Laski LS 150 T User manual

OPERATING INSTRUCTIONS
CHIPPER
LS 150 T
Orig. version: 08.2016

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Foreword
Thank you very much that you have just purchased our product, the chipper
LS 150 T. Our company has been engaged in production of equipment for wood residues
crushing and disposal for many years and has gained considerable experiences in this field.
Quality of our small and also powerful machines is proven in 40 countries of Europe and Asia
we export to.
Permanent innovation of the Laski s.r.o. manufacturing assortment was crowned by the Gold
Medal for our complex family of shredding and chipping equipment KDO and LS at the
occasion of the International Trade Fair.
Grand Prix Techagro 1998
Grand Prix Silva Regina 2002
Grand Prix Silva Regina 2008
This manual brings important instructions for users, i.e. instructions for putting the machine
into operation, work safety and operating experiences. You will learn how to carry out
maintenance, repairs and servicing and who is authorised for doing checks and other actions
on the machine.
Your local dealer will give you this manual with instructions for operation and maintenance
while taking this new machine over. Make sure, if you understand everything. If not, do not
hesitate and contact your dealer and ask him for explanation. It is very important for you and
your work safety to understand all instructions given in this manual.
The firm Laski spol. s r.o. does not bear any responsibility for any claims resulting from
disobedience to the instructions given in this manual.
This operation manual includes also work safety instructions in various parts of the text. If
there is any work safety rule or instruction in general description, then this instruction is
indicated with the following symbol:

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Contents
FOREWORD ...........................................................................................................2
CONTENTS.............................................................................................................3
PRODUCT IDENTIFICATION...........................................................................5
WORK SAFETY INSTRUCTIONS.....................................................................8
UTILISATION .........................................................................................................8
NOT ALLOWED USE ..............................................................................................8
GENERALLY ..........................................................................................................8
WORK SAFETY SYMBOLS....................................................................................14
TRANSPORT OF PRODUCT/HANDLING .................................................................15
PRECAUTIONS IN DESIGN ....................................................................................16
CONTROLS ..........................................................................................................18
USE........................................................................................................................19
TRANSPORT SAFETY ...........................................................................................19
STORAGE.............................................................................................................21
BEFORE PUTTING INTO OPERATION ....................................................................21
COUPLING TO TRACTORS ....................................................................................23
PUTTING INTO OPERATION..................................................................................24
CHIPPING ............................................................................................................25
PUTTING OUT OF OPERATION ..............................................................................29
EMERGENCY SITUATIONS ...................................................................................29
TECHNICAL DESCRIPTION...........................................................................30
Chipping Device.............................................................................................30
Frame.............................................................................................................31
Technical Parameters.....................................................................................31
MAINTENANCE.................................................................................................32
Lubrication.....................................................................................................32
Blade Grinding...............................................................................................33
Chipping Adjustment......................................................................................35
NOSTRESS System –Speed Regulation .........................................................36
NOSTRESS SYSTEM PROTECTION AGAINST OVERVOLTAGE...............................37
Maintenance Intervals....................................................................................38
Checking, Oil Exchange.................................................................................39

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FAILURES AND TROUBLESHOOTING ....................................................................39
WASTE DISPOSAL ...............................................................................................41
USE OF THE CHIPPER EQUIPPED WITH A HITCH.....................................................41
WARRANTY........................................................................................................44
SERVICE REPORT ............................................................................................46

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Product Identification
Our product is identified with its serial number stamped in its type plate on the frame. Upon
take-over of the product we recommend you to fill required data in the following form
concerning the given product and your dealer.
Type of product:
…………………………………………………….
Serial number of product:
……………………………………………………..
Dealer's address:
……………………………………………………..
Address of authorised service:
……………………………………………………..
Date of delivery:
……………………………………………………..
Warranty expiration date:
……………………………………………………..
Interruption of warranty period:
……………………………………………………..
This type plate includes:
-manufacturer's
data
-type
-serial number
-weight of machine

