Valley Center Pivot 7000 Series, Center Pivot 8000 Series, Center Pivot 8120 Series Owner's Manual
Center Pivot
7000, 8000, 8120 Series
Owner's Manual
0994464_M
© 2019 Valmont Industries, Inc., Valley, NE 68064 USA. All rights reserved.
www.valleyirrigation.com
2 Center Pivot 7000, 8000, 8120 Series
TABLE OF CONTENTS
CENTER PIVOT 7000, 8000, 8120 SERIES OWNER'S MANUAL .................................................................... 1
TABLE OF CONTENTS ..................................................................................................................................... 3
SERIES SPAN IDENTIFICATION ...................................................................................................................... 5
EC DECLARATION OF CONFORMITY............................................................................................................. 6
ELECTRICAL SAFETY STATEMENT ............................................................................................................... 7
ABOUT THIS MANUAL ..................................................................................................................................... 7
ANCILLARY EQUIPMENT WARRANTY ........................................................................................................... 7
SAFETY ............................................................................................................................................................. 8
Recognize Safety Information ..............................................................................................................................................8
Safety Messages ..............................................................................................................................................................8
Information Messages ......................................................................................................................................................8
Use of Personal Protective Equipment ................................................................................................................................9
Conductive Materials and Equipment ..................................................................................................................................9
Fall Protection ......................................................................................................................................................................9
Minimum Working Clearance .............................................................................................................................................10
Qualified Person ................................................................................................................................................................10
Irrigation Equipment near Airports and Crop Dusting Aircraft ...........................................................................................10
Overhead Power Lines ......................................................................................................................................................11
Minimal Lockout / Tagout Procedure ..................................................................................................................................12
Sequence of Lockout ......................................................................................................................................................12
Restoring Equipment to Service ..................................................................................................................................... 12
Operate Safely ...................................................................................................................................................................13
Safety Decals .....................................................................................................................................................................17
OVERVIEW....................................................................................................................................................... 21
Pivot ...................................................................................................................................................................................21
Collector Ring and J-Pipe ..................................................................................................................................................21
Pivot Flex ...........................................................................................................................................................................21
Spans ................................................................................................................................................................................22
Overhang (Option) .............................................................................................................................................................23
End Gun (Option) ..............................................................................................................................................................23
Drive Towers ......................................................................................................................................................................23
Water Application ...............................................................................................................................................................24
Span Cable ........................................................................................................................................................................24
Intermediate Tower Boxes..................................................................................................................................................24
Last Tower Box ..................................................................................................................................................................24
Safety Circuit .....................................................................................................................................................................24
Alignment ...........................................................................................................................................................................25
Over Watering Timer ..........................................................................................................................................................26
Stop In Slot Control - Mechanical (Option) ........................................................................................................................26
End Gun Control - Mechanical (Option) ............................................................................................................................26
End Gun and Stop In Slot Control - Electronic (Option) ....................................................................................................27
Public Power Towable (Option) ..........................................................................................................................................27
Drive Unit Mounted End of Field Stop/Auto Reverse (Option) ...........................................................................................28
Auto Reverse/Auto Stop Box (Option).............................................................................................................................28
Pivot Mounted Auto Reverse (Option) ...............................................................................................................................29
OPERATION .................................................................................................................................................... 31
Machine Operation ............................................................................................................................................................31
Part Circle Operation .........................................................................................................................................................31
Towable Pivots ...................................................................................................................................................................32
Towing Option ....................................................................................................................................................................33
Preparing Drive Units for Towing .....................................................................................................................................33
Preparing Drive Units for Operation ................................................................................................................................37
Towing the Skid Tow Pivot ...............................................................................................................................................41
Towing the 2 Wheel E-Z Tow Pivot ..................................................................................................................................47
Towing the 4 Wheel E-Z Tow Pivot - Fixed Tire ............................................................................................................... 53
Towing the 4 Wheel E-Z Tow Pivot - Swivel Tire .............................................................................................................57
Center Pivot 7000, 8000, 8120 Series 3
TABLE OF CONTENTS
MAINTENANCE ............................................................................................................................................... 63
Safety .................................................................................................................................................................................63
Wheel Gearbox 7000 Series..............................................................................................................................................64
Center Drive Gearmotor 7000 Series ................................................................................................................................ 65
Wheel Gearbox 8000/8120 Series.....................................................................................................................................66
Center Drive Gearmotors 8000/8120 Series .....................................................................................................................67
Helical Gearmotor ........................................................................................................................................................... 67
Worm Gearmotor ............................................................................................................................................................ 67
Tire and Wheel ..................................................................................................................................................................68
Towable Hub Lubrication .................................................................................................................................................68
Wheel Lug Nut Torque ....................................................................................................................................................68
Tire Pressures ................................................................................................................................................................68
Barricade ..........................................................................................................................................................................69
Wheel Tracks .....................................................................................................................................................................69
Engine/Generator ..............................................................................................................................................................69
Miscellaneous ....................................................................................................................................................................70
Flex Hose Replacement..................................................................................................................................................70
Bonding Ground Wire .....................................................................................................................................................70
Electrical and Grounding Conductors ............................................................................................................................. 70
Pivot Swivel Lubrication ..................................................................................................................................................70
2 Wheel E-Z Tow Pivot Swivel Bearing Lubrication.........................................................................................................71
Standard and 4 Wheel E-Z Tow Pivot .............................................................................................................................72
Pivot Mounted Auto Reverse Adjustment.....................................................................................................................72
Mechanical Stop In Slot Adjustment ............................................................................................................................73
Pivot Mounted Auto Reverse Adjustment.....................................................................................................................74
2 Wheel E-Z Tow Pivot ....................................................................................................................................................75
Mechanical End Gun Ramp Adjustment ......................................................................................................................75
Mechanical Stop In Slot Adjustment ............................................................................................................................76
Pivot Mounted Auto Reverse Adjustment.....................................................................................................................77
Actuator Bolt Adjustment .............................................................................................................................................77
Pivot Mounted Auto Reverse Example Settings...........................................................................................................78
End Gun Arc Setting Example ........................................................................................................................................79
Machine Alignment ............................................................................................................................................................80
Tower Alignment - Three Tower Method ..........................................................................................................................81
Standard Alignment Adjustment .....................................................................................................................................82
Modified Alignment Adjustment ......................................................................................................................................83
Pivot Floating Alignment Adjustment ..............................................................................................................................84
Setting Alignment Cable Tension ....................................................................................................................................... 85
2 Wheel E-Z Tow Power Supply Installation Example ........................................................................................................87
Span Flushing Procedure ..................................................................................................................................................88
Winterization ...................................................................................................................................................................... 91
Off Season Storage of Hose ...........................................................................................................................................91
Off Season Storage of Electric Cord ...............................................................................................................................91
Regular Maintenance ........................................................................................................................................................92
Pivot ................................................................................................................................................................................92
Span ...............................................................................................................................................................................92
Sprinkler ..........................................................................................................................................................................93
Alignment ........................................................................................................................................................................93
Drive Unit ........................................................................................................................................................................94
Critical Torque Applications .............................................................................................................................................95
Hardware Identification ...................................................................................................................................................95
Torque Chart ................................................................................................................................................................... 95
Annual Maintenance Logs .................................................................................................................................................96
TROUBLESHOOTING ................................................................................................................................... 103
Safety ...............................................................................................................................................................................103
In-Line Shut Down ...........................................................................................................................................................104
Tower Ahead Shut Down .................................................................................................................................................105
Tower Behind Shut Down ................................................................................................................................................106
4 Center Pivot 7000, 8000, 8120 Series
SERIES SPAN IDENTIFICATION
7000
7000
8000
8000
8120 (International Only) 5 ft (1524 mm)
8120 (INTERNATIONAL ONLY)
Center Pivot 7000, 8000, 8120 Series 5
5 ft (1524 mm)
Pipes
PIPES
EC DECLARATION OF CONFORMITY
We: Valmont Industries, Inc.
