Roto-Mix 1220-20 Guide

1220-20 TRUCK &
STATIONARY FEED MIXER
SAFETY &
OPERATION MANUAL
ROTO-MIX
P.O. Box 1724
2205 E. Wyatt Earp Blvd.
Dodge City, Kansas 67801
[phone]
© ROTO-MIX LLC 2006
SERIAL NO. _______________
441952 08/2020 Printed in U.S.A.

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This Page Intentionally Left Blank

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TABLE OF CONTENTS
DESCRIPTION PAGE NO.
WARRANTY ..........................................................................................................................4
SCALES WARRANTY & SERVICE POLICY.........................................................................5
OPERATOR QUALIFICATIONS............................................................................................6
SAFETY INFORMATION .................................................................................................... 7-19
CHAIN TENSIONING & LOADING INSTRUCTIONS......................................................... 20-21
LUBRICATION .....................................................................................................................21
PLANETARY GEARBOX & HYDROSTAT & OVERHUNG LOAD ADAPTER .................. 22-23
SPECIFICATIONS ................................................................................................................24
1220-20 TRUCK DIMENSIONS ............................................................................................26
1220-20 STATIONARY DIMENSIONS..................................................................................27
REPAIR PARTS TABLE OF CONTENTS.............................................................................29

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ROTO-MIX LLC warrants to the original purchaser all products manufactured by it to be free from
defects in material and workmanship under normal use and service.
ROTO-MIX’s obligation under this warranty is limited to repairing or replacing, as the company
may elect, free of charge and without charge for installation, at the place of business of a dealer or
distributor authorized to handle the equipment covered by this warranty or at a ROTO-MIX facility,
any parts that prove, in the company’s judgment, to be defective in material or workmanship within
one (1) year after delivery to the original purchaser, and still owned by the original purchaser.
This warranty shall in no way make ROTO-MIX liable to anyone for personal injuries or damages,
loss of time, or expense of any kind either direct or indirect resulting from part failure or defect.
This warranty is subject to acts of God, fire and existing conditions of supply and demand, or
production, or ability or inability to deliver, or for any other valid reason beyond the reasonable
control of ROTO-MIX, to obtain materials, manufactured replacement parts, or make delivery
thereof. No distributor, dealer, agent, or ROTO-MIX employee (other than the CEO or President in
writing) is authorized to extend any other or further express or implied warranty or incur any
additional obligation on ROTO-MIX’s behalf in connection with the sale of this product.
If ROTO─MIX, or its duly authorized representative, shall find that such returned part or parts are
defective and such defects, or defect, are included in and covered by said warranty, then such
defective part or parts shall promptly be replaced without charge to the purchaser, F.O.B. the
ROTO─MIX plant.
Product Registration - It is a condition of this warranty that the original purchaser must fill out the
warranty card furnished by ROTO-MIX and that it be returned to ROTO-MIX within 10 days of
purchase and be recorded in ROTO-MIX’s owner file for this warranty to be valid. In the event an
owner’s card is not on file at the ROTO-MIX office, the warranty period will extend only from date
equipment was picked up or shipped from the ROTO-MIX plant.
Maintenance - It is the customer’s responsibility to maintain their equipment in accordance with
the instructions provided in the Operator’s Manual. ROTO-MIX recommends that you keep
records and receipts; you may be asked to prove that maintenance instructions have been
followed.
Operation –It is the customer’s responsibility to operate the equipment only for the purpose for
which it was designed and in accordance with all safety and operational recommendations
contained in the Operators Manual. If a defect in materials or workmanship occurs, it is the
customer’s responsibility to cease operating the equipment until authorized repairs are made.
Damage, which occurs from continued operation, may not be covered by this warranty.
What this Warranty Covers
This warranty covers failures caused by defects in materials or workmanship only.
-Improper operation
-Natural calamities
-Unauthorized modifications
-Unauthorized repairs
-Use of Non ROTO-MIX parts
-Neglected maintenance
-The use of PTO Shaft
Adaptors
-Usage contrary to the
intended purpose of the
product
Warranty continues on the next page.

