Donaldson Torit TBI 3 User manual

This manual contains specific precautions related to worker safety.The hazard alert image denotes
safety related instructions and warnings in this manual. DO NOT operate or perform maintenance on this
collector until you have read and understood the instruction and warnings contained within this manual.
Torit Backward Inclined Fan
TBI-3 to 30 (60 and 50 Cycle)
Installation and Operation Manual
Installation, Operation, and Service Information
IOM AD3934101 (ENG)
Revision 2
English
Master Language

Donaldson Company, Inc.
i
The Safety Alert Symbol indicates a hazardous situation which, if not avoided could
result in death or serious injury. Obey all safety messages following this symbol to
avoid possible injury or death. The possible hazards are explained in the associated
text messages.
CAUTION, used with the safety alert symbol, indicates a hazardous situation
which, if not avoided, could result in minor or moderate injury.
NOTICE indicates a potential situation or practice which is not expected to result
in personal injury, but which if not avoided, may result in damage to equipment.
This manual has been supplied to assist with the installation, operation and maintenance for the collector purchased.
Please read the manual before installing, operating, or performing maintenance on the collector as it contains
specific precautions for worker safety. It is the owner’s responsibility to ensure that this manual is available for use by
installers, operators and maintenance personnel that will be working with this collector. This manual is the property of
the owner and should be left with the collector when installation has been completed. DO NOT operate this collector
until you have read and understood the instructions and warnings located in the installation and operation manual.
For additional copies of this manual, contact Donaldson Torit
IMPORTANT NOTES

Torit Backward Inclined Fan,TBI-3 through 30
ii
Contents
IMPORTANT NOTES .................................................................i
Safety Communication............................................................1
Description................................................................................2
Inspection on Arrival...............................................................2
Installation Codes and Procedures ......................................3
Hoisting Information ............................................................3
Storage...................................................................................3
Electrical Wiring...................................................................4
Fan Installation.........................................................................5
Fan With Inlet Spool Piece Mounted to Clean Air Outlet
With Weld Nuts ....................................................................7
Fan With Inlet Spool Piece Mounted to Clean Air Outlet
Without Weld Nuts...............................................................7
Motor Drain Hole Orientation
(Side Mount Fans)................................................................8
Fan with Inlet Spool Piece Mounted to Clean Air Outlet
with Adapter..........................................................................8
Fan Without Spool Piece.....................................................9
Duct Connections and Support..........................................9
Damper and Silencer Support Bracket ..........................10
Maintenance Information.....................................................11
Motor Maintenance...........................................................12
Grease Motors....................................................................12
Wheel Balance ...................................................................12
Troubleshooting Guidelines..................................................12
Troubleshooting......................................................................13
Product Information...............................................................15
Service Notes.........................................................................15
Donaldson Industrial Air Filtration Warranty ....................16

