MAYO 12000 Series User manual

MAYO
WASHER POLISHER
MODEL 12000 SERIES
OPERATOR'S MANUAL
AND PARTS BOOK

MAYO MANUFACTURING, INC. LIMITED WARRANTY
THE FOLLOWING WARRANTIES FOR MACHINERY, EQUIPMENT OR PARTS SOLD BY MAYO MANU-
FACTURING, INC. ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, OR THOSE
WARRANTIES IMPOSED BY STATUE, INCLUDING, BUT NOT LIMITED TO ANY AND ALL IMPLIED
WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND OF ANY
AND ALL OTHER WARRANTY OBLIGATIONS ON THE PART OF MAYO MANUFACTURING, INC. (The
Company).
The Company warrants the machinery, equipment or parts delivered against faulty workmanship or the use
of parts delivered against faulty workmanship or the use of defective materials for a period of one (1) year
from the date of shipment.
The Company's warranties set forth above are the only warranties made by the Company and shall not be
enlarged, diminished or affected by, and no obligation or liability shall arise out of the Company's rendering
technical or other advice or service in connection with the machinery, equipment or parts.
Parts or components furnished to the Company by third persons are guaranteed only to the extent of the
original manufacturer's guarantee to the Company, a copy of which will be supplied to the Purchaser upon
written request to the Company.
LIABILITY
THE COMPANY'S SOLE AND EXCLUSIVE MAXIMUM LIABILITY, AND PURCHASER'S SOLE AND EX-
CLUSIVE REMEDY under the above warranty shall be, at the Company's option, the repair, or replacement
of the machine, equipment or part which is found to be defective due to faulty workmanship or defective
materials, and is returned by the Purchaser to the Company within the warranty period. Shipment both
ways and in transit damage shall be at the purchaser's risk and expense. If the Company elects to repair or
replace the machine, equipment, or part, the Company will have a reasonable time within which to do so.
The remedies set forth above are available upon the following conditions:
1. PurchaserhaspromptlynotiedCompanyupondiscoverythatthemachinery,equipment,orpartsare
defective due to faulty workmanship or defective materials; and
2. PurchaserprovidesCompanywithadetaileddescriptionofthedeciencies;and
3. Company'sexaminationdisclosesthattheallegeddecienciesexistandwerenotcausedbyaccident,
re,misuse,neglect,alteration,oranyotherhazardorbyPurchaser'simproperinstallation,useor
maintenance.
SuchrepairorreplacementshallconstitutefullmentofallCompany'sliabilitytoPurchaser,whetherbased
on contract or tort.
This warranty does not apply to any machine that has been altered outside the factory in any way so as,
in the judgement of Mayo, to affect its operation, reliability or safety, or which has been subject to misuse,
neglect or accident.
In the event the Company breach any other provisions of the Purchase Agreement, the Company's EX-
CLUSIVE MAXIMUM LIABILITY AND PURCHASER'S EXCLUSIVE REMEDY, whether in contract or tort,
otherwise shall not in any event exceed the contract price for the particular machine, piece of equipment
or parts involved.
IN NO EVENT SHALL COMPANY BE LIABLE TO ANYONE FOR SPECIAL, COLLATERAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES FOR BREACH OF ANY PROVISIONS OF THIS CONTRACT OR WAR-
RANTY. SUCH EXCLUDE DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, costs of REMOVAL AND
REINSTALLATION OF ITEMS, Loss of GOODWILL, LOSS OF PROFITS, LOSS OF USE OR INTERRUP-
TION OF BUSINESS.
WARRANTY VOID IF NOT REGISTERED

