Aeromix Class I TORNADO User manual

Class I TORNADO®Aspirating Aerator
Installation,
Operation, and
Maintenance Manual
© 2009, AEROMIX Systems, Inc.
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 1 of 30

Welcome to the AEROMIX family. You have purchased quality aeration
equipment designed to provide years of trou le free service.
Enclosed are many important items:
•Registration/Referral Bonuses: Allows you to earn money y referring
customers to AEROMIX.
•Extended Warranty: Allows you to extend the standard one (1) year warranty
an additional year for a total of two (2) years.
•Brochures: Provide rief description of all AEROMIX aeration products.
•Instruction Manual: Explains equipment operation and routine maintenance.
•Recommended Maintenance: Kits you should have on hand to maximize
equipment life.
Read the instruction manual, purchase the extended warranty, purchase the
maintenance kits, and earn money for every customer you refer to AEROMIX.
Register as a new customer y filling out and faxing ack the enclosed
registration form and get a great free gift sent to you.
Call our Customer Service Department at [phone] anytime with questions
on how to keep your AEROMIX aerators performing perfectly all the time.
Sincerely,
Customer Service Department
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 2 of 30

Extended Warranty
A draft copy of the standard AEROMIX warranty is enclosed. This warranty
provides you with excellent protection against defects in workmanship and
materials which may occur during the first year. The exact terms and conditions
are printed on the warranty statement.
You can now extend this warranty coverage to protect original equipment for an
additional one (1) year (total of two (2) years of warranty coverage). Extended
warranties cannot e purchased past 60 days of shipment.
Extending the warranty enefits you y:
•Assuring you and the aeration equipment are protected against material
and workmanship defects that may occur in the future.
•Potentially saves parts expenses.
Extending the warranty is simple. Call our Customer Service Department at
[phone] for more information.
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 3 of 30

Warranty No:
Warranty
AEROMIX Systems, Incorporated proudly warrants all products manufactured by
it to be free of defects in material or workmanship for a period of eighteen
months from shipment, or twelve months from date of installation, whichever
occurs first. We will repair or replace any item which fails within the warranty
period when it is returned freight prepaid to our plant in Minneapolis, MN, USA
or to an authorized local repair center. This warranty is subject to the
conditions set forth below. Equipment or accessories not manufactured by
AEROMIX Systems, Incorporated, but supplied by us, such as; motors, control
panels, etc., carry the full warranty supplied by the manufacturer of that
equipment. The Purchaser assumes Original Buyer responsibility. Any
warranty claim for that equipment must be made directly to the original
manufacturer.
This warranty is subject to the following conditions:
1. Purchaser understands, agrees and accepts this warranty. Such acceptance shall be indicated by all
applicable parties signing and returning a copy of this document to AEROMIX. Warranty period begins as
stated above but is not activated or valid until all material is paid for in full to AEROMIX and the signed original
has been returned to AEROMIX. AEROMIX will then return a copy of the official, activated warranty statement
to all signing parties.
2. This warranty is made for the benefit of Purchaser (municipality or end user) and when applicable to the
Purchaser’s agent (contractor) only. This warranty is non-transferable and non-assignable.
3. Any repaired or replacement item supplied under this warranty shall be warranted as provided herein only for
the remainder of the warranty period applicable to the original purchase.
4. This warranty expressly excludes defects or damage caused by Acts of God such as, but not limited to; falling
objects, external forces, explosion, fire, riot, civic commotion, acts of war, or vandalism. It also excludes;
mishandling by Purchaser, excess wear, excessive corrosion, fatigue, abuse, or failure caused by lack of
maintenance, or caused by freight damage, improper storage, contact with foreign objects, use in highly
corrosive, highly abrasive or high temperature solutions, excess foam, or use in solutions with high levels of
large suspended solids.
5. AEROMIX shall have the absolute discretion to either repair or replace the failed item. The work so performed
shall be done using AEROMIX practices and materials. AEROMIX, herewith reserves the right to approve
and/or negotiate any contract for any such work not performed by AEROMIX.
6. IT IS UNDERSTOOD AND AGREED THAT AEROMIX’S LIABILITY HEREIN, WHETHER IN CONTRACT, IN
TORT, UNDER ANY WARRANTY, IN NEGLIGENCE OR OTHERWISE, SHALL NOT EXCEED THE COSTS
OF THE PURCHASE PRICE PAID TO AEROMIX AND UNDER NO CIRCUMSTANCES SHALL AEROMIX,
BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, LIQUIDATED, CONSEQUENTIAL, OR OTHER
TYPES OF DAMAGES INCLUDING ON-SITE LABOR. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF
ALL OTHER WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR APPLICATION.
7. All claims made under this warranty must be made to AEROMIX within thirty (30) days after Purchaser shall
have reasonably discovered the subject defect. AEROMIX, must be given a reasonable opportunity to inspect
any material claimed to be defective. Upon determination by AEROMIX, that a claimed failure is covered
under this warranty, and should AEROMIX choose to have the Purchaser handle the repair locally, the
Purchaser shall obtain two (2) competitive bids for the work involved. AEROMIX, shall have the right to obtain
additional bids at its sole cost. If AEROMIX elects to have any repair performed pursuant to any such bid,
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 4 of 30