1
Donaldson Company, Inc.
Rotating blades can cause serious injury. Operate fan only when all guards are correctly and securely in
place.
Turn power off and lock out all power before performing service or maintenance work. It is not unusual for
the fan to be operated from a remote location, so fans may start unexpectedly.
Keep body, hands and foreign objects away from the inlet, the outlet and the other moving parts of the fan such as
shafts, belts and pulleys.
This fan has moving parts that can cause serious bodily injury. Before operating or starting maintenance, read the
installation and maintenance instructions provided with this manual and AMCA Publication 410 “Recommended Safety
Practices for Air Moving Devices.”
Combustible Dust Hazards
Among other considerations, the current NFPA standards require owners whose processes involve potentially
combustible materials to have a current Dust Hazard Analysis, which can serve as the foundation for their process
hazard mitigation strategy. Mitigation may include but is not limited to:
• Prevention of all ignition sources from entering any dust collection equipment.
• Selection and implementation of fire and explosion mitigation, suppression, and isolation strategies
appropriate for the risks in their process.
• Development and use of work practices to maintain safe operating conditions, and to ensure combustible dust
does not accumulate within their plant or process equipment.
Donaldson designs, manufactures, and sells industrial air filtration products for a wide variety of applications. Some
applications may include processes or materials with inherent fire and explosion hazards. Donaldson is neither an
expert nor a certified consultant in fire, spark, or explosion detection, suppression, or control. Donaldson does not
provide engineering consulting services related to process or dust hazard analyses, or code and standard compliance.
Complying with applicable codes and standards and managing the risks associated with the process or materials
remains the responsibility of the process owner/operator. Donaldson may provide referrals to consultants, suppliers
of equipment or services related to the detection and/or mitigation of sparks, fires and/or explosions, but Donaldson
does not assume responsibility for any such referrals, nor does Donaldson assume any liability for the fitness of a
mitigation strategy or product for a particular installation or application. The process owner’s final selection of dust
collectors and risk mitigation strategies should be based on the outcome of a Dust Hazard / Process Hazard Analysis
performed by the process owner. Although early engagement of a dust collector supplier provides helpful insights on
the availability and features of various products, process owners should consult with a combustible dust expert and/or
a process safety expert before making actual product and mitigation strategy selections.
Donaldson recommends that all industrial air filtration system designs be reviewed and approved by an expert
consultant who is responsible for the integrity of the system design and compliance with applicable codes and
standards. It is the process owner’s responsibility to understand the risks in their process and mitigate those risks in
accordance with all applicable laws, regulations and standards, including those published by the NFPA. Donaldson
also recommends that proper maintenance and housekeeping procedures and work practices be evaluated,
developed, and followed to maintain any industrial air filtration products in safe operating condition.
Many factors beyond the control of Donaldson can affect the use and performance of Donaldson products in a
particular application, including the conditions under which the product is used. Since these factors are uniquely
within the user’s knowledge and control, it is essential the user evaluate the Donaldson products to determine whether
the product is fit for the particular purpose and suitable for the user’s application. All products, product specifications,
and data (airflow, capacity, dimensions, or availability) are subject to change without notice, and may vary by region or
country.
Safety Communication

Torit Backward Inclined Fan,TBI-3 through 30
2
Description
Torit Backward Inclined (TBI) Fans provide a convenient,
cost-effective method of integrating a high efficiency fan
with a Donaldson®Torit®dust collector. The TBI mounts
directly to the clean-air outlet of the dust collector,
eliminating costly transition ducts, and reducing the
footprint of the system.
Operation
The TBI Fans feature a backward inclined fan wheel
which provides high efficiency operation. It also has
direct drive operation to eliminate maintenance of fan
bearings and belts. TBI Fans have computer balanced
fan and motor assemblies to ensure vibration-free
operation. When mounted to a Donaldson Torit Dust
collector, the fan is designed to pull air through the
collector to be filtered. Cleaned air exits the collector via
the outlet of the TBI Fan.
Inspection on Arrival
1. Inspect equipment and parts on delivery
2. Report any damage to the delivery carrier.
3. Request a written inspection report from the Claims
Inspector to substantiate any damage claim.
4. File claims with the delivery carrier.
5. Compare equipment and parts received with
description of product ordered.
6. Report incomplete shipments to the delivery carrier
and your Donaldson Torit representative.
7. Remove crates and shipping straps. Remove loose
components and accessory packages before lifting
parts from truck.
8. Check for hardware that may have loosened during
shipping.
9. Use caution removing temporary covers.
10. The fan and accessories should be inspected on
receipt for any shipping damage. Turn the wheel by
hand to see that it rotates freely and does not bind. If
dampers are provided, check for free operation of all
moving parts.

