Kesla proG 20 User manual

GRAPPLE proG
20, 25, 25E, 25P, 26, 26E
OPERATION
SERVICE
SPARE PARTS
2018 09
(a translation from the original version)

GRAPPLES – USER MANUAL 1
INDEX
1.GENERALINSTRUCTIONS................................................................................................................................2
1.1.ABOUTTHEUSERMANUAL.....................................................................................................................................2
1.2.CONTACTDETAILS...................................................................................................................................................3
1.2.WARNINGANDINSTRUCTIONDECALS....................................................................................................................3
2.IMPORTANTSAFETYINSTRUCTIONS................................................................................................................5
3.INTRODUCTIONOFTHEMACHINE...................................................................................................................8
4.INSTALLATIONINSTRUCTIONS........................................................................................................................9
4.1.INSTALLINGTHEGRAPPLE.......................................................................................................................................9
4.2.SAFETYGLASSESOFTHEBASEMACHINE.................................................................................................................9
4.3.INSTALLATIONOFTHEHYDRAULICS......................................................................................................................10
5.OPERATIONINSTRUCTIONS..........................................................................................................................11
5.1.SAFETY...................................................................................................................................................................11
6.MAINTENANCE.............................................................................................................................................12
6.1.SAFETYINMAINTENANCE.....................................................................................................................................12
6.2.GENERALINSTRUCTIONS.......................................................................................................................................12
6.2.1.Spareparts....................................................................................................................................................12
6.2.2.Cleaning.........................................................................................................................................................12
6.2.3.Welding.........................................................................................................................................................12
6.3.REGULARSCHEDULEDMAINTENANCE..................................................................................................................13
6.3.1.Afterthefirst20hours..................................................................................................................................13
6.3.2.Dailymaintenance(orafterevery20hours).................................................................................................14
7.HYDRAULICSYSTEM–FUNCTIONANDADJUSTMENTS..................................................................................15
7.1.SAFETYINSTRUCTIONS..........................................................................................................................................15
7.2.HYDRAULICOIL......................................................................................................................................................15
7.3.BIODEGRADABLEHYDRAULICOILS........................................................................................................................16
8.TROUBLESHOOTING...........................................................................................................................................17
8.1.GENERAL...............................................................................................................................................................17
8.1.1.Mechanicalfaults..........................................................................................................................................17
8.1.2.Electricfaults.................................................................................................................................................17
8.1.3.Hydraulicfaults.............................................................................................................................................17
9.DISPOSINGOFTHEMACHINE.............................................................................................................................17
APPENDIX1:DECLARATIONOFINCORPORATIONFORPARTLYCOMPLETEDMACHINERY.......................................18
APPENDIX2:TERMSOFWARRANTY......................................................................................................................19
APPENDIX3:CERTIFICATEOFDELIVERY.................................................................................................................22
APPENDIX4:CUSTOMERFEEDBACK.......................................................................................................................24
APPENDIX5TECHNICALDATA................................................................................................................................25

GRAPPLES – USER MANUAL 2
DEAR CUSTOMER
Thank you for the confidence you have shown towards KESLA product. We wish you the
best of success in your efforts. Please read through this owner's manual carefully,
because thorough knowledge of the machine, correct adjustments and careful
maintenance will guarantee user safety and reliable operation of the machine. It is
important that every part of this manual is understood and that the instructions are
followed. In unclear situations, please contact the seller of the machine. You can also give
a feedback to Kesla by a questionary in the end of this manual or in www.kesla.com.
1. GENERAL INSTRUCTIONS
1.1. ABOUT THE USER MANUAL
This manual concerns the operation and maintenance of a
KESLA grapple. Study the manual carefully before operating the
machine. Using the machine requires also some general
knowledge and skills in forestry. This user manual is written for
persons with prior practical experience in using forestry machines.
In addition to this user manual there is also a spare parts
catalogue and specified technical data.
The KESLA grapples are intended to be installed on carriers
specially equipped for forest use. Study carefully also the user
manuals of the carrier as well as control before operating or
servicing the machine.
The warning symbol is used with a very important safety warning.
Failure to observe these instructions may result in danger of
death or personal injury.
The note symbol reminds of a risk that the product, process or
environment may be harmed.
All the descriptions, instructions and technical specifications in
this manual are based on the latest information about the
machine structure when printing the manual. The product is
constantly developed and therefore the manufacturer reserves the
right to changes in the product without prior notice.
In case of malfunctions in the machine contact the seller of the
machine or a repair shop authorised by the seller.

GRAPPLES – USER MANUAL 3
1.2. CONTACT DETAILS
www.kesla.com
ORDERING OF SPARE PARTS [email protected]
MAINTENANCE AND WARRANTY ISSUES [email protected]
SPARE PART AND MAINTENANCE SERVICES tel.[phone]
1.2. WARNING AND INSTRUCTION DECALS
Warning and instruction decals have been attached to the grapple
to warn for possible risks caused by operation or to give
instructions for use. Following them will help avoiding accidents
and machine breakage.
DECAL NR 1: MACHINE IDENTIFICATION PLATE
Weight: Includes the weight of the grapple without any
optional equipment or accessories.
Type: Model name
Serial No: Individual identification number
Year: Manufacturing year
Fill the information on the machine identification plate in the
picture below.
When ordering spare parts or asking for repair instructions, tell the
seller or repair personnel the information given in the machine
identification plate. This way you can speed up getting help
regarding malfunctions and ensure that you get the right spare
parts as quickly as possible.

