Loren cook Lxul User manual

1PROPELLER UPBLAST IO&M B51071-005

Receiving and Inspection

Carefully inspect the fan and accessories for any damage

and shortage immediately upon receipt of the fan.

• Turn the propeller 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

TUB

Rotating Parts & Electrical Shock Hazard:

Fans should be installed and serviced by qualied personnel

only.

Disconnect electric power before working on unit (prior to re-

moval of guards or entry into access doors).

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 o󰀨, in case of an emergency and

in order that maintenance personnel are provided complete

control of the power source.

Grounding is required. All eld-installed wiring must be com-

pleted by qualied personnel. All eld installed wiring must

comply with National Electric Code (NFPA 70) and all applica-

ble local codes.

Fans and blowers create pressure at the discharge and vac-

uum at the inlet. This may cause objects to get pulled into the

unit and objects to be propelled rapidly from the discharge.

The discharge should always be directed in a safe direction

and inlets should not be left unguarded. Any object pulled into

the inlet will become a projectile capable of causing serious in-

jury or death.

When air is allowed to move through a non-powered fan,

the impeller can rotate, which is referred to as windmilling.

Windmilling will cause hazardous conditions due to unexpect-

ed rotation of components. Impellers should be blocked in po-

sition or air passages blocked to prevent draft when working

on fans.

Friction and power loss inside rotating components will cause

them to be a potential burn hazard. All components should be

approached with caution and/or allowed to cool before con-

tacting them for maintenance.

Under certain lighting conditions, rotating components may

appear stationary. Components should be veried to be sta-

tionary in a safe manner, before they come into contact with

personnel, tools or clothing.

Failure to follow these instructions could result in death or se-

rious injury.

The attachment of roof mounted fans to the roof curb as well

as the attachment of roof curbs to the building structure must

exceed the structural requirements based on the environmen-

tal loading derived from the applicable building code for the

site. The local code o󰀩cial may require variations from the rec-

ognized code based on local data. The licensed engineer of

record will be responsible for prescribing the correct attach-

ment based on construction materials, code requirements and

environmental e󰀨ects specic to the installation.

PROPELLER UPBLAST

Upblast Propeller Roof Fans

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

This publication contains the installation, operation and

maintenance instructions for standard units of the Upblast:

Upblast Propeller Roof Fans.

• LXUL & LXUM

• LTU

• LEU

• LXULMO &

LXUMMO

• LTU MO

• LEUMO

• TUB

• EUB

• AUB

• TUD

• EUD

• AUD

• SUB

• SUBH

• AI Upblast

Carefully read this publication and any

supplemental documents prior to any

installation or maintenance procedure.

Loren Cook catalogs, Propeller Upblast and Propeller Roof,

provide additional information describing the equipment, fan

performance, available accessories and specication 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:

• lorencook.com

• [email protected]

• 417-869-6474 ext. 166

For information and instructions on special equipment, con-

tact Loren Cook Company at 417-869-6474.

PROPELLER UPBLAST IO&M B51071-0052

Handling

Lift propeller roof ventila-

tors by lifting lugs located in-

side the wind band. Never lift

by the shaft, motor, propeller,

or coupling. If your fan has a

special protective nish, han-

dle with extreme care. Even

a small chip will break the

coating’s continuity and de-

stroy its ability to protect the

metal. Propellers are carefully

balanced to give smooth, vibration

free operation. If the propeller is dam-

aged during handling, it will require re-balancing.

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.

Outdoor Storage

To maintain good working condition of the fan when it is

stored outdoors or at a construction site, follow the additional

instructions below.

• Coat the shaft and bearings with grease or rust preventative

compound to help seal out moisture

• Periodically rotate the propeller and operate the dampers (if

supplied) to keep a coating of grease on all internal bearing

parts

• Periodically inspect the fan to prevent damaging conditions

• Block propeller to prevent natural rotation

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

moisture, corrosion, dirt or dust accumulation

Installation

Damper Installation

1. Place the damper inside the curb. Ensure the damper will

open freely for the correct direction of the airow.

2. Secure to curb at the damper shelf by installing at least

two sheet metal screws (#10 x 1/2”) on each side of the

damper, through the tray, with the screw head catching

the ange on the damper. This will prevent the dampers

from lifting.