28800 Ida Street
Valley, NE 68064
+1 402.359.6312
+1 402.359.6143 (Facsimile)
declare under our sole responsibility that the product,
Crop Irrigation System
to which this documentation relates, is in conformity with the following documents:
Machinery Directive 2006/42/EC
Low Voltage Directive 2014/35/EU
Electromagnetic Compatibility Directive 2014/30/EU
The above-referenced equipment is in conformity with all safety-related clauses (Not all clauses reflecting commercial preference are met) of the following documents:
EN 60204-1:2006 Safety of Machinery – Electrical Equipment of Machines
EN 12100:2010 Safety of Machinery
EN 909:1998+A1 Irrigation Machines
Statement regarding Pressure Equipment Directive 97/23/EC:
Serial Number:
Purchase Order:
The Crop Irrigation System is excluded from the scope of the Pressure Equipment Directive, by the
language of Article 1, Sections 3.2, 3.6 & 3.10. This equipment is classified less than Category 1.
Statement regarding RoHS Directive 2011/65/EC:
The Crop Irrigation System is excluded from the scope of the RoHS Directive, by the language of Article
2, Section 4(e), being a “Large Scale Fixed Installation.”
Person Authorized to Compile the Technical File in Europe: Ruediger Claas
Relevant information will be transmitted via email Valmont Industries Inc.
in response to a reasoned request by national authorities Nordring 4
45894 Gelsenkirchen
Germany
+49(151)16716790
Ron Pollak Date of Issue: December 17, 2018
Senior Electrical Engineer Place of Issue: Valley, NE 68064
Valmont Industries, Inc.
6 Center Pivot 7000, 8000, 8120 Series
ELECTRICAL SAFETY STATEMENT
Installation Of The Valley Electric Irrigation Machine - European Union Only
Valmont Industries Inc. does not install a differential (ground fault) circuit breaker in the control panel of the
Valley electric irrigation machine because the standards of protection vary according to country of destination.
The distributor must provide and install a differential (ground fault) circuit breaker that meets the standards of
the country where the Valley irrigation machine is installed.
In the European Union, differential circuit breaker protection is fixed at a maximum of 24 volts.
Good grounding of the Valley irrigation machine is required.
• If resistance to ground is lower than 80 ohms, a differential (ground fault) circuit breaker of 300 mA will meet
requirements.
• If resistance to ground is between 80 and 800 ohms, a differential (ground fault) circuit breaker of 30 mA will
meet requirements.
The power supply installation and inspection of equipment protection components or systems are the responsibility of the installer. Valmont Industries, Inc. is not responsible for the failure of equipment protection components or systems not of their manufacture.
Valley pivot irrigation machines receiving power from a generator must have a cable connected from the irrigation machine structure to a ground rod and another cable from the irrigation machine structure to the ground
terminal on generator in order for the differential (ground fault) circuit breaker to work.
The linear irrigation machines equipped with a generator are not equipped with a ground rod but must have a
cable connected from the linear irrigation machine structure to the ground terminal of the generator in order for
the differential (ground fault) circuit breaker to work.
• The resistance between the irrigation machine and the generator must be substantially below 80 ohms.
About This Manual
Information contained in this manual applies to Valley Center Pivot and its use with the 7000, 8000 and 8120
Series of spans.
For proper operation of the Center Pivot machine, the Control Panel Owner’s Manual and Center Pivot Owner’s
Manual must be used together.
The Control Panel Owner’s Manual includes safety guidelines and explains the basic operation of the control
panel itself, including how to start/stop the machine, change running direction and change water application
amounts.
All Owner’s, operators and maintenance personnel MUST read and understand the Control Panel Owner’s
Manual and the Center Pivot Owner’s Manual.
All information in this manual is based on information available at the time of printing. Valmont Industries Inc.
reserves the right to make changes at any time without notice and without incurring any obligation. Specifications are applicable to equipment sold within the United States and may vary outside of the United States.
Ancillary Equipment Warranty
The owner is responsible for warranty registration of all ancillary equipment such as but not limited to engines,
pumps and generators with its respective manufacturer.
Center Pivot 7000, 8000, 8120 Series 7
SAFETY
Recognize Safety Information
This irrigation equipment may be powered by high voltage which can be extremely dangerous if used improperly. For maximum safety and optimum performance of the machine, all owner’s operator’s and maintenance
personnel must read and understand the owner/operator manual(s), all safety messages in this manual and
safety signs/decals on the machine before operating this equipment.
Anyone assembling, operating, servicing or maintaining this machine must read and understand all operation, maintenance, troubleshooting, testing, installation, assembly instructions and all safety messages in this
manual before operating the machine or beginning any maintenance, troubleshooting, testing, installation or
assembly of components.
These instructions alert you to certain things you should do carefully; if you don’t, you could hurt yourself or
others, hurt the next person who operates the equipment, or damage the equipment.
Safety Messages
Safety messages in this manual are preceded by the hazard symbol and one of three words, danger, warning
or caution. These messages alert you to potential hazards that could hurt you or others and or cause property
damage.
