LEHNER POLARO User manual
Operating manual with parts list
POLARO®
Last updated: April 2016
Serial number:..................................................
Original operating manual
Publisher's information
2 / 31 1.0 POLARO®
Publisher's information
LEHNER Maschinenbau GmbH
Haeuslesaecker 14
D-89198 Westerstetten
Tel.: +49 7348 95 96 22
Fax: +49 7348 959 640
www.lehner.eu
This document must not be distributed, duplicated or utilised, nor may its content be communicated without express
permission. Compensation will be sought for all breaches. All rights reserved in the event of patent, utility model or
design registration.
English
Table of contents
POLARO®1.0 3 / 31
Table of contents
1 What you should know..................................................................... 5
1.1 Foreword........................................................................................ 5
1.2 About this operating manual.......................................................... 5
1.3 Warnings........................................................................................ 5
1.4 Description of the POLARO®........................................................ 5
1.5 Technical data for POLARO®........................................................6
1.6 Intended use.................................................................................. 6
1.7 Reasonably predictable misuse..................................................... 6
1.8 Warranty......................................................................................... 6
1.9 About your safety...........................................................................7
2 Mounting and start-up.......................................................................8
2.1 Mounting the frame........................................................................8
2.2 Mounting the hopper...................................................................... 8
2.3 Electrical connection...................................................................... 9
2.4 Fill the spreading material hopper............................................... 10
3 Operating the POLARO®................................................................ 11
3.1 Controls on the control panel.......................................................11
3.2 Switching spreading disc and agitator on and off........................ 11
3.3 Setting the speed.........................................................................12
3.4 Adjusting the slider opening.........................................................12
3.5 Opening/closing the slide.............................................................12
3.6 Setting the spreading width......................................................... 13
4 Settings............................................................................................. 14
4.1 Turning down............................................................................... 14
4.2 Determining the spreading width................................................. 14
5 Maintenance/Cleaning..................................................................... 15
5.1 Maintenance................................................................................. 15
5.2 Cleaning....................................................................................... 16
5.3 Transport and storage..................................................................16
6 Appendix........................................................................................... 17
Table of contents
4 / 31 1.0 POLARO®
6.1 EC Declaration of conformity....................................................... 17
6.2 Identification................................................................................. 18
6.3 Distribution box reference list...................................................... 19
6.4 POLARO® spare parts list...........................................................20
6.5 Spare parts list for control unit.....................................................22
6.6 List of spare parts for hopper, 110 litre, with motor flange........... 24
6.7 List of spare parts for hopper, 170 litre, with motor flange...........26
6.8 Spare parts list for saline agitator, 110 litre Hopper.....................28
6.9 Spare parts list for saline agitator, 170 litre Hopper.....................30
6.10 POLARO error message list........................................................ 31
What you should know
POLARO®1.0 5 / 31
1 What you should know
1.1 Foreword
Congratulations on purchasing the POLARO®, a high-quality and innovative product. Thank you for this expression
of confidence.
Thanks to its advanced design, meticulous material selection, state-of-the art manufacturing techniques and the
precision work of our employees, this equipment meets all efficiency, quality, reliability and value requirements.
Maintaining and servicing in accordance with the operating instructions ensures the safety of the device and main-
tains the value of your POLARO®.
1.2 About this operating manual
This operating manual is an important component of the POLARO® and must always be kept close to hand. It must
be read, understood and followed by everybody who works with the POLARO®.
Keep the operating manual in a safe place. If you sell your POLARO®, always pass this operating manual on to the
buyer.
1.3 Warnings
Warnings in this operating manual are identified as follows:
Danger!
Warning against immediate danger.
Non-observance of appropriate measures may result in death or severe personal injury
or serious damage to property.
Warning!
Warning of possible danger.
Death or severe personal injury is possible.
Caution!
Warning of possible dangerous situations.
Slight personal injury or damage to property is possible.
