LEMKEN Primus 25 Guide

Operation and adjustment
Trailed field sprayers
Primus 25, 35, 45
- EN -
Safety is our concern!
Art.No. 175 4013
2/05.07
LEMKEN GmbH & Co. KG
Bodenbearbeitung und Aussaat
Werk Alpen
Weseler Straße 5, D-46519 Alpen /
Postfach 11 60, D-46515 Alpen
Tel. [phone], Fax [phone]
E-Mail: [email protected],
Internet: http://www.lemken.com
Pflanzenschutz
Werk Meppen
Kopenhagener Str. 1, D-49716 Meppen
Tel. [phone], Fax . [phone]
E-Mail: [email protected];
[email protected]
Internet: http://www.lemken.com

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Dear customer!
We would like to thank you for your confidence in buying this implement.
The advantages of this implement will be shown, only, when operated and used
with due care and attention.
When handing over this implement your dealer will have already instructed you
with regard to operation, adjustment and maintenance. But this short introduction
requires an additional detailed study of the instruction book.
Therefore read this instruction book carefully before the first use. Please pay
attention to the safety instructions mentioned in this instruction book.
Any changes and modifications carried out not being mentioned expressly in this
instruction book, may only be carried out with a written agreement of the
manufacturer.
Ordering spare-parts
When ordering spare-parts please state type and serial No. of the implement. This
information will be found on the identification plate. Put down this data on the
following table so that it is always available.
Type of implement:
Serial No.:
Only use genuine LEMKEN spare-parts. Spurious parts negatively influence the
function of the implement, show a shorter lifetime and increase in nearly all cases
the maintenance effort.
We trust that you will understand that LEMKEN is unable to guarantee poor
operation and damage caused by using spurious parts!

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DEFINDED USE
•Please familiarise yourself with the LEMKEN-implement and its
operations before putting the implement to work. Therefore use
this instruction book with the ’General Health- and Safety
precautions’!
•Your LEMKEN-field sprayer has been designed purely for the spraying of
insecticides, fungicides, herbicides in the form of suspensions, elmusions and
mixtures as well as of liquid fertilizers for the agricultural use.
•The relevant accident prevention advices as well as the plant protection rules
as well as the generally accepted safety technical, working, medical and road
traffic rules must be adverted too!
•The LEMKEN-implements have been designed purely for the agricultural use!
Any use beyond the one stipulated above is no longer considered as defined
use!
•Under „defined use“ the manufacturer’s prescribed operation-, maintenance-
and repair conditions are to be adhered to!
•The LEMKEN-implement may only be operated, maintained and repaired by
such persons who have been made acquainted with it and who have been
advised about the dangers!
•The applicable accident prevention advices as well as the generally accepted
safety technical, working, medical and road traffic rules should be adhered to!
•Own modifications at the implement exclude the manufacturers’ liability for
damages caused by the modifications.

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TABLE OF CONTENTS
INTENDED USE................................................................................................................ 2
Table of Contents ............................................................................................................ 4
1EFFECTS OF CERTAIN PESTICIDES ON THE FIELD SPRAYER.......................... 6
2Safety instructions.................................................................................................... 7
3Valves....................................................................................................................... 13
3.1 Valve overview............................................................................................................. 13
3.2 Valve description......................................................................................................... 14
3.2.1 Filling valves............................................................................................................. 14
3.2.2 Selection valve ......................................................................................................... 15
3.2.3 Valve for the internal cleaning .................................................................................. 16
3.2.4 Distribution valve...................................................................................................... 17
3.2.5 Induction valve ......................................................................................................... 18
3.2.6 Valve block of the chemical inductor ........................................................................ 19
3.2.7 Rinsing valve for cleaning the pressure filter............................................................ 20
3.2.8 Settings table ........................................................................................................... 21
4Operation ................................................................................................................. 22
4.1 Filling the main tank with water ................................................................................. 22
4.1.1 Filling via the dome cover......................................................................................... 22
4.1.2 Filling with suction hose (external suction) ............................................................... 23
4.1.3 Filling via the external filling connection ................................................................... 25
4.2 Filling pesticides in the main tank ............................................................................. 26
4.2.1 Filling via the dome cover......................................................................................... 26
4.2.2 Filling via the chemical inductor with internal cleaning afterwards ........................... 27
4.3 Separate internal cleaning of the chemical inductor ............................................... 30
4.4 Agitating.......................................................................................................................32