Rugged Solutions in Water and Wastewater
AERATION
TORNADO® Aerator
HURRICANE® Aerator
TWISTER® Aerator
TYPHOON® Aerator
ZEPHYR® IAF System
CYCLONE® Diffuser
RIPTIDE™ Mixer
MONSOON® Aerator
AEROMIX offers a complete line of aerators, mixers,
diffusers and aeration systems for improving the
quality of water and wastewater. Our aerators
and aeration equipment are used worldwide for
municipal and industrial wastewater treatment and
lake rejuvenation. Let our technical experts assist
you in proper sizing, layout, and operation of your
next aeration or mixing system.
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 5 of 30

AE
R
R
AT I
O
N
AEROMIX Aeration Products:
Rugged Solutions inWater and Wastewater
AEROMIX is a world leader in water and wastewater treatment equipment. With decades of proven reliability
and unique installations in 75 countries, AEROMIX equipment is depended upon by prominent organizations
across the globe, including the U.S. Army Corps of Engineers, Contrack International, Haliburton, Coca-Cola,
and numerous others. AEROMIX offers full lines of treatment systems, aeration equipment and solar powered
equipment. Please visit www.aeromix.com to learn more about AEROMIX Systems.
Rental units available. Covered by United States Patent Nos. 5,160,667 - 4,741,870 - 5,868,091 - 7,048,260B2 - 5,183,596 - 6,634,626B2 - 5,762,833 -
D324,279. © 2010, AEROMIX Systems, Inc.
AEROMIX Systems, Inc.
7135 Madison Ave. West
Minneapolis, MN 55427 U.S.A.
Ph: 800-879-3677, 763-746-8400
Fax: [phone]
e-mail: [e-mail]
web: www.aeromix.com
To learn more about the AEROMIX aeration solution best suited for your application, call 800-879-3677 or visit www.aeromix.com
TORNADO®Aerator
• Self-Aspirating and Blower Assisted models available
• Available from 2 to 100HP (1.5 to 75 kW)
• All stainless steel construction, grease lubricated
bearings, and solid shaft vibration-free design
• Ideal for activated sludge basins, sludge holding
tanks, oxidation ditches, lagoons, ice control, and
post aeration applications
HURRICANE®Aerator
• Submersible Aspirating Aerator/Mixer
• Available from 5 to 100HP (3.75 to 75 kW)
• Customized air diffuser lengths for most efficient
aeration and mixing
• Effective in aerobic digesters, sludge holding tanks,
ow equalization tanks, sequencing batch reactors,
and post aeration
ZEPHYR®IAF System
• Induced Air Flotation (IAF) System
• Available from 1 to 10HP (.75 to 7.5 kW)
• Stainless steel construction
• Separates and removes fats, oils, and otable solids
• Applied at pulp and paper mills, petrochemical,
meat, vegetable and oil processing facilities
CYCLONE®Diffuser
• Coarse Bubble Diffusers
• Unique bubble shearing action for high oxygen
transfer efficiency
• Stainless steel construction
• Perfect for activated sludge basins, aerobic
digesters, aerated grit chambers, sludge storage
tanks, basin channels, and post-aeration basins
TWISTER®Aerator
• Low Speed Surface Aerator
• Available from 2 to 150HP (1.5 to 112 kW)
• Intense air-to-water mixing for high oxygen transfer
• Wear resistant and durable construction
• Ideal for highly loaded basins, oxidation ditches,
leachate treatment and activated sludge applications
TYPHOON®Aerator
• Floating High Speed Aerator
• Available from 2 to 200HP (1.5 to 150 kW)
• High pumping rates with a low trajectory for intense air-
to-water mixing and excellent oxygen transfer rates
• Minimal maintenance required
• Perfect for high rate aeration applications in basins and
lagoons
RIPTIDE®Mixer
• Direct Drive Surface Mixer
• Available from 2 to 30HP (1.5 to 22.5 kW)
• Directional mixing just below the surface for high basin
mixing efficiency
• Weedless design propeller
• Used in industrial applications for wastewater treatment
MONSOON®Aerator
• Floating Paddlewheel Aerator
• Available from 2 to 40HP (1.5 to 30 kW)
• High oxygen transfer and strong horizontal mixing
• 100% stainless steel construction for the ultimate
corrosion resistance
• Effective in lagoons, oxidation ditches, and equalization
basins
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 6 of 30