This HAZARD SYMBOL is used to alert you to information about unsafe actions or situations, and may
!
be followed by the word danger, warning, or caution.
!
DANGER
The HAZARD SYMBOL used with the word DANGER, will describe immediate hazards that may result in
severe personal injury or death.
!
WARNING
The HAZARD SYMBOL used with the word WARNING, will describe unsafe actions or situations that may
cause severe injury, death and/or major equipment or property damage.
!
CAUTION
The HAZARD SYMBOL used with the word CAUTION, will describe unsafe actions or situations that may cause
injury, and/or minor equipment or property damage.
Information Messages
Important information messages in this manual are preceded by the word NOTE.
NOTE
The word NOTE is used to alert you to information that describes procedures or tips to help you install, operate
or maintain your equipment properly.
8 Center Pivot 7000, 8000, 8120 Series
SAFETY
Use of Personal Protective Equipment
• People working in areas where there are potential electrical hazards must use, personal protective equipment
that is appropriate for the specific parts of the body to be protected and for the work to be performed. Refer to
U.S. Occupational Safety & Health Administration (OSHA) Regulations (Standards - 29 CFR) Safeguards for
personnel protection. - 1910.335, or applicable national, state or local regulations, for additional information.
• Personal protective equipment must be maintained in a safe, reliable condition and periodically inspected or
tested.
• Protective shields, protective barriers, or insulating materials must be used to protect each person from
shock, burns, or other electrically related injuries while that person is working near exposed energized parts
which might be accidentally contacted or where dangerous electric heating or arcing might occur. When normally enclosed live parts are exposed for maintenance or repair, they must be guarded to protect unqualified
persons from contact with the live parts.
• Safety signs and tags. Safety signs, safety symbols, or accident prevention tags must be used where necessary to warn people about electrical hazards which may endanger them.
Conductive Materials and Equipment
Materials and equipment that may conduct electricity must be handled in a way that will prevent them from
contacting energized power lines, exposed conductors or circuit parts.
• When handling long conductive objects (such as but not limited to truss rods, pipes, angles and ladders) in
areas with energized power lines, exposed conductors or circuit parts, work practices (such as the use of
insulation, guarding, and material handling techniques) must be used to minimize the hazard.
• Portable ladders must have non-conductive side rails.
• Do not wear conductive articles of jewelry and clothing (such as but not limited to watch bands, bracelets,
rings, key chains, necklaces, metalized aprons, cloth with conductive thread, or metal headgear) that could
come in contact with energized power lines, exposed conductors or circuit parts.
Fall Protection
Identify potential fall hazards and determine if fall protection equipment is appropriate for the task, before beginning the work. Pay attention to hazards associated with routine and non-routine tasks. Inspect fall protection
equipment (harnesses, lanyards) and devices (guardrails, tie-off points) before each use. Use fall protection
equipment if required for the job. Be sure the fall protection equipment is right for the task, fits properly, and is in
good condition. Refer to U.S. Occupational Safety & Health Administration (OSHA) Regulations Standards - 29
CFR 1926.500, 1926.501 and 1926.502, or applicable national, state or local regulations for more information.
• When using scaffolds, make sure there is proper access, full planking, stable footing, and guard railing.
• When using a boom lift, keep feet firmly on the platform of a boom lift, use fall protection equipment tied-off
at all times to the guardrail or tie-off point.
• When using a ladder, make sure the ladder is non-conductive and the correct size for the task. Read the
ladder user instructions and be sure the ladder is in good condition. Make sure ladder is set on stable footing
and at the correct angle.
Center Pivot 7000, 8000, 8120 Series 9
SAFETY
Minimum Working Clearance
To reduce the risk of injury, all persons require adequate working clearance around the electrical panel or other
electrical equipment. The table below identifies the minimum working clearance needed. Refer to U.S. Occupational Safety & Health Administration (OSHA) Regulations (Standards - 29 CFR) Safeguards for personnel protection. -1910.303(g)(1)(i), or any other applicable national, state or local regulations, for additional information.
MINIMUM WORKING CLEARANCE 0-600 VOLTS
WIDTH
OF WORKING
CLEARANCE
AREA
30 in (76.2 cm)
MINIMUM OR
WIDTH OF
ENCLOSURE,
WHICH EVER IS
GREATER
Concrete, brick or tile walls shall be considered as grounded.
Qualified Person
A Qualified person is one who, by possession of a recognized degree, certificate, or professional standing, or
who by extensive knowledge, training, and experience, has successfully demonstrated his/her ability to solve or
resolve problems related to the subject matter, the work, or the project.
Only qualified persons may work on electric circuit parts or equipment that have not been de-energized.
Refer to U.S. Occupational Safety & Health Administration (OSHA) Regulations Standards - 29 CFR 1926.32(m)
and 1910.333, or applicable national, state or local regulations for additional information.
HEIGHT
OF WORKING
CLEARANCE
AREA
78 in (198.1 cm)
MINIMUM OR
HEIGHT OF
ENCLOSURE,
WHICH EVER IS
GREATER
MINIMUM WORKING CLEARANCE
IN FRONT OF ELECTRICAL PANEL/EQUIPMENT
EXPOSED LIVE PARTS
ON ONE SIDE OF WORK
SPACE AND NO LIVE
GROUNDED PARTS ON
THE OTHER SIDE.
36 in (91.4 cm) MINIMUM 42 in (107 cm) MINIMUM 48 in (122 cm) MINIMUM
EXPOSED LIVE PARTS
ON ONE SIDE OF WORK
SPACE AND LIVE
GROUNDED PARTS ON
THE OTHER SIDE.
EXPOSED LIVE PARTS
ON ONE SIDE OF WORK
SPACE AND EXPOSED
LIVE PARTS ON THE
OTHER SIDE.
Irrigation Equipment near Airports and Crop Dusting Aircraft
• If any part of the irrigation machine comes within 3200 ft (975 m) of an airport runway, especially the approach (ends) of the runway, additional warning markers may be required. In the United States, CFR Title 14,
Chapter I, Subchapter E, Part 77 – Safe, Efficient Use, and Preservation of the Navigable Airspace describes
when marking is needed.
This document is available at: www.ecfr.gov
• Marking requirements vary depending on the location of the irrigation equipment relative to the runway, the
type of airport (Civil, Military, or Heliport) and other factors. Contact the local airport authority for guidance
and specific recommendations. In the United States, guidelines for marking structures near airports are
published by the Federal Aviation Administration in Advisory Circular AC 70/7460-1L – Obstruction Marking
and Lighting.
