Loren Cook LXUL, LTU, LEU, LXULMO, LTUMO Installation, Operation And Maintenance Manual

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Page 1

PROPELLER UPBLAST

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 M O

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 -9 6 , Safety Practices for Users and Installers of Industrial

and Commercial Fans.

All of the publications listed above can be obtained from:

• lorencook.com

• info@lorencook.com

• 417-869-6474 ext. 166

For information and instructions on special equipment, con-

tact Loren Cook Company at 417-869-6474.

• LEUMO

• TUB

• EUB

• AUB

• TUD

• EUD

• AUD

• SUB

• SUBH

• AI Upblast

Upblast Propeller Roof Fans

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 removal 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 completed by qualied personnel. All eld installed wiring must

comply with National Electric Code (NFPA 70) and all applicable local codes.

Fans and blowers create pressure at the discharge and vacuum 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 injury or death.

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

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 unexpected rotation of components. Impellers should be blocked in position 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 contacting them for maintenance.

Under certain lighting conditions, rotating components may appear stationary. Components should be veried to be stationary in a safe manner, before they come into contact with personnel, tools or clothing.

Failure to follow these instructions could result in death or serious 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 environmental loading derived from the applicable building code for the site. The local code o󰀩cial may require variations from the recognized 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.

1PROPELLER UPBLAST IO&M B51071-005

Page 2

Handling

OFFSET ANGULAR OFFSET/ANGULAR

GAP

Lifting Lugs

Lift propeller roof ventila-

tors by lifting lugs located inside the wind band. Never lift

by the shaft, motor, propeller,

or coupling. If your fan has a special protective nish, handle with extreme care. Even a small chip will break the coating’s continuity and destroy 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 position to check for proper closing.

An inlet guard is recommended. An inlet guard prevents any large debris from being pulled into the fan and damaging the propeller. The inlet guard is installed on top of the curb prior to the installation of the fan.

PROPELLER UPBLAST IO&M B51071-0052

Safety Recommendation

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 appropriate holes

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

Figure 1

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 damage 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

Up through 12” 1/16”

12” through 48 1/8”

Over 48 1/4”

Max.

Gap

CENTER

DISTANCE

(CD)

Figure 2

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

Page 3

table. When the pulleys are not the same

T-

Ground B

Line

Ground A

Ground B

T-

Line

Ground B

J-10

Ground A

Line

Ground B

1 728

3 9

L2L

456

789

L2L

Low Voltage

208/230 Volts

High Voltage

460 Volts

3 Phase, 9 Lead Motor Y-Connection

208/230 V

oltage

3 Phase, 9 Lead Motor Delta-Connection

High Speed

Low Speed

Line

Low Speed

High Speed

Motor

Line

Motor

width, the allowable gap must be adjusted by half of the di󰀨erence 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.

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 Diagrams, 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 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.

Wiring Diagrams

Single Speed, Single Phase Motor

Ground A

3-Phase, 9 Lead Motor

Low Voltage

7 6

To reverse, interchange any two line leads.

olts

High V

460 Volts

789

456

2 Speed, 1 Winding, 3-Phase Motor

Open

Motor

Together

Line

Motor

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

control.

2 Speed, 2 Winding, 3-Phase

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

High Speed

T-1

Low Speed

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

T-5

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.

Link A Link B

Low Voltage

Line

T-5

J-10

Link A and B

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

ansformer**

Damper

Motor*

Second

Damper

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 veried prior to

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

damper motor voltage to the specied voltage.

L3 L2 L1

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).

3PROPELLER UPBLAST IO&M B51071-005

Page 4

Fan Installation

Figure 4 - Safety Bolt Removal

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 installation. 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 removed. This bolt should be replaced before any maintenance or repair work is started.

Bolt C

Linkage

Hook B

Bolt A

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

Key Hex

Size

Across

Flats

#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 - -

Recommended

Tor q u e

Min. Max.

Size

Recommended

Tor q u e

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.

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.)

PROPELLER UPBLAST IO&M B51071-0054

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 excessive. Excessive build-up can cause imbalance and failure of the propeller.