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4.5 Spraying ....................................................................................................................... 33
4.6 System cleaning when the main tank is empty ........................................................ 34
4.7 System cleaning when main tank is partially filled .................................................. 36
4.8 Emptying the machine ................................................................................................ 38
4.9 Volumetric measurement and calibration ................................................................. 39
4.9.1 General .................................................................................................................... 39
4.9.2 Checking the nozzle output ...................................................................................... 39
4.9.3 Vehicle speed determination .................................................................................... 41
5CLEANING ............................................................................................................... 42
5.1 Rough cleaning ........................................................................................................... 42
5.2 Outside cleaning ......................................................................................................... 43

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1 EFFECTS OF CERTAIN PESTICIDES ON THE FIELD SPRAYER
At the time of manufacture of the machine, the manufacturer is aware of some of
the authorised pesticides and mixtures which can have damaging effects on the
field sprayer materials. These are usually solvent-based pesticides and mixtures
such as BETANAL with TRAMAT, (BETANAL-TANDEM), ELANCOLAN, ILOXAN,
LASSO, MUDECAN, RACER, RIPCORD 40, TERIDOX, STOMP, liquid manure
(AHL) but also
Mixtures with AHL: ALANDAN, or liquid NEXID 100.
Damaging effects can also occur with the subsequent products of the above
materials and mixtures.
IMPORTANT! For mixtures not “covered” by any equipment application, it
is recommended to test the materials mentioned above with
several hours of submersion tests before starting work.
Pesticides or other substances which tend to harden or stick
must not be used with the machine.
ATTENTION! The usage instructions of the respective pesticide
manufacturer must be strictly followed before starting work.
The equipment parts which can be affected by the pesticides mentioned above
are usually hoses, spray lines, seals, tanks and pump diaphragms.
If hoses become particularly soft or seals or diaphragms swell, these are signs of
damaging effects. The affected parts must then be replaced immediately. These
damaging effects can often be avoided if the machine is intensively flushed
immediately after dispensing the materials and mixtures shown above (e.g. rinsing
and disposal of the technical residues on the field).

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2 SAFETY INSTRUCTIONS
General Safety Instructions
•Before using the machine, always check both it and the tractor for
roadworthiness and operational safety!
•As well as the notes in these instructions the operator is advised to comply with
the generally applicable safety at work regulations and those relating to use of
the public highway!
•When driving on public roads with a raised machine the lifting control lever
should be locked against unintentional lowering!
•The fitted warning and advisory plates give important information for safe
operation; adhering to these increases your own safety!
•When using public roads adhere to applicable traffic rules!
•The operator should familiarise him-/herself with all controls and their functions
before starting work. During work could be too late!
•The clothing of the operator should fit tight. Avoid wearing any loose clothing!
•To avoid danger of fire keep the implement clean!
•Before beginning to drive check surroundings area (children)!
•Sitting or standing on the implement during operation or during transport is not
permissible.
•Attach implements as advised and only to the stipulated positions!
•Special care should be taken when the implement is coupled to or uncoupled
from the tractor.
•When coupling or uncoupling the implement bring the supporting stands into
the corresponding position (standing safety)!
•Fit weights only to the fixing points provided for those purposes!
•Adhere to the maximum permissible axle loads, total weights and transport
width!
•Fit and check transport gear, road lights and warning guards!
•The release ropes for quick coupler latches should hang freely and in the

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lowered position must not release the quick coupling by themselves.
•Never leave the driver's seat whilst in motion!
•Handling behaviour, steerability and braking are influenced by mounted
implements, trailers and ballast weights. Check for sufficient steerability and
braking!
•When driving round bends note the width of the machine and/or changing
centre of gravity of the implement.
•Put implement into operation only when all guards are fixed in position!
•Never stay or allow anyone to stay within the operating area!
•Never stay in the turning and slew area of the implement!
•Do not operate any hydraulic controls while anybody is in the operating area!
•On all pivoting parts actuated by power assistance (e.g. hydraulics) exists
danger of injury by bruising and crushing!
•Before leaving the tractor lower the machine to the ground. Apply the parking
brake, stop the engine and remove the ignition key!
•Do not allow anybody between the tractor and implement if the parking brakes
are not applied!
•Swing attachment arm to transport position and secure!
Trailed implements
•Secure machine and tractor against unintended rolling away!
•Never exceed the maximum permissible load of the drawbar or hitch!
•When fitting the implement to a drawbar or hitch, ensure sufficient movement
at the hitch-point!

