Hardi ALPHA 2000 User manual

ALPHA
Instruction book
670701-GB-97/1
Illustrations, technical information and data in this book are to the best of our
belief correct at the time of printing. As it is HARDI INTERNATIONAL A/S policy
permanently to improve our products, we reserve the right to make changes in
design, features, accessories, specifications and maintenance instructions at any
time and without notice.
HARDI INTERNATIONAL A/S is without any obligation in relation to implements
purchased before or after such changes.
HARDI INTERNATIONAL A/S cannot undertake any responsibility for possible
omissions or inaccuracies in this publication, although everything possible has
been done to make it complete and correct.
As this instruction book covers all models, features or equipment, which are
available in certain countries only can be shown. Please pay attention to para-
graphs dealing with precisely your model.
Published and printed by HARDI INTERNATIONAL A/S
EC Declaration of Conformity
Manufacturer,
HARDI-EVRARD
301, Rue du 21 Mai 1940
F - 62990 BEAURAINVILLE
Importer
declares that the following product
SPRAYER Model ALPHA 2000 and ALPHA 2500
was manufactured in conformity with the provisions in
the COUNCIL DIRECTIVE on mutual approximation of
the laws of the Member States on the safety of ma-
chines, 89/392/CE, 91/368/CE og 93/368/CE
was manufactured in conformity with special reference
to the Directive on essential safety and health require-
ments taking into account the following standards:
EN 292-1
EN 292-2
Furthermore, the owner of the material must keep this
manual as long as the machine is in his possession,
and when passing it on to a possible new owner he
must also pass on the manual.
Beaurainville, 1st January, 1997.
The director
HARDI-EVRARD S.A.

2
ALPHA
(4-wheel steering only) ...........................................................10
Control lamp, 4-wheel steering, (if fitted) ...............................10
Pedal, 4-wheel steering (if fitted)............................................10
Switch for Electronic Anti-Spin System, SAPE (if fitted).........10
Use of cab heating .................................................................10
Use of air conditioning (if fitted)..............................................10
Windscreen wiper/washer ......................................................10
Pilot lever ............................................................................... 11
Fuel tank ................................................................................ 11
Straw dividers (optional extra)................................................ 11
Optional tyre mountings ......................................................... 11
Track width ............................................................................. 11
Number plate(s) ..................................................................... 11
Driving .........................................................................................11
Before starting the engine ...................................................... 11
Starting the engine .................................................................12
To stop the engine ..................................................................12
Propulsion ..............................................................................12
Braking ...................................................................................12
Electronic anti-spin, SAPE (if fitted) .......................................12
Steering ..................................................................................13
Front Wheel Steering .............................................................13
Four Wheel Steering ..............................................................13
Spraying ......................................................................................13
Before taking the sprayer into operation ................................13
Spraying circuit operating diagram.........................................13
Self-cleaning filter...................................................................14
Use of MANIFOLD valve system ..........................................14
Filling of rinsing tank ..............................................................15
Filling of clean water tank.......................................................15
Filling of main tank .................................................................15
Filling through tank lid ............................................................15
Suction Filling Device. ............................................................15
Fast Filling Device..................................................................16
Adjustment of operating unit ..................................................17
Filling of chemicals.................................................................17
Filling by HARDI FILLER chemical inductor...........................18
Operating the boom (all models).................................................19
Unfolding of the boom ...........................................................20
Folding of the boom ..............................................................20
Use of rinsing tank and rinsing nozzles..................................20
Technical Residue ..................................................................21
Operation of the tank drain valve ...........................................21
Rinsing tank, draining.............................................................21
Maintenance ...............................................................................22
Fuel and lubricants storage....................................................22
Tilting of the cab .....................................................................22
Maintenance during the running-in period..............................23
Regular, preventive maintenance...........................................23
Shock absorbers (wheel suspension) ....................................32
General maintenance with flexible intervals...........................33
Electrical system maintenance ...................................................37
Off-season storage .....................................................................42
Preparation after off-season storage......................................43
Emergency operation of the sprayer ......................................43
Trouble shooting .........................................................................44
Operational problems, spraying equipment ...........................44
Technical specifications .............................................................46
Contents
Foreword .......................................................................................2
Use of the sprayer.........................................................................2
Safety precautions ........................................................................2
Roadworthyness ......................................................................4
Plant protection chemicals .......................................................4
Identification plates .......................................................................4
Warranty .......................................................................................4
International Pictorial Symbols......................................................4
Controls, instruments and switches ..............................................5
Driver’s seat .............................................................................5
Steering column .......................................................................5
Controls and switches, steering column...................................6
Revolution counter and hour meter ..........................................6
Start key ...................................................................................6
Hazard warning signal device ..................................................6
Alternator charging control lamp ..............................................6
Engine oil pressure control lamp ..............................................6
Head lamps, main beam ..........................................................6
Directional indicator control lamp .............................................6
Position lamps or dipped beam, control lamp ..........................6
Rotating warning beacon control lamp.....................................6
Engine coolant thermometer ....................................................6
Fuse box ..................................................................................7
Multi functional control stalk .....................................................7
Rotating amber warning beacon switch ...................................7
Controls and switches, dash board ..........................................7
Adjustable air flow louvres .......................................................9
Console for HARDI PILOT .......................................................9
Boom function switches ...........................................................9
4-wheel steering switch ............................................................9
Engine throttle lever .................................................................9
Engine STOP warning lamp .....................................................9
Spraying pump control lamp ....................................................9
Engine pre-heating control lamp ..............................................9
Battery isolator switch control lamp..........................................9
Windscreen wiper switch..........................................................9
Working lamps switch...............................................................9
Wind screen washer switch......................................................9
Auxiliary lights switch ...............................................................9
Windscreen washer reservoir...................................................9
Fuse box (dash board) .............................................................9
On/off switch HARDI PILOT .....................................................9
Cab interior lamp ......................................................................9
Fan control 3-speed switch ......................................................9
Fuse box ..................................................................................9
Air conditioning warning buzzer ...............................................9
Air conditioning control lamp “overpressure”............................9
Air conditioning control lamp “low pressure” ............................9
Parking brake lever ..................................................................9
Air conditioning temperature control ......................................10
Cab heater / defroster ............................................................10
Cab air flow louvres................................................................10
Spraying pump switch ............................................................10
Hydrostatic transmission control lever ...................................10
Front wheel motors fast / slow switch ....................................10
Rear wheel motors fast / slow switch .....................................10
Control lamp, realignment of front wheels
(4-wheel steering only) ...........................................................10
Control lamp, realignment of rear wheels

