Carnes AC Installation Manual

Page 1

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.

Personal Safety

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.

Centrifugal Roof and Wall Exhausters

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

This publication contains the installation, operation and maintenance instructions for st andard units of the AC-Centrifugal Roof and Wall Exhausters.

• ACE-D/ACE-B

• ACW-D/ACW-B/ACW-HP/ACW-XP

• ACRU-D/ACRU-B/ACRU-HP/ACRU-XP

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

Loren Cook catalog, AC, 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 ab ove ca n be o btained 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 and instructions on special equipment, contact Loren Cook Company at 417.869-6474.

Receiving and Inspection

Immediately upon receipt of an AC 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.

• Check dampers (if included) for free operation of all moving parts.

• Record on the Delivery Receipt any visible sign of damage.

Handling

Lift the fan by the shipping carton or lifting lugs provided under top cap. Never lift by the shaft, motor or housing.

Storage

If the fan is stored for any length of time prior to installation, store it in its original shipping crate and protect it from dust, debris and the weather.

Lifting Lugs

grease terminator or grease trough was not purcha sed, a 1 1/16 inch diameter drain hole should be drilled at the bottom side of the fan for drainage.

Wall Exhauster Installation

If your fan is a wall exhauster, a mounting template is shipped with the fan. Use the template to locate the necessary lag screws or anchor bolts on the wall. The fa n can then be lifted and attached easily. Secure with lag screws, anchor bolts, or other suitable fasteners.

Damper Installation

If your fan is supplied with dampers, follow the directions below. If your fan does not include dampers, proceed to Belt and Pulley Installation.

a. Place the damper inside the curb or inside the duct

work. Ensure the damper will open freely for the correct

direction of the airflow. b. Secure to curb at the damper shelf. c. Drill hole in the curb shelf for conduit needed for motor

wiring. d. Operate the dampers manually to ensure the blades

move freely. e. Install fan over curb while aligning the conduit location

with the conduit hole in the curb.

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. Refer to the Wiring Diagrams, page 3.

Upblast units have two wiring conduits. The vertical con-

duit comes plugged. The horizontal conduit is directly above the vertical conduit.

Installation

If the fan was delivered with the motor unmounted, see

the maintenance section for belt and pulley installation.

If the fan was purchased as a wall mount unit and a

ACE-B

Page 2

For Units Without A Juncti on Box

Personal Safety

Recommended Torque for Setscrews/Bolts (IN/LB)

Setscrews

Hold Down Bolts

Size

Key Hex

Across

Flats

Recommended

Torque

Min. Max. Size

Wrench

Torque

No.10 3/32” 28 33 3/8”-16 240

1/4” 1/8” 66 80 1/2”-13 600

5/16” 5/32” 126 156 5/8”-11 1200

3/8” 3/16” 228 275 3/4”-10 2100

7/16” 7/32” 29 348 7/8”-9 2040

1/2” 1/4” 42 504 5/8” 5/16” 92 1104 3/4” 3/8” 120 1440

An approved metal field wiring compartment must be

secured to the unit with two screws in order that the box does not rotate. All wires must be protected from abrasion where they enter and exit the wiring compartment. The green ground wire from the motor must be secured under the green ground screws inside the field wiring compartment using a closed loop connector . Complete connections in accordance with the wiring diagram on the motor.

For Units With A Junction Box

Pull wires through the appropriate conduit. Protect wires

from abrasion where they enter the field wiring compartment and complete connections in accordance with the diagram on the motor.

Lock off all power sources before the fan is wired to

power source.

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.

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).

a. Remove the top cap which covers the motor assembly

by unlatching the snap clips.

b. For internal wiring, run the electrical wire and conduit

through the opening drilled in the damper shelf (refer to Damper Installation), then through the wiring conduit in the ventilator base to the motor compartment. For external wiring, run the wires through the horizontal conduit on upblast units, or under top cap in downblast units.

c. Pull the wires through and complete the wiring. For fur-

ther information. Refer to Wiring Diagrams on page 3.

Final Installation Steps

a. Ensure fasteners and set screws, particularly fan

mounting and bearing fasteners are tightened according to the recommended torque shown in the table on page 2, Recommended Torque for Setscrews/Bolts.

b. Inspect for correct amperage with an amme ter and cor-

rect voltage with a voltmeter. c. Ensure that all accessories are installed. d. Test the fan to be sure the rotation is the same as indi-

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

cated by the arrow marked Rotation.

