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
specications 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 qualied 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 unt 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 backow 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 backow of the valves with the tank.
Fig. 4

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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 qualied 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 identication; 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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4 SETTING BEFORE USE
• ONLY use clean water for any intervention or adjustment without any chemical
additives.
• Observe rated power supply voltage.
• Make sure to disconnect power to the device before arc welding; consider physical-
ly disconnecting the power supply cables.
• The hook-up diagram shown in Fig. 5 is for illustrative purposes only; standard unit
adjustment procedure may vary depending on which control device is used.
• All indications on installation, adjustment and operation reported below are inten-
ded for the unit installed in the standard mounting position (Fig. 3).
• For detailed information on the operation or adjustment of the valves included in
the unit, ALWAYS refer to the operating and maintenance instructions manual rele-
vant to your control device.
• All electric valves are internally protected: they automatically turn off in case of
over-voltage; to reset the valves, remove power supply to the unit for about 20 secon-
ds.
• Pressure readings are indicated by the pressure gauge or displayed at the control
device (where unit is equipped with a pressure transducer).
4.1 Electric unit adjustments before operation
1Install pressure gauge or pressure transducer to the seat in the pressure
gauge adapter.
• Pressure gauge:
Screw into pressure gauge adapter seat until rmly in place; do not
overtighten.
Use ARAG pressure gauges with 1/4" M coupling and a suitable end
scale for the maximum operating pressure.
• Pressure transducer:
Use ARAG transducers (code 466112.x00); please read the instructions
manual supplied with the device for full installation information.
• Make sure the at gaskets supplied with the control unit are
correctly positioned in the pressure gauge adapter seat.
• Nylon adapter = n°1 gasket
• Brass adapter = n°2 gaskets
2
Open the discharge valve with the switch on the control unit (set to ON).
CONTINUES

12
3
Turn the knob anticlockwise to completely open the hand wheel of the
maximum pressure valve.
4
Fully open the proportional valve:
• manual proportional valve:
turn the valve’s knob anticlockwise.
• proportional electric valve:
push the respective switch on the
control unit down.
5
Set the relevant switches on the control device to "OFF" to close all
section valves.
6
Open all the compensation cocks by turning their knobs anticlockwise.
7
Completely close the lter outlet by turning the tap clockwise.

13
4.2 Adjustment of maximum operating pressure
Should either of the following be noted during operation:
• pressure above the maximum limit for the system and safety valve;
• abnormal leaks of liquid;
- stop work, switch the pump off and check that the installation and preliminary procedu-
res have been completed correctly.
1Start pump operation.
2
Close the discharge valve with the switch on the control unit
(set to OFF): this delivers product to the unit.
3Gradually increase the number of revs of the pump until the maximum operating level is reached.
4
Fully close the proportional valve:
• manual proportional valve:
turn the valve’s knob clockwise.
• proportional electric valve:
push the respective switch on the
control unit up.
5
Close all the compensation cocks by turning their knobs clockwise.
6
Adjust the maximum pressure valve by turning its knob clockwise until
the pressure of the valve is about 20% above the unit’s maximum
operating pressure.

14
5 USE
For detailed information on operation or adjustment of unit valves, ALWAYS refer to
the operating and maintenance instructions manual relevant to your control device.
Pressure readings are indicated by the pressure gauge or displayed at the control
device (where unit is equipped with a pressure transducer).
5.1 Calibration of operating pressure
1Select the type of nozzle and the relative operating pressure according to the litres/hectare
(l/ha) to be sprayed and the speed of progress.
2With the machine off, start the pump and take it to its operating level.
3
Close the discharge valve with the switch on the control unit
(set to OFF): this delivers product to the unit.
4
Set the relevant switches on the control device to "ON" to open all
section valves.
5Now set the unit’s pressure to the spraying value.
The operating pressure is set with the proportional valve: proceed as follows, depending on the type of
valve mounted to the control unit, to set the desired operating pressure.
• manual proportional valve: turn the knob on the valve itself.
- clockwise to increase the pressure;
- anticlockwise to decrease the pressure.
• proportional electric valve: use the respective switch on the control unit.
- push up to increase the pressure;
- push down to decrease the pressure.
In this case, the propor-
tional valve must be used
for pressure adjustment
and not the maximum pressure
valve since the proportional
valve would not compensate
the variations in speed correctly
should the operating pressure
be too close to the calibration of
the maximum pressure valve.