3
ALPHA
Foreword
We congratulate you for choosing HARDI
plant protection equipment. The reliability and
efficiency of this product depend on your
care. The first step is to carefully read and pay attention
to this instruction book. It contains essential information
for the efficient use and long life of this quality product.
As the instruction book covers all ALPHA models,
please pay attention to the paragraphs dealing with pre-
cisely your model.
All instructions related to service and maintenance of
the machine is described in this instruction book. If you
do not feel absolutely confident carrying out these jobs
please contact your HARDI dealer. He has trained serv-
ice personnel, workshop facilities, spare parts, tools and
instruments that are required to supply the best service.
If there are several operators of the machine please en-
sure that all operators have read this instruction book
before using the machine. If selling the machine, please
let this book follow the machine to the new owner.
Use of the sprayer
This agricultural sprayer is designed for application of
plant protection chemicals and liquid fertilizers at agri-
cultural crops. The sprayer must be used for this pur-
pose only. It is not allowed to use the sprayer for any
other purposes.
Please observe rules regarding driver’s license for driv-
ing on public roads.
If no local rules of holding a sprayer operator license, it
is strongly recommended to be educated in correct plant
protection and safe handling of plant protection chemi-
cals in order to carry out spraying jobs without unneces-
sary risk for persons and environment.
Safety precautions
Before using your ALPHA sprayer, note the
following safety precautions and recom-
mended safe operating practices.
General
Watch for this symbol . It means WARNING, CAU-
TION, PAY ATTENTION. Your safety is involved, so be
alert!
Read and pay attention to the instruction book be-
fore starting and operating the sprayer. It is equally
important that other operators of this equipment
read and understand this book.
If any portion of this instruction book remains un-
clear after reading it, contact your HARDI dealer for
further explanation before using the equipment.
Use the handholds and steps when getting on and
off the machine to prevent falls. Keep steps and
platform clear of mud etc.
Do not permit passengers to ride on the machine.
There are no safe places for others than the driver.
Keep children away from the sprayer.
Driving the machine.
Make sure that nobody is carrying out service or
maintenance jobs on the sprayer before starting the
engine.
Make sure, that parking brake is activated, and the
pilot lever is in neutral before starting the engine.
Ensure that the on/off valve on the spraying circuit is
switched off before starting the engine.
The hydrostatic transmission control lever has a
safety start switch. Do not by-pass this switch. If out
of order, get the switch repaired instantly.
Do not start the engine or operate control levers
standing outside the cab. Always sit in the driver
seat when starting and operating the levers.
Be careful not to accidentally operate the hydrostatic
transmission control lever. This will result in unex-
pected movements of the machine.
Do not leave the driver seat while the machine is
moving.
Apply the parking brake, and switch off the engine
before getting off the machine.
Do not let the engine run in closed buildings unless
an exhaust gas aspirator is connected to the ex-
haust pipe. Exhaust gases in closed rooms are le-
thal.
If the steering malfunctions, stop the machine in-
stantly.
Diesel fuel
Do not remove the fuel tank cap when the engine is
running or hot.
Do not smoke or use open fire when refuelling the
machine.
Avoid spilling of fuel. Do not leave the machine
when refuelling. Wipe up spilled fuel instantly.
Do not fill the fuel tank to the edge. Allow a little
room for expansion.
Tighten the fuel cap properly.
Use only the genuine HARDI fuel cap. If the original
cap is lost, replace instantly with a new genuine
HARDI fuel tank cap. Do not use a non-approved
cap. Never plug with a piece of cloth or similar.
Use only pure diesel fuel of approved quality. Do
not mix diesel fuel with petrol or alcohol. These mix-
tures can be explosive and will cause severe injury
and damage.
Keep fuel lines in order. Repair possible leaks im-
mediately.

