COOK TMX User manual

1TMX IO&M B51108-003
®
TMX
Mixed Flow Inline
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 wheel by hand to ensure it turns freely and does
not bind
• Inspect inlet vane dampers (if supplied) for free operation
of all moving parts
• Record on the Delivery Receipt any visible sign of damage
Handling
Lift the fan by lifting lugs.
NOTICE! Never lift by the shaft, motor or housing.
TMX
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
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 emer-
gency and in order that maintenance personnel are pro-
vided 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. Ensure the power supply (voltage,
frequency and current carrying capacity of wires) is in ac-
cordance with the motor nameplate.
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.
When air is allowed to move through a non-powered fan,
the impeller can rotate, which is referred to as windmill-
ing. 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 con-
tact with personnel, tools or clothing.
Failure to follow these instructions could result in death or
serious injury.
This publication contains the installation, operation and
maintenance instructions for standard units of the TMX:
Mixed Flow Inline.
Carefully read this publication and any
supplemental documents prior to any
installation or maintenance procedure.
Loren Cook Product Guide, TMX, provides additional in-
formation describing the equipment, fan performance, and
available accessories.
For additional safety information, refer to AMCA Publi-
cation 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,
contact Loren Cook Company at 417-869-6474.

2TMX IO&M B51108-003
Ceiling Mounted Spring and Rubber-in-Shear (RIS)
Isolators
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.
Ceiling Mounted Spring Isolator Rubber-in-Shear Ceiling Isolator
Figure 2 - Ceiling Mount Isolators
Duct and Damper Installation
E󰀩cient fan performance relies on the proper installation of
inlet and discharge ducts as well as dampers. Be sure your fan
conforms to the following guidelines and allows three duct diam-
eter of straight duct before placing an elbow or damper. Clear-
ance is also required on the inlet and outlet for maintenance
such as pulley or bearing replacement.
Non-Ducted Inlet Clearance
If your fan has an open inlet (no duct work), the fan must
be placed one e󰀨ective wheel diameter away from walls
and bulkheads.
MIN
1 DIA
Non-ducted Inlet Clearance
Free Discharge
Avoid a free discharge into the plenum. This will result in
lost e󰀩ciency because it doesn’t allow for a static regain.
Correct
Incorrect
Free Discharge
Storage
If the fan is stored for any length of time prior to installa-
tion, completely ll the bearings with grease or moisture-
inhibiting oil (refer to Lubrication, page 6). Store the fan in its
original crate and protect it from dust, debris and weather.
• Cover the inlet, and outlet opening to prevent the accu-
mulation of dirt and moisture in the housing
• Periodically rotate the wheel and operate inlet vane
dampers (if supplied) to keep a coating of grease on all
internal bearing parts
• Periodically inspect the unit to prevent damaging
conditions
Installation
TMX can be mounted horizontally or vertically to a oor
or a ceiling in various motor positions and discharges.
Most motors are shipped mounted on the fans with belts
and drives installed. However, extremely heavy motors are
shipped separately, and some motors are shipped sepa-
rately due to height limitations. These motors and drives
will require eld installation.
NOTICE! Although a certain amount of vibration
is inherent in operating fans, extreme vibration is
a serious problem that may cause structural and
mechanical failure.
Isolation Installation
To help prevent vibration and noise from being trans-
ferred 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
insert blocks to hold in position.
3. Position isolators under the fan and vertically align by
inserting 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
isolator until the fan weight is transferred onto the iso-
lators 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.

3TMX IO&M B51108-003
Belt and Pulley Installation
Belt tension is determined by the sound the belts make
when the fan is rst started. The belts will produce a loud
squeal which dissipates after the fan is operating at full ca-
pacity. 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. This will result in a di󰀨erent fan speed.
1. Loosen motor plate adjustment bolts and move motor
plate in order that the belts can easily slip into grooves
on pulleys. Never pry, roll or force the belts over the
rim of the pulley.