MAYO
WASHER POLISHER 12000 SERIES
WARRANTY REGISTRATION FORM & INSPECTION REPORT
Date Dealer’s Rep. Signature
Date Owner's Signature
The above equipment and Operator’s Manual have been received by me and I have been thoroughly
instructed as to care, adjustments, safe operation and applicable warranty policy.
DEALER INSPECTION REPORT SAFETY
WHITE
MAYO MFG., INC
YELLOW
DEALER
PINK
CUSTOMER
WARRANTY REGISTRATION (please print)
Thisformmustbelledoutbythedealerandsignedbyboththedealerandthecustomeratthetimeofdeliv-
ery.
Customer’s Name Dealer Name
Address Address
City, State/Province, Code City, State/Province, Code
Phone Number ( ) Phone Number ( )
Contact Name
Model
Serial Number
Delivery Date
I have thoroughly instructed the buyer on the above described equipment which review included the Op-
erator’s Manual content, equipment care, adjustments, safe operation and applicable warranty policy.
____ Guards and Shields Installed and Secured
____ Review Operating and Safety Instructions
____ Inspect Electrical System
____ Water Lines and Fittings Tight
____ WashNozzlesClean
____ Machine Lubricated
____ Drive Belts Tensioned and Aligned
____ Speed Reducer Gearbox Oil Level Checked
____ Check Oil Level in Hydraulic Reservoir

SERIAL NUMBER LOCATION
Always give your dealer the serial number of your Mayo Potato Washer Polisher when ordering parts or
requesting service or other information.
The serial number plate is located where indicated. Please mark the number in the space provided for
easy reference.
Model
Serial Number
SERIAL NUMBER LOCATION

TABLE OF CONTENTS
SECTION DESCRIPTION PAGE
1 Introduction ...........................................................................1
2 Safety.......................................................................................2
2.1 General Safety ...............................................................3
2.2 Equipment Safety Guidelines.........................................4
2.3 Safety Training ...............................................................5
2.4 Safety Signs...................................................................5
2.5 Preparation ....................................................................6
2.6 Installation Safety...........................................................7
2.7 Operating Safety ............................................................7
2.8 Maintenance Safety .......................................................8
2.9 Lock-Out Tag Out Safety................................................8
2.10 Storage Safety ...............................................................8
2.11 Transport Safety.............................................................8
2.12 Electrical Safety .............................................................9
2.13 Hydraulic Safety.............................................................9
2.14 Employee Sign-Off Form .............................................10
3 Safety Sign Locations..........................................................11
4 Operation ..............................................................................14
4.1 To the New Operator or Owner ....................................14
4.2 Machine Components ..................................................15
4.3 General Operation Theory ...........................................16
4.4 Machine Break-In.........................................................17
4.5 Pre-Operation Checklist...............................................17
4.6 Controls........................................................................18
4.7 Machine Preparation....................................................18
4.8 Operating .....................................................................20
4.9 Storage ........................................................................26
5 Service and Maintenance ....................................................27
5.1 Service .........................................................................27
5.2 Maintenance ................................................................34
6 Trouble Shooting..................................................................40
7 Parts List ...............................................................................41
 8 Specications .......................................................................49
8.1 Mechanical...................................................................49
8.2 Bolt Torque...................................................................50
8.3 Hydraulic Fitting Torque ...............................................51
8.4 Electrical Schematic.....................................................52
9 Index ......................................................................................53

1
1 INTRODUCTION
Congratulations on your choice of a Mayo Model 12000 SERIES Potato Washer Polisher and welcome to Mayo's
quality line of potato handling equipment. This equipment is designed and manufactured to meet the needs of
a discriminating buyer in the agricultural industry for the loading and processing of harvest yields.
Safe, efcient and trouble free operation of your new Mayo Potato Washer Polisher requires that you, and anyone
else who will be operating or maintaining the Washer Polisher, read, understand and practice ALL of the Safety,
Operation, Maintenance and Trouble Shooting recommendations contained within this Operator's Manual.
This manual applies to most Model 12000 Series Potato Washer Polishers manufactured by Mayo. Certain
options may be available to specically tailor the Washer Polisher to your operation and may not be included
in this manual. Please contact the manufacturer regarding additional information about these options. Use the
Table of Contents and Index as a guide to nd specic information.
Keep this manual handy for frequent reference and so that it will be passed on to new operators or owners. Call
your Mayo dealer if you need assistance, information or additional copies of this manual.
MACHINE ORIENTATION - The discharge end of the Washer Polisher is the front.