Do not allow the fan to run in the wrong direction . This

operating in the correct direction.

e. Inspect wheel-to-inlet clearance. Wheels may shift in

shipment. To realign wheel-to-inlet, shift upper bearing so there is an equal radial clearance between the wheel and inlet. Refer to wheel to inlet clearance on page 5.

Operation

Pre-Start Checks

a. Lock out all the primary and secondary power sources. b. Inspect and tighten fasteners and setscrews, particu-

larly fan mounting and bearing fasteners Refer to Torque chart.

c. Inspect belt tension and pulley alignment. Refer to Belt

and Pulley Installation, page 4. d. Inspect motor wiring. Refer to Wiring Installation. e. Ensure belt touches only the pulleys. f. Rotate the wheel to ensure it rotates freely. g. Ensure fan and ductwork are clean and free of debris. h. Close and secure all access doors. i. Restore power to fan.

Start-up

Turn on the fan. In variable speed units, set the fan to its

lowest speed. Inspect for the following:

• Direction of rotation

• Excessive vibration

• Unusual noise

• Bearing noise

• Improper belt alignment or tension (listen for squealing)

• Improper motor amperage or voltage

If a problem is discovered, immediately shut the fan

off. Lock out all electrical power and check f or the cause of the trouble. Refer to Troubleshooting on page 6.

Inspection

Inspection of the fan should be conducted at the first 30

minute, 8 hour and 24 hour intervals of satisfacto ry oper a-

tion. During the inspections, stop the fan and inspect as instructed.

30 Minute Interval

Inspect bolts, setscrews, and motor mounting bolts. Adjust

and tighten as necessary.

8 Hour Interval

Inspect belt alignment and tension. Adjust and tighten as necessary.

24 Hour Interval

Inspect belt tension. Adjust and tighten as necessary.

Page 3

Wiring Diagrams

Fan

Motor

Damper

Motor*

Second

Damper

Motor

ransformer**

Transformer**

L3 L2 L1

T-1 T-4

Ground B

Ground A

Line

Ground B

J-10

T-5

Ground A

Link A Link B

Low Voltage

Line

Ground A

Link A & B

Line

Ground B

T-5

J-10

Single Speed, Single Phase Motor

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

Wiring Diagrams

3 Phase, 9 Lead Motor Y-Connection

Low Voltage

208/230 Volts

728

L2L

To reverse, interchange any 2 line leads.

High Voltage

460 Volts

456

789

L2L

3 Phase, 9 Lead Motor Delta-Connection

Low Voltage

208/230 Volts

7 6

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

Ground A

T-1 T-4

Ground B

High Speed

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

Together

2 3

5 6

Motor

Line

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

Low Speed

High Voltage

1 2 3

4 5

460 Volts

789 456

L1L

Line

Open

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

Typical Damper Motor Schematic

For 3 phase, damper motor voltage should be the same between L1 and

. 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.

Maintenance

Establish a schedule for inspecting all parts of the fan. The frequency of inspection depends on the operating conditions and location of the fan.

Inspect fans exhausting corrosive or contaminated air within the first month of operation. Fans exhausting contaminated air should be inspected every three months.

Regular inspections are recommended for fans exhausting non-contaminated air.

Regular inspections of the Grease Terminator 2 are recommended. Depending on the amount of grease discharged through the fan, the Grease Terminator 2 should be changed every 30 to 45 days to ensure proper operation. Any buildup of grease is easily seen during a visual inspection of the clear canister. However, if the Grease Ter-

To reverse: High Speed-interchange leads T11 and T12. Low Speed-interchange leads T line leads.

and T2. Both Speeds-interchange any 2

minator 2 becomes saturated, grease will no longer be absorbed.

It is recommended the following inspections be conducted

twice per year.

• Inspect bolts and setscrews for tightness. Tighten as necessary. Refer to Torque chart.

• Inspect belt wear and alignment. Replace worn belts with new belts and adjust alignment as needed. Refer to Belt and Pulley Installation, page 4.

• Bearings should be inspected as recommended in the Conditions Chart.

• Inspect for cleanliness. Clean exterior surfaces only. Removing dust and grease on motor housing assures proper motor cooling.