Available here: www.faa.gov/regulations_policies/advisory_circulars
• For irrigation machines near private or unregulated airfields, including farm-based airstrips, Valley strongly
recommends complying with the same standards and requirements as Civil airports as shown in Part 77.
• Regulations vary by country, contact your local aviation authority for guidance.
Overhang cables, including overhang back cables are a particular danger. In locations where low-flying
aircraft are likely, such as within 1,500 ft (457 m) of an end of an airport runway, or where crop dusting aircraft
are common, Valley recommends adding obstruction markers to overhang cables to improve their visibility.
For large overhangs (36 ft / 10.97 m Heavy Duty and longer), five 12 in (300 mm) or 20 in (500 mm), aviation
orange marker balls are sufficient. One near the rabbit ears, two in the middle of the back cables and two in
the middle of the highest overhang cables. Refer to Section 3.5 in AC70/7460-1 for additional details. Aviation
marker balls are available online and from a variety of aviation and airport safety equipment providers.
10 Center Pivot 7000, 8000, 8120 Series
SAFETY
Overhead Power Lines
Assembling, towing or transporting irrigation machine components such as but not limited to the pivot point,
linear cart, span/drive unit assemblies, overhangs and/or corner assemblies underneath or near power lines is
extremely dangerous because of the risk of electrocution.
Operating equipment that elevates irrigation machine components, such as but not limited to an aerial lift or
crane, near power lines is extremely dangerous because of the risk of electrocution. Only qualified personnel
should operate this type of equipment. Before operating the equipment, qualified personnel must read the
equipment manufacturers’ operating and safety instructions.
Refer to U.S. Occupational Safety & Health Administration (OSHA) Regulations (Standards - 29 CFR) Cranes
and derricks. - 1926.550, or any other applicable national, state or local regulations for additional information.
• Always presume that any overhead power line is an energized line unless and until the person(s) owning
the line and/or the electrical utility authorities indicate that it is not an energized line and it has been visibly
grounded.
• Before operating any equipment near any power line make sure the line has been de-energized and
visibly grounded at the point of work.
• Electrocution can occur without touching an electrical power line. Electricity, depending on the magnitude,
can jump or become induced into equipment or conductive materials that come in close proximity to,
but do not touch a power line. High wind, lightening, wet ground and other environmental conditions will
increase the possibility of electrocution and require additional consideration.
• Transmitter towers can induce the equipment or materials being handled with an electrical charge. Before
working or operating equipment near transmitter towers make sure the transmitter is de-energized.
• Select the location where the span/drive unit will be assembled to ensure that neither the irrigation machine, or the equipment used during the assembly process, will violate the minimum clearance guidelines.
• Never operate equipment or allow the load, ropes or tag lines within 10 ft (3.05 m) of any power line rated
50 kV or lower whether it is energized or not. For lines rated over 50 kV, the minimum clearance shall be
10 ft plus 0.4 in (1.1 cm) for each kV over 50 kVs.
• Never assemble, tow, transport or allow irrigation machine components underneath or within 10 ft (3.05
m) of any power line rated 50 kV or lower whether it is energized or not. For lines rated over 50 kV, the
minimum clearance shall be 10 ft plus 0.4 in (1.1 cm) for each kV over 50 kVs. Overhang support angles,
cables and spinner drive components regularly extend 10 ft to 12 ft (3.1 m to 3.7 m) above the irrigation
pipeline (span).
• Use barricades to identify areas where interference with overhead power lines could occur. Keep the assembly, towing or transporting of irrigation machine components and the operation of equipment including
load, ropes or tag lines away from any power line, in the distances described above, whether the line is
energized or not.
• Always designate a person to observe clearance between the power line and all equipment being operated or moved in order to give timely warning for all operations to STOP if the minimum clearance is
violated.
Center Pivot 7000, 8000, 8120 Series 11
SAFETY
Minimal Lockout / Tagout Procedure
The following procedure establishes the minimum requirements for the lockout of energy isolating devices
whenever maintenance or servicing is done on machines or equipment. It is used to ensure that the machine
or equipment is stopped, isolated from all potentially hazardous energy sources and locked out before personnel perform any servicing or maintenance where the unexpectedly energized or start-up of the machine or
equipment or release of stored energy could cause injury. All personnel, upon observing a machine or piece of
equipment which is locked out to perform servicing or maintenance shall not attempt to start, energize, or use
that machine or equipment.
When the energy isolating devices are not lockable, tagout should be used and affected personnel must wear
full personal protection.
Refer to U.S. Occupational Safety & Health Administration (OSHA) Regulations (Standards - 29 CFR) Typical
minimal lockout procedures - 1910.147 App A, or applicable national, state or local regulations, for additional
information.
Sequence of Lockout
1. Notify all affected personnel that servicing or maintenance is required on a machine or equipment and that
the machine or equipment must be shut down and locked out to perform the servicing or maintenance.
2. The authorized personnel shall identify the type and magnitude of the energy that the machine or equipment utilizes, shall understand the hazards of the energy, and shall know the methods to control the energy.
3. If the machine or equipment is operating, shut it down by the normal stopping procedure (depress the stop
button, open switch, close valve, etc.).
4. De-activate the energy isolating device(s) so that the machine or equipment is isolated from the energy
source(s).
5. Lock out the energy isolating device(s) with assigned individual lock(s).
6. Stored or residual energy (such as that in capacitors, springs, elevated machine members, rotating flywheels, hydraulic systems, and air, gas, steam, or water pressure, etc.) must be dissipated or restrained by
methods such as grounding, repositioning, blocking, bleeding down, etc.
7. Ensure that the equipment is disconnected from the energy source(s) by first checking that no personnel
are exposed, then verify the isolation of the equipment by operating the push button or other normal operating control(s) or by testing to make certain the equipment will not operate.
!
CAUTION
• RETURN OPERATING CONTROL(S) TO NEUTRAL OR “OFF” POSITION AFTER VERIFYING THE
ISOLATION OF THE EQUIPMENT.
8. The machine or equipment is now locked out.
!
DANGER
• WHEN PERSONNEL WILL BE EXPOSED TO CIRCUIT ELEMENTS AND ELECTRICAL PARTS, A
QUALIFIED PERSON MUST USE TEST EQUIPMENT TO VERIFY THAT THE CIRCUIT ELEMENTS
AND EQUIPMENT PARTS OF THE EQUIPMENT ARE DE-ENERGIZED.
Restoring Equipment to Service
When the servicing or maintenance is completed and the machine or equipment is ready to return to normal
operating condition, the following steps shall be taken:
1. Check the machine or equipment and the immediate area around the machine to ensure that non-essential
items are removed and that the machine or equipment components are operationally intact.
