Loren Cook HEF-D Installation Manual

Page 1

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.

H-Series

WARNING

This unit has rotating parts. Safety precautions should be exercised at all times dur ing ins tallat ion, operation, and maintenance. ALWAYS disconnect power prior to working on fan.

Hooded Propeller Roof Fans

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation, operation

and maintenance procedures for standard units of the

H-Series - Hooded Propeller Roof Fans.

•HEE/HES •HXF

•HEF •HEE-D/HES-D

•HER •HEF-D

•HXE/HXS •HER-D

Carefully read this publication prior to any installa-

tion or maintenance procedure.

Loren Cook catalog, H-Series Belt Drive and H-Series

Direct Drive, provide additional information describing the

equipment, fan performance, available accessories and specification data.

For additional safety inform ation, refer to AM CA publication 410-96, Safety Practices for Users and Installers of Industrial and Commercial Fans.

All of the publications listed above can be obtained from Loren Cook Company by phoning 417/869-64 74, exten sion 166; by FAX at 417/832-9431; or by e-mail at info@lorencook.com.

For information and instructions on special equipment, contact Loren Cook Company at 417/869-6474.

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.

Handling

Lift the fan by the base or by the shipping carton. Never

lift by the shaft, motor or housing.

If your fan has a special protective finish, 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 damaged during handling, it will require rebalancing.

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 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 damp-

ers (if supplied) to keep a coating of grease on all internal bearing parts.

• Periodically inspect the fan to prevent damaging condi-

tions.

• Block propeller to prevent natural rotation.

• Cover the unit with some type of weath er cover to pre-

vent moisture, corrosion, dirt or dust accumulation.

Installation

Damper Installation

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

a. Place the damper inside the curb. Ensure the damper

will open freely for the correct direction of the airflow. b. Secure to curb at the damper shelf. c. Drill a hole in the curb shelf for conduit needed for

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

move freely. Dampers should be released from full

open position to check for proper closing.

Motor Installation

If your fan is a direct drive (model HEE-D, HES-D, HEF-D

or HER-D), proceed to Wiring Installation.

Storage

If the fan is stored for any length of time prior to installa-

tion, store it in its original shipping crate and protec t it from

H-Series

Page 2

Fan

Motor

Damper

Motor*

Second Damper

Motor

ransformer**

L3 L2 L1

1 728

3 9

L2L

456

789

L2L

Low Voltage

208/230 Volts

High Voltage

460 Volts

3 Phase, 9 Lead Motor Y-Connection

789 456

Low Voltage

208/230 Volts

High Voltage

460 Volts

8 2

9 3

L1L

3 Phase, 9 Lead Motor Delta-Connection

Wiring Diagrams

Single Speed, Single Phase Motor

Ground A

T-1

T-4

Ground B

Line L

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

To reverse, interchange any 2 line leads.

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

Ground A

T-1 T-4

Ground B

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

High Speed

Low Speed

Line

Together

Motor

Line

Motor

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

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

Ground A

T-5

J-10

Ground B

Link A Link B

Low Voltage

Line

T-5

J-10

Ground B

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

Ground A

Link A & B

High Voltage

Line

Low Speed

Motor

T T T

11 12 13

High Speed High Speed High Speed

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

and T2. Both Speeds-interchange any 2

Typical Damper Motor Schematic

Low SpeedHigh Speed

2 3

4 5 6

Open

Line

L L L

1 2

Line

To prevent damage to the fan during shipping, motors 5 HP and larger, and extremely heavy motors (cast iron or severe duty) are shipped loose and must be fie ld mounted.

The motor should be mounted in order that the motor plate is between the fan shaft and the motor shaft.

a. Remove the motor plate mounting bolts and the moto r

plate.

b. Remove the motor mounting bolts from the motor

plate.

c. Mount the motor to the motor plate aligning to the

appropriate holes.

d. Place the motor plate on the power assembly and rein -

stall the mounting bolts.

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,

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.

which dissipates after the fan is operating at full capacity. If belt tension is too tight or too loose, lost efficiency and damage can occur.

Do not change the pulley pitch diameter to change ten-

sion. The change will result in a different fan speed.

a. Loosen the motor plate adjustment nuts on motor b ase

and move motor plate in order that the belts can easily slip into the grooves on the pulleys. Never pry, roll, or force the belts over the rim of the pulley.

b. Adjust the 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 nuts in place. d. Ensure pulleys are properly aligned. Refer to Figure 2.

Page 3

Pulley Alignment

1 foot

1/4 inch

Figure 1

Figure 2

Tolerance

Center Distance

Maximum

Gap

Up thru 12” 1/16”

12” up through 48 1/8”

Over 48” 1/4”

Personal Safety

Disconnect switches are recommended. Place the disconnect switch near the fan in order that the power can be swiftly cut off in ca se of an emerge ncy, and in order that maintenance personnel are provided complete control of the power source.