4
ALPHA
Operating the spraying equipment
Do not eat, drink or smoke whilst spraying or work-
ing with contaminated equipment.
Do not enter the sprayer tank.
Do not drive the machine near open water reser-
voirs (rivers, lakes etc.). Spilled chemicals can
stream into the water causing serious contamination
of environment.
Do not fill the sprayer from open water reservoirs.
Malfunctioning or faulty operated filling process can
siphon chemicals back into the water. Fill from
closed reservoir (e.g. mobile water trailer, overhead
tank) instead.
Do not let the filling hose enter the tank. Keep the
end of the hose at least 10 cm. above the tank filling
hole to avoid risk of tank content being siphoned
back, contaminating water supply lines and well.
Do not fill chemicals nearby the well. Any overflow
can contaminate the well.
Do not store chemicals nearby the well. Store
chemicals behind locked doors to avoid unauthor-
ized persons and children to access the chemicals.
If the sprayer is filled with chemicals at the same
place every time, establish a filling place with con-
crete surface which is able to retain possible spillage.
Keep the cab door closed during spraying. The cab
has built-in active carbon filters, which to some ex-
tent protects against chemicals.
Always read the chemical label prior to use and fol-
low instructions given on the label.
Wear personal protection as stated on the chemical
label. As a minimum always gloves, overalls, rubber
boots, and face protection shield.
Chemicals will penetrate gloves, rubber boots etc.
after a certain period of contact. This period will vary
from a few hours to several days depending on rub-
ber material and chemical used. Be familiarized with
the quality of your protection equipment, and renew
them according to the instructions.
Wash your gloves before taking them off. Do not
touch the contaminated outer side of the gloves with
bare hands when taking them off.
Keep the cab clean inside. Take off contaminated
clothes and wash hands before entering the cab. Do
not touch steering wheel, controls and instruments
with contaminated hands or gloves. Wear gloves
when touching any part of the machine outside cab.
If chemicals are splashed over you, remove soaked
clothing instantly and wash with soap and water in-
stantly. Plant protection chemicals will penetrate the
skin, and affect your health. Consult chemical label
regarding precautions to be taken against poisoning.
Watch out for overhead electrical conductors when
operating the boom. A boom wing hitting a high
voltage conductor is lethal!
If you need to check anything during spraying, e.g.
nozzle clogging, close the main on/off valve and
drive a few metres forward before stepping out. This
to avoid walking in the crop just sprayed.
Wash and change clothes after spraying jobs.
In case of poisoning, seek medical advice or call an
ambulance. Bring chemical label or container for
identification of chemical.
Cleaning the machine
Never wash the machine where washing water can
flow into lakes, rivers etc. causing contamination of
the environment.
Wash the machine on concrete surfaces where
washing water can be retained and drained into a
reservoir for controlled spreading on the field or
proper disposal.
If no washing spot with concrete surface is avail-
able, avoid accumulation of pesticide residues in
the soil. Do not wash the machine on the same spot
every time. Huge accumulations will result in pesti-
cides seeping down in the ground water.
Wear protective clothing when washing the equip-
ment.
Wash the entire machine inside and outside to re-
move all chemicals as much as possible.
Do not enter the spraying tank for washing.
Wash and change clothes after spraying and wash-
ing spraying equipment.
Servicing the machine
Rinse and wash equipment after use and before
servicing.
Depressurize equipment after use and before serv-
icing.
The cooling system operates under pressure which
is controlled by the radiator cap. It is dangerous to
remove the cap while the system is hot. Always
loosen the cap slowly and allow the pressure to es-
cape before removing the cap completely.
Do not smoke or use open fire when refuelling the
machine.
Do not smoke or use open fire nearby the battery or
cold weather starting aids. Use battery charger or
jumper cables according to instructions.
Escaping hydraulic fluid or diesel fuel under pres-
sure can penetrate the skin causing serious injury.
Do not use your hands to check for leaks. Use a
piece of paper or card board to search for leaks. If
fluid is accidentally injected through the skin gan-
grene may result. Seek medical advice immediately.

8
ALPHA
• The position lamps’ and head lamps’ dipped beam
are switched on by turning the multi-functional lever
and is indicated by the pilot lamp
• The main beam is activated by pressing the lever
downwards and is indicated by the pilot lamp.
• To flash the main beam pull the lever upwards.
• The directional indicators are operated by pushing
the lever forward (right) or backward (left) and indi-
cated by the pilot lamp.
• The horn is activated by depressing the stalk end.
Rotating amber warning beacon switch
Is recommended to be used when driving on public
roads. Note local regulations regarding use of rotating
warning beacon.
Controls and switches, dash board
1. Adjustable air flow louvres
2. Console for HARDI PILOT
3. Boom outer section folding, left
4. Boom inner sections folding
5. Boom outer section folding, right
6. Boom pendulum locking device
7. 4-wheel steering switch
8. Engine throttle lever
9. Not used
10. Not used
11. Engine STOP warning lamp
12. Spraying pump control lamp
13. Engine pre-heating control lamp
14. Battery isolator switch control lamp
15. Windscreen wiper switch
16. Working lamps switch
17. Wind screen washer switch
18. Auxiliary lights switch
19. Not used
20. Screen wash reservoir
21. On/off switch for HARDI PILOT
22. Fuse box
23. Cab interior lamp
24. Fan control 3-speed switch
25. Fuse box
26. Air conditioning warning buzzer
27. Air conditioning “over pressure” control lamp
28. Air conditioning “low pressure” control lamp
29. Parking brake lever
30. Air conditioning temperature control
31. Cab heater / defroster
32. Cab air flow louvres
33. Spraying pump switch
34. Hydrostatic transmission control lever
35. Hydrostatic front wheel motors Fast / Slow switch
36. Do. Rear
37. Control lamp, realignment of front wheels
(4-wheel steering)
38. Control lamp, realignment of rear wheels
(4-wheel steering)
39. Control lamp, 4-wheel steering.
40. 4-Wheel steering AUTO/MANUAL switch
41. Pedal, 4-wheel steering
42. Switch for Electronic Anti-Spin System, SAPE
• Overload of engine - reduce driving speed
• Clogged cooler radiator fins - clean the radiator
• Coolant level low - refill with hot coolant to correct
level
• Engine oil level low - refill to correct level.
If none of the above is solving the problem, call the en-
gine service agent.
Fuse box
Regarding fuse diagram - see “Electrical system mainte-
nance”
Multi functional control stalk
11
41
2
T060-0004
T064-0007
T060-0021

