ARAG 463 Series Quick start guide
SERIE 463 - 465
PROPORTIONAL CONTROL UNIT
FOR ORCHARD SPRAYER APPLICATIONS
INSTALLATION, USE AND MAINTENANCE
02
This manual is an integral part of the equipment to which it refers and must accompany the equipment in
case of sale or change of ownership. Keep it for future reference; ARAG reserves the right to modify the
specications and instructions regarding the product at any time and without prior notice.
•LEGEND SYMBOLS
=Generic danger
=Warning
3
CONTENTS
• Legend symbols...............................................................................................................2
1 Product description .........................................................................................................4
1.1 Intended use............................................................................................................4
2 Functioning of the product .............................................................................................5
2.1 Composition of proportional control units ................................................................5
2.2 Functions of components.........................................................................................6
3 Installation........................................................................................................................7
3.1 Safety regulations ....................................................................................................7
3.2 Installing and connecting the unit ............................................................................7
3.3 Connecting up the system .......................................................................................9
3.4 Connection to control devices................................................................................ 10
4 Setting before use.......................................................................................................... 11
4.1 Electric unit adjustments before operation............................................................. 11
4.2 Adjustment of maximum operating pressure ......................................................... 13
5 Use .................................................................................................................................. 14
5.1 Calibration of operating pressure........................................................................... 14
5.2 Calibrating the metered by-passes ........................................................................15
5.2.1 Metered by-pass calibration tables ..................................................................... 17
6 Maintenance / diagnostics / repairs .............................................................................18
6.1 Flushing the liquid passages of the electric control units.......................................18
6.2 Cleaning the filters .................................................................................................19
6.2.1 Manual cleaning..................................................................................................19
6.2.2 Continuous wash filters........................................................................................20
6.3 Troubleshooting .....................................................................................................23
7 Technical data ................................................................................................................24
7.1 Correspondence between valve parts and maximum valve pressure....................24
8 Disposal at the end of service ......................................................................................24
9 Guarantee terms.............................................................................................................26
4
1 PRODUCT DESCRIPTION
ARAG proportional control units for orchard sprayer applications are composed of single modular
electric or manual valves. They install on sprayers to ensure uniform, adjustable pesticide delivery
even during speed changes (within a given gear).
This booklet describes all the various parts that may be included in the unit.
Some of these parts may not be included in your unit. Likewise, given the modulari-
ty of the product, some types of parts may not be assembled together but are only
alternatives for others.
The illustrations in this booklet are, therefore, provided only as indications.
For detailed information, please refer to the description of the part in question and
not of the unit in general.
ARAG is not liable for direct or indirect damage due to the type of product used for
treatment with its control units.
The operator has full liability for the use of these products and therefore must verify
the safety regulations indicated on the package by the manufacturer of the liquid
and must wear suitable protective clothing (gloves, overall, footwear, helmet, etc.) as
required by law.
ARAG is therefore not liable for any damage or injury to persons, animals or things
as a result of the incorrect use of the products employed, without protection or con-
trary to recommendations.
1.1 Intended use
This device is designed to work on agricultural machinery for crop spraying
applications.
The machine is designed and built in compliance with EN ISO 14982 standard
(Electromagnetic compatibility - Forestry and farming machines), harmonized
with 2014/30/UE Directive.
5
2 FUNCTIONING OF THE PRODUCT
2.1 Composition of proportional control units
A
1
2
B
A
CC
B
1
2
Fi g . 1
1Maximum pressure valve
2a Proportional electric valve
2b Proportional valve
3Discharge valve
4Filter
5Boom section electric valves
6Metered by-passes
7Pressure gauge adapter or pressure transducer connection
IN Intake of liquid for spraying
OUT A Outlet for the maximum pressure valve, proportional valve and discharge valve
OUT B Outlet for metered by-pass
OUT C Filter outlet
U1÷U2 Delivery to sections
6
2.2 Functions of components
1Maximum pressure valve
Eliminates the excess liquid when the set pressure level is reached.
Can be adjusted manually using the appropriate knob; the knob has a different colour according to
the maximum pressure for the valve (refer to par. 7.1 - Correspondence between valve parts and
maximum valve pressure).
2a / 2b Proportional electric valve / proporzional valve
When adjusted with the knob or switch on the unit control (e.g. control box or computer), the unit
controls the spraying pressure: when the vehicle progress speed changes during spraying, the
volume of the liquid distributed per surface unit (litres/ hectare) remains stable.
The increase or reduction in delivery is proportional to the number of revs of the engine with a
tolerance of +- 20%.
3 Discharge valve
It controls product ow through the system.