3. Drill a hole in the curb shelf for conduit needed for motor

wiring.

4. Operate the dampers manually to ensure the blades move

freely. Dampers should be released from full open posi-

tion to check for proper closing.

Safety Recommendation

An inlet guard is recommended. An inlet guard prevents

any large debris from being pulled into the fan and damag-

ing the propeller. The inlet guard is installed on top of the

curb prior to the installation of the fan.

Motor Installation

To prevent damage to the fan during shipping, motors 5HP

and larger and extremely heavy motors (cast iron or severe

duty) are shipped loose and must be eld mounted.

The motor should be mounted so that the motor plate is

between the fan shaft and motor shaft.

• Remove the motor plate mounting bolts and the motor plate

• Remove the motor mounting bolts from the motor plate

• Mount the motor to the motor plate aligning to the appropri-

ate holes

• Place the motor plate on the power assembly and rein-stall

the mounting bolts

Figure 1

foot

1/4

inch

Belt and Pulley Installation

If your fan is a direct drive (models AI, AUD, EUD and TUD),

proceed to Wiring Installation.

Belt tension is determined by the sound of the belts when

the fan is rst 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 e󰀩ciency and dam-

age can occur.

Do not change the pulley pitch diameter to change tension.

The change will result in a di󰀨erent fan speed.

• Loosen the motor plate adjustment nuts on motor base 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

• Adjust the motor plate until proper tension is reached. For

proper tension, a deection of approximately 1/4” per foot of

center distance should be obtained by rmly pressing the

belt. Refer to Figure 1

• Lock the motor plate adjustment nuts in place

• Ensure pulleys are properly aligned. Refer to Figure 2

Tolerance

Center

Distance

Max.

Gap

Up through 12” 1/16”

12” through 48 1/8”

Over 48 1/4”

OFFSET ANGULAR OFFSET/ANGULAR

CENTER

DISTANCE

(CD)

GAP GAP

Pulley Alignment

Pulley alignment is adjusted by loosening the motor pulley set-

screw 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

Lifting Lugs

Figure 2

3PROPELLER UPBLAST IO&M B51071-005

table. When the pulleys are not the same

width, the allowable gap must be adjusted

by half of the di󰀨erence in width. Figure

3illustrates 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 Installation

All wiring should be in accordance with

local ordinances and the National Elec-

trical Code, NFPA 70. Ensure the power supply (voltage,

frequency, and current carrying capacity of wires) is in ac-

cordance with the motor nameplate. Refer to the Wiring Dia-

grams, on page 3.

Lock o󰀨 all power sources before unit is wired to power

source.

Leave enough slack in the wiring to allow for motor move-

ment 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.

Wiring Diagrams

Single Speed, Single Phase Motor

T-

Ground B

Ground A

Line

When ground is required, attach to ground A or B with No. 6 thread

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

2 Speed, 2 Winding, Single Phase Motor

Ground A

Ground B

T-1

T-

Low Speed

High Speed

Line

When ground is required, attach to ground A or B with No. 6 thread

forming screw. To reverse, interchange T-1 and T-4 leads.

Single Speed, Single Phase, Dual Voltage

Ground B

J-10

T-5

Ground A

Link A

Link B

Low Voltage

Line

Ground A

Link A

and B

Line

Ground B

T-5

J-10

When ground is required, attach to ground A or B with No. 6 thread

forming screw. To reverse, interchange T-5 and J-10 leads.

3-Phase, 9 Lead Motor

456

L1L2L3

456

789

12 3

L1L2L3

Low Voltage

208/230 Volts

High Voltage

460 Volts

3 Phase, 9 Lead Motor

Y-Connection

6789

456

12 3

Low Voltage

208/230 V

olts

High V

oltage

460 Volts

L1L3

3 Phase, 9 Lead Motor

Delta-Connection

To reverse, interchange any two line leads.

2 Speed, 1 Winding, 3-Phase Motor

Motor

Together

High Speed

Line

Open

Low Speed

Line

Motor

To reverse, interchange any two line leads. Motors require magnetic

control.

2 Speed, 2 Winding, 3-Phase

T3Low Speed

Low Speed

High Speed

Motor

T13

T12

T11

L2Line

To reverse, High Speed: interchange leads T11 and T12; Low

Speed: interchange leads T1 and T2; Both Speeds: interchange any

two line leads.