10
ALPHA
Adjustable air flow louvres
Can be adjusted to obtain optimal air circulation in the
cab.
Console for HARDI PILOT
See separate manual for operating instructions for
HARDI PILOT.
Boom function switches
For operation, see section “operating the boom”.
4-wheel steering switch
For operation see section “driving”.
Engine throttle lever
To be used for maintaining the correct engine revolu-
tions and forward speed during filling and spraying.
A second throttle lever is situated on the left hand side
of the machine under the platform, and can be used
during filling of water and chemicals.
Engine STOP warning lamp
This lamp indicates a malfunction:
• Engine coolant temperature too high
• Engine oil pressure too low
• Hydraulic oil level too low
If the STOP lamp should light, stop the machine and en-
gine instantly and sort out the cause to the failure.
Spraying pump control lamp
Lights when diaphragm spraying pump is engaged.
A second lamp is situated at the machine left hand-side
at the throttle and pump controls.
Engine pre-heating control lamp
The engine pre-heating device is functioning automati-
cally. Start the engine when the pre-heating control
lamp switches off.
Battery isolator switch control lamp
This lamp indicates that battery isolator switch is on,
and 12V is present in the electrical circuit.
Windscreen wiper switch
The windscreen wiper has three positions:
• Off
• Normal
•Fast
Working lamps switch
Controls front fitted working lamps. The lamps can only
be switched on when at least the position lamps are
switched on. The working lamps must be switched off
on public roads.
Wind screen washer switch
Controls the windscreen washer. Use plenty of screen
wash before starting the wiper to avoid scratches in the
windscreen.
Auxiliary lights switch
Switch to be used if extra working lamps are to be fitted.
Windscreen washer reservoir
To be filled with clean water or an approved screen
wash. In freezing conditions use frost proof screen
wash. Do not use engine antifreeze.
Fuse box (dash board)
For details see section “Electrical system maintenance”.
On/off switch HARDI PILOT
For switching on and off the HARDI PILOT. This switch
by-passes the start key.
Cab interior lamp
The cab interior light switch is situated at the frame of
the lens.
Fan control 3-speed switch
Controls the cab fan speed.
0 Off
1Low
2 Normal
3 Full
The air conditioning can only be operated when the fan
is set at pos. 1-3.
Fuse box
For details see section “Electrical system maintenance”
Air conditioning warning buzzer
Will buzz simultaneously with control lamp for “ Air con-
ditioning overpressure” See paragraph “Air conditioning”
Air conditioning control lamp “overpressure”
If the refrigerant pressure in the air conditioning circuit
becomes too high, this warning lamp will light. See para-
graph “Air conditioning”
Air conditioning control lamp “low pressure”
If the refrigerant level or pressure in the air conditioning
circuit is too low, this lamp will light. See paragraph “Air
conditioning”
Parking brake lever
The parking brake is working on all four wheels.
Up = Engaged
Down = Disengaged
In case of loss of hydraulic pressure the parking brake
will engage automatically.

11
ALPHA
Air conditioning temperature control
This switches on the air conditioning and adjusts the
temperature in the cab. The air conditioning does only
work when fan switch is switched on as well. See para-
graph “Air conditioning”
Cab heater / defroster
Controls the in-cab temperature.
Cab air flow louvres
Adjustable in all directions.
Spraying pump switch
Engages and disengages the diaphragm spraying
pump. A second switch is located on the left hand side
of the sprayer under the platform.
Hydrostatic transmission control lever
To start the engine, the lever must be in neutral posi-
tion. Move the lever forward to drive forward and move
backwards to reverse.
Front wheel motors fast / slow switch
Controls the front wheel motors speed and torque
mode. See section “Driving”.
Rear wheel motors fast / slow switch
Controls the rear wheel motors speed and torque mode.
Se section “Driving”.
Control lamp, realignment of front wheels
(4-wheel steering only)
When the front wheels are aligned with the chassis this
lamp lights.
Control lamp, realignment of rear wheels
(4-wheel steering only)
When the rear wheels are aligned with the chassis this
lamp lights.
Control lamp, 4-wheel steering, (if fitted)
When the 4-wheel steering is set in automatic mode this
lamp lights.
Pedal, 4-wheel steering (if fitted)
When this pedal is depressed the 4-wheel steering is
active and front and rear wheels will steer when the
steering wheel is turned.
Switch for Electronic Anti-Spin System,
SAPE (if fitted)
Indicates that SAPE is engaged.
Use of cab heating
The cab is heated by means of the engine coolant. The
warm air is distributed via the adjustable air flow louvres
placed in the floor of the cab and will ensure effective
heating of the cab and defrosting of the windscreen.
• Adjust the air volume by turning the 3-speed fan
control
• Open and adjust the air flow louvres
• Adjust the temperature on the heater temperature
control
Use of air conditioning (if fitted)
The air conditioning evaporator unit is placed in the
compartment under the seat and conditioned air is let
into the cab via the air flow louvres.
Use of the air conditioning:
• Set the heater temperature control to minimum
• Adjust the air conditioning temperature control to the
desired temperature
• Adjust the air volume by turning the fan speed control
• Adjust the air flow louvres to obtain comfortable air
circulation in the cab
• Do not cool the cab air too much below outside tem-
perature. A huge temperature difference will affect
your physical well-being.
IMPORTANT! Always keep the cab door closed when
the air conditioning is switched on.
To demoist the windows rapidly, the air conditioning and
heater can be operated simultaneously to lower cab air
humidity.
IMPORTANT! To keep the air conditioning properly
working, it must be operated at least once a month for
minimum 10 min. Circulation of the refrigerant will lubri-
cate all seals and prevent escape of the refrigerant.
Consult with your HARDI dealer if the problem contin-
ues, and have the system inspected by a specialist in
air conditioning systems. AC refrigerant is not environ-
mental friendly. Have leakages mended instantly.
Windscreen wiper/washer
Depress the 2-speed wiper switch to operate the wiper
To wash the windscreen, press the button using screen
wash from the reservoir