Page 4

Fan Bearings

Relubrication Intervals

Service

Conditions

NEMA Frame Size

Up to and

including 184T

213T-365T 404T and larger

1800 RPM

and less

Over 1800

RPM

1800 RPM

and less

Over 1800

RPM

1800 RPM

and less

Over 1800

RPM

Standard 3 yrs. 6 months 2 yrs. 6 months 1 yr. 3 months

Severe 1 yr. 3 months 1 yr. 3 months 6 months 1 months

The fan bearings are provided prelubricated. Any specialized lubrication instructions on fan labels supersedes information provided herein. Bearing grease is a petroleum lubricant in a lithium base conforming to a NLGI #2 consistency . If user desires to utilize another type of lubricant, they take responsibility for flushing bearings and lines, and maintaining a lubricant that is compatible with the installation.

A NLGI #2 grease is a light viscosity, low-torque, rustinhibiting lubricant that is water resistant. Its temperature range is from -30°F to 200°F and capable of inte rmittent highs of 250°F.

Bearings should be relubricated in accordance with the condition chart below.

For best results, lubricate the bearing while the fan is in

operation. Pump grease in slowly until a slight bead forms around the bearing seals. Excessive grease can damage seal and reduce life through excess contamination an d/or loss of lubricant.

In the event that the bearing cannot be seen, use no

more than three injections with a hand operated grease gun.

ditions. However, it is advisable to add lubricant after 3 years. Use only LIGHT grade mineral oil or SAE 10W oil up to 30 drops. If the unit has been stored for a year or more it is advisable to lubricate as directed above. For VCR direct drive units and other units in severe conditions, lubrication intervals should be reduced to half.

Motors without sleeve bearings (as described above) will have grease lubricated ball or roller bearings. Motor bearings without provisions for relubrication will operate up to 10 years under normal conditions with no maintenance. In severe applications, high temperatures or excessive contaminates, it is advisable to have the maintenance department disassemble and lubricate the bearings after 3 years of operation to prevent interruption of service.

For motors with provisions for relubrication, follow intervals of the table below.

Conditions Chart

RPM Temp °F Greasing Interval

Up to 1000

1000 to 3000

Over 3000

Any Speed < -30 Consult Factory Any Speed > 200 1 week

For moist or otherwise contaminated installations; divide the interval by a factor of 3. For vertical shaft installations divide the interval by a factor of 2.

-30 to 120 6 months

120 to 200 2 months

-30 to 120 3 months

120 to 200 1 month

-30 to 120 1 month

120 to 200 2 weeks

Lubricants

Loren Cook Company uses petroleum lubricant in a lithium base conforming to NLGI grade 2 consistency. Other grades of grease should not be used unless the bearings and lines have been flushed clean. If another grade of grease is used, it should be lithium-based.

A NLGI grade 2 grease is a light viscosity, low-torque, rustinhibiting lubricant that is water resistant. Its temperature range is from -30°F to +200°F and capable of intermittent highs of +250° F.

Motor Bearings

Motors are provided with prelubricated bearings. Any lubrication instructions shown on the motor nameplate supersede instructions below.

Direct Drive 1050/1075,1200,1300 &1500 rp m units use a prelubricated sleeve bearing that has a oil saturated wicking material surrounding it. The initial factory lubrication is adequate for up to 10 years of operation under normal con-

Motors are provided with a polyurea mineral oil NGLI #2 grease. All additions to the motor bearings are to be with a compatable grease such as Exxon Mobil Polyrex EM and Chevron SRI.

The above intervals should be reduced to half for vertical shaft installations.

Motor Services

Should the motor prove defective within a one-year pe riod, contact your local Loren Cook representative or your nearest authorized electric motor service repres en ta tive .

Changing Shaft Speed

All belt driven ventilators (5HP or less) are equipped with variable pitch pulleys. To change fan speed, perform th e following:

a. Loosen setscrew on driver (motor) pulley and remove

key, if equipped.

b. Turn the pulley rim to open or close the groove facing. If

the pulley has multiple grooves, all must be adjusted to the same width.

c. After adjustment, inspect for proper belt tension.

Speed Reduction

Open the pulley in order that the belt rides deeper in the groove (smaller pitch diameter).

Speed Increase

Close the pulley in order that the belt rides higher in the groove (larger pitch diameter). Ensure that the RPM limits of the fan and the horsepower limits of the motor are maintained.