2. 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 rm-
ly pressing the belt. Refer to Figure 3.
3. Lock the motor plate adjustment nuts in place.
4. Ensure pulleys are properly aligned. Refer to Figure 4.
Pulley Alignment
Pulley alignment is adjusted by loosening the motor pul-
ley setscrew and by moving the motor pulley on the motor
shaft.
Tolerance
Center
Distance
Max.
Gap
Up through 12” 1/16”
12” through 48” 1/8”
Over 48” 1/4”
OFFSET ANGULAR OFFSET/ANGULAR
A
W
X
Y
Z
B
CENTER
DISTANCE
(CD)
GAP GAP
Figure 4 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 di󰀨erence
in width. Figure 5 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.
Inlet Duct Turns
For ducted inlets, allow at least three e󰀨ective wheel di-
ameters between duct turns or elbows and the fan inlet.
Correct
Incorrect
MIN
3 DIA
Inlet Duct Turns
Discharge Duct Turns
Where possible, allow three duct diameters between duct
turns or elbows and the fan outlet.
Correct
Incorrect
MIN
3 DIA
Discharge Duct Turns
Wheel-to-Inlet Clearance
The correct wheel-to-inlet clearance is critical to proper
fan performance. This clearance should be veried before
initial start-up since rough handling during shipment could
cause a shift in fan components. Refer to wheel/inlet draw-
ing below for correct overlap.
Adjust the overlap by loosening the wheel hub and mov-
ing the wheel along the shaft to obtain the correct value.
Trim balance as necessary following procedure (0.150 in/
sec max).
A uniform radial gap (space between the edge of the
cone and the edge of the inlet) is obtained by loosening the
inlet cone bolts and repositioning the inlet cone.
Wheel/Inlet Overlap
SEE DETAIL A
D E TAI L A
OVERLAP
RADIAL
GAP
1 foot
1/4 inch
Figure 3
Figure 4
Size Overlap
(inches)
90 5/32
120 3/16
135 3/16
150 7/32
165 7/32
180 7/32
202 1/4
225 9/32
245 5/16
270 5/16
300 3/8
330 13/32

4TMX IO&M B51108-003
2 Speed, 2 Winding, Single Phase Motor
Ground A
Ground B
T-
1
T-
4
Low Speed
High Speed
L1
L2
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
L2
L1
Ground A
Link A
and B
L1
L2
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
1
7
2
8
3
9
L1L2L3
456
789
12 3
L1L2L3
Low Voltage
208/230 Volts
High Voltage
460 Volts
3 Phase, 9 Lead Motor
Y-Connection
7
1
6789
456
12 3
Low Voltage
208/230 V
olts
High V
oltage
460 Volts
8
2
4
9
3
5
L
1
L
3
L
2
L1L3
L2
3 Phase, 9 Lead Motor
Delta-Connection
To reverse, interchange any 2 line leads.
2 Speed, 1 Winding, 3 Phase Motor
Motor
1
2
3
4
5
6
Together
High Speed
Line
L1
L2
L
3
1
2
3
4
5
6
Open
Low Speed
Line
L1
L2
L3
Motor
To reverse, interchange any 2 line leads. Motors require
magnetic control.
2 Speed, 2 Winding, 3 Phase
L1
T
1
T
2
T
3
Low Speed
Low Speed
Low Speed
High Speed
High Speed
High Speed
Motor
T
13
T
12
T
11
L2Line
L3
To reverse:
High Speed - interchange leads T11 and T12.
Low Speed - interchange leads T1and T2.
Both Speeds - interchange any 2 line leads.
Wiring Installation
NOTICE! 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. To remove motor,
remove bolts securing motor base to power assembly. Do
not remove motor mounting bolts.
NOTICE! Follow the wiring diagram in the discon-
nect switch and the wiring diagram provided with
the motor. Correctly label the circuit on the main
power box and always identify a closed switch to
promote safety (i.e., red tape over a closed switch).