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This Warranty does not cover replacement of Wear or Maintenance Items including, but not
limited to.
This Warranty does not cover:
-Pickup and delivery of the equipment
-Service Calls or Travel Time to and from sites
-Rental of replacement equipment during repair period
-Products that have been declared a total loss and subsequently salvaged
-Overtime labor charges
-ROTO-MIX is not responsible and will not be liable for damage caused to persons or property,
commercial loss, loss of time or production, loss of use by reason of the installation or use of
ROTO-MIX products or their mechanical failure.
Right to Make Changes
ROTO-MIX reserves the right to make any changes to a ROTO-MIX product at any time without
incurring any obligation with respect to any product previously ordered, sold or shipped, with or
without notice.
Parts Warranty
ROTO-MIX warranties replacement parts against defects in materials or workmanship for a period
of 90 days or the remainder of the product warranty, whichever is longer. Remedy for defective
replacement parts for units that are beyond the original product warranty, will be limited to
replacement of the failed part. Failures that are due to damage, improper installation, lack of
maintenance or improper operation will not be covered.
ROTO-MIX 2205 East Wyatt Earp Blvd., Dodge City, KS 67801 [phone] Fax: (620)
-Lubricants
-Filters
-Hoses
-Tires
-Augers
-Wipers
-Chains
-Idlers
-Batteries
-Blades
-Belts
SCALES WARRANTY & SERVICE POLICY
DIGI-STAR SCALE SYSTEMS
Digi-Star, LLC warrants for a period of one year from date of installation, to correct by repair or
replacement, at Digi-Star’s option, any defect in material or workmanship in any part of this product.
In the event of replacement, Digi-Star’s sole obligation shall be to provide replacement products or
parts. F.O.B. Digi-Star, LLC, W5527 Hwy 106, Fort Atkinson, WI 53538 USA.
WEIGH-TRONIX SCALE SYSTEMS
WEIGH-TRONIX warrants for a period of one year from date of installation, to correct by repair or
replacement, at Weigh-Tronix’s option, any defect in material or workmanship in any part of this
product. In the event of replacement, Weigh-Tronix’s sole obligation shall be to provide
replacement products or parts. F.O.B. Avery Weigh-Tronix, 1000 Armstrong Drive, Fairmont, MN
56031-1439 USA.

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Operation Of this mixer/feeder shall be limited to competent and experienced
persons. In addition, anyone who will operate or work around a mixer/feeder must use
good common sense. In order to be qualified, he or she must also know and meet all
other qualifications, such as:
1. Some regulations specify that no one under the age of sixteen (16) may operate
power machinery. It is your responsibility to know what these regulations are in
your area and/or situation.
2. Current OSHA regulations state in part: At the time of initial assignment and at
least annually thereafter, the employer shall instruct EVERY employee in the
safe operation and servicing of all equipment with which the employee is, or will
be involved.
3. Unqualified persons are to STAY OUT OF THE WORK AREA.
4. A person who has not read and understood all operating and safety instructions
is not qualified to operate the machinery.
FAILURE TO READ THIS MIXER/FEEDER MANUAL AND ITS SAFETY
INSTRUCTIONS IS A MISUSE OF THE EQUIPMENT.
OPERATOR QUALIFICATIONS
SAFETY
READ BEFORE
YOU FEED
SAFETY
READ BEFORE
YOU FEED
SAFETY
READ BEFORE
YOU FEED