Gearmotor is operated via a suitable switch installed on the control device of the unit (e.g.: control
box or computer).
• Discharge valve open = liquid sent to the tank;
the suction system, if present, starts functioning.
• Discharge valve closed = liquid sent directly to the circuit for application;
4 Filter
Protects nozzles from dirt, which would eventually reduce their performance.
If the lter is not of the recirculating type, the lter cartridge need not be washed as frequently.
5Boom section electric valves
Open/close the corresponding section; for valves with metered by-passes, the valve closed position
is the same as the discharge position for the respective metered by-pass.
6Metered by-passes
These are adjusted so the level of spraying pressure remains steady when one or more sections
of the boom are closed.
7Pressure gauge adapter or pressure transducer connection (supplied on request)
Connector to which the pressure gauge or pressure transducer mounts, for monitoring the operating
pressure when the discharge valve is closed.
Details of operation will follow: about how to adjust single components, please read
cap. 4 - Setting before use and cap. 5 - Use; for information on suitable control devi-
ces, please read par. 3.4 - Connection to control devices.
7
3 INSTALLATION
3.1 Safety regulations
• Do not install the control unit inside the driver’s cab.
• Install unit so that manual valves can be easily accessed, but well away from opera-
tor’s station.
• The unit’s input ow rate must be less than the maximum ow rate of the discharge
valve.
• The parts and the hoses that are installed on the main pressure line (delivery line)
must be capable of withstanding greater levels of pressure than that of the maxi-
mum pressure valve (refer to par. 7.1 - Correspondence between valve parts and
maximum valve pressure).
• Commission the drainage system according to the maximum delivery ow rate for
the pump. Also install hose whose nominal operating pressure is greater than that
of the drain: any bottlenecks in the drainage system could cause abnormally high
pressure levels.
• Make sure the hoses used are suitable for the diameters of the chosen hose tails.
Use systems to secure the hoses that are suitable for the hoses in question.
It is recommended to install a pressure-relief device (Series 459 on general ARAG
catalogue) on the pump to avoid risks caused by a unit malfunction.
This device does not replace a further safety valve, but it can limit unit damages in
case of sudden over-pressures.
Have the unit installed by qualied personnel.
ARAG is not liable for any damage to equipment or injury to persons, animals or
things caused by incorrect or unsuitable connection of the unit.
Likewise, ARAG is not liable for any damage caused directly or indirectly to
equipment or machinery, or injury to persons, animals or things caused by unsuita-
ble or unt hoses, cable grips, wraps or other accessory.
All forms of warranty are rendered null and void in case of damage to the unit caused
by the above.
3.2 Installing and connecting the unit
Install the control unit and secure it using the appropriate holes located on the brackets, as shown
in Fig. 2.
Fi g . 2
Fixing holes
8
Observe unit mounting positions shown in Fig. 3.
Fi g . 3
STANDARD MOUNTING POSITION
9
3.3 Connecting up the system
Connect the hoses in the system according to the layout shown below. Take care:
- Not to connect backow hoses in the lower part of the tank with the intention of using them as
hydraulic stirrers; only place them in the upper part so the liquid drops down by gravity, as shown
in Fig. 4.
- Make a separate connection of the backow of the valves with the tank.
Fig. 4
10
3.4 Connection to control devices
• The diagram below is for illustrative purposes only; to ensure correct operation,
always refer to the installation manual relevant to the control device you are using.
• Connections and setting into operation are best left to qualied personnel.
ARAG disclaims all liabilities for damage to equipment, persons or animals resulting
from wrong or improper connection of the unit.
• Any damage to the unit resulting from the above will automatically invalidate any
warranty rights.
Proportional control units are designed for connection to ARAG control units (computers, monitors,
displays).
Each control device comes complete with the necessary connection cables and all cables are mar-
ked for ease of identication; please see Fig. 5 for a description of cable marks and their meanings.
Fi g . 5
• Use only the cables supplied with ARAG computers or control boxes.
• Do not pull on the cables. Be careful not to break, tear or shear the cables.
• Check wiring and cables for damage from time to time.
Minimum required cross-section area for cables connected to main control valve is
1.5 mm2; minimum required cross-section area for cables connected to remaining unit
components is 0,75 mm2.
• Any damage resulting from use of unsuitable cables or anyway other than ARAG
cables will automatically invalidate any warranty rights.
• ARAG disclaims all liabilities for damage to equipment, persons, animals or things
resulting from the above.
MPressure transducer
1÷4 Boom section valves
PProportional valve
GDischarge valve
PProportional valve with
YELLOW or GREY collar
GDischarge valve with
RED or LIGHT BLUE collar
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