Demco TRUSS-T BOOM 21 User manual

AB20002, Rev 10
09/18
TRUSS-T BOOM
21’, 30’ & 40’

Page 2 AB20002
Thank you for purchasing a Demco spray boom. We feel you have made a wise choice and hope you are completely
satisfied with your new boom. If you have any questions regarding the applications of certain solutions or chemicals,
contact your chemical supplier and follow chemical manufacturer recommendations as well as all licensing and use
restrictions or regulations.
GENERAL INFORMATION
1. Unless otherwise specified, high-strength (grade5)
(3 radial-line head markings) hex head bolts are used
throughout assembly of this sprayer.
2. Whenever terms “LEFT” and “RIGHT” are used in this
manual it means from a position behind sprayer and
facing forward.
3. When placing a parts order, refer to this manual for
proper part numbers and place order by PART NO.,
DESCRIPTION, and COLOR.
WARNING: TO AVOID PERSONAL INJURY OR PROPERTY DAMAGE, OBSERVE FOL-
LOWING INSTRUCTIONS:
Chemicals are dangerous.Know exactly what you’re going to do and what is going
to happen before attempting to work with these products. Improper selection or
use can injure people, animals, plants and soil.
Always wear protective clothing such as coveralls, goggles and gloves when work-
ing with chemicals or sprayer.
Be sure to dispose of all unused chemicals or solutions in a proper and ecologically
sound manner.
Table of Contents
General information................................................................................................................... 2
Warranty Policy, Operator Manuals & Registration................................................................ 2
Safety , Signal Words ................................................................................................................. 3
Equipment Safety Guidelines ................................................................................................... 4
Lighting and Marking ................................................................................................................ 4
Safety Sign Care ......................................................................................................................... 5
Tire Safety.................................................................................................................................... 5
Remember .................................................................................................................................. 5
Before Operation ......................................................................................................................5-6
During Operation......................................................................................................................6-7
Following Operation.................................................................................................................. 7
Highway and Transport Operations........................................................................................8-9
Performing Maintenance........................................................................................................... 9
Bolt Torque................................................................................................................................. 10
Spray Tip Assembly and Installation ....................................................................................... 11
Sprayer Calibration Procedures............................................................................................... 12
Spray Tip Charts ........................................................................................................................ 13
Nozzle Parts Breakdown and List ............................................................................................ 14
21’ - 30’ Truss-T Boom Parts Breakdown and List .................................................................. 15
40’ Truss-T Boom Parts Breakdown and List........................................................................... 16
Sprayer Checklist....................................................................................................................... 17
WARRANTY POLICY, OPERATOR MANUALS, PARTS MANUALS & REGISTRATION
Go online to www.demco-products.com to review Demco warranty policies, operator manuals and register your Demco
product.
INTRODUCTION

Page 3 AB20002
SAFETY
TAKE NOTE! THIS SAFETY ALERT SYMBOL FOUND THROUGHOUT THIS
MANUAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLVING YOUR
PERSONAL SAFETY AND SAFETY OF OTHERS. FAILURE TO FOLLOW THESE INSTRUCTIONS
CAN RESULT IN INJURY OR DEATH!
THIS SYMBOL MEANS
ATTENTION
BECOME ALERT
YOUR SAFETY IS INVOLVED!
DANGER:
Indicates an imminently hazardous situation that, if not
avoided, will result in death or serious injury. This signal
word is to be limited to most extreme situations typically
for machine components which, for functional purposes,
cannot be guarded.
WARNING:
Indicates a potentially hazardous situation 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.
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, require additional copies, or if your manual is damaged, please contact
your dealer or DEMCO, 4010 320th Street, Boyden, IA 51234
ph: [phone] or Toll Free: 1-800-543-3626 Fax: [phone] or 1-800-845-6420
http://www.demco-products.com
SIGNAL WORDS:
This manual uses the following signal words--DANGER,
WARNING, and CAUTION-- with safety messages. The
appropriate signal word has been selected using the
following guidelines.

Page 4 AB20002
SAFETY
SAFETY...YOU CAN LIVE WITH IT
EQUIPMENT SAFETY GUIDELINES
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 you yourself, follow them.
In order to provide a better view, certain illustrations in your owners 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 shield prior to use.
Replace any caution, warning, danger or instruction safety decal that is not readable or is missing.
Do not attempt to operate this equipment under the influence of alcohol or drugs.
Review safety instructions with all users annually.
Operator should be a responsible adult. DO NOT ALLOW PERSONS TO OPERATE OR ASSEMBLE THIS
UNIT UNTIL THEY HAVE DEVELOPED A THOROUGH UNDERSTANDING OF SAFETY PRECAUTIONS
AND HOW IT WORKS.
To prevent injury or death, use a tractor equipped with a roll over protective system (ROPS). Do not paint
over, remove, or deface any safety signs or warning decals on your equipment. Observe all safety signs
and practice instructions on them.
Never exceed 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.
LIGHTING AND MARKING
It is the responsibility of customer to know lighting and marking requirements of local highway authori-
ties and to install and maintain equipment to provide compliance with regulations. Add extra lights when
transporting at night or during periods of limited visibility.
Lighting kits are available from your dealer or from manufacturer.

Page 5 AB20002
SAFETY
SAFETY SIGN CARE
• Keepsafetysignscleanandlegibleatalltimes.
• Replacesafetysignsthataremissingorhavebecomeillegible.
• Replacementpartsthatdisplayedasafetysignshouldalsodisplaycurrentsign.
• Safetysignsareavailablefromyourdistributor,dealerpartsdepartment,orfactory.
How to install safety signs:
• Besurethatinstallationareaiscleananddry.
• Decideonexactpositionbeforeyouremovebackingpaper.
• Removesmallestportionofsplitbackingpaper.
• Aligndecaloverspeciedareaandcarefullypresssmallportionwithexposedstickybackinginplace.
• Slowlypeelbackremainingpaperandcarefullysmoothremainingportionofdecalintoplace.
• Smallairpocketscanbepiercedwithapinandsmoothedoutusingpieceofdecalbackingpaper.
TIRE SAFETY
• Failuretofollowproperprocedureswhenmountingatireonarimcanproduceanexplosionwhich 
may result in a serious injury or death.
• Donotattempttomountatireunlessyouhaveproperequipmentandexperiencetodojob.
• Inatingorservicingtirescanbedangerous.Wheneverpossible,trainedpersonnelshouldbecalled
to service and/or mount tires.
• Alwaysorderandinstalltiresandwheelswithappropriatetypeandloadcapacityto
meet or exceed anticipated weight to be placed on the equipment.
• Referto “TIRE INFLATION CHART” in your owners manual for maximum tire pressure for a Demco
Grain Cart.
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 local authorized dealer or manufacturer.