2. Check the work area to ensure that all personnel are safely positioned or removed from the area.
3. Verify that the controls are in neutral.
4. Remove the lockout devices and re-energize the machine or equipment.
5. Notify affected personnel that the servicing or maintenance is completed and the machine or equipment is
ready to be used.
12 Center Pivot 7000, 8000, 8120 Series
SAFETY
Operate Safely
Valley Irrigation machines are designed with safety in mind. However, if this machine is operated incorrectly, it
may pose a safety threat to the operator. A good safety program is much like a chain, it is only as strong as its
weakest link. The manufacturer, dealer, and operator must maintain and improve all safety programs. Following
is a list of safety operating tips which you and all other persons servicing or operating the machine must read
and understand.
!
CAUTION
• DO NOT operate this machine without first reading the Owner’s Manuals for the machine.
• Read all safety messages in this manual and
safety signs on the machine.
• DO NOT let anyone operate this machine without proper instructions.
• Unauthorized modifications may impair the function and/or safety of the machine.
• If you do not understand any part of this manual,
contact your Valley dealer.
EMPLOYEE INSTRUCTION ON SAFETY
It is very important to instruct your employees on the
safe use of this equipment at the time of their initial
assignment to operate it. DO NOT let anyone operate this equipment without proper instructions.
Safety training should be presented annually and
the service manager should ensure employees fully
understand the safety messages and what to do in
case of emergencies.
EMERGENCY STOPPING
The machine can be stopped at any time at any tower
by turning the disconnect switch, located underneath
the tower box, to the OFF position. See Figure 13-1.
!
WARNING
PROPER GROUNDING
DO NOT attempt to start the machine until the electrical service is properly installed and grounded by a
qualified electrician as per the electrical standards.
If the power supplied to the machine is not grounded
properly, severe injury or death can result should an
electrical malfunction occur.
It is your responsibility to ensure that your power
supplier and/or electrical contractor has grounded
the irrigation machine as required by the National
Electrical Code and by applicable local electrical
codes. If a machine is properly grounded and fuse
sizing is correct, there is extremely low probability of
an individual being injured by electrical shock.
5
4
3
Figure 13-1 1 . Disconnect Switch
2
1
Figure 13-2 1 . Ground Rod Installation
1
NOTE
• All 480 VAC, 60 Hz (380 VAC, 50 Hz) power supply services MUST be a 4 conductor service.
Three 480 VAC (380 VAC) power lines and one
ground conductor which is as large as the
power carrying conductors for that service.
2. Service Conductor
3. Copper Ground Rod
Center Pivot 7000, 8000, 8120 Series 13
4. Copper Ground Wire
5. Clamp
SAFETY
Operate Safely
!
DANGER
DISCONNECT POWER WHEN SERVICING
ALWAYS disconnect electrical power before servicing or performing maintenance to the machine.
If you are going to perform maintenance on the machine, YOU MUST shut off and lock the main power
disconnect as shown below. See Figure 14-1.
1
2
Figure 14-1 1 . Main Power Disconnect
2. Lock
!
CAUTION
QUALIFIED SERVICE PERSONNEL
If you do not understand electricity or other parts of
the machine, have qualified service personnel perform any hazardous repairs or maintenance.
!
CAUTION
GUARD ALL POWER TAKE-OFF DRIVES
This includes all belt and power line drives.
Replace any guards and shields removed for maintenance.
!
WARNING
MARK AND GUARD ALL POWER LINES
Do NOT deep rip or chisel near the buried power
service wires.
Do NOT deep rip in a circle at the drive unit. The
deep chisel track will cause severe stresses on the
structure.
If you do deep rip your field, run the machine with the
percent timer at 100% for the first revolution.
!
WARNING
The blue (OSHA safety color code) tag shown below
should also be filled out and attached to the disconnect after locking. See Figure 14-2.
The tag should reveal the name of a person to contact before restoring power to the machine.
DANGER
DO NOT
OPERATE
SIGNED BY:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
DATE:
Figure 14-2
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0992009
FRONT
FRONT BACK
DANGER
DO NOT REMOVE
THIS TAG
REMARKS:
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SEE OTHER SIDE
BACK
SUSPECTED SHORT CIRCUITS
DO NOT touch the machine if you suspect a shortcircuit situation. Call a qualified electrician or an
authorized Valley dealer immediately.
Circumstances which may cause you to suspect hazardous voltage situations may include:
• Physical damage to the machine or span cable
• Recent electrical storms (lightning)
• Unusual operating characteristics of the machine
If you suspect a short circuit due to feeling a rippling
tingle when touching the machine, DO NOT touch
the machine again. Call a qualified electrician or an
authorized Valley dealer immediately.
!
WARNING
LIGHTNING AND THE MACHINE
Stay away from the machine during an electrical
storm. An irrigation machine makes a good path to
earth. It is also probably the tallest object in the field,
which makes it a good lightning receptor!
14 Center Pivot 7000, 8000, 8120 Series
Operate Safely
SAFETY
!
CAUTION
DO NOT OVERSIZE FUSES
Fuses are sized for the protection of a specific machine.
Be certain you have the proper fuse sizes in place
before initial start-up and when replacing fuses.
!
CAUTION
PLUG - IN CONNECTORS
Disconnect power before connecting or disconnecting any plug-in connectors.
!
CAUTION
DO NOT OPERATE AT FREEZING TEMPERATURES
Spraying water has a cooling effect and water will
freeze even though the air temperature is slightly
above freezing.
Shut the machine down at 40 degrees Fahrenheit
(4.5 degrees Celsius). Do not operate machine when
temperature is below 40° F (4.5° C).
• DAMAGE TO EQUIPMENT RESULTING FROM
FREEZE-UP IS NOT COVERED UNDER WARRANTY.
• IT IS IMPORTANT TO MAKE SURE ALL PIPE
DRAINS FUNCTION PROPERLY TO PREVENT
PIPELINE FREEZE-UP DURING COLD WEATHER.
!
CAUTION
AVOID HIGH PRESSURE WATER STREAMS
Avoid body contact with high pressure water streams.
!
WARNING
AVOID CHEMICALS
Avoid exposure to sprinkler spray while chemicals
are being injected into the water. Read EPA Label
Improvement Program (PR Notice 87-1) and all instructions for chemical applications.
If you plan on chemigating, make certain you have
complied with state or local regulations in regard to
safety equipment, certification, operation and calibration of the injector pump. Make certain you have first
aid and fresh water available in case of an accident.