Filter

Filter Installation Detail

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

OFFSET ANGULAR OFFSET/ANGULAR

ference 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 Electrical Code, NFPA 70. Ensure the power supply

Figure 3

(voltage, frequency, and current carrying capacity of wires) is in accordance with the motor nameplate. Refer to the Wiring Diagrams, previous page.

Lock off 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.

CENTER

DISTANCE

(CD)

GAP

X Y

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

Figure 4

GAP

Follow the wiring diagram in the di sc o nn e ct swi tc h 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).

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 the problem.

Place fan over roof opening. Secure the fan with lag

screws, anchor bolts, or other suitable fasteners.

Hood Assembly

Hoods for some non-filtered fans (size 54 and larger) and some filtered fans (size 48 or larger) require field assembly . Assembly is accomplished using 1/2” and 9/16” socket wrenches. Line-up punches and hand clamps will speed up the assembly. Figure 4 shows the components used to assembly the hood.

a. Place the hood halves (A) onto the hood sup-

ports (D). Line up the hood flanges an d bolt the flanges of the hood ends (G) together. The top caps (B) must be interlocked for the flanges to meet correctly.

b. Go under the hood and bolt the hood (angle

flange) to the hood supports (D) at the four overlapping locations.

c. Install the two perimeter angles (C), that were

shipped loose, inside each end of the hood.

d. If there is a gap between the top cap edges,

loosen the top cap bolts. Install a bolt in each end of the top cap flange to pull the two top caps together. Tighten the top cap bolts.

Page 4

Filtered Fans

Filter

Schedule

Type 2

Type 1

Recommended Torque for Setscrews/Bolts (IN/LB.)

Setscrews

Hold Down Bolts

Size

Key Hex

Across

Flats

Recommended Torque

Inch-lbs.

Min. Max. Size

Wrench Torque

(inch-lbs)

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” 348 384 7/8”-9 2040

1/2” 1/4” 504 600 1”-8 3000 5/8” 5/16” 1104 1200 1-1/8”-7 4200 3/4” 3/8” 1440 1800 1-1/4”-7 6000

WARNING Disconnect power before checking and cleaning filters. Inadvertent operation of the fan cou ld pull objects from the roof into the propeller.

a. Place the two long filter retainers (E) --four on size 60--

and the two short filter retainers (F) on top of the base and bolt the pieces together.

b. Bolt the long filter retainers (E) to the perimeter angles

c. Install filters according to the filter schedule. Refer to

Filter Installation Detail, below . In sert edge of filters into the filter retainer (E), swing filter into position and flip the filter holding clip into position.

Unit Type 1 Type 2 Size Length x Width No. Req’d Length x Width No. Req’d

20 14 x 14” 4 14 x 18-7/8” 6 24 18-1/4” x 30-1/8” 2 18-1/4” x 33-1/4” 4 30 20-7/16” x 18-1/16” 4 20-7/16” x 25-13/16” 6 36 22-1/4” x 21-1/16” 4 22-1/4” x 29-5/32 6 42 24-1/16” x 29-1/2” 4 26-7/8” x 19-1/4” 8 48 27” x 27” 4 27” x 27 8 54 29-1/8” x 20” 6 29-1/8” x 23-5/8” 10 60 37-11/16” x 21-7/8 6 26” x 28-5/16” 10

Final Installation Steps

a. Inspect fasteners and setscrews, particularly fan

mounting and bearing fasteners, and tighten ac cording to the recommended torque shown in the table, Rec-

ommended Torque for Setscrews/Bolts. b. Inspect for correct voltage with voltmeter. c. Ensure all accessories are installed.

d. Test the fan to be sure the rotation is the same as indi-

cated 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 locat ion so tha t the fan is operating in the correct direction.

Operation

Pre-Start Checks

a. Lock out all the primary and secondary power sources. b. Inspect fasteners and setscrews, particularly those

used for mounting the fan, and tighten if necessary.

c. Inspect belt tension and pulley alignment. (Remember,

if belt tension is correct, a loud squeal occurs as the fan

increases to full power.) d. Inspect motor wiring. e. Ensure the belt touches only the pulleys.

f. Rotate the propeller to ensure it does not rub again st

the venturi.

g. Ensure fan and ductwork are clean and free of debris. h. Test the fan to ensure the rotation of the propeller is

the same as indicated by the rotation label. i. Close and secure all access doors. j. Restore power to unit.

Start Up

Turn the fan on. In variable speed fans, 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 off the fan. Lock out all electrical power and check for the cause of the trouble. Refer to Troubleshooting, page 6.

Inspection

Inspection of the fan should be conducted at the first 30 minute, 8 hour and 24 hour intervals of satisfactory oper a-

tion. During the inspections, stop the fan and i nspect as per the chart 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.