Use of Variable Frequency Drives
Motors
Motors that are to be operated using a Variable Fre-
quency Drive (VFD) must be VFD compatible. At a mini-
mum, this must be a Premium E󰀩ciency motor with Class
F insulation. Motors that are not supplied by Loren Cook
Company should have the recommendation of the motor
manufacturer for use with a VFD.
Grounding
The fan frame, motor and VFD must be connected to a
common earth ground to prevent transient voltages from
damaging rotating elements.
Wiring
Line reactors may be required to reduce over-voltage
spikes in the motors. The motor manufacturer should be
consulted for recommended line impedance and usage of
line reactors or lters if the lead length between the VFD
and the motor exceeds 10 ft (3m).
Fan
It is the responsibility of the installing body to perform
coast-down tests and identify any resonant frequencies
after the equipment is fully installed. These resonant fre-
quencies are to be removed from the operating range of
the fan by using the “skip frequency” function in the VFD
programming. Failure to remove resonant frequencies
from the operating range will decrease the operating life of
the fan and void the warranty.
Wiring Diagrams
Vari-Flow
For EC or VF see EC Motor Wiring supplement. For VF2 see
PM wiring supplement.
Single Speed, Single Phase Motor
T-
1
T-
4
Ground B
L2
L1
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.

5TMX IO&M B51108-003
Wheel Rotation
Test the fan to ensure the rotation of the wheel is the
same as indicated by the arrow marked Rotation.
115 and 230 Single Phase Motors
Fan wheel rotation is set correctly at the factory. Chang-
ing the rotation of this type of motor should only be at-
tempted by a qualied electrician.
208, 230 and 460 3 Phase Motors
These motors are electrically reversible by switching
two of the supply leads. For this reason, the rotation of
the fan cannot be restricted to one direction at the factory.
See Wiring Diagrams for specic information on reversing
wheel direction.
NOTICE! 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.
TMX
Airflow
NOTICE! Do not allow the fan airow to go in the
wrong direction.
Final Installation Steps
1. Inspect fasteners and setscrews, particularly fan
mounting and bearing fasteners then tighten accord-
ing to Recommended Torque for Setscrews/Bolts.
2. Inspect for correct voltage with a voltmeter.
3. Ensure all accessories are installed.
Operation
Pre-Start Checks
1. Lock out all the primary and secondary power sources.
2. Ensure fasteners and setscrews, particularly those
used for mounting the fan, are tightened.
3. Inspect belt tension and pulley alignment.
4. Inspect motor wiring.
5. Ensure belt touches only the pulley.
6. Ensure fan and ductwork are clean and free of debris.
7. Inspect wheel-to-inlet clearance. The correct wheel-
to-inlet clearance is critical to proper fan performance.
8. Close and secure all access doors.
9. Restore power to fan.
Start-Up
Turn on the fan. In variable speed units, set fan to its low-
est speed and inspect for the following:
• Direction of rotation
• Excessive vibration
• Unusual noise
• Bearing noise
• Improper belt alignment or tension (listen for squealing)
• Improper motor amperage or voltage
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 op-
eration. During the inspections, stop the fan and inspect
as per the Conditions Chart.
30 Minute Interval
Inspect bolts, setscrews and motor mounting bolts. Ad-
just 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.
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 - -
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.
Regular inspections are recommended for fans exhaust-
ing 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. Refer to
Belt and Pulley Installation (page 3)

6TMX IO&M B51108-003
For motors with provisions for relubrication, follow inter-
vals of the table below.
Relubrication Intervals
Service
Conditions
Nema Frame Size
184T and Smaller 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
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 verti-
cal shaft installations.
Motor Services
Should the motor prove defective within a one-year pe-
riod, contact your local Loren Cook representative or your
nearest authorized electric motor service representative.
Changing Shaft Speed
All belt driven fans with motors up to and including 5HP
are equipped with variable pitch pulleys. To change the fan
speed, perform the following:
1. Loosen setscrew on driver (motor) pulley and remove
key, if equipped.