1.4 Description of the POLARO®
The POLARO® is a spreader for spreading winter salt, grit, sand and granulated fertilisers. It consists of a solid
frame, a hopper for the material to be spread and the electrical components.
The frame includes the spreading disc with slider/dosing equipment. The electrical components comprise the dri-
ve motor, speed sensor, distribution control box, control console cable, control cable, battery cable, control console
and breakaway safety cut-off.
A separate motor drives a slow-running agitator for grit, sand, smooth flowing salt or granulated fertiliser. As an al-
ternative for slow-flowing or damp salt, a special saline agitator is available as an accessory. This agitator is mount-
ed in an upright position in the hopper.
The speed of the spreading plate and disc can be regulated from a control panel in the driver's cab.
Advice
The POLARO® can be mounted on the front or rear of the carrying vehicle.
Note the gross weight of the filled spreader.
What you should know
6 / 31 1.0 POLARO®
1.5 Technical data for POLARO®
POLARO® 70 POLARO® 110 POLARO® 170
Dimensions L/W/H 570/485/870 mm 570/485/1050 mm 700/626/1070 mm
Net weight 29 kg 138 kg 42 kg
Capacity 70 l 110 l 170 l
Salt capacity 90 kg 130 kg 220 kg
Operating voltage 12 - 15 Volt
Fuse 25 Ampere
Power of drive motor (spreading disc) 60 W
Power of mixer motor 150 W
Speed range 40 to 600 rpm
Standard speed of agitator 54 rpm
Speed of saline agitator 27 - 29 rpm
Power consumption of motor Starting: up to 25 A
Normal operation: up to 13 A
Operating temperature -10°C to +70°C
Storage temperature -30 °C to +70°C
Length of battery cable 3 m 5 m 5 m
Length of control panel cable 2 m
Length of control cable 3 m 6 m 6 m
1.6 Intended use
The POLARO® is a spreader for spreading winter salt, grit, sand and granulated fertilisers.
1.7 Reasonably predictable misuse
POLARO® must only be used on approved carrier vehicles with suitable on-board electrical systems and sufficient
structural integrity.
POLARO® must only be used for approved media. The device must not be used for spreading crop protection prod-
ucts.
1.8 Warranty
Subject to proper use, LEHNER Agrar GmbH provides a 6-month guarantee and a 24-month warranty period on
the POLARO®.
Prior to any work being carried out, repairs under guarantee must be agreed with LEHNER Agrar GmbH.
For replacement parts, additional expenses are charged for any changes made to cables and plugs by the cus-
tomer.
Replacement parts are to be returned carriage paid.
Any changes to cable or plug connections without factory approval automatically invalidate the entire guarantee.
Rusted bearings are not subject to the manufacturer's warranty. Motors must not be opened or dismantled.
On receipt:
Check your POLARO® for any damage caused in transit.
Any such damage must be reported to the manufacturer within 24 hours of receipt.
What you should know
POLARO®1.0 7 / 31
1.9 About your safety
Read through this operating manual carefully before starting operation. Comply with the instructions, warnings and
safety information. Always keep this manual to hand at the point of use.
•Observe the accident prevention regulations, safety and operating regulations and the regulations for environ-
mental protection.
•Observe all applicable standards and guidelines.
•Observe the safety instructions.
•Avoiding injury to personnel or damage to vehicles incurring liability.
•Before operation, check that the hopper is correctly seated in its mounting and that the spreader is safely and
correctly attached to the carrier vehicle.
•Do not operate the spreader if there are technical safety defects.
•Make sure that technical safety defects are rectified immediately.
•When travelling on public roads and tracks used by agricultural vehicles, follow the applicable rules of the road.
•There must be no other persons in the spreading zone.
•Switch off the motor before carrying out any troubleshooting and cleaning work.
•Disconnect the electrical power supply for maintenance work.
•Do not reach into the hopper during operation.