12
ALPHA
Pilot lever
The pilot lever controls driving forward and reverse:
• Driving forward by
moving the lever for-
ward
• Reversing by moving
the lever backwards
• Neutral position is
midway in the notch
Following functions can
be operated via
switches on the pilot
handle:
1. Raising of the boom
2. Lowering of the boom
3. LEFT hand side boom tilt UP
4. LEFT hand side boom tilt DOWN
5. RIGHT hand side boom tilt UP
6. RIGHT hand side boom tilt DOWN
7. EC operating unit ON / OFF
8. Slanting of the boom
Fuel tank
The filling cap on the
fuel tank is located on
the machine right
hand side. Always
clean the area around
the fuel cap before
unscrewing it for refill-
ing.
It is recommended
always to refuel the
machine at the end of
the day to avoid con-
densation of water in
the fuel tank over-
night.
Straw dividers (optional extra)
The machine can be
fitted with straw divid-
ers on all four wheels
in order to reduce
crop damage during
spraying.
The straw dividers
can be fitted on the
following tyre sizes:
• 11.2 R 32"
• 14.9 R 24"
• 16.9 R 24"
The front number
plate, if required, is
fitted on the engine
bonnet under the
screen. Do not fit in
the screen as it will
reduce the cooling
air flow.
Driving
Before starting the engine
Before starting the engine, always ensure that:
• All oil and fluid levels are correct
• Nobody is carrying out service or repair jobs on the
machine
• All protection guards are properly fitted
• Parking brake is activated
• Pilot lever is in neutral position
• Main on/off valve at operating unit is switched off.
Actual track width in mm (+/-10 mm):
Base track width (Mounting face distance)
Tyre size 1500 (1801) 1800 (1977) 2000 (2177) 2250 (2427)
11.2 R 32" 1500 1800 2000 2250
14.9 R 24" 1500 1800 2000 2250
16.9 R 24" 1700 2000 2200 2450
540/65 R 24" 1700 2000 2200 2450
Actual track width at base track width with different tyre sizes
1 3 5
2 4 6
8
7
Optional tyre mountings
The machine should normally only be fitted with the op-
tional rims and tyres supplied as original equipment or
rims with similar specifications and load capacities.
The maximum rim off-set is -80 to +150 mm.
WARNING! Failure to keep this maximum off-
set may result in broken wheel motor shafts
and can lead to serious accidents and personal
injury!
Track width
The track width is factory set at 1800, 2000 or 2250 mm
measured by standard wheel mountings. Change of
wheel sizes will alter the actual track width.
Alteration of the track width requires the front and rear
axles to be replaced.
Number plate(s)
If the machine is required to be fitted with a number
plate, this must be placed correctly under the lamp.
Number plate size distance “X”
340 x 240 mm 45-65 mm
520 x 120 mm 65-100 mm
Rear number plate
T060-0006
T060-0030
T262-0004
T174-0002