2. 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.
3. 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.
Pulley and Belt Replacement
1. Loosen and remove belts by adjusting motor mounting
plate.
2. Remove pulleys from their respective shafts.
3. Clean the motor and fan shafts.
4. Clean bores of pulleys and coat bores with heavy oil.
5. Remove grease, rust or burrs from pulleys and shafts.
6. Remove burrs from shaft by sanding.
7. Place fan pulley on fan shaft and motor pulley on motor
shaft. Damage to pulleys can occur when excessive
force is used in placing the pulleys on their respective
shafts.
8. Tighten in place.
9. Install belts on pulleys and align as described in Belt
and Pulley Installation (page 3.)
Bearing Replacement
The fan bearings are pillow block ball bearings.
1. Loosen and remove belts by adjusting motor mount-
ing plate.
• Bearings should be inspected as recommended in the
Lubrication Conditions Chart (page 6)
• Inspect variable inlet vanes (if supplied) for freedom of
operation and excessive wear. The vane position should
agree with the position of the control arm. As the vari-
able inlet vanes close, the entering air should spin in the
same direction as the wheel
• Inspect springs and rubber isolators for deterioration
and replace as needed
• Inspect for cleanliness. Clean exterior surfaces only.
Removing dust and grease on motor housing assures
proper motor cooling. Removing dirt from the wheel and
housing prevents imbalance and damage
Lubrication
Fan Bearings
TMX bearings are lubricated through a grease tting on
the exterior of the fan housing and should be lubricated by
the schedule, Lubrication Conditions Chart.
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 burst
seals thus reducing bearing life.
Lubrication Conditions Chart
Fan
Class Fan Status Shaft Size Maximum Interval (operation hrs)
TMX Normal Conditions
(clean, dry & smooth) <1-1/2” 2000
In the event the bearing cannot be seen, use no more
than three injections with a hand-operated grease gun.
Before lubricating, the grease nipple and immediate
vicinity should be thoroughly cleaned without the use of
high pressure equipment. The grease should be supplied
slowly as the bearing rotates until fresh grease slips past
the seal. Excessive pressure should be avoided to prevent
seal damage.
Exceptions to the greasing interval chart:
• Periodic Applications (any break of one week or
more): it is recommended that full lubrication be per-
formed prior to each break in operation
• Higher Temperature: it is recommended to halve the in-
tervals for every 30°F increase in operating temperature
above 120°F not to exceed 180°F.
• Vertical Shaft: it is recommended that the intervals
should be halved
Loren Cook Company uses petroleum lubricant in a lithi-
um base. Other types of grease should not be used unless
the bearings and lines have been ushed clean. If another
type of grease is used, it should be a lithium-based grease
conforming to NLGI grade 2 consistency.
A 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.
Motor Bearings
Motors are provided with prelubricated bearings. Any lu-
brication instructions shown on the motor nameplate su-
persede instructions below.
Motor bearings without provisions for relubrication will
operate up to 10 years under normal conditions with no
maintenance.
Size
Maximum
RPM
Arr 9 Arr 4
90 3087 3087
120 2314 2314
135 2154 2154
150 1990 1990
165 1704 1943
180 1528 1528
202 1400 1400
225 1273 1273
245 1308 1308
270 1140 -
300 969 -
330 838 -

7TMX IO&M B51108-003
2. Remove the inner housing cover by removing the bolts
around the perimeter of the cover. Do not remove fan
sheave yet.
3. Remove inlet cone by removing attaching bolts/nuts
around perimeter of the inlet plate.
4. Remove wheel by loosening setscrews and sliding o󰀨
shaft.
5. Record the location of the fan sheave from end of
shaft, and remove the sheave.
6. Record the distance from the bearing to the end of the
shaft.
7. Loosen setscrews on bearings and remove shaft.
8. Remove bearings from bearing base and replace with
new ones, noting the exact location of each; do not
fully tighten base bolts.