Packaged Plants
Compact Water Treatment
BREEZE® VOC Removal System
Field Erect Plant
TREATMENT SYSTEMS
Rugged Solutions in Water and Wastewater
AEROMIX offers factory pre-fabricated packaged
wastewater treatment plants, compact water
treatment systems, and air strippers. Our treatment
systems are used worldwide to provide potable
water for thousands of people at hotels and resorts,
shopping centers, ofce buildings, municipalities,
and industrial and military facilities. Let our
technical experts assist you in selecting the water
or wastewater treatment system that matches your
exact needs and requirements.
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 7 of 30

TREATMENT
S
Y
Y
S
TEM
S
To learn more about the AEROMIX treatment system best suited for your application, call 800-879-3677 or visit www.aeromix.com
AEROMIX Treatment System Products:
Rugged Solutions inWater and Wastewater
AEROMIX is a world leader in water and wastewater treatment equipment. With decades of proven reliability
and unique installations in 75 countries, AEROMIX equipment are depended upon by prominent organizations
across the globe, including the U.S. Army Corps of Engineers, Contrack International, Haliburton, Coca-Cola,
and numerous others. AEROMIX offers full lines of treatment systems, aeration equipment and solar-powered
equipment. Please visit www.aeromix.com to learn more about AEROMIX Systems.
Rental units available. Covered by United States Patent Nos. 6,547,855B1. © 2010, AEROMIX Systems, Inc.
AEROMIX Systems, Inc.
7135 Madison Ave. West
Minneapolis, MN 55427 U.S.A.
Ph: 800-879-3677, 763-746-8400
Fax: [phone]
e-mail: [e-mail]
web: www.aeromix.com
Packaged Plants
• Biological wastewater treatment system for
domestic waste
• Capable of producing up to 150,000 gallons per
day of potable water
• High degree of treatment - 99% removal of
BODs
• Compact and self-contained
• Installed above or below grade
• Applications include suburban subdivisions,
mobile home parks, motels, housing
developments, hotels and resort areas,
recreational facilities, highway rest areas, power
stations, apartment complexes, and military
posts
Compact Water Treatment
• Water treatment plants for the production of
potable water from well or surface water
• Flows from 1,000 to 1,000,000 gallons per day of
potable water
• Able to supply drinking water for populations
from 100 to 25,000 people
• Pre-fabricated, skid-mounted, or containerized
water treatment
• Treatment can include chemical addition,
coagulation, media ltration, membrane
separation, and disinfection depending on raw
water quality
• Perfect for industrial applications, hotels and
resorts, rural water supply, and military bases
BREEZE® VOC Removal System
• VOC Removal and Air Stripping System
• Maximum water ow of 200 gallons per minute
• Capable of removing nearly 100% of all volatile
organic compounds (VOC) and other gases
dissolved in water
• Compact, low maintenance, low cost alternative
to lters, packed towers, and mechanical
aerators
• Fine or coarse bubble diffusers are used to resist
fouling caused by iron, calcium, and biological
activity
• Can be operated with the assistance of an
induced draft or postiive displacement blower
Field Erect Plant
• Biological wastewater treatment system for
domestic waste
• Capable of producing 150,000 to 2,000,000
gallons per day of potable water
• High degree of treatment - 99% removal of BODs
• Permanent or temporary installations
• Easy to install and low maintenance
• Flexible design permits process selection for
each unique application
• Factory eld painting by AEROMIX (optional)
• Ideal for growing municipalities, residential
subdivisions, mobile home developments, small
cities or towns, and industrial waste applications
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 8 of 30

