Raven AccuFlow User manual

AccuFlow HP Patent Pending
AccuFlow™ and AccuFlow HP™
Installation & Operation Manual

While every effort has been made to ensure the accuracy of this document,
Raven Industries assumes no responsibility for omissions and errors. Nor is any
liability assumed for damages resulting from the use of information contained
herein.
Raven Industries shall not be responsible or liable for incidental or consequential
damages or a loss of anticipated benefits or profits, work stoppage or loss, or
impairment of data arising out of the use, or inability to use, this system or any of
its components. Raven Industries shall not be held responsible for any
modifications or repairs made outside our facilities, nor damages resulting from
inadequate maintenance of this system.
As with all wireless and satellite signals, several factors may affect the availability
and accuracy of wireless and satellite navigation and correction services (e.g.
GPS, GNSS, SBAS, etc.). Therefore, Raven Industries cannot guarantee the
accuracy, integrity, continuity, or availability of these services and cannot
guarantee the ability to use Raven systems, or products used as components of
systems, which rely upon the reception of these signals or availability of these
services. Raven Industries accepts no responsibility for the use of any of these
signals or services for other than the stated purpose.
Disclaimer
©Raven Industries, Inc. 2011, 2012

Table of Contents
Manual No. 016-0171-496 Rev. C i
Chapter 1 Important Safety Information................................................. 1
Additional Safety Information ....................................................................................................3
Electrical Safety ...................................................................................................................3
Discharging the AccuFlow™ System ........................................................................................4
Chapter 2 Introduction............................................................................. 5
Overview ...................................................................................................................................5
Standard AccuFlow .............................................................................................................5
AccuFlow HP .......................................................................................................................5
Standard AccuFlow™ Kit Contents ...........................................................................................6
AccuFlow HP™ Kit Contents .....................................................................................................8
Updates .....................................................................................................................................9
Chapter 3 Standard AccuFlow™ Installation....................................... 11
Assembling the AccuFlow™ System .......................................................................................12
AccuFlow™ Kit Assembly .................................................................................................13
Mounting the AccuFlow™ System ....................................................................................15
Emergency Shut-off Rope Installation ...............................................................................16
Vapor and Applicator Line Installation .....................................................................................17
Mounting the Manifold .......................................................................................................20
AccuFlow™ Multi-Section Control .....................................................................................21
Dual Cooler Installation ...........................................................................................................22
Checking for System Leaks ....................................................................................................23
Chapter 4 Standard AccuFlow™ Calibration and Operation ............. 25
Programming NH3 Rate Control .............................................................................................25
Adjusting the Boom Cal .....................................................................................................25
Adjusting the Speed Cal ....................................................................................................25
Adjusting the Meter Cal .....................................................................................................26
Adjusting the Rate Cal .......................................................................................................26
Adjusting the Valve Cal .....................................................................................................27
Charging the AccuFlow™ System ..........................................................................................28
Verifying AccuFlow™ Operation .............................................................................................29
Chapter 5 AccuFlow HP™ Installation................................................. 31
Mounting the AccuFlow HP™ System ....................................................................................32
Emergency Shut-off Rope Installation ...............................................................................35
AccuFlow HP™ Vapor and Applicator Line Installation ...........................................................36
Mounting the Manifold .......................................................................................................40
AccuFlow™ Multi-Section Control .....................................................................................41
Boost Pump Hydraulic Connections ........................................................................................42

Table of Contents
ii AccuFlow™ and AccuFlow HP™ Installation & Operation Manual
Checking for System Leaks .....................................................................................................42
Chapter 6 AccuFlow HP™ Calibration and Operation........................ 43
Programming NH3 Rate Control .............................................................................................44
Adjusting the Boom Cal .....................................................................................................44
Adjusting the Speed Cal ....................................................................................................44
Adjusting the Meter Cal .....................................................................................................44
Adjusting the Valve Cal ......................................................................................................45
Adjusting the Rate Cal .......................................................................................................45
Programming Boost Pump Control ..........................................................................................45
Charging the AccuFlow™ System and Calibrating the Pressure Transducer .........................46
Verifying AccuFlow HP™ Operation ........................................................................................47
Chapter 7 Service and Maintenance..................................................... 49
Discharging the AccuFlow™ System ......................................................................................50
Servicing and Storing the AccuFlow™ System .......................................................................51
Opening the Super Cooler .................................................................................................51
Strainer Maintenance Procedure .............................................................................................54
Relief Valve Replacement Procedure ......................................................................................55
Flow Meter Maintenance and Adjustment ...............................................................................55
Chapter 8 Troubleshooting ................................................................... 57
Chapter 9 System Diagrams ................................................................. 65
Standard AccuFlow™ Diagrams .............................................................................................65
AccuFlow HP™ Diagrams .......................................................................................................74
Chapter 10 Testing Speed and Flow Meter Extension Cables............. 79
Speed Sensor Extension Cable ...............................................................................................79
Testing the Speed Sensor Extension Cable ......................................................................79
Flow Meter Extension Cable ...................................................................................................80
Testing the Flow Meter Cable ............................................................................................80