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SAFETY
TAKE NOTE! THIS SAFETY ALERT SYMBOL FOUND THROUGHOUT THIS MANUAL
IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLVING YOUR PER-
SONAL SAFETY AND THE SAFETY OF OTHERS. FAILURE TO FOLLOW THESE IN-
STRUCTIONS CAN RESULT IN INJURY OR DEATH.
THIS SYMBOL MEANS
-ATTENTION!
-BECOME ALERT!
-YOUR SAFETY IS INVOLVED!
SIGNAL WORDS: Note the use of the signal words DANGER, WARNING, and CAUTION
with the safety messages. The appropriate signal word for each has been selected using
the following guidelines:
DANGER: Indicates an imminently hazardous situation that, if not avoided, will
result in serious injury or death. This signal word is to be limited to the most extreme
situations typically for machine components which, for functional purposes, cannot
be guarded.
WARNING: Indicates a potentially hazardous situation that, if not avoided, will result
in serious injury or death, and includes hazards that are exposed when guards are
removed. It may also be used to alert against unsafe practices.
CAUTION: Indicates a potentially hazardous situation that, if not avoided, may
result in minor or moderate injury. It may also be used to alert against unsafe
practices.
If you have questions not answered in this manual or require additional copies or the
manual is damaged, please contact your dealer or ROTO-MIX, 2205 E. Wyatt Earp, Dodge
City, Kansas, 67801. (Telephone) 620-225-1142 (Fax) 620-225-6370

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OPERATING PRECAUTIONS & INSTRUCTIONS:
A. Check to see that no obstructions are present in the mixer prior to start up.
B. Before loading, run the mixer empty and check all operations.
C. Do not overload the mixer, as the mixing efficiency may be reduced and unit
damage may occur. (See loading instructions).
D. Remove all moisture drain plugs if the mixer is going to set in the rain or snow.
E. Be sure all shields are in place before operation.
F. Use common sense when operating.
SAFETY FIRST
REMEMBER: The careful operator is the best operator. Most accidents are caused by
human error. Certain precautions must be observed to prevent the possibility of injury or
death.
DO NOT ALLOW PERSONNEL OTHER THAN THE QUALIFIED
OPERATOR NEAR THE MACHINE.
NEVER START MACHINE UNTIL ALL GUARDS AND SAFETY
SHIELDS ARE IN PLACE.
DO NOT CLEAN, ADJUST OR LUBRICATE THE MACHINE WHILE
IT IS IN MOTION.
LOOSE OR FLOPPY CLOTHING SHOULD NOT BE WORN BY THE
OPERATOR.

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EQUIPMENT SAFETY GUIDELINES
Safety of the operator is one of the main concerns in designing and developing a
new piece of equipment. Designers and manufactures build in as many safety
features as possible. However, every year many accidents occur which could have
been avoided by a few seconds of thought and a more careful approach to handling
equipment. You, the operator, can avoid many accidents by observing the following
precautions in this section. To avoid personal injury, study the following precautions
and insist those working with you, or for you, follow them.
In order to provide a better view, certain photographs or illustrations in this
manual may show an assembly with a safety shield removed. However, equipment
should never be operated in this condition. Keep all shields in place. If shield
removal becomes necessary for repairs, replace the shield prior to use.
Replace any CAUTION, WARNING, DANGER or instruction safety decal that is
not readable or is missing. Location of such decals are indicated in this manual.
Do not attempt to operate this equipment under the influence of drugs or alcohol.
Review the safety instructions with all users annually.
This equipment is dangerous to children and persons unfamiliar with its
operation. The operator should be a responsible adult familiar with farm machinery
and trained in this equipment’s operations. Do not allow persons to operate or
assemble this unit until they have read this manual and have developed a thorough
understanding of the safety precautions and of how it works.
Do not paint over, remove or deface any safety signs or warning decals on your
equipment. Observe all safety signs and practice the instructions on them.
Never exceed the limits of a piece of machinery, in its ability to do a job, or to do
so safely, if in question - DON’T TRY IT.
LIGHTING AND MARKING
It’s the responsibility of the customer to know the lighting and marking
requirements of the local highway authorities and to install and maintain the
equipment to provide compliance with the regulations. Add extra lights when
transporting at night or during periods of limited visibility.
SAFETY
READ BEFORE
YOU FEED