Filters

Filter inspection and cleaning intervals can vary from once a week to twice per year depending on contaminant present and acceptable pressure drops across the filter. Under most conditions filters may be cleaned with hot water and a mild soap solution (such as dish washing liquid) or steam. Some caustic cleaners will damage the filter. If in doubt, please consult the factory for a compatibility list.

Page 5

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

High pressure spray washers should be limited to 2,000psi operating pressure. Every attempt should be made to remove the contaminants from the filter in a “backwash” flow (note airflow arrow on the filter frame). Once the filter is dry, it may be returned to the appropriate filter racks in the same orientation (airflow direction) as they were removed.

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 (airborne abrasives) should be inspected every three months. Clean the propeller and air inlet s if material build-up is excessive. Excessive build-up can cause imbalance and failure of the propeller.

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

It is recommended the following inspections be conducted 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 Pulley Installation, page 2.

• Bearings should be inspected as recomme nde d in th e

Conditions Chart.

• Inspect for cleanliness. Clean exterior surfaces only.

Removing dust and grease on motor housing assures proper motor cooling.

Fan Bearings

The fan bearings are provided prelubricated. Any specialized lubrication instructions on fan labels supercedes 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 intermittent 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 and/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.

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 rpm units use

a prelubricated sleeve bearing that has a oil saturated wicking material surrounding it. The initial factory lubrication is ade-

Conditions Chart

RPM Temp °F Greasing Interval

-30 to 120 6 months

Up to 1000

1000 to 3000

Over 3000

Any Speed < -30 Consult Factory

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

Any Speed > 200 1 week

For moist or otherwise contaminated installations; divide the interval by a

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.

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

quate for up to 10 years of operation under normal conditions. 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.

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- ye ar per io d, contact your local Loren Cook representative or your nearest authorized electric motor service representative.

Page 6

Changing Shaft Speed

All belt driven H-Series fans with motors up to and including 5HP are equipped with variable pitch pulleys. To change the fan speed, perform the 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.

Maximum RPM

HXEL, HXSL, HXFL

Size

20 1276 20 1462 24 1126 24 1400 30 932 30 1184 36 720 36 864 42 610 42 718 48 516 48 598 54 478 54 522 60 450 60 539

Maximum

RPM

HXEM, HXSM, HXFM

Size

Maximum

RPM

Maximum RPM

HEE

Maximum

Size

RPM

24 1675 24 1630 24 1635 24 1635 30 1295 30 1330 30 1330 30 1325 36 1125 36 1165 36 1160 36 1145 42 880 42 885 42 880 42 920 48 822 48 830 48 816 48 818 54 776 54 742 54 735 54 748 60 636 60 642 60 634 60 642

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.

HES

Size

Maximum

RPM

HEF Size

Maximum

RPM

HER Size

Maximum

RPM

Pulley and Belt Replacement

a. Clean the motor and fan shafts.

b. Loosen the motor plate mounting bolts to relieve the

belt tension. Remove the belt.

c. Loosen the pulley setscrews and remove the pulleys

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 shaf t. The pulley will need replacement if it is more than

0.020 inch out of true.

Pulley and Belt Replacement continued d. Clean the bores of the pulleys and place a light coat of

oil on the bores.

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

f. 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.

g. After the pulleys have been correctly placed back onto

their shafts, tighten the pulley setscrews.

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

belts to the proper tension as described in Belt and Pul- ley Installation, page 2.

Bearing Replacement

The fan bearings are pillow block ball bearings. a. Remove the top cap or hood as necessary to gain

access to the fan.

b. Loosen the motor plate mounting bolts and remo ve the

drive belts. c. Remove the propeller from the shaft. d. Remove the four (4) bearing hold-down bolts and then

remove the shaft, bearings, and driven sheave from the

unit as an assembly. e. Measure and record the location of the bearings and

sheave on the shaft. This will aid the reassembly.

f. Remove the anti-corrosion coating from the shaft with

a suitable degreaser and then remove the pulley from the shaft.

g. Remove the bearing from the shaft using a bearing

puller. h. Install the pulley in the correct location on the shaft

Secure the bearing hold-down bolts, but do not fully

tighten.

i. Align the setscrews on the bearings and tighten one

setscrew on each bearing.

j. Rotate the shaft to allow the bearing outer rings to find

their center of free movement.

k. Install the propeller on the shaft and adjust the bearing

position to center the propeller in the opening.

l. Tighten the hold-down bolts to the proper torque. Refer

to Torque Chart, page 4 .

m. Turn the shaft by ha nd. Resistance should be the same

as it was before the hold-down bolts were fully tight-

ened. n. Tighten the bearing setscrews to the specified torque. o. Install the pulley and adjust the belt tension. p. Reassemble the fan.