Page 5

Figure 1

1 foot

1/4 inch

Tolerance

Center Distance

Maximum

Gap

Up thru 12” 1/16”

12” up through 48 1/8”

Over 48” 1/4”

Figure 2

Maximum RPM

Replacing Pulleys and Belts

a. Clean the motor and fan shafts. b. Loosen the motor plate mounting bolts to relieve the belt

c. Loosen the pulley setscrews and remove the pulleys

d. Clean the bores of the pulleys and place a light coat of e. Remove any grease, rust or burrs from pulleys.

f. Place the fan pulley on the fan shaft and the motor pulley

g. After the pulleys have been correctly placed back onto

Belt and Pulley Installation

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

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

ACE-B

Size

60 1981 - 100 2002 70 1941 - 120 1671 -

80 1806 - 135 1574 100 2013 - 150 1520 120 1669 - 165 1295 135 1574 - 180 1546 150 1519 - 195 1353 165 1296 - 210 1197 180 1513 - 225 1086 195 1348 - 245 901 210 1190 - 270 766 225 1043 - 300 837 877 245 885 - 330 716 748 270 752 - 365 624 659 300 837 861 402 539 560 330 716 734 445 463 473 365 624 648 490 360 403 402 539 550 445 463 465 490 360 396 540 347 401

ACRU-HP,

ACW-HP

Size

150 1952 165 1728 180 1829 195 1570 210 1626 225 1435 245 1185 1234 270 1025 1049 300 980 1046 330 830 912 365 735 872

Maximum RPM

Standard Reinforced Standard Reinforced

Maximum RPM

Standard Reinforced

ACRU-B,

ACW-B

Size

ACRU-XP,

ACW-XP

Size

165 2508 180 2396 195 2100 210 2126 225 1879 245 1616 270 1656 300 1391 330 1182 365 1132

Maximum RPM

tension. Remove the belt.

from the shaft. If excessive force is required to remove

the pulleys, a three-jaw puller can be used. This tool,

however, can easily warp a pulley. If the puller is used,

inspect the trueness of the pulley after it is removed

from the shaft. The pulley will need replacement if it is

more than 0.020 inch out of true.

oil on the bores.

on the motor shaft. Damage to the pulleys can occur

when excessive force is used in placing the pulleys on

their respective shafts.

their shafts, tighten the pulley setscrews.

a. Loosen motor plate adjustment bolts and slide motor

plate so that belts easily slip into the grooves on the pulleys. Never pry, roll, or force the belts over the rim of the pulley.

b. Slide motor plate 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. 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 wid th, the allowable gap must be adjusted by half of the difference in width. 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.

OFFSET ANGULAR OFFSET/ANGULAR

CENTER

DISTANCE

(CD)

GAP

X Y

Bearing Replacement

The fan bearings are pillow block

type ball bearings.

a. Remove the old bearing. b. Remove any burrs from the shaft

by sanding. c. Slide new bearings onto the shaft

to the desired location and loosely

mount bearings onto the bearing

support. Bearing bolts and set-

screws should be loose enough to

allow shaft positioning. d. Correctly position the wheel and tighten the bearing

bolts securely to the bearing support.

Figure 3

Page 6

e. Align setscrews bearing to bearing and secure tightly to

Above - Drilled hole placement. Right - Wheel puller.

Size

Maximum

Overlap

Size

Maximum

Overlap

100

5/8”

300

1”

120 330 135 365 150 402 165 445 180 490

1-1/4”

195 540 210

3/4”

600 225 660 245 730 270

Wheel/Inlet Overlap

Radial Clearance

Overlap

the shaft.

Never tighten both pairs of setsc rews before securing

bearing mounting bolts. This may damage t he shaft .

f. Inspect the wheel position again. If necessary, readjust

by loosening the bearing bolts and se tscrews and repeat from step c.

Wheel Replacement

a. Drill two holes approximately centered between the

shaft and the edge of the hub OD with the following dimensions:

• 1/4" diameter

• 3/8" to 1/2" deep

• 180° apart in face of hub

b. T ap 1/4" holes to 5/16" thread with the 5/16" hole tap. Do

not drill or tap any larger than recommended.

c. Screw the puller arms into the tapped holes full depth of

threads (3/8" to 1/2" approximately). Align center of puller with center of shaft. Make certain all set screws in hub (normally a quantity of two) are fully removed. Work puller slowly to back wheel off the shaft.

