a minimum of 2 x
4 studding.

3. Position the swivel bracket
in the motor yoke (or along
side the oscillation circular

Swivel Bracket
(Smaller Hole Down)

Mounting

Bolts

cast aluminum support
bracket) and align the pivot
hole with the larger hole in
the swivel bracket.

4. Insert the larger dia. bolt in

Figure 2 - Ceiling
Mounted Assembly

the pivot hole and install
the lock nut finger tight.

5. Insert the smaller dia. bolt in the slot in the motor yoke

2

5-7/16"

10-7/8"

5-7/16"

Circulator
Mounting Bolt

Mounting Nuts

Wall
Stud

10-7/8"

Mounting
Nut

Mounting
Nuts

Mounting
Bolt

Circulator

(or support bracket) and smaller hole in the pivot bracket

and install lock nut finger tight.

6. While holding the circulator at the desired angle, tighten
the smaller diameter bolt.

7. Tighten larger bolt to 200-230 in. lbs. and smaller bolt to
150-160 in. lbs., being careful to maintain the desired
position.

8. Plug the power cord into a properly grounded three­prong receptacle.

To avoid personal injury, circulators must be supported
any time angle is adjusted.

Use only as a wall mounting for oscillating units. Do not
use as a ceiling mount.

Pedestal Mount Assembly Instructions

Circulator head comes pre-assembled, ready for installation.

1. Remove the circulator head, base, and column
assembly from the box.

2. Secure the column assembly onto the base using the
four bolts pro-vided. Apply 35-45 in-lbs. of torque.

3. Adjust column to desired height and lock in position by
tightening socket head screw in collar.

IMPORTANT: Do not over-tighten!

4. Place assembled circulator facedown on a flat surface.

5. Tip pedestal assembly over, placing flattened column
end in motor yoke. Align holes and insert larger bolt and
finger-tighten lock nut.

6. Insert smaller bolt through motor adjustment slot and
column end and finger-tighten lock nut.

7. Stand entire unit upright by lifting at the motor end of the
column. Adjust circulator angle to desired position and
tighten larger bolt to 200-230 in. lbs. and smaller bolt
to150-160 in. lbs.

8. Place assembled pedestal and fanon a flat, level
surface. Do not place the cord under the pedestal base.
Locate assembly where cord will not be a tripping
hazard.

9. Insert the plug into a properly grounded three-prong
receptacle. The unit is now ready for operation.

NOTE: Use only the mounting hardware which is provided.

Optional Heavy Duty Floor Pedestal Mountings

(Standard on CAC-PO)

1. Large diameter column adjusts from 3 1/2- 6 ft.
circulator heights.

2. 33” round base is heavy gauge steel for stability and
ease of moving.

Optional Floor Pedestal Assembly Instructions

1. Insert column firmly into tapered cup.

2. Secure column to base by slightly moving the top of the
column by hand while exerting a downward pressure
until column is tight in tapered cup.

3. Insert enclosed screw and washer through the pedestal
base into the pedestal column and tighten to 150in. lbs.
torque securing the assembly.

4. Adjust column to desired height and lock in position by

tightening socket head screw in collar.

IMPORTANT: Do not over tighten!

5. Place assembled circulator face down on a flat surface.

6. Tip pedestal assembly over, placing flattened column
end in motor yoke (or along side cast aluminum support
on oscillating circulators). Align holes and insert larger
bolt and finger tighten lock nut.

7. Insert smaller bolt through motor adjustment slot and
column end and finger tighten lock nut.

8. Stand entire unit upright by lifting at the motor end of the
column. Adjust circulator angle to desired position and
tighten larger bolt to 200-230 in. lbs. and smaller bolt to
150-160 in. lbs.

9. Place assembled pedestal and fan on a flat, level
surface. Do not place the cord under the pedestal base.
Locate assembly where cord will not be a tripping
hazard.

10. Insert the plug into a properly grounded three-prong
receptacle. The unit is now ready for operation.

Optional Open Pedestal Floor Mounting

1. Large diameter column adjusts from 3 1/2- 6 ft. circulator
heights.

2. 38” open base is heavy gauge steel for stability and
designed for ease of area cleaning.

Optional Open Pedestal Assembly Instructions

1. Insert column firmly into base cup.

2. Secure column to base by inserting the enclosed screw
through the base cup hole and tightening to 50-75 in.
lbs.

3. Adjust column to desired height and lock in position by
tightening socket head screw in collar.

NOTE: Refer to Step 5 of the previous section for
assembling the circulator head to the pedestal.

NOTE: Use only the mounting hardware which is

recommended for use on Cook Air Circulators.

Optional Suspension Bracket

1. For mounting circulators from ceiling beams or rafters.

2. Furnished with secondary support cable for use when
circulator is mounted overhead.

Oscillating circulators must not be used with suspen­sion bracket.

Optional I-Beam Mount

1. For mounting circulator from I-beams and columns.
Adjustable bracket allows omni-directional air
circulation.

2. Length can be increased by adding apiece of standard
1-1/2” threaded pipe between the I-beam mount flange
and the yoke adapter.

NOTE: Use only the mounting hardware which is
recommended for use on Cook Air Circulators.

Optional Suspension Bracket

(Refer to Figure 3)

1. The suspension bracket is designed to fit over standard
size 2” lumber and should be hung from any horizontal
member 2 x 3” or larger.

3