CHAPTER
1
Manual No. 016-0171-496 Rev. C 1
C hapt er 1 Important Safety
Information
•Read this manual carefully before installing the AccuFlow™ system.
•Review procedures for safe handling and use of anhydrous ammonia (NH3) with a local NH3supplier.
If you are not trained to handle anhydrous ammonia, contact a local NH3 supplier or the appropriate
agricultural department for information on training.
•Please review the operation and safety instructions included with the implement and/or controller.
•Follow safety information presented within this manual and review operation of the AccuFlow system with a
local anhydrous ammonia (NH3) supplier.
•Follow all safety labels affixed to the AccuFlow system components. Be sure to keep safety labels in good
condition and replace any missing or damaged labels. To obtain replacements for missing or damaged
safety labels, contact a local Raven dealer.
•Do not attempt to modify or lengthen any of the system control cables. Extension cables are available from
a local Raven dealer.
•If you require assistance with any portion of the installation or service of Raven equipment, contact a local
Raven dealer for support.
1. Anhydrous Ammonia (NH3) Under Pressure. Anhydrous ammonia can cause severe burning, blindness, or
death. Carefully read and follow all safety instructions and warnings before operating or servicing
equipment.
2. Always wear proper personal protective equipment when working with the AccuFlow system and anhydrous
ammonia. Appropriate protective clothing includes, but is not limited to:
•Goggles or face shield
•Protective suit and gloves
•Respirator
3. DO NOT allow any one to operate the AccuFlow system without proper instruction and training.
NOTICE
DANGER

Chapter 1
2 AccuFlow™ and AccuFlow HP™ Installation & Operation Manual
FIGURE 1. Danger Warning Decal Affixed to AccuFlow Super Cooler (P/N 039-0159-034)
1. Use caution when handling anhydrous ammonia (NH3) products.
a. Stand ‘up wind’ when working around anhydrous ammonia (NH3) and related equipment. Always keep
anhydrous ammonia equipment away from buildings, livestock, and other people.
b. Anhydrous ammonia may cause sickness or death. Never work on NH3equipment in confined spaces.
Seek immediate medical attention if symptoms of illness occur during, or shortly after, use of
anhydrous ammonia products.
c. Keep a source of clean water (at least five gallons) readily available while working with anhydrous
ammonia. In case of exposure, flush exposed skin or eyes immediately with large quantities of water
and seek immediate medical attention.
d. NH3 can be harmful to the environment if not used properly. Follow all local, state, and federal
regulations regarding proper handling of anhydrous ammonia.
2. Always remove the AccuFlow™ system from service before performing maintenance.
a. Thoroughly bleed all system lines and disconnect nurse tank hose before beginning service or
maintenance.
b. Allow a minimum of one (1) hour to fully discharge the system. Verify gauge pressure is at zero
before opening the system.
3. Use extreme caution when opening a previously pressurized system.
Before performing service or maintenance on the AccuFlow system, read and follow the instructions
provided in the Discharging the AccuFlow™ System section on page 4 or page 50 to properly discharge the
super cooler and application lines.
CAUTION

Manual No. 016-0171-496 Rev. C 3
Important Safety Information
1
FIGURE 2. Caution Decal Affixed to AccuFlow Super Cooler (P/N 039-0159-035)
Additional Safety Information
Electrical Safety
CAUTION
Do not reverse power leads. Doing so could
cause severe damage to the equipment.
Always make sure that the power leads are
connected to the correct polarity as marked.
Ensure that the power cable is the last cable to
be connected.