9. Slide shaft through bearings until shaft protrudes the
same amount as measured above. Tapping the in-
ner race of each bearing with a soft driver may be re-
quired. Do not hammer the end of the shaft or the
bearing housing.
10. Tighten one setscrew on each bearing to half its speci-
ed torque (Page 5).
11. Rotate shaft to allow bearings to align themselves.
12. Replace wheel but do not tighten yet.
13. Replace inlet cone. Wheel may need to be moved to
allow proper alignment. Care should be taken to in-
sure that inlet cone is centered inside wheel before
and after tightening attaching bolts.
14. Slide wheel on shaft to achieve proper wheel/inlet
overlap and tighten wheel set screws. Refer to Wheel-
to-Inlet Clearance (page 3).
15. Tighten hold-down bolts to proper torque.
16. Turn the shaft by hand. Resistance should be the same
as it was before hold-down bolts were fully tightened.
17. Tighten all bearing setscrews to full specied torque.
18. Replace the sheave, align with motor sheave and ad-
just the belt tension.
19. Test run fan and retighten all setscrews and bolts and
trim balance as necessary. (0.150 in/sec max).
20. Replace inner housing cover.
Wheel Replacement
1. Drill two holes approximately centered between the
shaft and the edge of the hub outer dimension with the
following dimensions:
• 1/4” diameter
• 3/8” to 1/2” deep
• 180° apart in face of hub
2. Tap 1/4” holes to 5/16” thread with the 5/16” hole tap.
Do not drill or tap any larger than recommended.
3. Screw the puller arms into the tapped holes full depth
of threads (3/8” to 1/2” approximately). Align center of
puller with center of shaft. Make certain all setscrews
in hub (normally a quantity of two) are fully removed.
Work puller slowly to back wheel
o󰀨 the shaft.
Recommended Puller:
Lisle No. 45000 Steering Wheel
Puller. This puller is available at most
automotive parts retail outlets.
Troubleshooting
Problem and Potential Cause
Low Capacity or Pressure:
• Incorrect direction of rotation. Make sure the fan rotates
in same direction as the arrows on the motor or belt drive
assembly
• Poor fan inlet conditions. There should be a straight clear
duct at the inlet or outlet
• Improper wheel alignment
• Fan installed backwards. Verify airow diagram on page 5.
Excessive Vibration and Noise:
• Damaged wheel
• Belts misaligned
• Belts too loose; worn or oily belts
• Loose fasteners
• 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
• Bearing set screws loose
• Bearings need lubrication or replacement
• Debris in impeller
• Fan surge
• See page 4 for issues regarding use of VFD
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 speed
• Incorrect voltage
Overheated bearings:
• Improper bearing lubrication
• Excessive belt tension
Drilled hole placement.
Drilled Hole Location

8TMX IO&M B51108-003
Parts List
TMX Arr. 9
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 defec-
tive during 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 [phone] | Fax [phone] | lorencook.com June 2020
Part No. Description Part No. Description
1Companion Flange (optional) 14 Belt Set
2 Inlet Spiral Guard or Safety Screen (optional) 15 Drives
3External Inlet Vane Damper (optional) 16 Inner Housing Cover
4Shaft 17 Bearing Plate
5Inlet 18 TMX Housing
6Inlet Plate 19 Isolation Rails - Horizontal Mount (optional)
7Motor Plate 20 TMX Wheel
8Motor 21 Mounting Foot - Horizontal
9 Motor Cover (optional) 22 Isolation Structure - Vertical Mount (optional)
10 Bearing (two required) 23 Shaft Locking Collar - Vertical Mount
11 Belt Guard 24 Disconnect Cover
12 Access Door 25 Disconnect Plate
13 Discharge Safety Screen (optional)
12
4
3
5
6
5
6
12 7
8
9
10
11
1
13
14
15
16
16
7
17
18
18
19
22
20
21
20
21
23
8
25
24
TMX Arr. 4