Hardi LX-MB Series User manual

HARDI INTERNATIONAL A/S reserve the right to make changes in design or to add new features without any
obligation in relation to implements purchased before or after such changes.
1
LX - MB/HB
Instruction book
673514-GB-92/03
Contents
Description .................................................................2
Operation diagram .....................................................4
Connecting the sprayer ..............................................5
Operating instructions ................................................7
Operation of the MB boom....................................7
Operation of the HB boom ....................................8
Operation of trapeze ............................................. 9
Adjustment of the operating unit .........................10
Drain valve operation ..........................................11
Maintenance.............................................................12
Lubrication ..........................................................12
Re-adjustment of the boom.................................18
Changing of valves and diaphragms...................20
Changing of ball seat in operating unit................ 22
Off-season storage .............................................23
Operational problems............................................... 24
Technical specifications ...........................................27
Pictorial symbols ......................................................29
Spare parts...............................................................30

2
We congratulate you for choosing a HARDI plant protection pro-
duct. 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 LX models, please pay attention to
the paragraphs dealing with precisely your model. This book is to be
read in conjunction with the Spray Technique book.
Description
The Hardi LX models consist of a pump, frame with tank of 600, 800,
1000 or 1200 litre capacity, BK operating unit, 10, 12, 15, 16 or 18
metre trapeze suspended booms and transmission shaft.
The design of the diaphragm pump is simple, with easily accessible
diaphragms and valves that ensures liquid does not come in contact
with the vital parts of the pump.
The tank, made of impact-proof and chemical resistant polyethylene,
has a purposeful design with no sharp edges for easy cleaning and
efficient agitation. A suction filter is located at the top of the tank. This
facilitates filter inspection even if the tank is filled with spray liquid. To
ensure safe operation, the drain valve is also located at the top of the
tank.
The BK 180 K operating unit consists of; pressure agitator, safety
valve, on/off function, pressure filter with pressure gauge, distribution
valves with pressure equalization device and HARDI-MATIC.
HARDI-MATIC ensures a constant volume per hectare of the liquid at
varying speed in the same gear. The number of revolutions on the
P.T.O. must be kept between 300-600 r/min.

3
LX-MB
LX-HB
The MB spray boom (10 or 12 metre) or the HB spray boom (12, 15,
16 or 18 metre) is fitted. The boom is supported by a trapeze which
protects the boom against vibrations and shocks when driving on
uneven ground. This ensures longer boom life and improves boom
stability for an optimal spray pattern. Height adjustment of the boom is
hydraulic. The boom is fitted with spring loaded breakaways at the
pivots.
Identification plate
An identification plate fitted on the frame indicates model, year of
production and serial number, and country of origin.

4
Operation diagram
1. Suction filter
2. Pump
3. Pressure agitator valve
4. Safety valve
5. On/off valve
6. Pressure filter with pressure
gauge
7. Distribution valve with pressure
equalization
MB boom - 3 sections
HB boom - 4 sections
8. HARDI-MATIC
9. Sprayer boom

5
Connecting the sprayer
The sprayer is designed for three point
suspension and is equipped with 28
mm pivots (category II). On 600 litre
model, 22 mm (category I) pivots are
fitted.
On models 800, 1000 and 1200 l the
pivot position can be altered 120 mm.
For HB boom - For increased stability
when the sprayer is detached, retract-
able supports are located under the
frame. Extend before detaching.
Retract after attached.
WARNING: Note the weight of the sprayer.
See section on Technical specifications.
Generally it is recommended to:
1. Add ballast to front of tractor.
2. Increase tyre pressure (see tractor
instruction book).
3. Travel at slower speeds when driving with
a full tank.
(The tractor will have decreased braking
efficiency.)
4. Be careful when filling/lifting the sprayer the first time.
When connecting the sprayer to the tractor the length of the transmis-
sion shaft should be checked and if necessary shortened. There
should be at least 10 mm free play between the male and female parts
when the shaft is horizontal.
120mm
HB