3
Donaldson Company, Inc.
Hoisting Information
Failure to lift the fan correctly can
result in severe personal injury
and/or property damage.
A crane or forklift and qualified operator are
recommended for unloading, assembly, and
installation of the fan.
Use all lifting points provided.
Fans should be lifted by the base, mounting supports,
or lifting points only. Never lift a fan by the wheel, shaft,
motor, motor bracket, housing inlet, outlet, or any fan part
not designed for lifting.
Use clevis connectors, not hooks, on lifting slings.
Check the Specification Control drawing for weight and
dimensions of the fan to ensure adequate crane capacity.
Refer to applicable OSHA regulations and local codes
when using cranes, forklifts, and other lifting equipment.
Use drift pins to align holes in flanges during assembly.
Storage
Check dampers for free operation and lubricate
moving parts prior to storage. Inspect the stored fan
periodically. Rotate the wheel by hand every two weeks
to redistribute grease on motor bearing parts.
Installation Codes and Procedures
Codes may regulate recirculating
filtered air in your facility.
Consult with the appropriate authorities
having jurisdiction to ensure compliance
with all national and local codes regarding
recirculating filtered air.
Safe and efficient operation of the equipment depends
on proper installation.
Authorities with jurisdiction should be consulted
before installing to verify local codes and installation
procedures. In the absence of such codes, install
collector according to the National Electric Code,
NFPA No. 70-latest edition and NFPA 91 (NFPA 654 if
combustible dust is present).
A qualified installation and service agent must complete
installation and service of this equipment.
All shipping materials, including shipping covers,
must be removed from the collector prior to or during
equipment installation.
Failure to remove shipping
materials from the equipment will
compromise performance.
Inspect parts to ensure all hardware is properly installed
and tight prior to operating equipment.

Torit Backward Inclined Fan,TBI-3 through 30
4
Electrical Wiring
Electrical installation, service,
or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Do not look into fan outlet to determine
rotation. Material may unexpectedly be
discharged from the fan. View the fan rotation
through the back of the motor.
To reverse rotation, three-phase power supply: switch
any two leads on the output side of the motor starter.
Do not interchange a power lead
with the ground wire. Severe
personal injury and/or property damage may
result.
All electrical wiring and connections, including electrical
grounding, should be made in accordance with the
National Electric Code (NFPA No. 70-latest edition).
Check local ordinances for additional requirements that
apply.
The appropriate wiring schematic and electrical rating
must be used. See collector’s rating plate for required
voltage.
Refer to the wiring diagram for number of wires required
for main power wiring and remote wiring.

5
Donaldson Company, Inc.
Torque Values for TBI
Setscrew Size
Diameter
Carbon Steel Setscrew
Torque*
In.
TBI 3-10
Lb. - Ft.
TBI 15-30
Lb. - Ft.
1/4 6.2 6.2
5/16 12 12
3/8 21 22
7/16 33 30
1/2 50 55
5/8 97 100
3/4 168 150
7/8 267 165
1 400 250
*Stainless steel setscrews are not hardened and should not
be tightened to more than half of the values shown.
Set screws should never be used more than once. If the
set screws are loose, they must be replaced. Use only
knurled, cup-point screws with a nylon locking patch.
Do not allow the fan wheel to
come loose from the motor as it
may cause severe injury or property damage.
To ensure proper attachment of the fan wheel:
Tighten all setscrews in fan wheel.
Repeat after 8 hours of operation.
Repeat again after two weeks of operation.
Reference Torque Value Table.
For additional information, contact the motor
manufacturer.
TBI fans are dynamically balanced and tested at
operating speeds to check for conformance to vibration
limits. All fans must be adequately supported for smooth
operation.
Safe operating spped is a function of system temperature
and wheel design. TBI fans should not be operated
above 3,600 RPM.
Fan Installation
Electrical installation, service,
or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Mounting a fan blower on the side of a
collector requires a side power adapter to
support the weight of the fan blower.
Poorly installed fan blowers may separate from
the collector resulting in personal injury and/or
property damage.
When mounting fan in an outdoor
or high humidity environment,
mount the motor with drain holes facing down
to extend motor life.

Torit Backward Inclined Fan,TBI-3 through 30
6
Fan Installation
motor
lifting points
lifting points
fan wheel
inlet cone
fan housing
sealant
sealant
spool (not supplied on all
fan assemblies)
dust collector clean air outlet (reference)
motor mounting plate