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KEEP ALL SHIELDS IN PLACE
Do not operate mixer/feeder without safety shields in
place.
Rotating parts can crush or dismember causing personal
injury or death.
Disconnect PTO driveline before removing shields for
adjustment or service.
OPERATE MIXER/FEEDER SAFELY
Rotating parts can entangle or strike people, resulting in
personal injury or death.
Never enter a mixer/feeder while in operation.
Operate the mixer/feeder from the operator’s seat only.
Do not exceed load capacity of the mixer/feeder. (See
loading instructions).
Reduce speed when turning or traveling on rough terrain.
Avoid traveling over loose fill, rocks, ditches or holes.
Keep transmissions in gear when traveling downhill.
KEEP RIDERS OFF MIXER/FEEDER
Keep riders off.
Riders are subject to injury such as being struck by
foreign objects and being thrown off. Riders also
obstruct the operator’s view resulting in the machine
being operated in an unsafe manner.
SAFETY
READ BEFORE
YOU FEED

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STAY CLEAR OF ROTATING DRIVELINES
Entanglement in rotating driveline can cause serious injury
or death.
Make sure rotating shields turn freely.
Wear close fitting clothing. Stop the engine and be sure
PTO driveline is stopped before making adjustments,
connections, or cleaning out PTO driven equipment .
PREVENT BATTERY EXPLOSIONS
Keep sparks, lighted matches, and open flame away from
the top of battery. Battery gas can explode.
Never check battery charge by placing a metal object
across the posts. Use a volt-meter or hydrometer.
Do not charge a frozen battery; it may explode. Warm
battery to 60F (16C) before charging.
AVOID HIGH-PRESSURE FLUIDS
Escaping fluid under pressure can penetrate the skin
causing serious injury or death.
Avoid the hazard relieving pressure before disconnecting
hydraulic or other lines. Tighten all connections before
applying pressure.
Search for leaks with a piece of cardboard. Protect hands
and body from high pressure fluids.
If an accident occurs, see a doctor immediately. Any fluid
injected into the skin must be surgically removed within a
few hours or gangrene may result. Doctors unfamiliar with
this type of injury should reference a knowledgeable
medical source.
SAFETY
READ BEFORE
YOU FEED

(A)
(E)
(G)
(H)
(F) (F)
(A)
(E)
(C)(C)
(B)
(B)
(F) (F)
(D)
1220-20 SAFETY DECALS
12

440819 - (E)
440822 - (C) 440801 - (D)
440034 - (B)
440826 - (F)
440818 - (G)
440807 - (H)
440035 - (A)
1220-20 SAFETY SIGNS/DECALS
13

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SAFETY DECAL CARE
Keep safety decals and signs clean and legible at all times.
Replace safety decals and signs that are missing or have become illegible.
Replaced parts that displayed a safety sign should also display the current sign.
Safety decals or signs are available from your dealer or the ROTO-MIX
manufacturing plant.
How to Install Safety Decals:
Be sure that the installation area is clean and dry.
Decide on the exact position before you remove the backing paper.
Remove the smallest portion of the split backing paper.
Align the decal over the specified area and carefully press the small portion with
the exposed sticky backing in place.
Slowly peel back the remaining paper and carefully smooth the remaining portion
of the decal in place.
Small air pockets can be pierced with a pin and smoothed out using the piece of
decal backing paper.
SAFETY
READ BEFORE
YOU FEED
PRACTICE FIRE PREVENTION
Keep fire extinguishers accessible at all times. Use the extinguisher
recommended for the material being processed. It should be rated safe for use on
electrical fires.
Never smoke close to combustible material.
Clean the area before welding or other activities which may make sparks.
Keep all components that generate excessive heat clear of oil and other
combustible materials.

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REMEMBER
Your best assurance against accidents is a careful and responsible
operator. If there is any portion of this manual or function you do not
understand, contact your dealer or the ROTO-MIX plant.
BEFORE OPERATION:
Carefully study and understand this manual.
Do not wear loose-fitting clothing which may catch in moving parts.
Always wear protective clothing and substantial shoes.
Keep wheel lug nuts or bolts tightened to specified torque.
Assure that agricultural implement & truck tires are inflated evenly.
Give the unit a visual inspection for any loose bolts, worn parts or cracked
welds, and make necessary repairs. Follow the maintenance safety instructions
included in this manual.
Be sure that there are no tools lying on or in the mixer/feeder.
Do not use the unit until you are sure that the area is clear, especially children
and animals.
Because it is possible that this mixer/feeder may be used in dry areas or the
presence of combustibles, special precautions should be taken to prevent fires
and fire fighting equipment should be readily available.
Don’t hurry the learning process or take the unit for granted. Ease into it and
become familiar with your new mixer/feeder.
Practice operation of your mixer/feeder and its attachments. Completely
familiarize yourself and other operators with its operation before using.
SAFETY
READ BEFORE
YOU FEED