Typical Damper Motor Schematic

Fan

Motor

Damper

Motor*

Second

Damper

Motor

ansformer** 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 mod-

els. The damper motor nameplate voltage should be veried prior to

connection.

**A transformer may be provided in some installations to correct the

damper motor voltage to the specied voltage.

Follow the wiring diagram in the disconnect switch and

the wiring diagram provided with the motor. Correctly la-

bel the circuit on the main power box and always identify a

closed switch to promote safety (i.e., red tape over a closed

switch).

PROPELLER UPBLAST IO&M B51071-0054

Fan Installation

The fan support (roof curb) should provide a level surface

for installation. If the roof is pitched more than 1/2:12, a sloped

curb must be used to correct for the incline. If the unit is in-

stalled on a non-level surface, the damper door pivot should

be positioned perpendicular to the peak of the roof. Consult

factory for additional details.

• Place fan over roof opening

• Secure the fan with lag screws, anchor bolts, or other suit-

able fasteners

Final Installation Steps

1. Inspect fasteners and setscrews, particularly fan mount-

ing and bearing fasteners, and tighten according to the

recommended torque shown in the table, Recommended

Torque for Setscrews/Bolts.

2. Inspect for correct voltage with voltmeter.

3. Ensure all accessories are installed.

4. Test the fan to be sure the rotation is the same as indicat-

ed by the arrow marked Rotation.

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.

Smoke Control Units Additional Installation Steps

The damper actuator arms are safety bolted at the factory

to prevent damage or personnel injury during handling and in-

stallation. The bolt must be removed for the damper actuator

to operate correctly. Refer to Figure 4.

• Remove Bolt “A” from each of the damper arms

• Be sure that linkage hook “B” is in contact with bolt “C” to

prevent excessive load on the fusible link

The damper arms will not operate unless this bolt is re-

moved. This bolt should be replaced before any maintenance

or repair work is started.

Bolt C

Linkage

Bolt A

Figure 4 - Safety Bolt Removal

Hook B

Operation

Pre-Start Checks

1. Lock out all the primary and secondary power sources.

Inspect fasteners and setscrews, particularly those used

for mounting the unit, and tighten if necessary.

2. Inspect belt tension and pulley alignment. (Remember, if belt

tension is correct, a loud squeal occurs as the fan increases

to full power.)

3. Inspect motor wiring.

4. Ensure the belt touches only the pulleys.

5. Rotate the propeller to ensure it does not rub against the

base.

6. Ensure fan and ductwork are clean and free of debris.

7. Test the fan to ensure the rotation of the propeller is the

same as indicated by the rotation label.

8. Close and secure all access doors.

9. Restore power to unit.

Recommended Torque for Setscrews/Bolts (IN-LB)

Setscrews Hold Down Bolts

Size

Key Hex

Across

Flats

Recommended

Torque Size Recommended

Torque

Min. Max.

#8 5/64” 15 21 3/8”-16 324

#10 3/32” 27 33 1/2”-13 780

1/4 1/8” 70 80 5/8”-11 1440

5/16 5/32” 140 160 3/4”-10 2400

3/8 3/16” 250 290 7/8”-9 1920

7/16 7/32” 355 405 1”-8 2700

1/2 1/4” 560 640 1-1/8”-7 4200

5/8 5/16” 1120 1280 1-1/4”-7 6000

3/4 3/8” 1680 1920 - -

7/8 1/2” 4200 4800 - -

1 9/16” 5600 6400 - -

Start Up

Turn the fan on. 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 a continuous

squealing noise)

• Improper motor amperage or voltage

If a problem is discovered, immediately shut o the

fan. Lock out all electrical power and check for the

cause of the trouble. Refer to Troubleshooting.

Inspection

Inspection of the fan should be conducted at the rst

30-minute,8-hour and 24-hour intervals of satisfactory op-

eration. During the inspections, stop the fan and inspect as

per the information below.

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.

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 rst month of operation. Fans exhausting contaminated air

(airborne abrasives) should be inspected every three months.

Clean the propeller and air inlets if material build-up is exces-

sive. Excessive build-up can cause imbalance and failure of

the propeller.