Recommended Puller

Lisle No. 45000 S terling Wheel Puller . This puller is available at most automotive parts retail outlets.

Troubleshooting

Problem and Potential Cause Low Capacity or Pressure

•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.

•Poor fan inlet conditions. There should be a straight clear duct at the inlet.

•Improper wheel alignment.

Excessive Vibration and Noise

•Damaged or unbalanced wheel.

•Belts too loose; worn or oily belts.

•Speed too high.

•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.

•Bearings need lubrication or replacement.

•Fan surge.

Overheated Motor

•Motor improperly wired.

•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.

•Cooling air diverted or blocked.

•Improper inlet clearance.

•Incorrect fan RPMs.

•Incorrect voltage.

Overheated Bearings

•Improper bearing lubrication

•Excessive belt tension.

Wheel-to-Inlet Clearance

The correct wheel-to-inlet clearance is critical to proper fan performance. This clearance sh ou ld be ver ifie d be fo re 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 bearing bolts and set screws which will allow for correct repositioning.

Page 7

ACE-D Parts List

Part

No.

1a 1b Top Cap Cylinder

2 — Top Cap Clip (4) 3 Motor Motor 4 Motor Plate Motor Plate 5 Baffle Baffle 6 Wheel Assembly Wheel Assembly 7 Bird Screen Bird Screen 8 Base Base

9 Conduit Conduit 10 Isolator (4) Isolator (4) 11 Upper Post (4) Upper Post (4) 12 — Lower Post (4)

70-100 120-180

Top Cap

ACE-D Parts Description

Top Cap Lid

Page 8

16 15

ACE-B Parts List

Part

No.

1a Top Cap Lid Top Cap Lid Top Cap Lid Top Cap Lid 1b Top Cap Cylinder Top Cap Cylinder Top Cap Cylinder Top Cap Cylinder

2 Top Cap Clip (4) Top Cap Clip (4) Top Cap Clip (8) Top Cap Clip (8) 3 Motor Motor Motor Motor 4 — Motor Plate Motor Plate Motor Plate 5 Baffle Baffle Baffle Baffle 6 Wheel Assembly Wheel Assembly Wheel Assembly Wheel Assembly 7 Bird Screen Bird Screen Bird Screen Bird Screen 8 Base Base Base Base

9 Conduit Conduit Conduit Conduit 10 Isolator (3) Isolator (4) Isolator (4) Isolator (4) 11 Upper Post (4) Upper Post (4) Upper Post (8) Upper Post (8) 12 Lower Post (4) Lower Post(4) Lower Post (8) Lower Post (8) 13 — 14 Power Assembly Power Assembly Power Assembly Power Assembly 15 Shaft Shaft Shaft Shaft 16 Bearing (2) Bearing (2) Bearing (2) Bearing (2) 17 Drive Sheave Drive Sheave Drive Sheave Drive Sheave 18 Driven Sheave Driven Sheave Driven Sheave Driven Sheave 19 Belt Set Belt Set Belt Set Belt Set

60-100 120-245 270-300 330-540

ACE-B Parts Description

—

— Brace (8)

Page 9

ACW-D Parts List

Part

No.

1a 1b Top Cap Cylinder

2 — Top Cap Clip (4) 3Motor Motor 4 Motor Plate Spun Motor Plate 5 Baffle Baffle 6 Wheel Assembly Wheel Assembly 7 Bird Screen Bird Screen 8 Wall Flange Wall Flange

9 Conduit Conduit 10 Post (4) Post (4) 11 Wind Band Wind Band 12 — Brace (4) 13 Vent Tube (angled) Vent Tube 14 Grommet (2) Grommet (2)

70-100 120-180

Top Cap

ACW-D Parts Description

Top Cap Lid

Page 10

ACW-B Parts List

Part No.