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DURING OPERATION:
Beware of bystanders, particularly children! Always look around to make sure
that it is safe to start the vehicle engine or move the unit. This is particularly
important with higher noise levels and quiet cabs, as you may not hear people
shouting.
Keep hands and clothing clear of moving parts.
Do not clean, lubricate or adjust your mixer/feeder while it is moving.
Be especially observant of the operating area and terrain - watch for holes, rocks
or other hidden hazards. Always inspect the area prior to operation.
Do not operate near the edge of drop-offs or banks.
Do not operate on steep slopes as overturn may result.
Operate up and down (not across) intermediate slopes. Avoid sudden starts
and stops.
Pick the levelest possible route when transporting across fields. Avoid the edges
of ditches or gullies and steep hillsides.
Be extra careful when working on inclines.
Periodically clear the equipment of brush, twigs or other materials to prevent
buildup of dry combustible materials.
Avoid overhead wires or other obstacles. Contact with overhead lines could
cause serious injury or death.
Avoid loose fill, rocks and holes; they can be dangerous for equipment operation
or movement. Allow for unit length when making turns.
Do not walk or work under raised components or attachments unless securely
positioned and blocked.
Keep all bystanders, pets and livestock clear of the work area.
Never stand alongside of the unit with engine running. Never attempt to start
engine and/or operate machine while standing alongside of unit.
SAFETY
READ BEFORE
YOU FEED

17
DURING OPERATION (CONT.)
Never leave running mixer/feeder unattended.
As a precaution, always recheck the hardware on mixer/feeder following every
100 hours of operation. Correct all problems. Follow the maintenance safety
procedures.
FOLLOWING OPERATION:
Following operation, disengage the PTO and all power drives, set the brakes,
shut off the engine and remove the ignition keys.
Store the unit in an area away from human activity.
Do not park equipment where it will be exposed to livestock for long periods of
time. Damage and livestock injury could result.
Do not permit children to play on or around the stored unit.
Make sure parked machine is on a hard, level surface and engage all safety
devices.
Wheel chocks may be needed to prevent unit from rolling.
HIGHWAY AND TRANSPORT OPERATIONS:
Adopt safe driving practices:
Always drive at a safe speed relative to local conditions and ensure that your
speed is low enough for an emergency stop to be safe and secure. Keep
speed to a minimum.
Reduce speed prior to turns to avoid the risk of overturning.
Avoid sudden uphill turns on steep slopes.
Do not drink and drive.
SAFETY
READ BEFORE
YOU FEED

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HIGHWAY AND TRANSPORT OPERATIONS (CONT.):
Comply with state and local laws governing highway safety and movement of
farm machinery on public roads.
Use approved accessory lighting flags and necessary warning devices to protect
operators of other vehicles on the highway during daylight and nighttime
transport.
The use of flashing amber lights is acceptable in most localities. However, some
localities prohibit their use. Local laws should be checked for all highway lighting
and marking requirements.
When driving the mixer/feeder on the road or highway under 20 MPH (40 KPH) at
night or during the day, use flashing amber warning lights and a slow moving
vehicle (SMV) identification emblem.
Plan your route to avoid heavy traffic.
Be a safe courteous driver. Always yield to oncoming traffic in all situations,
including narrow bridges, intersections, etc.
Be observant of bridge loading ratings. Do not cross bridges rated lower than he
gross weight at which you are operating.
Watch for obstructions overhead and to the side while transporting.
Always operate mixer/feeder in a position to provide maximum visibility at all
times. Make allowances for increased length and weight of the mixer/feeder
when making turns, stopping the unit, etc.
PERFORMING MAINTENANCE:
Good maintenance is your responsibility. Poor maintenance is an invitation to
trouble.
Make sure there is plenty of ventilation. Never operate the engine of the vehicle
in a closed building. The exhaust fumes may cause asphyxiation.
Before working on the mixer/feeder, stop the vehicle, set the brakes, disengage
the PTO and all power drives, shut off the engine and remove the ignition keys.
Be certain all moving parts on attachments have come to a complete stop before
attempting to perform maintenance.
SAFETY
READ BEFORE
YOU FEED