You must also be familiar with the correct cleanup
procedures in case of a spill.
• USE OF PROTECTIVE CLOTHING IS RECOMMENDED WHEN HANDLING CHEMICALS.
SAFETY GLASSES, GLOVES, AND PROTECTIVE OUTERWEAR SHOULD BE WORN WHEN
HANDLING CHEMICALS.
• CONTAMINATION OF THE WATER SUPPLY
MAY OCCUR IF EFFECTIVE SAFETY DEVICES
ARE NOT INSTALLED/USED IN CONNECTION WITH INJECTION EQUIPMENT FOR
CHEMIGATION.
!
DANGER
DRIVE SHAFTS START WITHOUT WARNING
An electric motor on each tower of the center pivot
powers two or more drive shafts connected to wheel
gear drives. These drive shafts start and stop without
warning.
• DO NOT touch rotating drive shalt or shield, Cloth-
ing or limbs may become entangled, resulting in
severe injury.
• DO NOT service the machine until the main dis-
connect is locked in the OFF position.
• ALWAYS replace drive shaft shields after servic-
ing.
• DRIVE SHAFT SHIELDS MUST ALWAYS BE IN
PLACE WHEN OPERATING THE MACHINE.
!
CAUTION
CHECK WHEEL TRACKS BEFORE STARTING
Make sure all objects, livestock or persons are clear
of the machine before starting. Drive trains are powerful and can climb over vehicles, equipment, etc.
Center Pivot 7000, 8000, 8120 Series 15
SAFETY
Operate Safely
!
CAUTION
KEEP CHILDREN AWAY
Irrigation Machines are NOT playground equipment.
Prevent children from playing or climbing around
on the machine. This can be extremely dangerous,
especially if the machine is operating.
!
CAUTION
CHECK MACHINE DIRECTION
DO NOT operate the machine if it moves in the direction opposite to that which was chosen.
Forward should be clockwise and reverse counterclockwise.
!
CAUTION
KEEP WATER OFF ROADWAYS
It is against the law in most states to allow water to
spray on state and county roadways. This is a serious hazard to passing motorists.
If end guns are used, make sure you read and understand the correct procedures for setting the on and
off positions to avoid watering the roadways.
If an end gun is watering a roadway, immediately
discontinue use and adjust the shutoff setting or
call your Valley dealer to repair the end gun shut off
mechanism.
!
CAUTION
AUTO REVERSE OPERATION SAFETY
If the machine reverses direction at a roadway or a
physical object such as a building, tree line, power
pole, etc., then you MUST provide a backup device
to stop the machine if the reversing mechanism were
to fail. See Figure 16-1.
Contact your Valley dealer for more information
concerning physical barricades for machines under
these circumstances.
1
Figure 16-1 1 . Physical Barricade
16 Center Pivot 7000, 8000, 8120 Series
!
CAUTION
PROPER USE OF THE SAFETY OVERRIDE
Caution MUST be taken by the operator when using
the safety override function as it will bypass or disable all of the machine’s automatic safety shutdown
circuits.
NEVER depress and hold the START/STOP SAFETY OVERRIDE switch in the START position for
more than 3 to 5 seconds.
If the machine is not in full view by the operator, do
not use the Safety Override function.
The operator MUST inspect the entire machine between each safety override start attempt.
Repeated safety override start attempts can cause
severe structural damage.
Call your Valley dealer if the machine fails to start.
SAFETY
Safety Decals
These Danger, Warning, and Caution decals appear in various locations on a Valley irrigation machine. You
MUST familiarize yourself and other operators with these safety decals. For replacement of any decal, contact
your local Valley dealer.
Center Pivot 7000, 8000, 8120 Series 17
SAFETY
Safety Decals
WARNING
WARNING
WARNING
WARNING
18 Center Pivot 7000, 8000, 8120 Series
DANGER
DANGER
DANGER
Do not touch rotating drive shaft or shield. Clothing
or limbs may become entangled, resulting in severe
injury.
Do not service until machine is locked in the off
position.
Always replace drive shaft shield after servicing.
Drive Shaft Starts Without Warning!
DANGER
Safety Decals
WARNING
Improper installation of this motor may
result in fire, explosion, electrical shock or
other personal injuries. Read operating
instructions
Disconnect power before maintenance.
Open all circuits before removing conduit
box cover. Be sure motor is properly
grounded per local and national codes.
Do not place fingers or objects near
openings.
Do not use eye bolts or lifting hooks to
lift anything except the product.
SAFETY
Drive Shaft Starts Without Warning!
Do not touch rotating drive shaft or shield. Clothing
or limbs may become entangled, resulting in severe
injury.
Do not service until machine is locked in the off
position.
Always replace drive shaft shield after servicing.
Drive Shaft Starts Without Warning!
Do not touch rotating drive shaft or shield. Clothing
or limbs may become entangled, resulting in severe
injury.
Do not service until machine is locked in the off
position.
Always replace drive shaft shield after servicing.
Drive Shaft Starts Without Warning!
Do not touch rotating drive shaft or shield. Clothing
or limbs may become entangled, resulting in severe
injury.
Do not service until machine is locked in the off
position.
Always replace drive shaft shield after servicing.
DANGER
Drive Shaft Starts Without Warning!
Do not touch rotating drive shaft or shield. Clothing
or limbs may become entangled, resulting in severe
injury.
Do not service until machine is locked in the off
position.
Always replace drive shaft shield after servicing.
Center Pivot 7000, 8000, 8120 Series 19
SAFETY
480 VOLTS
DANGER
Safety Decals
Location: Remote public power installations.
CAUTION
SAFETY SWITCH
MUST BE IN THE
"OFF" POSITION
WHEN HANDLING
PLUG OR CABLE
Location: Remote public power package.
CAUTION
INSPECT CABLE REGULARLY
TO ENSURE THAT IT IS IN
GOOD CONDITION
Location: Remote public power installations.
Location: Long E-Z Tow remote power package.
CAUTION
THIS MACHINE MAY START
AUTOMATICALLY. DO NOT
SERVICE UNTIL MACHINE
DISCONECT IS IN "OFF"
POSITION AND LOCKED.
Location: Automatic Restart Option.
480 VOLTS
Location: Ground Wire Towable Pivots.
DANGER
20 Center Pivot 7000, 8000, 8120 Series
Location: E-Z Tow Remote Power Hardware.
Pivot
Assembly / Part
Functional Area
4 Wheel EZ Tow
Overall Assembled View
Quality checked for better irrigation
The center pivot is the structure which the entire machine rotates around. The water entry point for the
machine is at the riser pipe. See Figure 21-1.