1a Top Cap Lid Top Cap Lid Top Cap Clip 1b Top Cap Cylinder Top Cap Cylinder Top Cap Cylinder

2 Top Cap Clip (4) Top Cap Clip (4) Top Cap Clip (4) 3 Motor Motor Motor 4 Spun Motor Plate Spun Motor Plate Spun Motor Plate 5 Baffle Baffle Baffle 6 Wheel Assembly Wheel Assembly Wheel Assembly 7 Bird Screen Bird Screen Bird Screen 8 Wall Flange Wall Flange Wall Flange

9 Conduit Conduit Conduit 10 Isolator (3) Isolator (4) Isolator (4) 11 Post (4) Post (4) Post (8) 12 Wind Band Wind Band Wind Band 13 — Brace (4) Brace (8) 14 Power Assembly Power Assembly Power Assembly 15 Shaft Shaft Shaft 16 Bearing (2) Bearing (2) Bearing (2) 17 Drive Sheave Drive Sheave Drive Sheave 18 Driven Sheave Driven Sheave Driven Sheave 19 Belt Set Belt Set Belt Set 20 Vent Tube Vent Tube Vent Tube 21 Grommet (2) Grommet (2) Grommet (2)

100 120-165 180-245

ACW-B Parts Description

Page 11

1616

1010

1212

1111

1414

1313

1a1a

1b1b

1515

ACRU-D Parts List

ACRU-D Sizes 70 - 100

ACRU-D Sizes 120 - 180

ACRU-B Parts List

Part

No.

1a 1b Top Cap Cylinder

2 — Top Cap Clip (4) 3 Motor Motor 4 Motor Plate Spun Motor Plate 5Baffle Baffle 6 Wheel Assembly Wheel Assembly 7 Bird Screen Bird Screen 8Base Base 9 Conduit Conduit

10 Isolator (4) Isolator (4)

11 Upper Post (4) Upper Post (4) 12 — L o w e r P o s t ( 4 ) 13 Wind Band Wind Band 14 — Brace (4) 15 Vent Tube Vent Tube 16 Grommet (2) Grommet (2)

Part

No.

1a Top Cap Lid Top Cap Lid Top Cap Lid 1b Top Cap Cylinder Top Cap Cylinder Top Cap Cylinder

2 Top Cap Clip (4) Top Cap Clip (4) Top Cap Clip (8) 3 Motor Motor Motor 4 Spun Motor Plate Spun Motor Plate Spun Motor Plate 5 Baffle Baffle Baffle 6 Wheel Assembly Wheel Assembly Wheel Assembly 7 Bird Screen Bird Screen Bird Screen 8 Base Base Base

9 Conduit Conduit Conduit 10 Isolator (3) Isolator (4) Isolator (4) 11 Upper Post (4) Upper Post (4) Upper Post (8) 12 Lower Post (4) Lower Post (4) Lower Post (8) 13 Wind Band Wind Band Wind Band 14 — Brace (4) Brace (8) 15 Power Assembly Power Assembly Power Assembly 16 Shaft Shaft Shaft 17 Bearing (2) Bearing (2) Bearing (2) 18 Drive Sheave Drive Sheave Drive Sheave 19 Driven Sheave Driven Sheave Driven Sheave 20 Belt Set Belt Set Belt Set 21 Vent Tube Vent Tube Vent Tube 22 Grommet (2) Grommet (2) Grommet (2)

70-100 120-180

Top Cap

ACRU-D Parts Description

Top Cap Lid

ACRU-B Parts Description

100 120-245 270-490

Page 12

Limited Warranty

Loren Cook Company warrants that your Loren Cook fan was manufactured free of defects in materials and workmanship, to the extent stated herein. For a period of one (1) year after date of shipment, we will replace any parts found to be defective without charge, except for shipping costs which will be paid by you. This warranty is granted only to the original purchaser placing the fan in service. This warranty is void if the fan or any part thereof has been altered or modified from its original design or has been abused, misused, damaged or is in worn condition or if the fan has been used other than for the uses described in the company manual. This warranty does not cover defects resulting from normal wear and tear. To make a warranty claim, notify Loren Cook Company, General Offices, 2015 East Dale Street, Springfield, Missouri 65803-4637, explaining in writing, in detail, your complaint and referring to the specific model and serial numbers of your fan. Upon receipt by Loren Cook Company of your written complaint, you will be notified, within thirty (30) days of our receipt of your complaint, in writing, as to the manner in which your claim will be handled. If you are entitled to warranty relief, a warranty adjustment will be completed within sixty (60) business days of the receipt of your written complaint by Loren Cook Company. This warranty gives only the original purchaser placing the fan in service specifically the right. You may have other legal rights which vary from state to state.

LOREN COOK COMPANY

Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474

lorencook.com

AC IOM - February 2008