Cook Jetstream User manual

1JET STREAM IO&M P0000313-000

JetStream

Tube Axial Fans/Jet Tunnel Fan

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

Receiving and Inspection

Carefully inspect the fan and accessories for any dam-age

and shortage immediately upon receipt of the fan.

• Turn the propeller by hand to ensure it turns freely and does

not bind

• Record on the Delivery Receipt any visible sign of damage

Handling

Lift JetStream fans by placing a sling around the fan hous-

ing or through lifting eyes.

NOTICE! Never lift by the motor or inlet/outlet silencers.

Storage

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

tion, rotate the propeller several revolutions every three to ve

days. This keeps a coating of grease on all internal bearing

parts. Block propeller to prevent natural rotation and store it in

its original shipping crate and protect it from dust, debris and

weather.

Rotating Parts & Electrical Shock Hazard:

Fans should be installed and serviced by qualied person-

nel 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 com-

plete 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 ap-

plicable local codes. Ensure the power supply (voltage, fre-

quency and current carrying capacity of wires) is in accor-

dance with the motor nameplate.

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 se-

rious injury or death.

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

impeller can rotate, which is referred to as windmilling. Wind-

milling will cause hazardous conditions due to unexpected

rotation of components. Impellers should be blocked in posi-

tion 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 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

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 environ-

mental 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 engi-

neer of record will be responsible for prescribing the correct

attachment based on construction materials, code require-

ments and environmental e󰀨ects specic to the installation.

This publication contains the installation, operation and

maintenance instructions for standard unit of the JetStream

Tube Axial Fans/Jet Tunnel Fan.

Carefully read this publication and any

supplemental documents prior to any

installation or maintenance procedure.

Loren Cook catalog, JetStream, provides additional infor-

mation 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.

JetStream

2JET STREAM I0&M P0000313-000

Ceiling Mounted Spring Isolator Rubber-in-Shear Ceiling Isolator

Figure 2 - Ceiling Mount Isolators

Wiring Installation

Some fractional motors have to be removed in order to make

the connection with the terminal box at the end of the motor.

NOTICE! Follow the wiring diagram in the disconnect

switch and the wiring diagram provided with the mo-

tor. 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).

Direct Drive Fans

1. Pull the wire into the motor wiring box. Restrain the wire to

prevent it from being pulled into the shaft.

2. For nal connections, follow the wiring diagram provided

on the motor.

Final Installation Steps

1. Inspect fasteners and setscrews, particularly fan mount-

ing and then tighten according to Recommended Torque

for Setscrews/Bolts.

2. Inspect for correct voltage with voltmeter.

3. Ensure all silencers, wire guards and accessories are

installed.

4. Check the fan to see if it is a directional or reversible prop.

5. For directional fans: Test the fan to be sure the rotation

is the same as indicated by the arrow marked Rotation.

For Reversible fans: Test the fan to ensure proper rotation

for the correct airow direction.

NOTICE! Do not allow the fan to run in the wrong direc-

tion. 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 pos-

sible to interchange two leads at this location so that

the fan is operating in the correct direction.

Operation

Pre-Start Checks

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

2. Inspect fasteners and setscrews, particularly those used

for mounting the unit, and tighten if necessary.

3. Inspect motor wiring.

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

housing.

5. Ensure fan, silencers, and wire guard are clean and free

of debris.

6. For directional fans: Test the fan to be sure the rotation

is the same as indicated by the arrow marked Rotation.

For Reversible fans: Test the fan to ensure proper rotation

for the correct airow direction.Restore power to unit.

Installation

Isolation Installation

To help prevent vibration and noise from being transferred to

the building, isolators are recommended.

Floor Mounted Spring Isolators

1. Mount fan on isolation base or rails (if supplied).

2. Elevate fan (or isolation base) to operating height and in-

sert blocks to hold in position.

3. Position isolators under the fan and vertically align by in-

serting leveling bolt through mounting holes in the fan or

the base. The isolator must be installed on a level surface.

4. Adjust the isolators by turning the leveling nut counter-

clockwise several turns at a time alternately on each iso-

lator until the fan weight is transferred onto the isolators

and the fan raises uniformly o󰀨 the blocks. Then remove

the blocks.

5. Turn lock nut onto leveling bolt and secure rmly in place

against the top of the mounting ange or frame.

6. Secure isolators to mounting surface.

Spring Isolator Rubber-in-Shear Isolator

Figure 1 - Floor Mount Isolators

Floor Mounted Rubber-In-Shear (RIS) Isolators

1. Mount fan on isolation base or rails (if supplied).

2. Elevate fan to provide room to insert isolators between the

fan and foundation and block in position.