5PROPELLER UPBLAST IO&M B51071-005

Regular inspections are recommended for fans exhausting

non-contaminated air.

It is recommended the following inspections be con-

ducted twice per year.

• Inspect bolts and setscrews for tightness. Tighten as

necessary

• Inspect belt wear and alignment. Replace worn belts with

new belts and adjust alignment as needed. See Belt and Pul-

ley Installation, page 2

• Bearings should be inspected as recommended in the Con-

ditions Chart

• Inspect for cleanliness. Clean exterior surfaces only. Remov-

ing dust and grease on motor housing assures proper motor

cooling

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 ushed clean. If another grade of grease is used, it

should be lithium-based.

An NLGI grade 2 grease is a light viscosity, low-torque,

rust-inhibiting lubricant that is water resistant. Its tempera-

ture 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 lubri-

cation instructions shown on the motor nameplate supersede

instructions below.

Motor bearings without provisions for relubrication will op-

erate up to 10 years under normal conditions with no mainte-

nance. In severe applications, high temperatures or excessive

contaminates, it is advisable to have the maintenance depart-

ment disassemble and lubricate the bearings after 3 years of

operation to pre-vent interruption of service.

For motors with provisions for relubrication, follow intervals

of the table below.

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 1-1/2 yrs. 3

months 1 yr. 3 months 6 months 1-1/2

months

Severe 6 months 1-1/2

months 6 months 1-1/2

months 3 months 2 weeks

Motors are provided with a polyurea mineral oil NGLI #2

grease. All additions to the motor bearings are to be with

a compatible grease such as Exxon Mobil Polyrex EM and

Chevron SRI.

Fan Bearings

Fan bearings are lubricated through a grease connector and

should be lubricated by the schedule, Conditions Chart, below

Conditions Chart

RPM Temp °F Greasing Interval

Up to 1000 -30 to 120 6 months

120 to 200 2 months

1000 to 3000 -30 to 120 3 months

120 to 200 1 month

Over 3000 -30 to 120 1 month

120 to 200 2 weeks

Any Speed < -30 Consult Factory

Any Speed > 200 1 week

For best results, lubricate the bearing while the fan is rotat-

ing. Slowly pump grease into the bearing until a slight bead

forms around the bearing seals. Excessive grease can burst

seals thus reduce bearing life.

In the event the bearing cannot be seen, use no more than

three injections with a hand-operated grease gun.

Motor Services

Should the motor prove defective within a one-year period,

contact your local Loren Cook representative or your nearest

authorized electric motor service representative.

Changing Shaft Speed

All belt driven propeller roof fans with motors up to and in-

cluding 5HP are equipped with variable pitch pulleys. To

change the fan speed, perform the following:

• Loosen setscrew on driver (motor) pulley and remove key,

if equipped

• 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

• 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.

Maximum RPM

LTU

Size

Max.

RPM

20 2361

24 1964

30 1581

36 1314

42 110 6

48 973

54 829

60 767

AUB

Size

Max.

RPM

24 1585

30 1180

36 1015

42 935

48 845

LXUM

Size

Max.

RPM

24 1650

30 1305

36 1305

42 1200

48 1150

54 900

60 870

72 688

LXUL

Size

Max.

RPM

20 1270

24 1110

30 930

36 720

42 600

48 508

54 478

60 450

LXUM

Size

Max.

RPM

20 1460

24 1400

30 1170

36 860

42 718

48 598

54 522

60 476

LEU Size Max.

RPM

20 1675

24 1650

30 1350

36 1310

42 1210

48 1214

54 946

60 854

TUB, SUB,

SUBH Size

Max.

RPM

20 2633

24 1993

30 1605

36 1314

42 110 6

48 973

54 888

60 783

72 616

AI Ublast

Size

Max.

RPM

31 3500

36 3500

41 3500

47 3500

54 3500

63 2360

72 2360

80 2360

90 2360

103 2271

113 1788

123 1560

140 1492

160 1300

PROPELLER UPBLAST IO&M B51071-0056

Pulley and Belt Replacement

1. Clean the motor and fan shafts.

2. Loosen the motor plate mounting bolts to relieve the belt

tension. Remove the belt.

3. Loosen the pulley setscrews and remove the pulleys from

the shaft. If excessive force is required to remove the pul-

leys, 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.