After 24 hours of continuous operation, tighten the setscrews 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 set screw 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 finished 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 sufficient 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.

Page 7

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.

HEE/HES/HER Parts List

HXEL/HXEM/HXSL/HXSM Parts List

Part

No.

1 — — Hood Support Angle(2) 2 Motor Motor Motor

3 4 Motor Plate Motor Plate Motor Plate 5 Belts Belts Belts 6 — — Center Post (2) 7 Fan Sheave Fan Sheave Fan Sheave 8 Shaft Shaft Shaft

9 Topcap Topcap Topcap 10 Corner Post (4) Corner Post (4) Corner Post (4) 11 Hood End Hood End Hood End 12 Hood Side Hood Side Hood Side 13 Perimeter Angle (4) Perimeter Angle (4) Perimeter Angle (4) 14 Bearings Bearings Bearings 15 HXEM/HXSM/HXEL/HXSL - X-Stream Propeller:

16 Base Assembly: Power Assembly 17 Supply Venturi Supply Venturi Supply Venturi

HEF, HES, HEE, HER, HXEL, HXEM, HXSL, HXSM

20-30 36-48 54-72

Motor Sheave Motor Sheave Motor Sheave

HEE/HES/HER - Extruded Propeller

HEE-D/HES-D/HER-D Parts List

Part

No.

1 — — Hood Support Angle (2) 2 Motor Motor Motor 3 Motor Plate 4— 5 Topcap 6 Corner Post (4) 7 Hood End 8 Hood Side

9 Perimeter Angle (4) 10 Extruded Propeller 11 Base Assembly/

12 Supply Venturi

20-30 36-48 54-60

Power Assembly

HEE-D/HES-D/HER-D

Motor Plate

—

Topcap

Corner Post (4)

Hood End

Hood Side

Perimeter Angle (4)

Extruded Propeller

Base Assembly/

Power Assembly

Supply Venturi

Motor Plate

Center Post (2)

Topcap

Corner Post (4)

Hood End

Hood Side

Perimeter Angle (4)

Extruded Propeller

Base Assembly/

Power Assembly

Supply Venturi

Page 8

16 14

HEF Parts List

HXFL/HXFM Parts List

Part

No.

24-30 36-42 48 54 60

1 — Hood

HEF, HXFL & HXFM

Hood Support Angle

Support Angle

2 Motor Motor Motor 3 Motor Sheave Motor Sheave Motor Sheave 4 Motor Plate Motor Plate Motor Plate 5 Belt Belt Belt 6 — — — Center Post 7 Fan Sheave Fan Sheave Fan Sheave 8 Shaft Shaft Shaft 9 Topcap Topcap Topcap

10 — Corner Post Corner Post

11 Hood End Hood End Hood End 12 Hood Side Hood Side Hood Side 13 Perimeter Angle (4) Perimeter Angle (4) Perimeter Angle (4) 14 Filter Rack (2) Filter Rack (2) Filter Rack (2) 15 Power Assembly Power Assembly Power Assembly 16 Bearings Bearings Bearings 17 HEF - Extruded Propeller:

HXFL/HXFM - X-Stream Propeller

18 Base Assembly Base Assembly Base Assembly 19 Supply Venturi Supply Venturi Supply Venturi 20 Filter Crossmember Filter Crossmember Filter Crossmember 21 Filter* Filter* Filter*

* See Filter Schedule on page 4

HEF-D Parts List

Part

No.

20-30 36-42 48 54 60

HEF-D

1 — Hood

Hood Support Angle

Support Angle 2 Motor Motor Motor 3 Motor Plate Motor Plate Motor Plate 4— — —Center Post 5 Topcap Topcap Topcap 6 — Corner Post (4) Corner Post (4) 7 Hood End Hood End Hood End 8 Hood Side Hood Side Hood Side 9 Perimeter Angle (4) Perimeter Angle (4) Perimeter Angle (4)

10 Filter Rack (2) Filter Rack (2) Filter Rack (2)

11 Power Assembly Power Assembly Power Assembly

12 Extruded

Propeller

Extruded Propeller

Extruded

Propeller 13 Base Assembly Base Assembly Base Assembly 14 Supply Venturi Supply Venturi Supply Venturi 15 Filter Crossmember Filter Crossmember Filter Crossmember 16 Filter* Filter* Filter*

* See Filter Schedule on page 4

Limited Warranty

Loren Cook Company warrants that your Loren Cook fan was manufactured free of defects in mat eri als and workmanship, to th e exte nt stated he rein. For a p eriod 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 use d other than for the uses described in the company manual. This warranty does not cover defe cts 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 compla int, in writing , as to t he manner in which your claim will be han dled. If you are ent itled to wa rranty 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 va ry from state to state.

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

lorencook.com

H-Series IOM - November 2007