Page 5

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 Conditions Chart

• Inspect for cleanliness. Clean exterior surfaces only. Removing 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 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 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

NEMA Frame Size

213T–365T 404T and larger

1800 RPM

and less

6 months

1800 RPM

1 yr. 3 months 6 months

Over

1-1/2

months

1800

Over 1800

RPM

and less

3 months 2 weeks

RPM

1-1/2

months

Service

Conditions

Standard 1-1/2 yrs.

Severe 6 months

including 184T

1800 RPM

and less

Up to and

months

Over 1800 RPM

1-1/2

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 Tem p °F Greasing Interval

Up to 1000

1000 to 3000

Over 3000

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

-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

For best results, lubricate the bearing while the fan is rotating. 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

LXUL

AI Ublast

Max.

Size

RPM

20 1270 24 1110 30 930 36 720 42 600 48 508 54 478 60 450

Size

Max. RPM

31 3500 36 3500 41 3500 47 3500

54 3500

63 2360 72 2360 80 2360

90 2360 103 2271 113 178 8 123 1560 140 1492 160 1300

LXUM

Size

20 14 60 24 140 0 30 117 0 36 860 42 718 48 598

54 522

60 476

AUB Size

24 1585 30 118 0 36 1015 42 935 48 845

LTU

Size

20 2361 24 1964 30 15 81 36 1314 42 110 6 48 973 54 829 60 767

Max. RPM

LEU Size

20 1675 24 165 0 30 135 0 36 1310 42 1210 48 1214 54 946 60 854

LXUM

Size

24 1650 30 13 05 36 13 05 42 120 0 48 115 0 54 900 60 870 72 688

TUB, SUB, SUBH Size

20 2633 24 1993 30 1605 36 1314 42 1106 48 973 54 888 60 783 72 616

Max. RPM

5PROPELLER UPBLAST IO&M B51071-005

Page 6

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 respective 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 access 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 emer y cloth or le may be needed to remove imperfections 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 position 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 maximum 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 propeller 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

PROPELLER UPBLAST IO&M B51071-0056

Page 7

AUD / EUD / TUD Parts List

Parts Numbers

AUD/EUD/TUD

Part

No.

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

1 Damper Stop Damper Stop Damper Stop 2 Rubber Bumper(2) Rubber Bumper(2) Rubber Bumper(2) 3 Wind Band Wind Band Wind Band

Cast Aluminum

5 Power Assembly Power Assembly Power Assembly 6 Motor Plate Motor Plate Motor Plate

8 Motor Motor Motor

10 Damper Assembly Damper Assembly Damper Assembly

Propeller

Lower Drum

Assembly

Damper Rubber

Extr usion (2)

Description

Aluminum Propeller Tri t o n® Propeller

Lower Drum

Assembly

Damper Rubber

Extr usion (2)

Lower Drum

Assembly

Damper Rubber

Extr usion (2)

SUB/SUBH/TUB with Smoke Control

Part

No.

SUB/TUB (Sizes 24 - 72) SUBH (Sizes 24 - 72)

1 Damper Backstop Damper Backstop Damper Backstop 2 Rubber Bumper (2) Rubber Bumper (2) Rubber Bumper (2) 3 Damper Rubber Extrusion Damper Rubber Extrusion Damper Rubber Extrusion

Weather Cover Rubber

5 Motor Plate Motor Plate Motor Plate 6 Weather Cover Weather Cover Weather Cover 7 Motor Motor Motor 8 Driver 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 Tr i t o n® Propeller

19 Wind Band Assembly Wind Band Assembly Wind Band Assembly 20 Damper Assembly Damper Assembly Damper Assembly

Extrusion

Spring Loaded Damper

(optional)

Description

TUB with Smoke Control

(Sizes 24 - 72)

Weather Cover Rubber

Extrusion

Spring Loaded Damper Spring Loaded Damper

Weather Cover Rubber

Extrusion

7PROPELLER UPBLAST IO&M B51071-005

Page 8

EUB/AUB

EUB Sizes 24–72

Part

No.