LumenAER™
Solar-Powered Circulator
SunAER™Diffused Air System
SolarAER™Surface Aerator
AuraAER™Floating Fountain
PhotonAER™
Submersible Aspirator
ECO-AERATION
Rugged Solutions in Water and Wastewater
AEROMIX is Your Solar Solution in Aeration and
Circulation.SM AEROMIX offers a comprehensive
line of water quality management products that
are completely powered by solar energy. AEROMIX
Eco Aeration products are used in ponds, lakes
and reservoirs, for algae and odor control,
reducing chemical consumption, improved mixing,
aeration, digesting bottom sludge, ice control, and
sh kill prevention.
Let our technical experts assist you in the proper
sizing, layout and operation of your next solar
powered aeration or circulation system.
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
Q-Pulse Id: VM483
Active: 11/11/2015
Page 9 of 30

E
E
E
E
C
C
C
C
O
O
O
O
-
A
A
E
E
R
A
A
A
T
T
T
I
O
N
To learn more about the AEROMIX eco-aeration solutions best for your application, call 800-879-3677 or visit www.aeromix.com
AEROMIX Eco-Aeration Products:
Rugged Solutions inWater and Wastewater
AEROMIX is a world leader in water and wastewater treatment equipment. With decades of proven reliability
and unique installations in 75 countries, AEROMIX systems are depended upon by prominent organizations
across the globe, including the U.S. Army Corps of Engineers, Contrack International, Haliburton, Coca-Cola,
and numerous others. AEROMIX offers full lines of treatment systems, aeration equipment and solar-powered
equipment. Please visit www.aeromix.com to learn more about AEROMIX Systems.
Rental units available. Covered by United States Patent Nos. 4,741,870 - 6,439,853B2 - 7,121,536B2 - 5,931,382 - D322,118.
© 2010, AEROMIX Systems, Inc.
AEROMIX Systems, Inc.
7135 Madison Ave. West
Minneapolis, MN 55427 U.S.A.
Ph: 800-879-3677, 763-746-8400
Fax: [phone]
e-mail: [e-mail]
web: www.aeromix.com
SolarAER™Surface Aerator
• Surface Aerator
• Operates 24/7
• Horizontal water movement increases dissolved oxygen
levels over a wide area
• Ideal for use in lakes and ponds
• Operates year round in any climate
LumenAER™ Circulator
• Solar-Powered Floating Circulator
• Operates 24/7
• Rapid oxygenation and distribution removes or reduces
odors, excess algae, excessive nutrient concentrations
and digesting bottom sludge
• Applied in lakes, estuaries, stormwater detention ponds,
polishing ponds, drinking water reservoirs, and more
AuraAER™Fountain
• Solar-Powered Floating Fountain
• Operates 24/7
• Aerates to control algae formations, add oxygen, reduce,
and prevent sh kill
• Ideal for lakes, residential and commercial ponds,
shallow ponds, and water sh ponds
SunAER™Diffused Air System
• Solar-Powered Diffused Air System
• 1 to 4 diffuser models available
• Vertical water circulation for total pond treatment
• Uses air bubbles to add oxygen, eliminate stratication,
and promote aerobic decomposition of bottom muck,
dead plants, and other waste materials from small water
bodies
PhotonAER™Submersible Aerator
• Solar-Powered Submersible Aerator
• Operates 24/7
• Fine bubble discharge destraties and provides
horizontal water circulation
• Ideal for shallow water bodies, only requiring a 2 foot (.6
meter) depth.
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Q-Pulse Id: VM483
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Page 10 of 30

TABLE OF CONTENTS
Safety Precautions 1
Section 1: Features 2
Section 2: Operating Principle 3
Section 3: Unpacking 4
Section 4: Mounting the Aerator 4
Section 5: TORNADO® Aerator Accessories 5
5.1: Mounting Accessories 5
5.2: Float Accessories 6-8
Section 6: Float Mooring Options 9
6.1: Mooring to Shore 9
6.2: Proper Way to Clip Wire Rope 10
6.3: Mooring with Anchors 11
Section 7: Mooring Accessories 12
Section 8: Wiring the Aerator 12
8.1: Recommended Electrical Accessories 12
8.2: Cable Selection 13
8.3: Electrical Accessories 13
Section 9: Start Up 14
9.1: Training 14
9.2: Propeller Rotation 14
9.3: Amp Draw 15
9.4: Observation of Operation 15
Section 10: Aligning the Coupling 15
Section 11: Maintenance Schedule 16
Section 12: Troubleshooting 17
Section 13: Disassembly & Maintenance 18
13.1: Removing the Propeller 18
13.2: Removing the Draft Tube 18
Section 14: Service Policy 19
Class I TORNADO® Drawings
Start-Up Sheet
APPENDICES A – C
Propeller & Motor Seal Module Instructions
Electrical Cable Selection
U-Bolt Clip Instructions
TORNADO Parts Kits
APPENDIX D
Equipment Data Sheets
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Page 11 of 30