4. Clean the bores of the pulleys and place a light coat of oil

on the bores.

5. Remove grease, rust and burrs from the shaft.

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

the motor shaft. Damage to the pulleys can occur when

excessive force is used in placing the pulleys on their re-

spective shafts.

7. After the pulleys have been correctly placed back onto

their shafts, tighten the pulley setscrews.

8. Install the belts on the pulleys. Align and adjust the belts

to the proper tension as described in Belt and Pulley In-

stallation, page 2.

Bearing Replacement

1. The fan bearings are pillow block ball bearings.

2. Remove the wind band and damper assembly to gain ac-

cess to the fan.

3. Loosen the motor plate mounting bolts and remove the

drive belts.

4. Remove the propeller from the shaft.

5. Remove the bearing cover. Remove the four (4) bearing

hold-down bolts and then remove the shaft, bearings, and

driven sheave from the unit as an assembly.

6. Measure and record the location of the bearings and

sheave on the shaft. This will aid the reassembly.

7. Remove the anti-corrosion coating from the shaft with a

suitable degreaser and then remove the pulley from the

shaft. An emery cloth or le may be needed to remove im-

perfections in the shaft left by the setscrews.

8. Remove the bearing from the shaft using a bearing puller.

9. Clean the shaft and bearing bores thoroughly.

10. Place the bearings into position making sure they are not

on a worn section of the shaft. Tapping the inner ring face

with a soft driver may be required. Tighten the setscrews

on the lower bearing.

11. Install the pulley in the correct location on the shaft. Se-

cure the bearing hold-down bolts, but do not fully tighten.

12. Align the setscrews on the top bearing with those on the

lower bearing. Tighten one of them.

13. Rotate the shaft to allow the bearing outer rings to nd

their center of free movement. If your fan is supplied with

a lube line, attach it to the grease connection.

14. Install the propeller on the shaft and adjust bearing posi-

tion to center the propeller in the opening.

15. Tighten hold-down bolts to proper torque. Refer to Rec-

ommended Torque Chart, page 4.

16. Turn the shaft by hand. Resistance should be the same as

it was before hold-down bolts were fully tightened.

17. Tighten bearing setscrews to specied torque.

18. Reassembly the fan.

After 24 hours of continuous operation, tighten the set-

screws to the appropriate torque. This assures the full locking

of the inner race to the shaft. Ensure the socket key or driver

is in good condition with no rounded corners. The key should

be fully engaged in the setscrew and held squarely to prevent

the rounding out of the setscrew socket when applying maxi-

mum torque.

Propeller and Shaft Replacement Precautions

• If the shaft is dropped and bent, it may cause unbalanced

operation of the fan

• When handling the propeller separately from the shaft,

place a support through the hub for lifting, making sure not

to injure the nished bore of the propeller

• Never allow the propeller to rest its entire weight on the

blades. The propeller and shaft can be lifted by slings

around the shaft on each side of the propeller so the propel-

ler is supported by its hub

• If using a chain to lift the propeller, make sure there is su󰀩-

cient padding on the shaft and propeller. This prevents the

scoring of the shaft or injury to the propeller. The chain or

cable should be spread with timbers, or braced by some

other method to prevent damage to the propeller side plates

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 propeller alignment

Excessive Vibration and Noise:

• Damaged or unbalanced propeller

• 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

7PROPELLER UPBLAST IO&M B51071-005

AUD / EUD / TUD Parts List

Part

No.

Description

AUD (Sizes 24 - 48) EUD (Sizes 20 - 60) TUD (Sizes 20 - 60)

1Damper Stop Damper Stop Damper Stop

2Rubber Bumper(2) Rubber Bumper(2) Rubber Bumper(2)

3Wind Band Wind Band Wind Band

4Cast Aluminum

Propeller Aluminum Propeller Triton®Propeller

5Power Assembly Power Assembly Power Assembly

6Motor Plate Motor Plate Motor Plate

7Lower Drum

Assembly

Lower Drum

Assembly

Lower Drum

Assembly

8Motor Motor Motor

9Damper Rubber

Extrusion (2)

Damper Rubber

Extrusion (2)

Damper Rubber

Extrusion (2)

10 Damper Assembly Damper Assembly Damper Assembly

Part

No.