15
5.2 Calibrating the metered by-passes
These cocks safeguard the constant distribution of liquid even in case of operation with one or two
section valves closed.
Calibration must be carried out EACH TIME the type of nozzle is changed.
The metered by-pass calibration knobs are equipped with a graduated scale. Once each metered
by-pass has been calibrated, enter the value of the graduated scale for the type of nozzle in use in
the tables on page 17. This means that it will not be necessary to recalibrate a given metered by-
pass the next time the same nozzles are used, but simply set it to its value in the tables.
1
Close one section valve by setting its corresponding switch on the
control device to "OFF".
2
Adjust the corresponding compensation cock by turning the
knob until the pressure level is restored on the pressure gauge
that was previously set with all the section valves open.
3
Open and close the section valve (operate its switch on control
device as needed) and make sure that pressure value remains
steady.
If pressure uctuates, repeat the operations described at step 2
until no more uctuation occurs.
CONTINUES

16
4Calibrate ALL section valves before running a treatment; the calibration can be done as follows, depen-
ding on the conguration of the control unit:
• EQUAL section valves:
you need only calibrate one single valve, then set the graduated scales of all the others to the same mark.
• DIFFERENT section valves:
each section valve must be calibrated independently.
• MIRRORED section valves (Fig. 6):
you need calibrate only one part of the control unit (right or left boom, valves Aand B): calibrate the
other part of the boom by setting the corresponding metered by-passes to match the valve settings on
the section of boom already calibrated (Fig. 6).
Fi g . 6
If the types of nozzle are not changed, the adjustments made will safeguard a uni-
form distribution of liquid even when spraying needs differing levels of operating
pressure.

17
5.2.1 Metered by-pass calibration tables
NOZZLE
TYPE COLOR REF. NOZZLE TYPE COLOR REF. NOZZLE TYPE COLOR REF.
NOZZLE
TYPE COLOR REF. NOZZLE TYPE COLOR REF. NOZZLE TYPE COLOR REF.
NOZZLE
TYPE COLOR REF. NOZZLE TYPE COLOR REF. NOZZLE TYPE COLOR REF.

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6 MAINTENANCE / DIAGNOSTICS / REPAIRS
• Disconnect power to the control unit before washing.
• Wear protective gloves, goggles and clothing.
• Do not use high-pressure water jets to wash the outside of the control units.
• Sponge with neutral detergent and rinse.
• Wait until unit is fully dry before restoring electric connections.
• ARAG is not liable for any damage caused to equipment or injury to persons, ani-
mals or things caused by cleaning with unsuitable products. All forms of warranty
are rendered null and void in case of damage to the unit caused by the above.
6.1 Flushing the liquid passages of the electric control units
Wash the passages inside the unit thoroughly after each application, with clean water or, if neces-
sary, water with a specic detergent.
Follow the indications in the table below for the frequency of cleaning:
MANUAL CLEANING FREQUENCY
Clean with clean water After each use
Clean lter After each use
Cleaning the lter (recirculating type)
• Closed cock:
after each use
• Open cock:
every month or every 100 hours
Cleaning using a specic detergent Every month or every 100 hours
• Check that gaskets are sealing correctly while washing the unit. Look for abnormal leaks. If any leak
is found, have the unit uninstalled by qualied personnel and bring it to the nearest service center.
• Send the unit to your Service Centre to be checked over and for the valve gaskets to be replaced,
if necessary, once a year or every 500 hours of operation of the system.
Units must be cleaned thoroughly prior to being sent to a service centre for control
or repair.
Should the Service Centre receive a dirty unit, it will have the right to refuse delivery
and repair of the same even if it is covered by guarantee.

19
6.2 Cleaning the lters
6.2.1 Manual cleaning
Clean the lter regularly according to the instructions described below:
1Protective gloves, goggles and
clothing must be worn.
2Stop the machine and discon-
nect power to the unit.
3Empty any remaining products
out of the system.
4Unscrew cover Aanticlockwise
and remove the cover and
cartridge B.
5Wash the cartridge Band the
lid Aunder running water.
6Remove any trapped items
under running water.
Do not use compressed air or
sharp objects for cleaning the
cartridge.
Take care not to damage the mesh when cleaning the lter: should you notice any
damage to the mesh, replace the cartridge with a new one.
Refer to the ARAG spare parts catalogue for references for ordering spare parts.

20
6.2.2 Continuous wash lters
Before doing anything, make sure the lter’s discharge outlet is connected to the
tank with a hose.
The unit can be washed in the following two ways:
• Continuous wash (recirculating):
The lter cock is left open so that cleaning is carried out during spraying.
To use the lter in this mode, check that the unit’s input owrate is sufficient to feed
both the unit and the lter outlet itself.
This check is carried out as follows:
1Protective gloves, goggles and clothing must be worn.
2Completely open the lter outlet by turning the tap anticlockwise.
3Follow the steps for the adjustment of operating pressure (plea-
se see par. 5.1 - Calibration of operating pressure).
4After the calibration of the operating pressure, the drain cock
can be left open so that the lter is cleaned automatically during
the use of the unit.
Should it prove impossible to reach operating pressure, the
lter cannot be used in this way and must be cleaned by
"regular cleaning".