•Never reach into the rotating or blocked spreading disk whilst the motor is running.
•It is essential to comply with the instructions of the spreading material manufacturer in question.
•Spreading tables and additional information about the spreading material used can be requested from the
spreading material manufacturer in question.
•LEHNER Agrar GmbH cannot accept any liability for the storage and application of the spreading material.
Mounting and start-up
8 / 31 1.0 POLARO®
2 Mounting and start-up
2.1 Mounting the frame
Warning!
Risk of injury due to weight of component
This can cause injuries.
The spreader is significantly heavier when the hopper is full.
Attention must therefore be paid to the proper mounting of the spreader on the carrier vehicle,
and to the carrying capacity of the vehicle tailgate or other panels. If necessary, fit with assis-
tance.
Warning!
Danger of excessive loads!
This can cause injuries.
The load carrying capacity shall be based on the regulations for load bearing equipment.
Warning!
Risk of injury.
Do not operate the spreader if there are technical safety defects.
The POLARO® can be mounted on the front or rear of the tractor, off-road vehicle or ATV.
The POLARO® can be mounted using an auxiliary bracket. Mounting holes are provided on the back of the frame-
work. for this purpose.
Remove the hopper before mounting the spreader.
The recommended discharge height is 0.40 - 1.00 m.
For information on disassembly, see Chapter 5.1, "Maintenance".
Advice
Dispose of packaging materials properly or save them for return to the manufacturer.
Retain the special pallet, as it is ideal for transporting the spreader.
2.2 Mounting the hopper
Mounting and start-up
POLARO®1.0 9 / 31
Warning!
Risk of damage to equipment by the use of grit and sand.
Risk of injury and damage to the spreader.
As an alternative for slow-flowing salt, a refined salt agitator is available as an accessory. This
agitator is not suitable for grit or sand.
1. Mount the hopper
2. Check that the hopper is well seated in the hopper platform (see arrow).
3. Check that the POLARO® is securely fixed.
2.3 Electrical connection
Caution!
Danger of short circuit
Ensure that the cables are routed without tension, kinking or chafing, and that they are not
routed around sharp edges.
Caution!
Risk of functional failure
Faulty cables or cables with incorrect dimensions can lead to malfunctions and damage to the
device. Only use original cables, or ones approved by the manufacturer.
Always push on the cap and lock it to protect electrical connections against damage.
Caution!
Damage to electrical system
During all work on the battery, please comply with the regulations of the vehicle manufacturer
in question.
Use only original cables or cables approved by the manufacturer, otherwise the complete warranty will be invalidat-
ed. Changes to cables undertaken by the customer shall be subject to additional charges in the event of repairs.
1. Mount support for the control panel in the vehicle cabin.
2. Plug the control panel cable into the three-pin socket 1 of the carrier vehicle.
If such a socket (1) is not available, use the battery cable supplied:
■Connect terminal (2) to the negative terminal of the battery (not to the bodywork).
■Connect terminal (3) (with fuse (4)) to the positive terminal of the battery.
■Lay the end of the cable with socket (1) in the carrier vehicle.
3. Plug the spreader cable into the 16-pin plug of the control panel.
To ensure an optimum electrical power supply, use the supplied battery cable.
Mounting and start-up
10 / 31 1.0 POLARO®
Caution!
Danger of short circuit
Observe the installation instructions of the adapter manufacturer
When fitting a 12/24 V adapters (available as accessory) it is necessary to connect a separate on/off switch in the
24 V supply cable, as the adapter consumes current in the standby mode.
Your device is now ready to operate.
2.4 Fill the spreading material hopper
Caution!
Health risk
Comply with the regulations of the spreading material manufacturer.
Caution!
Risk of injury.
Never open the hopper or touch the spreading disc when the drive motor is running.
1. Fill the hopper with spreading material immediately before starting work.
2. After filling, close the hopper.
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