2
Accidents Disable and Kill
Accidents Cost You Money
Accidents Can Be Avoided
Why is SAFETY important to you?
ous situation that, if not avoided, will
result in death or serious injury. This
signal word is to be limited to the most
extreme situations, typically for ma-
chine components that, for functional
purposes, cannot be guarded.
Indicates a potentially hazardous situa-
tion that, if not avoided, could result in
death or serious injury, and includes
hazards that are exposed when guards
are removed. It may also be used to
alert against unsafe practices.
Indicates a potentially hazardous situa-
tion that, if not avoided, may result in
minor or moderate injury. It may also
be used to alert against unsafe prac-
tices.
SIGNAL WORDS:
Note the use of the signal words DANGER,
The Safety Alert symbol identies
important safety messages on your
Mayo Potato Washer Polisher and
in the manual. When you see this
symbol, be alert to the possibility of
personal injury or death. Follow the
instructions in the safety message.
This Safety Alert symbol means
ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
WARNING and CAUTION with the safety
messages. The appropriate signal word for
each message has been selected using the
following guide-lines:
2 SAFETY
SAFETY ALERT SYMBOL
DANGER - Indicates an imminently hazard-
WARNING -
CAUTION -
If you have any questions not answered in this manual or require additional copies or the manual is damaged,
please contact your dealer or Mayo, P.O. Box 497, Bus Highway 2, East Grand Forks, Minnesota, 56721.
(Telephone) 218-773-1234, (FAX) 218-773-6693 or toll free at 1-800-223-5873.
3 Big Reasons

3
2.1 GENERAL SAFETYSAFETY
YOU are responsible for the SAFE operation and
maintenance of your Mayo Potato Washer Polisher.
YOU must ensure that you and anyone else who is
going to operate, maintain or work around the Po-
tato Washer Polisher be familiar with the operating
and maintenance procedures and related SAFETY
information contained in this manual. This manual
will take you step-by-step through your working day
and alerts you to all good safety practices while
operating the Washer Polisher.
Remember, YOU are the key to safety. Good safety
practices not only protect you but, also the people
around you. Make these practices a working part of
your safety program. Be certain that EVERYONE
operating this machine is familiar with the proce-
dures recommended and follows safety precau-
tions. Remember, most accidents can be prevented.
Do not risk injury or death by ignoring good safety
practices.
• Read and understand the Operator's Manual
and all & safety signs before supplying power,
operating, maintaining or adjusting Washer
Polisher.
• The most important safety device on this equip-
ment is a SAFE operator. It is the operator’s re-
sponsibility to read and understand ALL Safety
and Operating instructions in the manual and to
follow these. Most accidents can be avoided.
• A person who has not read and understood all
operating and safety instructions is not qualied
to operate this machine. An untrained operator
exposes himself and bystanders to possible
serious injury or death.
• Do not modify the equipment in any way. Un-
authorized modication may impair the function
and/or safety and could affect the life of the
equipment.
• Think SAFETY! Work SAFELY!
1. Read and understand the Op-
erator's Manual and all & safety
signs before supplying power,
operating, maintaining or adjust-
ing Washer Polisher.
2. Only trained, competent persons shall operate
the Washer Polisher. An untrained operator is
not qualied to operate this machine.
3. Provide a rst-aid kit for use in
case of an accident. Store in a
highly visible place.
4. Provide a re extinguisher for
use in case of an accident.
Store in a highly visible place.
5. Install and properly secure
all guards and shields before
operating.
- Protective shoes
with slip resistant
soles
- Protective glass-
es or goggles
- Heavy gloves
- Hearing protec-
tion
6. Wear appropriate protective gear. This list
includes but is not limited to:
7. Turn machine OFF, shut down and lockout power
supply, relieve hydraulic pressure and wait for all
moving parts to stop before servicing, adjusting,
maintaining, repairing or cleaning. (Safety lockout
devices are available through your Mayo dealer
parts department).
8. Know the emergency medical center number for
your area.
9. Review safety related items with all operators
annually.