13
ALPHA
Starting the engine
1. Switch on the battery isolator switch.
2. Ensure pilot lever is in neutral and parking brake is
activated. A safety start switch will disable the starter
motor when the pilot lever is not in neutral.
3. Set throttle at 1/4of full speed.
4. Switch on key to pos. 1and check warning lamps.
5. Check that the spraying pump and on/off valve at
EC-operating unit is switched off.
6. When the preheating control lamp is off, turn the key
to start position.
7. Set throttle to 1000 r.p.m. and let the engine warm up
for 3 min. to ensure good lubrication before driving.
To stop the engine
1. Set the pilot lever in neutral position and apply park-
ing brake.
2. Let the engine run idle (800-1000 r.p.m.) for 5 min. to
cool turbo and engine before stopping.
3. Stop engine by turning key to position 0.
4. Switch off the battery isolator switch.
WARNING! When parking, always ensure that
the sprayer is out of reach of children or others,
who can get contaminated and injured by
chemical residues left at, or in the sprayer!
Propulsion
The sprayer is equipped with hydrostatic transmission
with full time 4-wheel-drive.
The speed can be varied stepless forward and reverse
with the pilot lever.
The transmission has two different speed ranges which
can be set independently on the front and the rear axle:
1. Low speed / high torque range. 0 - 12.5 km/h
2. High speed / low torque. 0 to 25 km/h.
3. Different setting on front and rear axles. 0-18 km/h.
Range 1 is used for spraying in the field and when
working speed and full traction power is required.
Range 2 is used for road transport when the full speed
and less traction power is required.
Range 3 is used when driving uphill in slippery condi-
tions where change in weight distribution will cause
spinning front wheels.
IMPORTANT! Range 3 should not be used for continu-
ous driving. When conditions are back to normal, switch
to range 1 again. NEVER change range when machine
is moving.
To select speed range:
• Stop driving by moving the pilot lever to neutral
• Set the speed selector switches forward for slow
speed range
• Set the switches backwards for fast speed range
1: Switch front wheels
2: Switch rear wheels
Slow range: 0 - 12.5 km/h
Fast range: 0 - 25 km/h
Medium range: 0 - 18 km/h
To avoid wheels spinning:
• Set the speed selector on “High” speed (Hare)
on the axle with spinning wheels
• Set the speed selector on “Low” speed (Tortoise)
on the axle with non-spinning wheels
• As soon as the conditions are back to normal, set
both selectors to “low” again
IMPORTANT! The engine r.p.m. must always be mini-
mum 1800-2000 r.p.m. to ensure full traction and brak-
ing power of the transmission. Driving with too low en-
gine r.p.m. can cause braking failure and transmission
damage!
Braking
The ALPHA has no actual serv-
ice brake system. The hydrostatic
transmission works as propulsion
and service brake system in one.
To stop the machine, the pilot le-
ver is moved towards neutral “0”.
The parking brake is placed on
the side of the lateral switch
board/console.
The brake is engaged when the
handle is pushed upwards.
IMPORTANT! Never activate the parking brake when
the self-propelled sprayer is moving!
Electronic anti-spin, SAPE (if fitted)
The SAPE will prevent wheel spinning under difficult
field conditions - especially uphills with uneven axle
loads.
A wheel speed sensor on each wheel will report if the
speed on one wheel will increase more than 15%, and
the oil supply to this wheel will be reduced by an elec-
tronic controlled hydraulic valve.
1. Sensor
2. Black box
3. Hydraulic valves
1
0
T060-0007
T060-0032
2
1
T055-0006

14
ALPHA
Steering
The steering on the ALPHA can be set in two different
modes:
Front wheel steering - to be used on the road and dur-
ing spraying
Four wheel steering - to be used during turning at the
end of the tram lines
WARNING! Do not use 4-wheel-steering on
public roads, and fast driving. Always
disengage the 4-wheel steering before entering
public roads.
In case of failure in the hydrostatic steering circuit the
steering orbitrol permits an operation of the steering in a
closed circuit.
Front Wheel Steering
In this mode, only the front wheels can turn, the rear
wheels stay in straight position.
To select Front Wheel Steering mode:
• Set the switch on ‘AUTO’
• Turn the steering wheel so that the rear wheels are
placed in right position; the signal AR is activated.
Four Wheel Steering
In this mode, the front and rear wheels are steering op-
posite each other simultaneously.
Spraying
Before taking the sprayer into operation
Although the sprayer has been applied with a strong
and protective surface treatment on steel parts, bolts
etc. in the factories it is recommended to apply a film of
anti-corrosion oil (e.g. CASTROL RUSTILLO or SHELL
ENSIS FLUID) on all metal parts in order to avoid
chemicals and fertilizers to discolourate the enamel.
Avoid to apply oil on windows, lamps, markings and rub-
ber parts.
Spraying circuit operating diagram
To engage 4-wheel-steering mode:
• Set switch to “AUTO”
• Turn the steering wheel until both alignment lamps,
AV and AR, lights
• Step on the 4-wheel-steering pedal on the floor
• Keep the pedal depressed as long as 4-wheel-steer-
ing is required
To disengage 4-wheel-steering mode:
• Step off the 4-wheel-steering pedal
• Turn the steering wheel until the lamp AR lights
The steering is now back to 2-wheel-steering.
NOTE! If the AUTO/MAN switch is set in MAN mode,
the wheel alignment must be done manually. The di-
odes indicate the wheels are aligned. In MAN mode an
adapted crab steering can be done by using the steer-
ing wheel and pedal.
1. Suction filter
2. Suction manifold
3. Rinsing tank
4. Pump
5. Pressure manifold
6. Return valve
7. Return agitation
8. Operating unit on/off
9. HARDI MATIC pressure adjustment
10. Check valve
11. Self-cleaning filter
12. Distribution valves
13. Safety valve (operating pressure is 12 bar)
14. Return hose, constant pressure device
15. HARDI FILLER chemical filling device
16. Pressure agitation
17. Tank rinsing nozzle
18. Spray boom
T060-0009
T051-0001

15
ALPHA
Self-cleaning filter
Operating Diagram
1. From pump
2. Double filter screen
3. Guide cone
4. To operating unit
5. Replaceable restrictor
6. Return to tank
7. Nut
Choice of restrictor
It is important to have a large
flow through the filter. This is
achieved by choosing the
restrictor size in relation to
the liquid consumption of the
spray boom.
4 restrictors are supplied. Use
the green one
(largest orifice first).
The hose Nis demounted at
the self-cleaning filter, the
restrictor is put in the hose
and the hose is mounted
again.
If the required working pressure cannot be obtained, the
restrictor is too large. Choose a smaller restrictor.
Start with a black one, then a white and finally a red one.
When cleaning the filter remove hose Nand the hose at
the safety valve, and check there are no residues.
Standard filter size is 80 mesh. Sizes of 50 and 100
mesh are available and can be changed by opening the
filter top and replace the strainer. Check the O-rings be-
fore reassembling the filter and replace if damaged.
Use of MANIFOLD valve system
The following pictograms and colours are used for the
visualizing the function of the MANIFOLD valves:
Green disc = Pressure valve
Black disc = Suction valve
Blue disc = Return valve
To operate the spraying functions:
• Turn the handle on a green pressure valve towards
the function desired
• Turn the handle on a black suction valve towards the
desired function
• Turn the handle on the blue return valve towards the
desired direction of return flow
• Close all remaining valves by setting the handle(s)
on “O”
IMPORTANT! The valves and functions may vary from
machine to machine depending on optional equipment
fitted. Only the functions to be used must be open - Al-
ways close remaining valves.
Black disc = Suction valve
From main tank
(suction filter)
From Rinsing
Tank
Green disc = Pressure valve
To Self-Cleaning
Filter/operating
unit
To Fast Filling
Device
To HARDI
FILLER
To Tank Flushing
Nozzle
To main tank
From Filling Device
Agitation
(spraying position) Pumpsuction line
(to facilitate emp-
tying the tank
completely)
Blue disc = Return valve
N
T140-0014
T059-0001
T020-0002