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Work Safety Instructions
Utilisation
This chipper, being coupled with a tractor three-point hitch, is designed for
disposal of wood waste, twigs, barks, branch-wood and other above-ground
biomass or for manufacture of chips from aforesaid materials and also for disposal
of redundant timber, such as sticks, deals, pickets etc. The chipper can dispose all
these materials with diameter up to 160 mm or flat boards and plates with thickness
up to 60 mm. These wooden pieces must be free of metal, glass and other similar
objects. While working, the chipper must be relatively levelled.
The chipper should be controlled and operated by two attendants who in turns load
materials to be chipped in a loading chute.
Not Allowed Use
The chipper is not allowed to be used for disposal of aforesaid materials with
foreign matters and objects, such as metal, steel binding bands, glass cullet, stony
debris, ceramics etc.
It is not allowed to use the chipper in the presence of unauthorised persons who
may stand or move in direction of discharge ducting. At work in residential zones
use the machine in accordance with regulations of the local authorities to avoid
disturbing of local inhabitants (noise level). It is not allowed to use the chipper, if
its loading chute height above the ground is less than 600 mm and if its cardan
shaft is deformed or damaged.
Generally
-This machine is allowed to be operated only by attendants who are over 18 yrs
old, physically and mentally capable and demonstrably instructed with its
operation.
-One of two attendants at least (a tractor driver) should have a respective
driver's license, group "T".
-This machine can be operated by two persons only.
-Any training course for attending personnel should include also practical
operation under supervision of an experienced person or your dealer and
necessary work safety instructions.
-Before working learn all functions of individual controls and safety elements
(safety frame) and carry out functional checks before any use. Check
especially loading of materials, i.e. the controller frame. By pushing the

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concerned controller in infeed direction this machine must stop loading
materials and by its next pushing the loading rolls should turn back while
being under permanent pressure (pushing). The controller frame have to be
advanced in front of the hinged loading chute edge so that the attendant stops
the loading rolls, or let them turn back, at pushing by using parts other than
hands (e.g. shoulder, elbow, hip, legs etc.).
-It is strictly forbidden to change or to set the controller frame so that the STOP
position is under the loading chute edge.
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-To stop loading it is also possible to press the STOP button under the loading
chute.
-It is forbidden to tighten the fixing nuts on the safety frame with intend to
increase its resistance against unwished switching off. Required force for
switching control should remain on values preset by the manufacturer, i.e. up
to 80 N in the lower horizontal frame part.
-Any removal of safety elements and guards from the machine and any further
operation without them are strictly forbidden.
-While chipping it is not allowed to enter the area of ejected flying wooden
chips.
-The end piece of the discharge duct (its upper turnable part) can be set only in
angles, see following figure. Never direct it toward the attendant's place!!

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-While working the chipper should rest on the ground.
-Keep this machine beyond children's and unauthorised person's reach. Avoid
their attendance while chipping.
-When using the chipper without any container or closed bin, keep anybody
beyond the area where chips are being thrown.
-When using the chipper with such a bin, never look inside if the chipper is still
working.
-When leaving the machine take always the switch key out of ignition.
-Every operator of this machine is fully responsible for any injury or damage
caused to the third persons within the operating reach of the machine.
-At work in residential zones use the machine in accordance with regulations of
the local authorities to avoid disturbing of local inhabitants (noise, flying
chips).
-Warning !!! Be aware of ejected particles. They have substantial kinetic
energy. If the loaded wooden material contains not allowed parts, such as
metal, sand, glass etc., then such objects can reach a longer distance than
wooden chips. Direct the discharge duct to regulate its ejecting as needed.
-Instructions for use of the cardan shaft operation and the trailing tractor are an
integral part of this manual and should be always respected.
-While coupling the chipper to a tractor do not stand between its towing bar
and a tractor. Do not stand behind a towing tractor while backing. Ask other
person to help you with coupling.
-First it is necessary to couple the cardan shaft to the chipper input shaft, then
the lower linkage, the upper drawbar of the three-point hitch and finally the
tractor PTO shaft.