Description

SUB/TUB (Sizes 24 - 72) SUBH (Sizes 24 - 72) TUB with Smoke Control

(Sizes 24 - 72)

1Damper Backstop Damper Backstop Damper Backstop

2Rubber Bumper (2) Rubber Bumper (2) Rubber Bumper (2)

3Damper Rubber Extrusion Damper Rubber Extrusion Damper Rubber Extrusion

4Weather Cover Rubber

Extrusion

Weather Cover Rubber

Extrusion

Weather Cover Rubber

Extrusion

5Motor Plate Motor Plate Motor Plate

6Weather Cover Weather Cover Weather Cover

7Motor Motor Motor

8Driver Sheave Driver Sheave Driver Sheave

9 Belt Set Belt Set Belt Set

10 Split Locking Collar Split Locking Collar Split Locking Collar

11 Driven Sheave Driven Sheave Driven Sheave

12 Bearings (2) Bearings (2) Bearings (2)

13 Bearing Cover Bearing Cover Bearing Cover

14 Lower Drum Assembly Lower Drum Assembly Lower Drum Assembly

15 Shaft Shaft Shaft

16 Heat Slinger (optional) Heat Slinger (optional) Heat Slinger

17 Steel Propeller Steel Propeller Triton®Propeller

18 Spring Loaded Damper

(optional) Spring Loaded Damper Spring Loaded Damper

19 Wind Band Assembly Wind Band Assembly Wind Band Assembly

20 Damper Assembly Damper Assembly Damper Assembly

Parts Numbers

AUD/EUD/TUD

SUB/SUBH/TUB with Smoke Control

PROPELLER UPBLAST IO&M B51071-0058

EUB Sizes 24 - 72

AUB Sizes 24 - 48

Part

No.

Description

EUB (Sizes 24 - 72) AUB (Sizes 24 - 48)

1Damper Backstop Damper Backstop

2Rubber Bumper (2) Rubber Bumper (2)

3 Damper Rubber Extrusion (2) Damper Rubber Extrusion (2)

4Shaft Shaft

5Weather Cover Rubber Extrusion Weather Cover Rubber Extrusion

6Motor Plate Motor Plate

7Weather Cover Weather Cover

8Motor Motor

9Driver Sheave Driver Sheave

10 Belt Set Belt Set

11 Split Locking Collar Split Locking Collar

12 Driven Sheave Driven Sheave

13 Bearings (2) Bearings (2)

14 Bearing Cover Bearing Cover

15 Lower Drum Assembly Lower Drum Assembly

16 Extruded Aluminum Cast Aluminum

17 Wind Band Assembly Wind Band Assembly

18 Damper Assembly Damper Assembly

EUB/AUB

EUB Sizes 24–72

AUB Sizes 24–48

9PROPELLER UPBLAST IO&M B51071-005

11 10 9

Part

No.

LXUL/LXUM Description

Size 20-36 Size 42-60

1Damper Stop

Bracket (2)

Damper Stop

Bracket (2)

2Damper Stop

Channel

Damper Stop

Channel

3Damper

Bumper (2)

Damper

Bumper (2)

4Windband Windband

5X.STREAM

Propeller

X.STREAM

Propeller

6Base Weldment Base Weldment

7Motor Plate Motor Plate

8Motor Motor

9Drive Sheave Drive Sheave

10 Belt Belt

11 Driven Sheave Driven Sheave

12 -Locking Collar

13 Bearing (2) Bearing (2)

14 Shaft Shaft

15 Rain Gutter Rain Gutter

16 Damper Door

(2)

Damper Door

(2)

17 Damper Hinge

(4)

Damper Hinge

(8)

18 Damper Pivot

Rod

Damper Pivot

Rod

19 Damper Pivot

Bracket

Damper Pivot

Bracket

LEU Parts List

11 10 9

Part

No.