6
It is important for the personal
safety of the operator that the
transmission shaft is intact.
The protection guards must
cover the whole shaft. This
includes the universal cross
covers at each end of the
shaft. The chains are con-
nected so that the protection
guards do not rotate with the
shaft.
To ensure long life of the
transmission shaft, try to avoid
working angles greater than 15°.
Hydraulics
Hydraulic connection necessitates one single acting outlet. The system
will require a capacity of approx. 2 litres and a minimum pressure of
100 bar.
WARNING
INITIAL RAISING AND LOWERING SHOULD BE DONE CAU-
TIOUSLY; THERE MAY BE A LITTLE AIR IN THE SYSTEM
AND THIS MAY CAUSE ERRATIC MOVEMENTS. THERE-
FORE TAKE CARE THAT NO PERSONS OR OBJECTS ARE
HURT OR DAMAGED IN THE PROCESS OF TESTING.
Rear lights (if fitted)
Connect plug for rear lights to the tractors 7-poled socket and check
that rear lights, stop lights and turning indicators work properly before
driving anywhere.
Roadworthyness
When driving on public roads and other areas where the highway code
applies, or areas where there are special rules and regulations for
marking and lights on implements, you should observe these and
equip implements accordingly.

7
Operating instructions
Operation of the MB boom
Remove boom transport lock pins
A. When unfolding (or folding) the
initial force to release the spring
loaded breakaways will be higher
than the actual unfolding/folding.
CAUTION: The breakaways must
be correctly tensioned and lubri-
cated. (see section on Re-adjust-
ment of the boom).
When unfolding outer sections,
ensure the outer boom locks click
into place.
Reverse procedure to fold.
A
MB

8
Operation of the HB boom
➀Remove the transport safety wire (*) and unfold the intermediate
part. Fold arm down to tighten wire.
➁Lift spring-loaded lock.
➂Turn the lock 90°.
√Lock the intermediate and central parts.
➄Unfold outer section. Fold arm down to
tighten wire.
≈For 16 and 18 metre unfold
breakaway ensuring the locks
click into place.
CAUTION: The breakaways must be correctly tensioned and lubri-
cated. (see section on Re-adjustment of the boom)
To fold the order is A- B- C- D- E- F. Remember to reattach safety
wire at transport bracket around boom.
*
HB

9
Operation of trapeze
The trapeze suspension must be correctly adjusted and regularly
lubricated, if it is going to operate satisfactorily.
The primary function of the suspension is to protect the boom against
vibrations and shocks. It also helps maintain it a uniform height above
the target.
For MB boom - Under normal
field operation, remove trapeze
lock pin C. Replace pin to block
function, for example before
folding the boom or when
spraying on sloping terrain.
For HB boom - Under normal conditions the trapeze is always active.
When spraying on flat fields, use pos. 2. On sloping terrain the boom
can be slanted (pos. 1 or 3) and still maintain an active trapeze.
MB
Pulsation damper (if fitted)
The air pressure in the pulsation damper is preset
at the factory to 2 bar. This covers spray working
pressures between 3 and 15 bar. When using
spray pressures outside this range, the air pressure
should be adjusted as shown in the diagram. The
diagram is also embossed on the damper.
HB
C

10
Adjustment of the operating unit
1. Open or close lever 4depending on whether pressure agitation is
required. (Remember pressure agitation takes 5% to 10% of pump
output).
2. Turn main on/off handle 2to spraying position A.
3. Set all hand levers 3on the distribution valve to spraying position A.
4. Turnthe HARDI-MATIC valve 6anti-clockwise to its extreme position.
5. Turn the safety valve 1clockwise to maximum pressure.
6. Put the tractor in neutral and set the engine revolutions and thereby
the number of revolutions of the pump corresponding to the intended
travelling speed. Remember the number of revolutions on the P.T.O.
must be kept between 300-600 r/min.

11
Adjust the HARDI-MATIC valve 6so that the pressure gauge indicates
the recommended pressure.
ADJUST THE PRESSURE EQUALIZATION SECTIONS AS FOL-
LOWS:
7. Note the pressure and place the first lever 3on the distribution valve
in position B(off position).
8. Turn the corresponding adjust screw 5until the pressure gauge
again shows the same pressure (turn the screw clockwise for higher
pressure, anti-clockwise for lower pressure).
9. Adjust the other sections of the distribution valve in the same way.
NB: HEREAFTER ADJUSTMENT OF PRESSURE EQUALIZATION
WILL ONLY BE NEEDED IF YOU CHANGE TO NOZZLES WITH
OTHER CAPACITIES.
10. Operating the control unit while driving:
To close the entire boom, turn the handle 2to position B. This takes
the pressure off the pump. The liquid will then return to the tank via the
return system. The diaphragm anti-drip valves ensure instantaneous
closing of all nozzles. In order to close part of the boom, move lever 3
of the distribution valve to position B(off position) for the section or
sections to be closed. The pressure equalization device ensures that
the pressure does not rise in the sections which are to remain open.
Drain valve operation
Pressure filter
The operating unit has an in-built pressure filter. It is not necessary to
dismantle the filter to clean it. When cleaning the sprayer (clean water
circulating in the tank), open the drain valve to flush the filter;
To open : A
To close : B
Tank drain
To open : A
To close : B