7
Donaldson Company, Inc.
Fan With Inlet Spool Piece Mounted to
Clean Air Outlet Without Weld Nuts
The following instructions are for a fan with an integrated
inlet spool piece being mounted on collectors that do
NOT have weld-nuts on the clean air outlet.
1. Apply the sealer, furnished in the installation
hardware kit, around clean air outlet opening of the
collector. Sealer should be applied in a Figure 8 type
pattern around each bolt hole so that inlet is sealed
from both the outside and the inside of the bolt hole.
2. Remove the inlet spool from fan. Retain the hardware
to for use when fan is reattached to the spool in
Step 5.
3. Position the inlet spool piece onto the collector
surface. Align mounting holes.
4. Bolt the inlet spool piece to the collector clean
air outlet by inserting supplied hardware. Reach
through to secure the nuts on the inside of the clean
air plenum. Apply supplied Loctite on nut.
Fan With Inlet Spool Piece Mounted to
Clean Air Outlet With Weld Nuts
The following instructions are for a fan with an integrated
inlet spool piece being mounted on collectors that have
weld-nuts on the clean air outlet.
1. Apply the sealer, furnished in the installation
hardware kit, around clean air outlet opening of the
collector. Sealer should be applied in a Figure 8 type
pattern around each bolt hole so that inlet is sealed
from both the outside and the inside of the bolt hole.
2. Position TBI fan and spool assembly onto the
collector surface. Align mounting holes.
3. Bolt the TBI fan and spool assembly to the collector
clean air outlet by inserting hardware supplied
through the inlet spool piece and into the weld nut
in the clean air plenum. Be sure to position the
discharge to be free of obstructions and locate so
that the motor’s electrical box will be positioned for
wiring convenience.
4. Inspect the installation prior to starting the fan.
Check for any loose items or debris that could be
drawn into the fan or dislodged by the air discharged
from the fan outlet. Check the interior of the fan as
well. Turn the wheel by hand to check for binding.
5. Complete the electrical connections in accordance
with NEC code and state and local codes. “Bump”
the starter to make sure the motor is rotating in
the proper direction. (Standard TBIs are clockwise
rotation as viewed from the motor endbell.)
spool apply loctite to
threads and face
of nut
cabinet (reference)
Steps 3-4
Step 2

Torit Backward Inclined Fan,TBI-3 through 30
8
Fan with Inlet Spool Piece Mounted to
Clean Air Outlet with Adapter
The following instructions are for a TBI fan being
mounted to a Donaldson Torit dust collector that has a
side mount adapter.
1. Apply sealer, furnished in the installation hardware
kit, around the clean air outlet opening of the
collector. Sealer should be applied in a Figure 8 type
pattern around each bolt hole so that inlet is sealed
from both the outside and the inside of the bolt hole.
2. Bolt the TBI fan to the adapter by inserting the
bolts on the TBI inlet into the appropriate holes
of the adapter. Install the nuts that came with the
fan. Be sure to position the discharge to be free of
obstructions and locate so that the motor’s electrical
box will be positioned for wiring convenience.
3. Inspect the installation prior to starting the fan.
Check for any loose items or debris that could be
drawn into the fan or dislodged by the air discharged
from the fan outlet. Check the interior of the fan as
well. Turn the wheel by hand to check for binding.
4. Complete the electrical connections in accordance
with NEC code and state and local codes. “Bump”
the starter to make sure the motor is rotating in
the proper direction. (Standard TBIs are clockwise
rotation as viewed from the motor endbell.)
5. Apply sealer on the inlet spool piece and re-attach
the TBI fan to the inlet spool piece. Be sure to
position the discharge to be free of obstructions
and locate so that the motor’s electrical box will be
positioned for wiring convenience.
6. Inspect the installation prior to starting the fan.
Check for any loose items or debris that could be
drawn into the fan or dislodged by the air discharged
from the fan outlet. Check the interior of the fan as
well. Turn the wheel by hand to check for binding.
7. Complete the electrical connections in accordance
with NEC code and state and local codes. “Bump”
the starter to make sure the motor is rotating in
the proper direction. (Standard TBIs are clockwise
rotation as viewed from the motor endbell.)
Motor Drain Hole Orientation
(Side Mount Fans)
Motor drain holes must be oriented downward to prevent
water accumulation in the motor and extend motor life.