The legs of a conventional center pivot are bolted
to a concrete foundation. Some pivots are towable
with a pivot point that is equipped with wheels so it
can easily be moved from one field to the other. See
Figure 21-1.
Collector Ring and J-Pipe
The collector ring allows the electric cable to rotate
with the pivot and is used with all public power options. See Figure 21-1.
The collector ring consists of brass rings in a stack
that remain stationary and are separated by insulators.
Contact brushes revolve around the brass rings providing continuous flow of current without twisting the
cable as the machine makes revolutions around the
field.
One electrical cable from the collector ring goes
down through the J-pipe, exiting near the bottom of
the riser and then is connected into the public power
panel.
The other electrical cable from the collector ring goes
out of the conduit and then connects into the control
panel.
OVERVIEW
4
1
5
6
7
2
4
5
6
Pivot Flex
A pivot flex allows for flexibility between the pivot
point and the first span. A Pivot Flex is required
where the first drive unit is 4% above or below the
level of the pivot pad. See Figure 21-1.
Grounding Jumper must be installed from the pivot
swivel flange to the span flange.
7
3
7
Figure 21-1 1 . Conventional Center Pivot
2. 4 Wheel E-Z Tow Pivot
3. 2 Wheel E-Z Tow Pivot
4. Collector Ring
4
6
5. Pivot Flex Coupling
6. Control Panel
7. Riser Pipe
Center Pivot 7000, 8000, 8120 Series 21
OVERVIEW
Spans
Water is transported to the irrigation machine through an underground pipe line. The water is then transported
across the field through a pipeline. The pipeline is made up of a series of spans which are connected together.
Each span also consists of a drive tower which moves the pipeline across the field. See Figure 22-1.
A span consists of a water pipeline supported with a bowstring under truss design. Truss rods are attached to
each truss assembly to support and strengthen the pipeline. See Figure 22-1.
1
2
3
5
4
Figure 22-1 1 . Pipeline
2. Span
3. Drive Tower
4. Truss Rod
5. Truss Assembly
The spans are attached to each other with a ball hitch and cup assembly which gives lateral, rotational, and
vertical flexibility between the spans. See Figure 22-2.
The pipelines in each span are connected together with a flexible hose that is held in place with band clamps.
See Figure 22-2.
1
2
3
Figure 22-2 1 . Hitch Ball and Cup Assembly
2. Flexible Hose
4
3. Band Clamp
4. Bonding Ground Wire
22 Center Pivot 7000, 8000, 8120 Series
Overhang (Option)
Typically an overhang is attached to the end of the
span pipe and used for irrigation beyond the span/
drive unit. Support ears and cables provide support
for the overhang. See Figure 23-1.
End Gun (Option)
Typically an end gun is attached at the end of the
overhang and used to increase the area irrigated
beyond the end of the machine. See Figure 23-2.
The end gun is set to cover a specified area. This
area is determined by the forward and backward
angles, which are referred to as the end gun arc settings. See Figure 23-3.
1
2
Figure 23-3 1 . Backward Angle
2. Forward Angle
1
Figure 23-1 1 . Span
2. Drive Tower
3. Overhang
Figure 23-2 1 . End Gun
OVERVIEW
2
1
3
Drive Towers
A drive tower is attached to the end of each span. The tower box acts as a junction box for the span cable and
supplies power to the electric motor on the center drive gearbox. The center drive gearbox drives the wheel
gearboxes. The wheel gearbox drives the tire and wheel. See Figure 23-4.
5
1
Figure 23-4 1 . Drive Tower
2. Center Drive Gearbox
2
3. Tower Box
4. Wheel Gearbox
3
5. Tire and Wheel Assembly
4
Center Pivot 7000, 8000, 8120 Series 23
OVERVIEW
Water Application
A sprinkler chart provides the operator with information about water application depths and pass times at
different percent timer settings.
Water is applied to the field through the sprinklers.
Sprinklers can be mounted on top of the pipeline
or on drop tubes that hang below the pipeline. See
Figure 24-1.
Span Cable
A cable with color coded wires enters and leaves
each tower box. The cable runs the entire length of
the machine and is referred to as span cable. See
Figure 24-2.
The span cable can carry multiple voltages including high voltage depending on control panel and the
country of use.
2
3
1
Figure 24-1 1 . Sprinkler
2. Pipeline
3. Drop Tube
Intermediate Tower Boxes
The intermediate tower control boxes provide power
to the center drive gear motors depending on the
tower box position in relationship to the next tower in
the system. See Figure 24-2.
Last Tower Box
The last tower control box provides power to the
center drive gear motor depending on the percent
timer setting at the control panel. It also completes
the safety circuit. See Figure 24-2.
Safety Circuit
The safety circuit is a 120 volt AC control circuit that
starts in the control panel and runs the entire length
of the machine. See Figure 24-3.
Each drive tower box contains a safety microswitch.
The safety microswitches must be closed to complete the safety circuit.
When the machine is in alignment, the safety
microswitches are closed. If the machine ever becomes too far out of alignment, a safety microswitch
opens, breaking the safety circuit. This stops the
machine to prevent structural damage.
1
3
2
4
Figure 24-2 1 . Tower Box
2. Span Cable Entering Tower Box
3. Span Cable Leaving Tower Box
4. Cable To Drive Motor
1
24 Center Pivot 7000, 8000, 8120 Series
2
Figure 24-3 1 . Safety Circuit
2. Control Panel
3. Safety Microswitch
3
Alignment
There are 3 types of span alignments available,
Standard, Modified and Pivot floating alignment. See
Figures 25-1, 25-2 and 25-3.
The type of alignment used varies depending on the
length of machine, type of field and other application
requirements.
General machine length guidelines are listed below:
• Standard alignment for machines up to 1500 ft
(457 m) long.
• Modified Alignment for machines 1500 ft to
2000 ft (457 m to 610 m) long.
• Pivot Floating Alignment for machines 2000 ft
to 2800 ft (610 m to 853 m) long.
The last tower is the controlling tower. As the end
tower moves, all of the other towers move to maintain
straight alignment.
When the last tower moves, it creates an angular deflection with the next intermediate tower, this closes
the run microswitches and causes the next intermediate tower to move.
This cycle repeats itself throughout the length of the
entire machine.
The result of these cycles is that any tower can be
moving at any time, depending on its relationship
with the next outer span.