Chapter 1
4 AccuFlow™ and AccuFlow HP™ Installation & Operation Manual
Discharging the AccuFlow™ System
The AccuFlow system must be discharged of all anhydrous ammonia and the system must be completely shut
down before the implement can be transported.
The following procedure outlines the proper method for discharging NH3from the AccuFlow system and
preparing the system for transport, service, or maintenance.
Note: Personal protective equipment such as a respirator, protective suit and gloves are required when
working with anhydrous ammonia products.
Before transporting the AccuFlow™ system or beginning service or maintenance:
1. Toggle the console or vehicle master switch to the off position.
2. Completely close the main shut-off valve on the supply or nurse tank.
3. (AccuFlow HP™ only) Turn off boost pump control by turning the respective product off and closing the
tractor SCV (selective control valve).
Note: Never run the pump without product in the application lines as damage to the pump seals will
result.
4. Resume field application until the pressure gauge reads no remaining pressure is in the AccuFlow system.
5. Verify that the console and/or vehicle master switch, and all section switches, are in the off position.
6. Completely close the emergency shut-off valve on the AccuFlow super cooler.
7. Bleed and disconnect the nurse tank supply hose from the AccuFlow system.
8. Toggle the console master and all section switches to the on position.
9. While standing upwind from the implement, slowly open bleed valve(s) until fully open. Refer to Figure 1 on
page 12 for assistance locating AccuFlow bleed valve(s).
10. Allow a minimum of one (1) hour to fully discharge the system. Verify that the pressure gauge on the
AccuFlow manifold reads zero and the super cooler is not cold to the touch before opening the system. This
ensures that all liquid NH3 has evaporated and pressure has been discharged.
DANGER
DO NOT transport the AccuFlow system while it
is charged with anhydrous ammonia. The
AccuFlow super cooler and product lines must
be completely discharged before transporting
the implement.
DANGER
Use extreme caution when opening a
previously pressurized system. Exposure to
anhydrous ammonia can cause severe burning,
blindness, or death. To avoid injury or death,
always wear proper personal protective
equipment.

CHAPTER
2
Manual No. 016-0171-496 Rev. C 5
C hapt er 2 Introduction
Overview
The Raven AccuFlow™ systems are designed to provide continuous and automatic control of anhydrous
ammonia (NH3) applications via a Raven serial or CAN control system. The rate of application is monitored via
a flow meter and controlled by the Raven console and control valve(s). The operator sets the target application
rate in the Raven control console and the system automatically adjusts for vehicle speed and section status
changes.
Note: To properly measure and control application, anhydrous ammonia must be in a liquid state when it
passes through the flow meter. To remain liquid, anhydrous ammonia must be stored at a
temperature of -28° F [-33° C] or kept under pressure at higher temperatures. To help ensure that
the ammonia is in a liquid state as it passes through the flow meter the AccuFlow super cooler
uses a small amount of anhydrous ammonia from the nurse tank to reduce the temperature of the
ammonia being applied.
The Raven AccuFlow system is available in two configurations to match the NH3application needs:
•Standard AccuFlow™
•High Performance (HP) AccuFlow™
Standard AccuFlow
The standard AccuFlow system is available in one or two valve configurations with single or dual coolers. The
standard AccuFlow system is capable of applying anhydrous ammonia at rates up to 30 gallons per minute
[113 liters per minute] with a single cooler system, or 45 gallons per minute [170 liters per minute] with a dual
cooler system.
Note: System capacity will vary based upon ambient conditions. Contact a local Raven dealer for more
information.
AccuFlow HP
The AccuFlow HP system uses a boost pump to increase the pressure of the anhydrous ammonia in the
application lines which allows the HP system to apply anhydrous ammonia in colder ambient temperatures and
increased speeds. The AccuFlow HP system is also available in one or two valve configurations with dual
coolers.

Chapter 2
6 AccuFlow™ and AccuFlow HP™ Installation & Operation Manual
Standard AccuFlow™ Kit Contents
Please review the following tables for components, parts, and fittings which should have been supplied with the
Raven AccuFlow system. It may be necessary to order some components of the AccuFlow system separately.
Before beginning assembly and installation, verify that all required components have been purchased.
Note: AccuFlow systems will require appropriate flow cabling to connect to the Raven control console.
Contact a local Raven dealer for assistance and information.
To provide the most responsive control of anhydrous ammonia applications when using a multi-
section tool bar, a check valve assembly (P/N 063-0173-030, ordered separately) should be
installed if the section on/off valves are mounted next to the distributor manifolds. Refer to the
diagrams provided in Chapter 3, Standard AccuFlow™ Installation, for location. Contact a local
Raven dealer for more information.
See Chapter 9, System Diagrams, for detailed diagrams and system connections.
AccuFlow
Systems and Kits Single Cooler Kits Dual Cooler Systems
Two Valve Kit Fast Valve Kit Two Valve Kit Fast Valve Kit
Components P/N 117-0171-384 117-0171-386 117-0171-387 117-0171-389
AccuFlow Super Cooler 063-0173-314 1 1 2 2
Fittings for Assembly 117-0171-385 1 1 1 1
Fittings for Assembly, Dual
Cooler 117-0171-388 1 1
Flow Meter, RFM 60S 063-0171-666 1 1 1 1
Valve,
1-1/4” NPT Control 063-0173-202 1 1
Valve, 1-1/4” NPT On/Off 063-0173-203 1 1
Valve, 1-1/4” NPT Fast Valve 063-0173-204 1 1