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While chipping the operator is obliged:
to use only such a chipper which is in optimal operating condition, not
damaged through transport, storage of from previous operation,
to check functions of all controls and safety elements, particularly the
controller frame, before putting the chipper into operation,
to avoid disturbing of other people with noise, exhaust fumes or ejected flying
particles (at windy weather),
to keep traffic rules and local regulations when going or working on or nearby
public roads,
to turn the machine off if the discharge duct is clogged.
Clean the duct at standstill only. For cleaning use only suitable hooks or bars
to release pressed materials. After repeated putting the chipper into operation
let the machine run idle in the chipping mode to empty the whole discharge
ducting. If proper cleaning is required, then take always the switch key out of
ignition before removing its hoods.
When working never lean over the loading chute and never push wooden
materials with your hand or leg only. Use always a wooden stock or a bar to
push materials between the loading rolls.
While working wear always personal protective equipment - protecting shield
or goggles, protective gloves, working shoes and working cloth properly
buttoned. Avoid wearing free parts, such as ties, scarves and shawls, belts etc.
In case of longer hairs use always a proper head piece. Otherwise, such a
person is not allowed to operate this machine.
In case of two attendants it is necessary to make simple signals clear before
working and to appoint one who will manage the work.
If any object, not allowed to be chipped, falls down into the loading chute, do
not try to pull it out with your hand. It is very hazardous for your health and
operational safety. Turn always the machine off.
-Keep traffic lights and work safety symbols in proper order.
-Check materials to be loaded and remove all undesirable objects. If you see
such particles in ejected chips, stop working immediately.
-This manual describes problems and faults which could occur at work and
which may be remedied by an instructed person. In case of other problems and
faults do not hesitate and contact the manufacturer. He is always ready to help
you.
-Never do any technical changes or any actions which are neither given in this
manual nor allowed by the manufacturer. The machine, not correctly installed
or adjusted, may run without problems now but in the future it could damage

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any of important parts. Pay regular attention to all joints and bolts. Keep them
properly tightened.
-Do not put any objects or tools on the machine.
-The manufacturer does not bear responsibility for any damages or injures
caused to the third persons or to other equipment resulted from disobedience
to instructions given in this manual.
-When handing the machine over to another person make sure if all controls,
guards and other safety elements are complete and fully functional.
-Never remove guards and other safety elements. They serve for your safety.
-Keep the given intervals for checks of bolted joints.
-Always after work clean all parts of the machine properly. Pay your attention
especially to any oil spots or fuel leakage. Clean any oily spots.
-Some parts of the machine can be hot while in operation. Avoid any settling of
flammable chipped materials on such parts or close to fuel tank, hydraulic oil
tank and exhaust manifold. Stop working if such deposits exceed 1 mm.
-Any servicing can be done only if the machine was put out of operation, its
battery was disconnected and the cardan shaft was uncoupled. If the chipper is
still coupled to the three-point hitch, block the tractor (wheels) against
unwanted motion.
-Do not use petrol as a cleaning agent.
-Keep open fire away while filling the tank.
-Keep the machine beyond reach of open fire.
-Some parts of the machine run warm, such as hydraulic elements, belts and
pulleys. Do not touch them when the engine is still running or having been just
stopped.
-Do not let the engine running in high speed unreasonably.
-Do not start the machine in confined or ill-ventilated spaces.
-Combustion gases outgoing from a tractor are toxic!
-Do not use the machine under conditions of low visibility, especially at foggy
weather on public roads.
-Do not use the machine without prior reading this manual.
-Do not carry out any repairs that are specified for authorised services only.
-Do not carry out any repair where its solution exceeds your experiences.
-It is strictly forbidden to work with the chipping device damaged (out-of-
balance, vibrations while running).
-While servicing the chipping device, or in the vicinity thereof, it should be
always blocked against unwilling motion (with its safety pin inserted).

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Before transport on public roads:
Set the machine in the transport position, i.e. with its discharge duck tilted
backwards and locked against motion. Be aware that traffic lights must remain
visible.
Couple the chipper to a towing vehicle properly and check proper pin
coupling.
Plug and check traffic lights of the chipper.
If necessary, remove all mud, especially from tires, before coming to a public
road.
Transport on public roads
When going on roads the chipper must be lifted at least 25-30 cm above the
ground.
Any transport on public roads is allowed only with the PTO shaft turned off
and the discharge duck tilted.
Any transport of persons or of any load on the machine is not allowed.
Never exceed max. allowed transport speed.
While putting the coupled chipper aside block the tractor wheels against
unwilling motion by means of scotch blocks.
Pay attention to handling performance on roads. Cornering, turning, braking
make new demands on driving.
Adjust driving speed to ambient conditions, especially at turning, obstacle
crossing, exits to plots etc.
This machine is approved to transport on public roads. Some restrictions are
given in your registration papers. Take these papers always with you.
Before coupling to a tractor check up the allowed weight limit in the tractor
hitch and compare it with the weight of your chipper. If a load on the tractor
front axle is less than 20% total weight, any coupling to a tractor is forbidden.
Note: Be aware that traffic rules and regulations in different countries may differ.