SAFETY PRECAUTIONS
ANY EQUIPMENT THAT INVOLVES WATER, ELECTRICITY AND
MOVING PARTS IS POTENTIALLY DANGEROUS!
Owners and equipment operators are responsible to ensure that
everyone follows local safety rules and the rules listed in this
manual. AEROMIX is not responsible for injury or property
damage caused by unsafe equipment operation.
1. Read this manual before operating the equipment.
2. Always keep yourself and others away from the propeller when
the aerator is operating in or out of water.
3. Never let anyone swim in a pond which has an aerator operating.
4. When installing an aerator make sure the propeller is clear of any
submerged items such as mooring or electrical cable.
5. Make sure the electrical circuits are locked out (disconnected)
whenever equipment is being handled or serviced.
6. If the aerator is used for de-icing, make sure signs are posted in
accordance with state or local laws advising of thin ice and open
water.
7. NEVER climb on float or mounting assemblies while the equipment
is operating.
8. See additional safety precautions regarding the coupling flanges in
APPENDIX A.
9. All wiring should be done by a qualified electrician in accordance
with local electrical codes.
-1 -
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Page 12 of 30

SECTION 1: FEATURES
1. All wetted parts are stainless steel, including the propeller.
2. The CLASS I model is available from 2-10 horsepower (1.5 - 7.5kW) in 60 Hz and 2 -
7.5 horsepower (1.5 – 5.6kW) in 50 Hertz. Similar models available from 15-40
horsepower (11- 30kW), and 50 - 100 horsepower (37.5 - 75kW).
3. The aerator operates with no splashing or spraying. All mixing and oxygen transfer
takes place under the water's surface.
4. Units can be operated alone or in groups to create a circular flow pattern.
- 2 -
FIGURE 1:
Construction features of the Class I TORNADO®aerator
Stainless Steel
Propeller
Grease zerks (easy to
reach)
Standard
Coupling
Flanges
Standard TEFC
Motor
Large open Propeller Hub
for more air flow
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Page 13 of 30

SECTION 2: OPERATING PRINCIPLE
FIGURE 2 illustrates an aerator in operation. Water moving past the propeller creates
a low pressure zone at the propeller hub. This draws air through the draft tube air inlet
hole down to the propeller. Action of the propeller mixes the air stream with the water
resulting in tiny bubbles. The air and water mixture is forced away from the propeller
both horizontally and vertically effectively mixing and oxygenating the water.
- 3 -
FIGURE 2:
Aerator in operation
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Page 14 of 30

SECTION 3: UNPACKING
All AEROMIX TORNADO®aerators are inspected and tested at our factory prior to
shipment to assure that each aerator meets our quality standards. Be sure to inspect
the aerator for dents, scratches or any other damage that may have been caused in
shipping. Turn the propeller by hand to make sure it rotates freely without binding.
Minor binding resulting from bumps in shipping and handling can usually be remedied by
a thoughtful adjustment of the four propeller-end bolts attaching the draft tube to the
bearing support tube. These bolts require a 9/16 inch wrench and are easily accessed
(See FIGURE 16). The four similar bolts on the motor end of the draft tube do not
need adjustment. Simply tighten and loosen opposing pairs of the bolts in tandem to
again make the machined "collar" of the
propeller concentric within the draft tube. It
may require some experimenting with
adjustments to these two pair of bolts, but the
binding will be quickly and easily remedied.
(Note: Re-apply Loktite to the bolts whenever
removing and reinstalling them.) Uncorrectable
binding may be caused by a bent shaft, often the
result of the aerator being dropped onto its
propeller during shipping and handling. Check all
the aerator bolts for tightness. Report any
damage to the freight carrier, equipment
distributor and AEROMIX.
SECTION 4: MOUNTING THE AERATOR
All AEROMIX mounting accessories require mounting cradles as illustrated in FIGURE 4
below. Mounting the aerator simply consists of lowering the unit so the motor mount
pins set in the mounting cradle slot. A bolt, lockwasher, and flatwasher is tightened into
the semicircular slots on each side of the aerator. The semicircular slot allows the
aerator to be mounted in nearly any position from vertical to horizontal. Mounting
cradles are included in float or with mount kits.
Recommended tilt angle for general wastewater
applications is 45º from the horizontal. In some
applications, larger or smaller angles may be called
for to optimize the air aspiration rate and mixing
profile. Smaller angles maximize horizontal mixing
but reduce bubble hang time – larger angles mix
more deeply but reduce slightly the amount of air
aspirated. When angles smaller than 35° are used
to mount the aerator, vortex/cavitation shields may
be needed.
- 4 -
Mounting
Cradle
FIGURE 4:
Mounting the Aerator
FIGURE 3:
Unpacking &
Inspection
Verify propeller
turns freely
Draft Tube Bolts
(for adjustment if
needed)
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Page 15 of 30