17
ALPHA
3. The tank is now filled with water. Keep an eye on liq-
uid level indicator.
4. Turn handle on Suction Manifold away from Filling
Device to discontinue filling process. Then disengage
pump.
5. Disconnect suction tube B
and replace cover.
NOTE! Observe local legislation regarding use of Filling
Device. In some areas it is prohibited to fill from open
water reservoirs (lakes, rivers etc.). It is recommended
only to fill from closed reservoirs (mobile water tanks
etc.) to avoid contamination.
WARNING! If suction hose/filter is carried on
the sprayer during spraying, it can be contami-
nated by spray drift which will be transferred to
lake/river when filling!
Fast Filling Device.
The Fast Filling Device is operated as follows:
1. Ensure spray liquid tank
contains at least 50 litres
of water.
2. Remove cover (A) and
connect suction hose (B).
WARNING: Do not leave the sprayer whilst re-
filling the tank, and keep an eye on the level
gauge in order NOT to overfill the tank!
NOTE! Observe local legislation regarding use of Filling
Device. In some areas it is prohibited to fill from open
water reservoirs (lakes, rivers etc.). It is recommended
only to fill from closed reservoirs (mobile water tanks
etc.) to avoid contamination.
WARNING! If suction hose/filter is carried on
the sprayer during spraying, it can be contami-
nated by spray drift, which will be transferred to
lake/river when filling!
A
B
C
1. Remove cover A, and connect suction hose Bto Suc-
tion Manifold.
2. Engage diaphragm pump and set engine revolutions
at 2200 r/min. Turn handle on Suction Manifold to-
wards Filling Device.
3. Turn handle on Pressure Manifold towards Fast
Filler. With the engine at 2200 r/min, the pressure
gauge should indicate about 10 bar.
4. If water is not seen in transfer tube, prime by turning
valve (C).
5. Keep eye on liquid level indicator.
6. Turn handle on Pressure Manifold away from Fast
Filler to discontinue filling process.
NOTE: Turn handle towards EC-operating unit before
turning away from Fast Filler in order to avoid peak
pressure blowing the safety valve!
7. Disconnect suction tube (B) and replace cover.
The Filling Device and the Fast Filling Device can be
used simultaneously - this gives even bigger filling ca-
pacity.
T020-0005
T020-0004
T020-0003

18
ALPHA
NOTE! On models with HARDI PILOT the EC operating
unit is controlled via the HARDI PILOT - See separate
instruction book.
1. Choose the right nozzle size by turning the nozzle
bodies to a suitable nozzle for the spray purpose.
Make sure that all nozzles are the same type and size.
2. Open or close pressure agitation. (Remember pres-
sure agitation takes 5% to 10% of pump output).
3. Open main on/off valve 2by pushing switch towards
green - spraying position A.
4. Open all distribution valves 4by pushing switches V
to position Green. A green indicator appears under
the EC-motor when valve is in spray position.
5. Open pressure adjustment valve by activating switch
Cuntil green finger screw 3stops rotating.
6. Put the machine in neutral and set the engine revolu-
tions and thereby the number of revolutions of the
pump corresponding to the intended travelling speed.
Adjust the pressure adjustment valve 3so that the
pressure gauge indicates the recommended pressure.
ADJUST THE PRESSURE EQUALIZATION SECTIONS
AS FOLLOWS:
8. Note the pressure and place the first of the distribution
valves 4to position “off” (opposite “Green” position).
9. Turn the corresponding adjusting screw 1until the
pressure gauge again shows the same pressure (turn
the screw clockwise for higher pressure, anticlock-
wise for lower pressure).
10.Place the next distribution valve to position “off”, and
adjust this one in the same way - one by one.
NOTE! HEREAFTER ADJUSTMENT OF PRESSURE
EQUALIZATION WILL ONLY BE NEEDED IF YOU
CHANGE TO NOZZLES WITH OTHER CAPACITIES.
OPERATING THE CONTROL UNIT WHILE DRIVING:
11.To close the entire boom, operate switch A. This
takes the pressure from the pump. The liquid will then
return to the tank via the return system and serve as
agitation. The diaphragm anti-drip valves ensure in-
stantaneous closing of all nozzles. In order to close
part of the boom, activate one of the distribution
valves by the switch Vof the section or sections to be
closed. The pressure equalisation device ensures
that the pressure does not rise in the sections which
remain open.
Remote pressure gauge (if fitted)
The remote pressure gauge measures the working
pressure in the boom tubes as close to the nozzles as
possible. This pressure reading will always be slightly
lower than the reading at the operating unit pressure
gauge.
The outputs stated in the nozzle charts are always
based on the pressure measured at the nozzle.
Always adjust pressure when calibrating and spraying
according to readings at the remote pressure gauge.
Filling of chemicals.
Chemicals can be filled in the tank in 2 ways:
1. Through tank lid.
2. By means of HARDI FILLER chemical filling device.
Filling through tank lid
The chemicals are filled through the tank lid - Note in-
structions on the chemical container!
WARNING! Be careful not to slip or splash
chemicals when carrying chemicals up to the
tank lid!
1. Make sure the EC on/off valve is switched off.
2. Set the MANIFOLD valves to correct position. Black
valve “Suction from main tank”, green valve towards
“Agitation” and Blue valve towards “Agitation”.
Adjustment of operating unit
T020-0007
3. Engage the pump and set engine revs. to 2200 r.p.m.
4. Add the chemicals through the main tank hole.
5. When the spray liquid is well mixed, turn handle on
the Pressure Manifold towards “Spraying” position.