LEU Description

Size 20-36 Size 42-60

1Damper Stop Bracket

(2)

Damper Stop Bracket

(2)

2Damper Stop

Channel

Damper Stop

Channel

3 Damper Bumper (2) Damper Bumper (2)

4Windband Windband

5Extruded Propeller Extruded Propeller

6Base Weldment Base Weldment

7Motor Plate Motor Plate

8Motor Motor

9Drive Sheave Drive Sheave

10 Belt Belt

11 Driven Sheave Driven Sheave

12 -Locking Collar

13 Bearing (2) Bearing (2)

14 Shaft Shaft

15 Rain Gutter Rain Gutter

16 Damper Door (2) Damper Door (2)

17 Damper Hinge (4) Damper Hinge (8)

18 Damper Pivot Rod Damper Pivot Rod

19 Damper Pivot

Brackets (2)

Damper Pivot

Brackets (2)

LXUL/LXUM

LEU

PROPELLER UPBLAST IO&M B51071-00510

1716

11 10 9

12 11 10 9

Part No. Description

1Damper Stop Bracket

2Damper Stop Channel

3 Damper Bumper (2)

4Windband

5TRITON® Propeller

6Base Weldment

7Motor Plate

8Motor

9Drive Sheave

10 Belt

11 Driven Sheave

12 Locking Collar

13 Bearings (2)

14 Shaft

15 Rain Gutter

16 Damper Door (2)

17 Damper Hinge

18 Damper Pivot Rod

19 Damper Pivot Bracket

Part

No.

Description

LXULMO/LXUMMO With Smoke Control

1Damper Stop Bracket Damper Stop Bracket

2Damper Stop Channel Damper Stop Channel

3 Damper Bumper (2) Damper Bumper (2)

4Windband Windband

5X.STREAM Series

Propeller

X.STREAM Series

Propeller

6Shaft Shaft

7Bearing Cover Bearing Cover

8Bearings (2) Bearings (2)

9Driven Sheave Driven Sheave

10 Belt Set Belt Set

11 Motor Plate Motor Plate

12 Drive Sheave Drive Sheave

13 Motor Motor

14 Motor Cover Motor Cover

15 Lower Drum Weldment Lower Drum Weldment

16 Damper Pivot Bracket Damper Pivot Bracket

17 Damper Hinge Damper Hinge

18 Damper Pivot Rod Damper Pivot Rod

19 Belt Tunnel (Optional) Belt Tunnel

20 -Heat Slinger

21 Damper Doors (2) Damper Doors (2)

22 -Fire Damper Assembly

LTU

LXULMO/LXUMMO

11PROPELLER UPBLAST IO&M B51071-005

12 11 10 9

21 18 32

12 11 10 9

Part

No.

Description

LTUMO With Smoke Control

1Damper Stop Bracket Damper Stop Bracket

2Damper Stop Channel Damper Stop Channel

3 Damper Bumper (2) Damper Bumper (2)

4Windband Windband

5TRITON® Propeller TRITON® Propeller

6Shaft Shaft

7Bearing Cover Bearing Cover

8Bearings (2) Bearings (2)

9Driven Sheave Driven Sheave

10 Belt Set Belt Set

11 Motor Plate Motor Plate

12 Drive Sheave Drive Sheave

13 Motor Motor

14 Motor Cover Motor Cover

15 Lower Drum Weldment Lower Drum Weldment

16 Damper Pivot Bracket Damper Pivot Bracket

17 Damper Hinge Damper Hinge

18 Damper Pivot Rod Damper Pivot Rod

19 Belt Tunnel (Optional) Belt Tunnel

20 -Heat Slinger

21 Damper Doors (2) Damper Doors (2)

22 -Fire Damper Assembly

Part No. Description

1Damper Stop Bracket

2Damper Stop Channel

3 Damper Bumper (2)

4Windband

5E Series Propeller

6Shaft

7Bearing Cover

8Bearings (2)

9Driven Sheave

10 Belt Set

11 Motor Plate

12 Drive Sheave

13 Motor

14 Motor Cover

15 Lower Drum Weldment

16 Damper Pivot Bracket

17 Damper Hinge

18 Damper Pivot Rod

LTUMO

LEUMO

PROPELLER UPBLAST IO&M B51071-00512

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 modied 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 O󰀩ces, 2015 East Dale Street, Springeld, Missouri 65803-4637, explaining in writing, in detail, your complaint and referring to

the specic model and serial numbers of your fan. Upon receipt by Loren Cook Company of your written complaint, you will be notied, 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 ad-

justment will be completed within sixty (60) business days of the receipt of your written complaint by Loren Cook Company. This warranty gives only the