9
Donaldson Company, Inc.
Duct Connections and Support
Any duct or attenuator/silencer should have independent
support. Do not use the fan to support duct or attenuator/
silencer. Isolating the fan from duct with flex connections
reduces transmission of vibration.
Fans handling hot gases must be rated for operation
at the gas temperature and require expansion joints at
both the inlet and discharge to prevent excessive loads
caused by thermal growth.
Fan Without Spool Piece
The following instructions are for a TBI fan without a
spool piece being mounted to a Donaldson Torit dust
collector.
1. Apply the sealer, furnished in the installation
hardware kit, around clean air outlet opening of the
collector. Sealer should be applied in a Figure 8 type
pattern around each bolt hole so that inlet is sealed
from both the outside and the inside of the bolt hole.
2. If the fan does not already have match marking
arrows, match-mark the motor mounting plate with
the fan housing so they can be reassembled in the
original position later in Step 6.
3. Remove the motor/wheel assembly from the fan
housing. Do not remove the wheel from the motor
shaft.
4. Position the fan housing onto the collector surface
with the fan inlet against the collector. Align the
mounting holes. Position the discharge to be free of
obstructions and locate so that the motor’s electrical
box will be positioned for wiring convenience.
5. Bolt the fan housing to the collector surface using
the hardware supplied. Put Loctite on the nut surface
that will come in contact with the inside surface of
the clean air plenum.
6. Apply sealer on the fan housing. Reinstall the motor/
wheel assembly onto the housing in the original
position as indicated in Step 2.
7. Inspect the installation prior to starting the fan.
Check for any loose items or debris that could be
drawn into the fan or dislodged by the air discharged
from the fan outlet. Check the interior of the fan as
well. Turn the wheel by hand to check for binding
8. Complete the electrical connections in accordance
with NEC code and state and local requirements.
“Bump” the starter to make sure motor is rotating in
the proper direction. (Standard TBIs are clockwise
rotation as viewed from the motor endbell.)

Torit Backward Inclined Fan,TBI-3 through 30
10
Damper and Silencer Support Bracket
Side and Top Mount
1. Attach the damper to the fan exhaust outlet using the
supplied hardware.
2. Attach the silencer adapter flange to the damper
using the bolts, washers and hex nuts supplied.
3. Apply sealant to the silencer adapter flange and
attach silencer to flange. Tighten all hardware.
Side Mount Support Brackets
Note: Side mount silencer support brackets
require modification in the field.
1. Loosely assemble the silencer’s support brackets
from silencer pack following procedure on the
silencer pack drawings.
a. Align the support bracket to the underside of the
silencer, flush with the cabinet wall and mark the
drill locations.
b. Drill pilot holes with a 0.339-in bit.
c. Secure brackets using 3/8-in thread forming
bolts.
2. Loosen the wing nut on the damper and adjust
position to restrict flow to design air volume.
Top Mount Support Brackets
1. Loosely assemble the silencer support brackets.
a. Align the pivoting support brackets to extend
a minimum of 30-inches from the collector and
mark the drill locations.
b. Drill pilot holes with a 0.339-in bit.
c. Screw brackets using 3/8-in thread-forming
bolts.
Typical Side and Top-Mount Silencer and Damper Installation
power pack power pack
damper
damper
Side Mount
silencer
silencer
pivoting
bracket
Top Mount

11
Donaldson Company, Inc.
Donaldson Torit TBI fans are manufactured to high
standards with quality materials and components. Proper
maintenance will ensure a long and trouble-free service
life.
Regular fan maintenance should
include the following:
Check the fan wheel for any wear or corrosion,
as either can cause catastrophic failures.
Check also for the build-up of material which
could cause unbalance resulting in vibration,
bearing wear and serious safety hazards. Clean
or replace the wheel as required.
Lubricate the bearings, but do not over
lubricate.
Periodically inspect the shaft for dirt buildup,
corrosion and signs of excess stress or fatigue.
During any routine maintenance, all setscrews
and bolts should be checked for tightness. See
Torque Value Table.
The key to good fan maintenance is regular and
systematic inspection of all fan parts. Inspection
frequency is determined by the severity of the application
and local conditions. Strict adherence to an inspection
schedule is essential.
When installing a new wheel or cone, the
proper wheel-to-drive side plate must be
maintained as shown in Side Plate Clearance
Table. Inlet cone clearance should be uniform
around the circumference.
Maintenance Information
Instruct all personnel on safe use and maintenance
procedures.
Use proper equipment and adopt
all safety precautions needed
for servicing equipment.
Electrical service or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out electrical
power sources before performing service or
maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
When mounting fan in an
outdoor or high humidity
environment, mount the motor with drain holes
facing down to extend motor life.
For additional information, contact the motor
manufacturer.
A
Wheel to Drive Side Plate Clearances
inlet cone
clearance