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Brakes
•Check the function of the brakes before starting work!
•The brake systems must be checked thoroughly at regular intervals!
•Adjustment and repairs to the brake system must only be carried out by
approved workshops or approved brake service shops. Only use the specified
brake fluid and renew as specified.
Hydraulic equipment
•The hydraulic equipment is under high pressure!
•When connecting hydraulic rams and motors, the hydraulic hoses must be
connected as directed!
•Always release hydraulic pressure from both tractor and machine before
connecting the hydraulic hoses.
•Coupling sleeves and connectors for hydraulic functional connections between
the tractor and machine should be marked in order to rule out operator errors. If
the connections are reversed, the opposite function is carried out (e.g.
raising/lowering) and there is a risk of accidents!
•Check the hydraulic hoses regularly and replace them in the event of damage
or signs of ageing! The replacement hoses must comply with the technical
specification as laid down by Lemken!
•When searching for leaks, appropriate equipment should be used because of
the danger of injury!
•Hydraulic oil escaping at high pressure can penetrate the skin and cause
serious injury! Consult a doctor immediately in the case of injury. Danger of
infection!
•Before working on any hydraulic equipment, lower all implements/attachments,
release hydraulic pressure where possible and switch off the tractor engine!

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Tyres
•When working on the tyres, make sure that the machine has been placed on
the ground safely and that it is secured by chocks against unintentional rolling
away!
•Fitting tyres requires knowledge and special tools!
•Repair work on the tyres and wheels must only be carried out by trained
personnel and with suitable tools!
•Check the air pressure regularly. Adhere to the advised air pressure!
Maintenance
•Repair-, maintenance- and cleaning operations as well as adjustments and
remedy of function faults should principally be conducted with engine stopped and
brakes applied. Remove ignition key!
•Check and tighten nuts and bolts regularly!
•When conducting maintenance work on a lifted implement always place
suitable supports underneath!
•For replacing any tools with cutting edges always use suitable tools and
gloves!
•Dispose of old oils, grease and filters as prescribed by law.
•Before working on the electric gear disconnect battery cables!
•When conducting electrical welding operations on the tractor or on the
mounted implement remove cable from the generator and the battery!
•Any spare parts fitted must meet with the implement manufacturer's fixed
technical standards! This is for example ensured by using genuine spare parts!
•To avoid danger of explosion only use nitrogen for filling up gas tanks!

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Power take-off shaft operation
•Only drive shafts stipulated by the manufacturer may be used!
•Both halves of the protective tube of the PTO shaft must be anchored to
prevent rotation - and be in working order!
•At PTO shafts always see to the advised tube overlapping in transport- and
working position!
•Fit and remove the PTO shaft only when the power take-off drive is
disconnected, the engine is switched off and the ignition key has been
removed!
•Always ensure the correct assembly and safety of the PTO shaft!
•Prevent PTO guard from spinning by fixing the provided chain to a nearby
static part!
•Before engaging the power take-off drive, ensure that the selected speed of the
tractor's power take-off shaft matches the permissible speed of the power
harrow!
•When using the speed-related PTO shaft take into account that the PTO speed
depends on the driving speed and that the turning direction is reversed when
driving backwards!
•Before engaging the power take-off drive, ensure that nobody is standing in the
hazard area of the power harrow!
•Never connect the power take-off shaft when the engine is switched on!
•When working with the power take-off shaft, nobody must stand in the area of
the rotating power take-off shaft.
•Always disengage the power take-off drive if excessive angular displacements
occur.
•Caution: After disengaging the power take-off drive, the rotors take a few
seconds to come to rest. Do not approach the power harrow too closely during
this time. Work must not be carried out upon it until it comes to a complete
standstill!
•Clean, lubricate or adjust the appliance driven by the power take-off shaft only

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when the power take-off shaft is disconnected, the engine is switched off and
the ignition key has been removed!
•Retain the uncoupled PTO shaft on the mount provided!
•After removing the PTO shaft replace the screw-on guard over the tractor PT0.
•In the event of damage, rectify it prior to continuation of work.
Plant protection
As well as the general safety and accident prevention regulations for tractors,
machine and work process which always apply, the recommendations and
instructions of the pesticide manufacturers must be observed.
- Wear protective clothing
- Pay attention to warnings
- Observe metering, application and cleaning regulations
Do not open pressurised lines
Only suitable hoses for the maximum permitted operating pressure which also
resist the chemical, mechanical and thermal load are permitted as replacement
hoses. As a matter of principle, only suitable hose clamps must be used during
installation. The regulations for marking and connecting hoses must be observed.
Repair work in the spray tank must only be done after thorough cleaning and
while wearing a respirator. For safety reasons, a second person outside the tank
must supervise the work.
The following must be observed for the repair of spray equipment which is used
for liquid fertilisation with urea ammonium nitrate solutions:
Residues of urea ammonium nitrate solutions can form salt on or in the equipment
due to evaporation: This produces pure ammonium nitrate and urea. In pure form,
ammonium nitrate in combination with organic substances e.g. urea is explosive if
the critical temperatures are reached during repair work (e.g. welding, grinding,
filing). The salt of the urea ammonium nitrate solution can be dissolved in water;
this means that this danger is resolved by thorough washing of the machine or
parts for repair with water. Therefore, always clean the machine thoroughly with
water before a repair.