OVERVIEW
Figure 25-1 Standard Alignment
Figure 25-2 Modified Alignment - Adjustable Sensitivity
Figure 25-3 Pivot Floating Alignment - Most Sensitive
Center Pivot 7000, 8000, 8120 Series 25
OVERVIEW
Over Watering Timer
The over watering timer is located in the time delay
watering box. See Figure 26-1.
The time delay watering box is normally located at
the next to last tower. It’s function is to act as a safety
device to shut the entire machine off should the end
tower fail to move due to mechanical/electrical failure
or wheel slippage. The timer can be set from 0-60
minutes and is factory set at 30 minutes.
At a setting of 30 minutes, the next to last tower must
cycle on and off before the 30 minute setting expires.
Each time the next to last tower runs, the timer is
reset.
1
Stop In Slot Control - Mechanical
(Option)
The Stop In Slot option stops the machine at a predetermined field location. The Valley Classic and
ClassicPlus Control Panel utilizes the same control
box as used for the end gun shut off. The stop in slot
micro switch is located on the outside of the ring. See
Figures 26-2 and 26-3.
The machine will be shut down when the stop in slot
micro switch contacts the stop in slot ramp.
End Gun Control - Mechanical
(Option)
The Valley Classic and ClassicPlus Control Panel
can turn the end gun on and off through a control box
near the top of the pivot. See Figure 26-3.
The end gun control ramps represent the locations
where the end gun will turn on and off.
Whenever the end gun micro switch rolls up on the
ramp, power is removed from the solenoid at the end
of the machine.
The solenoid controls a valve which shuts the water
supply to the end gun off when power is removed
from the solenoid. The end gun turns back on as the
micro switch rides off the ramp.
Figure 26-1 1 . Over Watering Timer
Figure 26-2 1 . Stop In Slot / End Gun Control Box
2
4
1
1
3
26 Center Pivot 7000, 8000, 8120 Series
Figure 26-3 1 . Stop In Slot Microswitch
2. End Gun Microswitch
3. Stop In Slot Ramp
4. End Gun Ramp
End Gun and Stop In Slot Control - Electronic (Option)
The Valley Control Panels use one of the following
options: encoder, a resolver or Valley GPS position
to determine the position of the pivot in the field. The
field position readings are used to turn the end gun
on and off or to stop at the stop in slot position.
Encoder or Resolver
The encoder and resolver options are installed in the
collector ring. See Figure 27-1.
As the pivot rotates, the collector ring turns which
also turns the shaft of the encoder or resolver. The
encoder or resolver send signals to the control panel.
The Control Panel uses the signal to determine field
position in degrees.
OVERVIEW
Valley GPS Position (Option)
The Valley GPS position option is usually installed at
or near the end of machine. See Figure 27-2.
When the machine is on, Valley GPS receives satellite position data and sends raw coordinates to the
control panel.
The control panel uses the raw coordinates to determine field position in degrees.
Public Power Towable (Option)
The public power towable option includes electrical
receptacles mounted on each pivot pad and electric
cords with plugs wired into an electrical box mounted
on the pivot point. See Figure 27-3.
Figure 27-1 Collector Ring
1
Figure 27-2 1 . Valley GPS Position
4
2
3
1
3
Figure 27-3 1. Electrical Receptacles
2. Pivot Pad
3. Electric Cord and Plug
Center Pivot 7000, 8000, 8120 Series 27
5
4. Electrical Box
5. 2 Wheel E-Z Tow Pivot
OVERVIEW
Drive Unit Mounted End of Field Stop/Auto Reverse (Option)
The drive unit mounted end of field stop is used with
both the end of field stop and end of field auto re-
verse option. See Figure 28-1.
This mechanism will stop the machine when the actuator arm contacts the barricade.
If the auto reverse option is installed, the operator
can choose to either have the machine stop or automatically reverse its direction of travel and continue
to run.
!
CAUTION
• NEVER USE THE SAFETY OVERRIDE BUTTON TO WALK THE MACHINE OFF OF THE
BARRICADE. STRUCTURAL DAMAGE MAY
RESULT.
• SOIL MAY BUILD UP IN THE WHEEL TRACK
RESULTING IN A RAMP EFFECT ALLOWING THE ACTUATOR ARM TO GO OVER THE
BARRICADES. REGULARLY MAINTAIN THE
WHEEL TRACK TO INSURE THE ACTUATOR
ARM ALWAYS CONTACTS THE BARRICADE.
Figure 28-1 1 . Actuator Arm
2
2. Barricade
1
Auto Reverse/Auto Stop Box (Option)
The Auto Reverse/Auto Stop box provides the machine the ability to Auto Reverse and Auto Stop when
the control panel also has the Auto Reverse option.
The Auto Reverse/Auto Stop Box is mounted on the
drive unit mounted end of field stop and is only used
with the Auto Reverse/Auto Stop option.
28 Center Pivot 7000, 8000, 8120 Series
Pivot Mounted Auto Reverse (Option)
The pivot mounted auto reverse option is shown for
the Standard Center Pivot in Figure 29-1 and the 2
Wheel E-Z Tow Pivot in Figure 29-2.
Two heavy duty limit switches are mounted as shown
in the illustrations.
Each switch has a back-up safety contact designed
to stop the machine if the reversing contact or associated circuitry fails to achieve the planned direction
change.
OVERVIEW
2
1
!
CAUTION
• WHEN THE NEED FOR A PRECISE REVERSING POINT IS CRITICAL, SUCH AS AVOIDING
A BUILDING OR TREE LINE, THE DRIVE UNIT
MOUNTED AUTO REVERSE OPTION AND
THE PHYSICAL BARRICADE MUST BE USED.
• PHYSICAL END OF FIELD STOP BARRICADES MUST BE INSTALLED ON ALL PART
CIRCLE MACHINES. THE PHYSICAL BARRICADE SERVES AS A BACK UP IN CASE THE
CIRCUITRY OF THE PIVOT MOUNTED AUTO
REVERSE OPTION SHOULD EVER FAIL. SEE
FIGURE 29-3.
3
Figure 29-1 Standard Center Pivot Mounted Auto Reverse
1. Reversing Switch
2. Reversing Switch
3. Actuator Bolt
1
2
3
Figure 29-2 2 Wheel E-Z Tow Pivot Mounted Auto Reverse
1. E.G.S.O. and S.I.S. Control Box
2. Reversing Switch
3. Actuator Bolt
1
Figure 29-3 1 . End of Field Stop Barricade
Center Pivot 7000, 8000, 8120 Series 29
OVERVIEW
30 Center Pivot 7000, 8000, 8120 Series
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