3. Position isolators under fan and secure bolts.

4. Remove blocks and allow fan to rest on oor. Isolators

must be installed on a level surface (leveling should not

be required).

5. Secure isolators to mounting surface.

Ceiling Mounted Spring and Rubber-in-Shear (RIS)Isola-

tors

1. Elevate fan to operating height and brace.

2. Attach threaded rod to overhead support structure directly

above each mounting hole. Rod should extend to within a

few feet of fan.

3. Attach isolator to end of threaded rod using a nut on each

side of isolator bracket.

4. Insert another section of threaded rod through the fan

mounting hole and isolator.

5. Attach two nuts to threaded rod in isolator.

6. Place adjusting nut and locking nut on threaded rod near

fan mounting bracket.

7. Alternately rotate adjusting nut at each mounting location

until the fan weight is uniformly transferred to the isolators.

Remove bracing.

3JET STREAM IO&M P0000313-000

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 - -

19/16” 5600 6400 - -

Start-Up

Ensure free rotation of the prop. Turn on the fan. In variable

speed units, set fan to its lowest speed and inspect for the fol-

lowing:

• Direction of rotation

• Excessive vibration

• Unusual noise

• Bearing noise

• Improper motor amperage or voltage

NOTICE! 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 opera-

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

the following:

30 Minute Interval

Inspect bolts, setscrews and motor mounting bolts. Adjust

and tighten as necessary.

8 Hour Interval

Inspect bolts, setscrews and motor mounting bolts. Adjust

and tighten as necessary.

24 Hour Interval

Inspect bolts, setscrews and motor mounting bolts. Adjust

and tighten as necessary.

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

Low Speed

High Speed

Motor

Line

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

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

two line leads.

4JET STREAM I0&M P0000313-000

3. Remove the propeller retaining plate from the motor shaft.

4. Remove the propeller from the motor shaft.

5. Unhook the motor leads.

6. Remove motor from the motor mounting plate. Inspect all

hardware and replace worn components.

7. Attach the replacement motor to the motor mounting plate.

Tighten hold-down bolts to the proper torque.

8. See motor label for correct motor wiring.

9. Replace propeller on motor shaft in the location initially

marked in step 2.

10. Check for proper rotation. To reverse, see previous wiring

diagrams.

11. Replace the retaining plate and propeller side silencer that

was initially removed to gain access to the motor.

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.

Motor 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 suf-

cient padding on the shaft and propeller. This pre-vents 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

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 ex-

cessive. Excessive build-up can cause imbalance and failure

of the propeller. Always clean the entire propeller as partial

cleaning will cause imbalance and fan failure.

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 for cleanliness and clean as necessary. Removing

dust and grease on motor housing assures proper motor

cooling and proper air performance. Clean using com-

pressed air and/or dry rags. No liquid/solvent cleaners are

to be used.

• Inspect Inlet/outlet guards and the silencers. Remove any

build up or debris.

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

Severe 1 yr. 3 months 1 yrs. 3 months 6 months 1 month

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.

The above intervals should be reduced to half for vertical

shaft installations.

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.

Motor Replacement

1. Remove the propeller side silencer to gain access to the

motor.

2. Mark the location of the propeller in the housing.

5JET STREAM IO&M P0000313-000

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 rotation label

• Poor fan inlet conditions.

• Improper propeller alignment

Excessive Vibration and Noise:

• Damaged or unbalance propeller

• Speed too high

• Incorrect direction of rotation. Make sure the fan rotates in

same direction as the arrows on the rotation label

• 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

Parts List

JetStream

Part

No. Description

1Inlet/Outlet Guard

2Inlet/Outlet Silencer

3Housing

4Cast Aluminum

Propeller

5Prop Retaining Plate

6Bushing

7Motor

6JET STREAM I0&M P0000313-000

or Replacement

(This page is intentionally left black)

7JET STREAM IO&M P0000313-000

or Replacement

(This page is intentionally left black)

8JET STREAM I0&M P0000313-000

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 com-

pany 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 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 specically the right. You

may have other legal rights which vary from state to state. For fans provided with motors, the motor manufacturer warrants motors for a designated period stated

in the manufacturer’s warranty. Warranty periods vary from manufacturer to manufacturer. Should motors furnished by Loren Cook Company prove defective dur-

ing the designated period, they should be returned to the nearest authorized motor service station. Loren Cook Company will not be responsible for any removal

or installation costs.

Corporate O󰀩ces: 2015 E. Dale St. Springeld, MO 65803

Phone 417-869-6474 | Fax 417-862-3820 | lorencook.com

August 2021

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