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PERFORMING MAINTENANCE (CONT.):
Always use the proper tools or equipment for the job at hand.
Use extreme caution when making adjustments.
Never use our hands to locate hydraulic leaks on attachments. Use a small
piece of cardboard or wood. Hydraulic fluid escaping under pressure can
penetrate the skin.
When disconnecting hydraulic lines, shut off hydraulic supply and relieve all
hydraulic pressure.
Openings in the skin and minor cuts are susceptible to infection from hydraulic
fluid. If injured by escaping hydraulic fluid, see a doctor at once. Gangrene can
result. Without immediate treatment, serious infection and reactions can occur.
Replace all shields and guards after servicing and before moving.
After servicing, be sure all tools, parts and service equipment are removed.
Do not allow grease or oil to build up on any step or platform.
Never replace hex bolts with less than grade five (5) bolts unless otherwise
specified. In some locations a grade 8 fastener may be required, consult your
local Roto-Mix Dealer or Roto-Mix Service Department for more information.
Where replacement parts are necessary for periodic maintenance and servicing,
genuine factory replacement parts must be used to restore your equipment to
original specifications. ROTO-MIX will not claim responsibility for use of
unapproved parts and/or accessories and other damages as a result of their
use.
If equipment has been altered in any way from original design, ROTO-MIX does
not accept any liability for injury or warranty.
A fire extinguisher and first aid kit should be kept readily accessible while
performing maintenance on this mixer/feeder.
SAFETY
READ BEFORE
YOU FEED

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READ THE FOLLOWING BEFORE WELDING ON THIS MIXER/FEEDER
When welding on your mixer/feeder, do not allow the current to flow through the ball
bearings or the roller chains. Ground directly to the item being welded.
Always disconnect the scale instrumentation from the weigh bars or load cells and the
power source. Be sure the current does not pass through weigh bars or load cells or scale
indicator. The alternator should always be disconnected.
CHAIN TENSION
All the single roller chain should be tightened to the point of .042” (1 mm) (dime)
clearance is reached between the coils of the 1-1/4” diameter idler tension springs
and .068” (1.7 mm) (nickel) clearance is reached between the coils of the 1-3/4”
diameter idler tension springs.
LOADING INSTRUCTIONS & PRECAUTIONS
A. Do not add side board extensions to the mixer.
B. Do not overload the mixer. Mixer capacity can be reached by weight or volume. By
volume, the rotor bars and wipers should always be visible at the peak of the rotor
cycle. If the rotor is completely submerged under the mix, mixing efficiency may be
reduced, spillage may occur, and damage to the mixer may result. Maximum capacity
by weight can be calculated by multiplying 28 pounds times mixer cubic foot capacity.
C. Load molasses and/or liquid protein supplements first with mixer not running, then add
one (1) commodity ingredient before starting the mixer. For the shortest mixing time
and maximum mixing efficiency, these items should be added at the first of the loading
process.
D. When adding minute supplements or medication in non-liquid form, these ingredients
should be loaded in the middle of the loading sequence.
E. RATIONS WITH GROUND HAY:
1. Load molasses (or liquids) first with the mixer not running.
2. Load one (1) commodity ingredient and start mixer.
3. Finish loading commodities, silage, or ground hay. Loading ground hay after mixing
liquids with another commodity will prevent molasses hay balls.
NOTE: These procedures may not work on all rations. Loading sequences may be
changed to give best possible mix.
ATTENTION:
F. Never load the mixer from the right side (side opposite the discharge) with a front end
loader while the mixer is running.