FIGURE 5:
TORNADO Float Mount
SECTION 5: TORNADO AERATOR ACCESSORIES
AEROMIX offers a number of optional items including mounting accessories, mooring
accessories and electrical accessories. Unless ordered with the aerator, these
accessories are normally not included. The following drawings are general
arrangements and are not a detailed representation of offered accessories. For exact
drawings and parts lists, refer to the attachments to this manual, and the manual for the
float systems.
5.1: MOUNTING ACCESSORIES
The float mount and fixed mount (wall or bridge) are the two basic methods for
mounting the TORNADO aerator. The float mount (FIGURE 5) is best suited for large
basins, basins with sloped sides and basins with fluctuating water levels. It can be
easily moved to different locations.
FIGURE 6 shows a typical wall mount which is custom designed and built to wall and
water level dimensions supplied by the customer. These fixed mounts can be further
customized to allow swiveling the aerator and its mounting cradles through a full 180º
sweep, allowing fine-tuning of the direction of the mixing energy.
(Not shown, but also available, are mounting brackets that adapt our TORNADO aerator
to the float systems of other aerator
manufacturers.)
-5-
FIGURE 6:
TORNADO Wall Mount
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Page 16 of 30

5.2: FLOAT ACCESSORIES
Vortex Shield: Excessive vortexing (see Troubleshooting section) will not normally
occur with the TORNADO aerator when operated under ordinary conditions and when
tipped into the water at a 45º angle. In situations where vortexing does occur, an
optional vortex shield (FIGURE 7) is available.
Swing Arms: Swing arms (FIGURE 8) are needed whenever water levels fluctuate
beyond the limits of the mooring cable. Floats with swing arms can only be moored
perpendicular to the cable. Aerator thrust should be directed toward points of
attachment (cable or wall) so that arms are in tension, not compression.
- 6-
FIGURE 8:
Float with optional
swing arms
FIGURE 7:
TORNADO
with optional
vortex shield.
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Page 17 of 30

Front Low Water Level Legs: Typically used in combination with swing arms, low
water level legs (FIGURE 9A, B, C and 10A, B and C) allow a pond to be completely
emptied with the TORNADO aerator and floats moored into place. The legs hold the
propeller off the basin floor when there is no water in the basin.
Low Water Level Legs:
Front and Rear
-7-
FIGURE 9A, 9B, 9C:
Low Water Level Legs
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Page 18 of 30

-8-
FIGURE 10A, 10B, 10C:
Low Water Level Legs
Front and Rear
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Page 19 of 30

SECTION 6: FLOAT MOORING OPTIONS
A float mooring system is more flexible for positioning aerators than most other
mounting systems. The most common ways of mooring floats are mooring to posts on
shore or mooring to anchors. Optional mooring kits are available to enable the
attachment of the mooring lines to the float system (see Section 7.)
6.1: MOORING TO SHORE
The TORNADO floats are normally equipped to be moored either perpendicular (mooring
option A in FIGURE 11) or parallel (mooring option B in FIGURE 11) to the mooring
cable. Special modifications may be possible to allow the floats to be mounted at
different angles to shore. Size the mooring cable by number of aerators per span and
their motor horsepower by using the chart in Appendix C.Appendix C also provides
the maximum cable length and maximum unsupported distance for different cable sizes.
-9 -
FIGURE 11:
Moorin
g
to cable s
p
ans
OPTION BOPTION A
Aeromix Class 1 Tornado Aspirating Aerator - Installation Operation Maintenance - Vendor Manual
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Active: 11/11/2015
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