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3 VALVES
3.1 Valve overview
The field sprayer is fitted with manually operated valves which cover all required
work functions depending on the switching position.
1. Filling valve(s)
2. Selection valve
3. Valve for the internal cleaning
4. Distribution valve
5. Induction valve
6. Rinsing valve
7. Valve block of the chemical inductor
8. Valve for the agitator nozzle
9. Valve for the boundary wetting
10. Valve for the canister rinsing
11. Valve for the outside cleaning
1
2
5
7
89 10 11
1
2
3
4
6

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3.2 Valve description
3.2.1 Filling valves
Using the filling valve (1) or the filling valves (2), liquid is drawn in externally via a
filling hose or internally from the selection valve.
(a) Suction from the selection valve; liquid is drawn internally from the suction
valve.
(b) External suction; liquid is suctioned externally for filling.
The valve settings are described as follows in plain text on the corresponding
instruction signs:
(a) SPRAYING
(b) SUCTION
b
a
b
a
2
1

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3.2.2 Selection valve
The selection valve (2) is used to select the tank from which the liquid should be
suctioned internally by the pump.
(a) Clean water tank; clean water is suctioned from the clean water tank.
(a) Main tank; spray liquid is suctioned from the main tank.
The valve settings are described as follows in plain text on the corresponding
instruction sign:
(a) CLEAN WATER
(b) SPRAYING
b
a
b
a
2
2

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3.2.3 Valve for the internal cleaning
The internal cleaning valve (3) must be set to “Internal cleaning ON” for cleaning
the inside of the main tank. The intensity of the internal cleaning can be increased
if the distribution valve is set to the “chemical inductor”.
(a) Internal cleaning ON.
(b) Internal cleaning OFF.
The valve settings are described as follows in plain text on the corresponding
instruction sign:
(a) INTERNAL TANK CLEANING ON
(b) INTERNAL TANK CLEANING OFF
b
a
3

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3.2.4 Distribution valve
In combination with a chemical inductor, the liquid conveyed by the pump is
delivered via the distribution valve (4) either to the spray boom or to the chemical
inductor. If no chemical inductor is present, the valve is usually in the “spraying”
position.
(a) Chemical inductor
(b) Spraying
The valve settings are described as follows in plain text on the corresponding
instruction sign:
(a) INJECTOR ON
(b) INJECTOR OFF
b
a
4

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3.2.5 Induction valve
The liquid from the chemical inductor is delivered into the main tank by activating
the induction valve (5). The induction valve operates proportionally. It should
therefore only be activated insofar as there is always sufficient water remaining in
the chemical inductor for dissolving the medium.
(a) Induction ON
(b) Induction OFF
The valve settings are described as follows in plain text on the corresponding
instruction sign:
(a) INDUCTION ON
(b) INDUCTION OFF
b
a
5

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3.2.6 Valve block of the chemical inductor
All filling and cleaning functions of the chemical inductor as well as the functions
of the outside cleaning are performed using the individual valves of the valve
block (7). The distribution valve must be switched to “chemical inductor”.
Valve swivelled up = ON
Valve swivelled down = OFF
(8) Agitation of the liquid in the chemical inductor
(9) Filling the chemical inductor using boundary wetting
(10) Canister rinsing (only with clean water)
(11) Outside cleaning (only with clean water)
The valve functions are described as follows in plain text on the corresponding
instruction sign:
(8) AGITATION NOZZLE
(9) BOUNDARY WETTING
(10) CANISTER RINSING
(11) OUTSIDE CLEANING
1110
98
7
8 9 10 11

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3.2.7 Rinsing valve for cleaning the pressure filter
The self-cleaning of the pressure filter is
performed with the rinsing valve (6). This
can be infinitely adjusted from 0 % to
100 %.
The rinsing valve (6) must be closed for
system cleaning when the main tank is
partially filled. When the rinsing valve is
completely open, the system pressure
can drop to 1 bar. If necessary, the
rinsing valve must be less widely
opened accordingly.
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