GRAPPLES – USER MANUAL 4
DECAL NR. 2: READ THE USER MANUAL
This label reminds the user to study carefully the user manual
before using, installing, servicing or repairing the grapple.
If the machine has several operators, the owner / keeper must
guide them in using, installing, servicing or repairing as well as
make the operators to study the user manual.
The owner / keeper must return to an authorised re-seller a filled
in delivery certificate and assurance certificate about familiarising
himself with the user manual, at the latest 14 days after the
delivery of the grapple to the client (see terms of warranty).
Mailing address for the delivery/assurance certificate:
Kesla Oyj, Metsolantie 2, FIN-59800 Kesälahti, Finland.
There is no storage place for the user manual in grapple so the
user must store the manual in the cabin .The user manual must
always be available to the user.
DECAL NO. 3: DANGER OF CRUSHING
The machine in operation has a risk zone of 25 metres. The
operator is responsible for ensuring that no bystanders enter the
risk zone.
2.

GRAPPLES – USER MANUAL 5
2. IMPORTANT SAFETY INSTRUCTIONS
DE-PRESSURIZING GRAPPLE:
After stopping the engine there may remain some pressure in
hydraulic components of the grapple. This pressure may cause
spraying of high-pressure oil. RISK OF SERIOUS INJURY!
BEFORE ANY MAINTENANCE DE-PRESSURIZE THE
GRAPPLE
These safety instructions do not cover all possible operating
conditions, but are helpful in avoiding dangerous situations and
accidents.
In addition to the given instructions, follow the legal safety
instructions and occupational safety regulations. Observe also the
instructions given in the user manuals of the base machine . The
dealer and owner of the machine have to make sure to comply
with all the local rules and regulations.
Familiarise yourself with the functions, controls and operating
instructions of the grapple before using the machine.
Follow all the precautions and instructions related to grapple use.
This way you may avoid accidents when working with the grapple.
Do not operate, service or repair the grapple under the influence
of alcohol or drugs.
Using the grapple is allowed only when all the safety equipment
and protections are appropriately in place and in good condition.
When operating, servicing or repairing the grapple, wear personal
safety equipment such as safety boots and helmet, ear protection
and safety goggles. Use well-fitting clothes with no long hanging
parts. Loose clothes can cause a danger of entanglement.
Note the danger of slipping when working near the grapple.
Check that no bystander is within 25 m of the grapple when you
start the engine and start operating. When necessary, place
warning signs around the logging site.
Pay attention to phone and power lines. Be extremely careful
when working close to high voltage power lines. Check safety
distances from the local electrical safety regulations. When
necessary, contact the telephone and power company.

GRAPPLES – USER MANUAL 6
In case of accident with phone or power lines, consider what to
do. When you have to leave the machine, do not touch the
machine and the ground at the same time. Exit outside the
electrical field jumping both feet together.
Always stop the engine of base machine and take care that no
one connects power when servicing the grapple. Make sure that
hydraulic pressure is released from all parts of the grapple. Note
that the grapple head may fall down if the boom lowers or the
base machine moves.
Perform maintenance activities with due consideration and calm.
When changing components, connectors and hoses, use only
spare parts with sufficient pressure classification.
The hydraulic pressure measurement and adjustment can only be
performed by a service engineer familiar with hydraulics, using
great care and consideration.
The engine must be stopped when connecting pressure gauge,
adjusting valves, repairing the grapple etc., because service
engineer is close to the moving parts of the grapple. While
measuring pressure, the persons must be out of reach of the
moving parts of the grapple.
Raising the pressure settings out the range specified by
manufacturer will cause an overload situation which can break the
grapple. Danger of accident!
Keep the hydraulic hoses in good condition. Change the broken
ones immediately. High-pressure oil spray from a broken
hydraulic hose or connector may penetrate under skin and cause
serious infection. In case of accident, contact physician
immediately.
When finishing work or stopping the engine always lower the
grapple head onto the ground or onto some other stable surface.
Notice that unwanted lowering of the crane may cause the
grapple falling down.
Staying under a hanging grapple is always prohibited without an
exception.
When finishing work, switch off the grapple. Switch off the main
power switch of the machine (if exists) when leaving the machine.
A blown fuse may be replaced only with a fuse of same size and
type.

GRAPPLES – USER MANUAL 7
When operating or maintaining the machine, avoid skin contact
with oil or grease. The oil and grease may contain additives which
can be harmful when frequently contacted with the skin. Always
follow the manufacturers’ and authorities’ instructions and
regulations when handling these substances.
Be careful of hot oil!
Use appropriate protective clothes, protective skin lotions or
appropriate gloves when handling oils and greases. Use safety
goggles as well.
Do not use lubricants or greases to clean your hands. Possible
metal flakes and additives in lubricants may damage your skin.
If the oil or grease causes changes to the skin, contact a
physician immediately.
Waste oil released in servicing or repair as well as oily hoses are
harmful for environment and must be taken to appropriate
treatment.

GRAPPLES – USER MANUAL 8
3. INTRODUCTION OF THE MACHINE
The KESLA grapples are designed to be installed on cranes
specially equipped for forestry use. Before mounting make sure
your grapple is suitable for the base machine size.
The grapple is used for the handling of felled, delimbed and cut-
to-length timber as the loading device of a timber loader.
Grapple is designed only for mounted hanging free.
The heads are intended to process trees, all other use is
prohibited.
Never use the grapple for handling stones, scrap, etc., and never
use it as a hammer.
Pushing the grapple hard against the ground may damage it.
When handling fragile goods, note that there is a risk that the
goods can be damaged.