12
Maintenance
In order to derive full benefit from the sprayer for many years the
following few but important rules should be kept:
Cleaning the sprayer - see Spray Technique book.
Filters
Clean filters ensure :
•Sprayer components such
as valves, diaphragms
and operating unit are not
hindered or damaged
during operation.
•Nozzle blockages do not
occur whilst spraying.
•Long life of pump. A
blocked suction filter will
result in pump cavitation.
The main filter protecting
sprayer components is the
suction filter at the top of the
tank. Check it regularly.
Ensure the O-ring on filter housing is in good condition and lubricated.
The operating unit has an in-built pressure filter. See section on Drain
valve operation.
Lubrication
Recommended lubrication is shown in following tables. Use ball
bearing grease (lithium grease No.2)
NOTE: If the sprayers are cleaned with a high pressure cleaner or it
has been used to spray fertilizer, we recommend lubrication of the
entire machine.

13
5Position on sprayer
Oil
Grease
Operation hours
Page to find more
information
Winter protection or
off-season storage
12
11 10
9
3
1-2
8

1X 40
1X 40
2
AX12
BX40
3X 20
14
20
6
10
11
22

15
4X40
5X40
6X40
7X 40
MB
MB
MB
MB
19
9
18
18

16
8X 40
9
AX40
BX 40
10
AX40
BX 40
A
A
A
A
B
B
B
B
B
HB
HB
19
9
19
HB
A
A
A
B
B

17
11 X 40
12
AX 40
BX40
HB
HB
19
18
B
A
A

18
Re-adjustment of the boom
After having used the sprayer for some days the boom should be
adjusted as follows:
When adjusting the sprayer must be on level ground with unfolded
boom. For MB booms - Remove the lock pin for trapeze.
C
Boom breakaway
The function of the breaka-
way is to prevent or reduce
boom damage if it should
strike an object or the ground.
If it is overtight, it will not
function. If it is too loose, it
will yawn (forward and back
movement) under spraying.
Lubricate coupling before
adjusting spring tension.
Slacken screw nut Ato
decrease breakaway resist-
ance. Do not overtighten;
better to loose than overtight.
Again minor adjustments in
the field may be necessary.
For MB boom - Ensure also
channel bolts Bare tight.
Outer section
The hinge should be firm. If
overtight it is difficult to fold.
To adjust, tighten or loosen
nuts C.
A
C
HB
MB
MB
HB
MB
MB

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Boom lift.
The boom lift should be ad-
justed so the boom can freely
move up and down when the lift
cylinder is actuated. Do not
tighten so much that the lift
cannot work unhindered.
For MB boom - Adjust Dso the
space Eis about equal at all 4
points.
For HB boom - Loosen lock
nuts Fand adjust bolts G.
Retighten lock nuts.
Trapeze suspension
For the trapeze to function it
must not be overtight. If it is too
loose the boom will yawn. This
results in a poor spray distribu-
tion.
Adjustment is made after
having lubricated all pivot and
friction points (see section on
Lubrication).
Adjust trapeze bolts Hso it is
not to tight nor to loose. Minor
adjustment in the field may be
necessary.
Wire tension - HB boom only.
Slack wires result in excessive
boom yawn. To adjust, loosen
rigging screw lock nuts and
turn. If overtightened it will not
be possible to fold arm down.
MB
D
E
H
H
MB
MB
HB
MB
HB
G
G
F
F
HB
HB

20
Changing of valves and diaphragms
Valves
Dismantle valve compartment 1. Before changing the valves 2note the
orientation of the valves so that they may be replaced correctly.
Important: For model 361 one special valve with red flap 2A is to be
placed in the valve opening shown.
It is recommended to use new gaskets 3when changing or checking
the valves.
Diaphragms
Remove the diaphragm cover 4after having dismantled the valve
compartment as indicated above. The diaphragm 5may then be
changed. If fluids have reached the crankcase, re-grease the pump
thoroughly. Check also the drain hole at the bottom of the pump is not
blocked.
Model 1202