Torit Backward Inclined Fan,TBI-3 through 30
12
Motor Maintenance
TBI Fans typically use motors with greaseable bearings,
but other types of motors may have been selected for
your fan.
Side Plate Clearance
TBI “A” Dimension (inches)
Size 60 hz 50 Hz
3 1-1/4 1-1/4
5 7/8 2-1/4
7.5 7/8 2-3/4
10 1/2 3-1/4
15 1-1/8 3/4
20 1-5/16 2-3/16
25 2-7/16 2-7/16
30 2-11/32 1-5/16
Tolerance ± 1/8”
Grease Motors
Use the following steps for greaseable motors only:
1. Inspect the motor at approximately every 500 hours
of operation or every 3 months, whichever occurs
first.
2. Keep the motor clean and the ventilation openings
clear. If the motor is not properly ventilated
overheating can occur.
3. Use an electrical insulation tester to periodically
ensure that the integrity of the winding insulation has
been maintained. Investigate any significant drop in
resistance.
4. Grease the motor bearings using a high grade
bearing grease. For standard service conditions
ExxonMobil Polyrex™ EM grease is recommended.
Under standard conditions, grease every 5,500 hours.
In severe dirt and abrasive dust conditions, grease
every 2750 hours. Under extreme conditions, such
as an environment with iron dust, grease every 550
hours.
Wheel Balance
Airstreams containing particulate or chemicals can
cause abrasion or corrosion of the fan parts. This is
often uneven and can lead to wheel imbalance over time.
When such wear is discovered, a decision must be made
to rebalance or replace the wheel.
The soundness of all parts should be determined making
sure there is no hidden structural damage. The airstream
components should also be cleaned to remove any
build-up of foreign material. Specialized equipment can
be used to rebalance a cleaned wheel that is considered
structurally sound.
Balance weights should be rigidly attached at a point
that will not interfere with the housing nor disrupt airflow.
Troubleshooting Guidelines
Use current safety practices when investigating fan or
system performance problems. General safe practices
and performance troubleshooting guidelines can be
found in AMCA Publications 410 and 202, respectively.
Fan application and field measurement procedures can
be found in AMCA Publications 201 and 203.
ExxonMobil Polyrex™ EM is a trademark of Exxon Mobil Corporation

13
Donaldson Company, Inc.
Problem Probable Cause Remedy
Fan blower and motor do
not start
Improper motor wire size Rewire using the correct wire gauge as specified by
national and local codes.
Not wired correctly Check and correct motor wiring for supply voltage.
See motor manufacturer's wiring diagram. Follow
wiring diagram and the National Electric Code.
Collector not wired for available
voltage
Correct wiring for proper supply voltage.
Input circuit down Check power supply to motor circuit on all leads.
Electrical supply circuit down Check power supply circuit for proper voltage.
Check for fuse or circuit breaker fault. Replace as
necessary.
Damaged motor Replace damaged motor.
Fan blower and motor
start, but do not stay
running
Incorrect motor starter installed Check for proper motor starter and replace if
necessary.
Access doors are open or not
closed tight
Close and tighten access doors. See Filter
Installation.
Hopper discharge open Check that dust container is installed and properly
sealed.
Damper control not adjusted
properly
Check airflow in duct. Adjust damper control until
proper airflow is achieved and the blower motor’s
amp draw is within the manufacturer’s rated amps.
Electrical circuit overload Check that the power supply circuit has sufficient
power to run all equipment.
Insufficient airflow Fan rotation backwards Proper fan rotation is clockwise when viewed from
the motor side or counterclockwise when viewed
through the inlet cone. See Preliminary Start-Up
Check.
Access doors open or not
closed tight
Check that all access doors are in place and
secured. Check that the hopper discharge opening is
sealed and that dust container is installed correctly.
Fan exhaust area restricted Check fan exhaust area for obstructions. Remove
material or debris. Adjust damper flow control.
Filters need replacement Remove and replace using genuine Donaldson
replacement filters. See Filter Removal and
Installation.
Excessive vibration Loose mounting bolts or set
screws
Tighten loose bolts or set screws.
Misalignment or excessive wear
of wheel
Align wheel and balance fan.
Misaligned or unbalanced motor Balance fan.
Bent shaft due to mishandling or
material impact
Replace motor with bent shaft and rebalance fan.
Troubleshooting