19
ALPHA
4. Engage the pump and set engine speed at 2200 r.p.m.
5. Open FILLER lid.
6. Measure the correct quantity of chemical and fill it
into the hopper.
NOTE! The scale in the hopper can only be used if the
sprayer is parked at level ground! It is recommended to
use a measuring jug for best accuracy.
7. Open the bottom valve Aand the chemical is trans-
ferred to the main tank.
8. If the chemical container is empty it can be rinsed by
the container rinsing device (if fitted). Place the con-
tainer over the multi-hole nozzle and press the lever B.
Filling by HARDI FILLER chemical inductor
Liquid chemicals:
1. Fill the main tank
at least 1/3with
water (unless
something else is
stated on the
chemical container
label). See section
“Filling of water”.
2. Turn the handle at
the Suction Mani-
fold towards “Main
tank” and turn blue
return valve to-
wards “Agitation”. Close remaining valves.
3. Turn the handle at the Pressure Manifold towards
“HARDI FILLER”. Close remaining valves. Check that
bottom valve Aat the FILLER is closed.
WARNING! Do not press lever Bunless the
multi-hole nozzle is covered by a container to
avoid spray liquid hitting the operator.
IMPORTANT! Rinsing device uses spray liquid to rinse
containers for concentrated chemicals. Always rinse the
chemical containers with clean water several times until
they are clean before disposal.
9. Engage the hopper rinsing device by opening valve C.
10.Close valve Cagain when the hopper is rinsed.
IMPORTANT! The hopper rinsing device is using spray
liquid for rinsing the hopper for concentrated chemical!
The FILLER must always be cleaned together with the
rest of the sprayer when the spray job is done.
10.Close valve Aand the FILLER lid again.
11.Turn handle at the Pressure Manifold towards “Inten-
sive Agitation” and close remaining valves.
12.When the spray liquid is well mixed, turn handle on
the Pressure Manifold towards “Spraying” position.
Keep P.T.O. engaged so the spray liquid is continu-
ously agitated until it has been sprayed on the crop.
Powder chemicals
Filling of powder chemicals is done as follows:
1. Fill the main tank at least 1/2with water (unless some-
thing else is stated on the chemical container label).
See section “Filling of water”.
2. Turn the handle at the Suction Manifold towards
“Main tank” and turn blue return valve towards “Agita-
tion”. Close remaining valves.
Keep P.T.O. engaged so the spray liquid is continu-
ously agitated until it has been sprayed on the crop.
T020-0012
T020-0006
T042-0001
T020-0007
T020-0012

20
ALPHA
Operating the boom (all models)
Safety first! Before operating the boom, be sure that no
objects are found near the sprayer (poles, persons,
etc.).
DANGER!
When fold-
ing and un-
folding the boom,
be sure that no per-
sons or objects are
in the operating
area of the boom
and that the boom
cannot touch any electrical conductors!
4. Engage the pump and increase engine speed to
2200 r.p.m.
5. Open the bottom valve Aat the FILLER. Open
FILLER lid.
6. Engage the hopper rinsing device by opening valve C.
7. Measure the correct quantity of chemical and sprinkle
it into the hopper as fast as the rinsing device can
flush it down.
8. If the chemical container is empty it can be rinsed by
the container rinsing device (if fitted). Fit the bag
bracket and place the powder bag over the multi-hole
nozzle and press the lever B.
WARNING! Do not press lever Bunless the
multi-hole nozzle is covered by a container to
avoid spray liquid hitting the operator.
IMPORTANT! Rinsing device uses spray liquid to rinse
containers for concentrated chemicals. Always rinse the
chemical containers with clean water several times until
they are clean before disposal.
9. Close valve Cagain when the hopper is rinsed.
IMPORTANT! The hopper rinsing device is using spray
liquid to rinse the hopper for concentrated chemical.
The FILLER must always be cleaned together with the
rest of the sprayer when the spray job is done.
3. Turn the handle
at the Pressure
Manifold to-
wards “HARDI
FILLER”. Close
remaining
valves. 12.When the spray liquid is well mixed, turn handle on
the Pressure Manifold towards “Spraying” position.
Keep P.T.O. engaged so the spray liquid is continu-
ously agitated until it has been sprayed on the crop.
10.Close valve Aand the FILLER lid again.
11.Turn handle at the Pressure Manifold towards “Inten-
sive Agitation” and close remaining valves to mix the
spray liquid.
T042-0002
T020-0006
T020-0012