4
2.2 EQUIPMENT SAFETY GUIDELINES
1. Safety of the operator and bystanders is one of
the main concerns in designing and developing
a machine. 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 or death, study the following precautions
and insist those working with you, or for you,
follow them.
2. In order to provide a better view, certain photo-
graphs 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.
3. Replace any safety sign or instruction sign that
is not readable or is missing. Location of such
safety signs is indicated in this manual.
4. Never use alcoholic beverages or drugs which
can hinder alertness or coordination while oper-
ating this equipment. Consult your doctor about
operating this machine while taking prescription
medications.
5. Under no circumstances should young chil-
dren be allowed to work with this equipment.
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.
Review the safety instructions with all users
annually.
6. This equipment is dangerous to children and
persons unfamiliar with its operation.The opera-
tor should be a responsible, properly trained and
physically able person familiar with farm machin-
ery and trained in this equipment's operations.
If the elderly are assisting with farm work, their
physical limitations need to be recognized and
accommodated.
7. Never exceed the limits of a piece of machinery.
If its ability to do a job, or to do so safely, is in
question - DON'T TRY IT.
8. Do not modify the equipment in any way. Un-
authorized modication result in serious injury
or death and may impair the function and life of
the equipment.
9. In addition to the design and conguration of
this implement, including Safety Signs and
Safety Equipment, hazard control and accident
prevention are dependent upon the awareness,
concern, prudence, and proper training of
personnel involved in the operation, transport,
maintenance, and storage of the machine. Refer
also to Safety Messages and operation instruc-
tion in each of the appropriate sections of the
auxiliary equipment and machine Manuals. Pay
close attention to the Safety Signs afxed to the
auxiliary equipment and the machine.

5
2.3 SAFETY TRAINING
1. Safety is a primary concern in the design and
manufacture of our products. Unfortunately, our
efforts to provide safe equipment can be wiped
out by a single careless act of an operator or
bystander.
2. In addition to the design and conguration of
equipment, hazard control and accident preven-
tion are dependent upon the awareness, con-
cern, prudence and proper training of personnel
involved in the operation, transport, maintenance
and storage of this equipment.
3. It has been said, "The best safety feature is an
informed, careful operator."
We ask you to be that kind
of an operator. It is the op-
erator's responsibility to read
and understand ALL Safety
and Operating instructions in the manual and to
follow these. Most accidents can be avoided.
4. Working with unfamiliar equipment can lead
to careless injuries. Read this manual, and
the manual for your auxiliary equipment,
before assembly or operating, to acquaint
yourself with the machines. If this machine
is used by any person other than yourself.
It is the machine owner's responsibility to
make certain that the operator, prior to op-
erating:
a. Reads and understands the operator's
manuals.
b. Is instructed in safe and proper use.
5. Know your controls and how to stop auxiliary
conveyors, hydraulic system and any other
auxiliary equipment quickly in an emergency.
Read this manual and the one provided with
your other equipment.
6. Train all new personnel and review instructions
frequently with existing workers. Be certain
only a properly trained and physically able per-
son will operate the machinery. A person who
has not read and understood all operating and
safety instructions is not qualied to operate
the machine. An untrained operator exposes
himself and bystanders to possible serious
injury or death. If the elderly are assisting with
farm work, their physical limitations need to be
recognized and accommodated.
2.4 SAFETY SIGNS
1. Keep safety signs clean and legible at all
times.
2. Replace safety signs that are missing or have
become illegible.
3. Replaced parts that displayed a safety sign
should also display the current sign.
4. Safety signs displayed in Section 3 each have a
part number in the lower right hand corner. Use
this part number when ordering replacement
parts.
5. Safety signs are available from your authorized
Distributor or Dealer Parts Department or the
factory.
How to Install Safety Signs:
• Be sure that the installation area is clean and
dry.
• Be sure temperature is above 50° F (10° C).
• Determine exact position before you remove the
backing paper. (See Section 3).
• Remove the smallest portion of the split backing
paper.
• Align the sign over the specied area and care-
fully press the small portion with the exposed
sticky backing in place.
• Slowly peel back the remaining paper and care-
fully smooth the remaining portion of the sign in
place.
• Small air pockets can be pierced with a pin and
smoothed out using the piece of sign backing
paper.