Torit Backward Inclined Fan,TBI-3 through 30
14
Problem Probable Cause Remedy
Excessive vibration Externally transmitted vibration Isolate collector from external vibration.
Accumulation of foreign
material on the wheel
Clean the wheel.
Excessive system pressure or
restriction of airflow due to
closed dampers
Open dampers far enough for fan to operate in stable
flow regime.
Inadequate performance Fan running too slowly Check power frequency against fan motor design
frequency.
Fan wheel rotating in wrong
direction or installed backwards
on shaft
Proper fan rotation is clockwise from the top of the
fan. The fan can be viewed through the back of the
motor.
Poor system design, closed
dampers, air leaks or clogged
filters
Check system for damper positions leak points.
Check filter Delta P.
Sharp deflection of airstream at
fan outlet
Do not place fan discharge next to a wall.
Missing discharge fittings Install discharge fittings.
Excessive noise Fan operating near “stall” due
to incorrect system design or
installation
Correct system or replace with correctly sized fan.
Vibration originating elsewhere
in the system
Vibration isolate collector from the system.
Loose accessories or
components
Tighten accessories or components.

15
Donaldson Company, Inc.
Model Number _____________________________ Serial Number ______________________________
Ship Date _________________________________ Installation Date _____________________________
Filter Type ____________________________________________________________________________
Collected Dust ________________________________________________________________________
Dust Properties: Kst______________Pmax _____________MIE ___________MEC________________
Accessories __________________________________________________________________________
Other________________________________________________________________________________
____________________________________________________________________________________
Product Information (Process Owner to complete and retain for your records)
Service Notes
Date Service Performed Notes