1 Damper Backstop Damper Backstop 2 Rubber Bumper (2) Rubber Bumper (2) 3 Damper Rubber Extrusion (2) Damper Rubber Extrusion (2) 4 Shaft Shaft 5 Weather Cover Rubber Extrusion Weather Cover Rubber Extrusion 6 Motor Plate Motor Plate 7 Weather Cover Weather Cover 8 Motor Motor

9 Driver 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 (Sizes 24 - 72) AUB (Sizes 24 - 48)

Description

AUB Sizes 24–48

PROPELLER UPBLAST IO&M B51071-0058

Page 9

LEU Parts List

LXUL/LXUM

Part

No.

10 Belt Belt

11 Driven Sheave Driven Sheave 12 - Locking Collar 13 Bearing (2) Bearing (2) 14 Shaft Shaft 15 Rain Gutter Rain Gutter

LXUL/LXUM Description

Size 20-36 Size 42-60

Damper Stop

Bracket (2)

Damper Stop

Channel

4 Windband Windband

6 Base Weldment Base Weldment 7 Motor Plate Motor Plate 8 Motor Motor 9 Drive Sheave Drive Sheave

Damper

Bumper (2)

X.STREAM

Propeller

Damper Door

(2)

Damper Hinge

(4)

Damper Pivot

Rod

Damper Pivot

Bracket

Damper Stop

Bracket (2)

Damper Stop

Channel

Damper

Bumper (2)

X.STREAM

Propeller

Damper Door

(2)

Damper Hinge

(8)

Damper Pivot

Rod

Damper Pivot

Bracket

LEU

Part

No.

Damper Stop Bracket

3 Damper Bumper (2) Damper Bumper (2) 4 Windband Windband 5 Extruded Propeller Extruded Propeller 6 Base Weldment Base Weldment 7 Motor Plate Motor Plate 8 Motor Motor

9 Drive 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

Damper Stop

Damper Pivot

Brackets (2)

LEU Description

Size 20-36 Size 42-60

(2)

Channel

Damper Stop Bracket

(2)

Damper Stop

Channel

Damper Pivot

Brackets (2)

9PROPELLER UPBLAST IO&M B51071-005

Page 10

LTU

1716

Part No. Description

1 Damper Stop Bracket 2 Damper Stop Channel 3 Damper Bumper (2) 4 Windband 5 TRITON® Propeller 6 Base Weldment 7 Motor Plate 8 Motor

9 Drive 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

LXULMO/LXUMMO

12 11

Part

No.

LXULMO/LXUMMO With Smoke Control

1 Damper Stop Bracket Damper Stop Bracket 2 Damper Stop Channel Damper Stop Channel 3 Damper Bumper (2) Damper Bumper (2) 4 Windband Windband

X.STREAM Series

6 Shaft Shaft 7 Bearing Cover Bearing Cover 8 Bearings (2) Bearings (2)

9 Driven 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

Propeller

Description

X.STREAM Series

Propeller

PROPELLER UPBLAST IO&M B51071-00510

Page 11

LTUMO

12 11

Part

No.

1 Damper Stop Bracket Damper Stop Bracket 2 Damper Stop Channel Damper Stop Channel 3 Damper Bumper (2) Damper Bumper (2) 4 Windband Windband 5 TRITON® Propeller TRITON® Propeller 6 Shaft Shaft 7 Bearing Cover Bearing Cover 8 Bearings (2) Bearings (2) 9 Driven 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 M O With Smoke Control

Description

LEUMO

12 11

Part No. Description

1 Damper Stop Bracket 2 Damper Stop Channel 3 Damper Bumper (2) 4 Windband 5 E Series Propeller 6 Shaft 7 Bearing Cover 8 Bearings (2)

9 Driven 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

11PROPELLER UPBLAST IO&M B51071-005

Page 12

AI Upblast

Part No. Description

1 Damper Stop Assembly

2 Damper Assembly 3 Lifting Lugs 4 Windband 5 AI Propeller

6 AI Vertical Housing 7 Curb Cap 8 Motor

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

original purchaser placing the fan in ser vice specically the right. You may have other legal rights which vary from state to state.

Corporate O󰀩ces: 2015 E. Dale St. Springeld, MO 65803 Phone 417-869-6474 | Fax 417-862-3820 | lorencook.com

June 2019

PROPELLER UPBLAST IO&M B51071-00512