Donaldson warrants to the original purchaser only that the Goods will be free from defects in material and manufacture for the applicable
time periods stated below: (1) Major structural components for a period of ten (10) years from the date of shipment; (2) Non-Structural,
Donaldson-built components and accessories including Donaldson Airlocks, TBI Fans, TRB Fans, Fume Collector products, Donaldson
built electrical control components, and Donaldson-built Afterlter housings for a period of twelve (12) months from date of shipment; and
(3) Donaldson-built lter elements for a period of eighteen (18) months from date of shipment.
Buyer is solely responsible for determining if goods t Buyer’s particular purpose and are suitable for Buyer’s process and application.
Seller’s statements, engineering and technical information, and recommendations are provided for the Buyer’s convenience and the
accuracy or completeness thereof is not warranted. If, after Seller receives written notice, within the warranty period, that any goods
allegedly do not meet Seller’s warranty, and Seller, in its sole discretion, determines that such claim is valid, Seller’s sole obligation and
Buyer’s exclusive remedy for breach of the foregoing warranty or any Seller published warranty, will be, at Seller’s option, either: (i) repair
or replacement of such goods or (ii) credit or refund to Buyer for the purchase price from Seller. In the case of repair or replacement,
Seller will be responsible for the cost of shipping the parts but not for labor to remove, repair, replace or reinstall the allegedly defective
goods. Refurbished goods may be used to repair or replace the goods and the warranty on such repaired or replaced goods shall be
the balance of the warranty remaining on the goods which were repaired or replaced. Any repair or rework made by anyone other than
Seller is not permitted without prior written authorization by Seller, and voids the warranty set forth herein. Seller warrants to Buyer
that it will perform services in accordance with the Sales Documents using personnel of required skill, experience and qualications
and in a professional and workmanlike manner in accordance with generally recognized industry standards for similar services. With
respect to any services subject to a claim under the warranty set forth above, Seller shall, in its sole discretion, (i) repair or re-perform
the applicable services or (ii) credit or refund the price of such services at the pro rata contract rate and such shall be Seller’s sole
obligation and the exclusive remedy for breach of the foregoing warranty on services. Products manufactured by a third party (“Third
Party Product”) may constitute, contain, be contained in, incorporated into, attached to or packaged together with, the goods. Buyer
agrees that: (a) Third Party Products are excluded from Seller’s warranty in this Section 7 and carry only the warranty extended by the
original manufacturer, and (b) Seller’s liability in all cases is limited to goods of Seller’s design and manufacture only. EXCEPT FOR
SELLER’S WARRANTY OF TITLE TO THE GOODS, SELLER EXPRESSLY DISCLAIMS AND EXCLUDES ALL OTHER WARRANTIES
WHATSOEVER, WHETHER, EXPRESSED OR IMPLIED, ORAL, STATUTORY, OR OTHERWISE, INCLUDING BUT NOT LIMITED
TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL
PROPERTY AND ANY WARRANTIES ARISING FROM TECHNICAL ADVICE OR RECOMMENDATIONS, COURSE OF DEALING
OR OF PERFORMANCE, CUSTOM OR USAGE OF TRADE. Seller’s obligations do not cover normal wear and tear or deterioration,
defects in or damage to any goods resulting from improper installation, accident or any utilization, maintenance, repair or modication of
the goods, or any use that is inconsistent with Seller’s instructions as to the storage, installation, commissioning or use of the goods or
the designed capabilities of the goods or that, in its sole judgment, the performance or reliability thereof is adversely affected thereby, or
which is subjected to abuse, mishandling, misuse or neglect or any damage caused by connections, interfacing or use in unforeseen or
unintended environments or any other cause not the sole fault of Seller, and shall be at Buyer’s expense. Seller’s warranty is contingent
upon the accuracy of all information provided by Buyer. Any changes to or inaccuracies in any information or data provided by Buyer
voids this warranty. Seller does not warrant that the operation of the goods will be uninterrupted or error-free, that the functions of the
goods will meet Buyer’s or its customer’s requirements unless specically agreed to, or that the goods will operate in combination with
other products selected by Buyer or Buyer’s customer for its use.
The terms of this warranty may only be modied by a special warranty document signed by a Director, General Manager or Vice
President of Donaldson. To ensure proper operational performance of your equipment, use only genuine Donaldson replacement parts.
This Product is provided subject to and conditioned upon Donaldson’s Terms of Sale (“Terms”), a current copy of which
is located at termsofsale.donaldson.com. These Terms are incorporated herein by reference. By purchasing or using this
Product, the user accepts these Terms. The Terms are available on our website or by calling our customer service line
at 1-800-365-1331.
Torit Backward Inclined Fan,TBI-3 through 30
16
Donaldson Industrial Air Filtration Warranty

Donaldson Company, Inc.
Minneapolis, MN
donaldsontorit.com • shop.donaldson.com
North America
Email: [email protected]
Phone: (USA): 800-365-1331 • (MX): 800-343-3639
Australasia
Email: [email protected]
Phone: [phone]
Toll Free: (AU) 1800 345 837 • (NZ) 0800 743 387
China IAF
Email: [email protected]
Phone: [phone]
Donaldson Europe B.V.B.A.
Email: [email protected]
Phone: + 32 (0) 16 38 38 11
India
Email: [email protected]
Phone: [phone]
Toll Free: 18001035018
Latinoamerica
Email: [email protected]
Phone: [phone]
South Africa
Email: [email protected]
Phone: [phone]
Southeast Asia IAF
Email: [email protected]
Phone: [phone]
Important Notice
Many factors beyond the control of Donaldson can affect the use and performance of Donaldson products in a particular application, including the conditions under which the product is used. Since these
factors are uniquely within the user’s knowledge and control, it is essential the user evaluate the products to determine whether the product is fit for the particular purpose and suitable for the user’s application.
All products, product specifications, availability and data are subject to change without notice, and may vary by region or country.
Significantly improve the performance of your collector with genuine Donaldson Torit
replacement filters and parts. Call Donaldson Torit at 800-365-1331.
IOM AD3934101 ENG, Revision 2 (October 2018) ©2014-2018 Donaldson Company, Inc.
Donaldson, Torit and the color blue are marks of Donaldson Company, Inc. All other marks belong to their respective owners.