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Work Safety Symbols
This article introduces work safety symbols (pictographs) used on this machine.
Under the given pos. number there is their location on the machine. These work
safety symbols warn the operator against risks connected with the machine use.
Your respect to the symbol meanings is a precondition for your work safety.
1
2
3
4
5
Read this operating
manual before use.
Always follow the
manual while
maintaining,
servicing or repairing
the machine and take
always the switch
key out of ignition.
Do not stand
between tractor and
equipment while
coupling.
Warning! It swings
out while turning.
Warning! Rotating
parts - accident risk.

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6
7
8
9
10
Warning! Hot parts.
Warning! Turning
part is running out.
Warning! Ejected
objects hazard. Keep
away.
Warning! Close all
guards before
starting the machine.
Wear personal
protective
equipment.
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12
13
14
15
Keep safety distance.
Warning! Risk of
high-pressure liquid
leakage
Warning! Rotating
rolls. Pull-in hazard.
Warning! Hazard of
extremity injury by
rotating part
Warning! Accident
risk.
The user is obliged to keep all the work safety symbols legible, clear and
undamaged. In case of any damage or illegibility ask your local dealer or
an authorised service for a new relevant pictograph.
Transport of Product/Handling
-This product is delivered completely mounted and fitted on a wooden pallet.
-While handling the chipper you may use a lift truck.
-After coupling to a tractor any further handling is possible only according to
tractor technical parameters. The chipper should not bring any negative
impacts on tractor stability.
-Uncouple and put the chipper aside always on compact, flat and sufficiently
bearing surface only.
-Any work with the chipper is supposed on slopes with gradient up to 8oonly.

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Precautions in Design
This product is equipped with hoods and covers protecting rotary and hot parts
against touching. Protective covers are usually fixed, bolted down on framing.
Ignition box for starting, completed
with a removable switch key. Any
confusion with another ignition keys is
not possible. Turn the key in the RUN
position and the orange LED lights on,
i.e. the electric installation of the
machine is in its standby mode being
correctly connected to a towing tractor.
For correct function of the loading rolls
it is necessary to activate the safety
circuit by turning the key in the START
position. The green LED lights up, i.e.
the safety circuit is activated. After any
interruption of the safety circuit it is
necessary to activate it again.
Safety frame for material loading
serves as an actuator for the loading rolls
control, i.e. their stopping or reversing.
Once being pushed the chipper stops
loading motion immediately, the next
pushing brings reverse turning of loading
rolls.
Dangerous space behind the loading
rolls is protected with a hinged cover
and by a terminal switch which blocks
the drive if the cover remains opened.
Once opened the driving hydromotor
stops immediately. This cover is locked
with two bolts that should be properly
tightened.

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Dangerous space of the chipping wheel
is secured by a terminal switch. To swing
the discharge duck away or to open the
upper half of the chipping wheel guard it
is necessary to unlock the guard and
move it in the arrow direction, see figure.
It is not possible to set the loading rolls
in motion if the guard remains opened.
Safety pin of the chipping device
rotor serves for rotor blocking at
blades exchange and servicing. The pin
is chained on the machine side. A hole
for pin inserting is covered with a
rubber stopper. The chipping device is
blocked if the pin is inserted into a bush
on the rotor.
Terminal switch of a hinged part of the
loading chute turns the driving engine
off if the chute is tilted.

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Emergency STOP button blocks
loading immediately –similar function
as that of the safety frame.
Controls
Ignition box –used for supply and control of the
safety circuit.
CAUTION: Despite the fact that this machine is not
equipped with any driving engine, its ignition key,
analogously to engine starting, must be set in the
START position and afterwards in the RUN position.
The "S" key serves for control of the running hours
counter (daily, total).
Safety frame for material loading with following
positions:
As seen from the attendant's place:
position for MATERIAL LOADING, middle position for
ENERGENCY STOP, by pushing and under
permanent pressure for REVERSE RUN.
This lever controls loading start, stopping and
reversing

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Controller of loading speed - installed under
a hinged part of the loading chute
Change of loading roll speed
Speed regulation in range from 0 to 40 m/min
Emergency STOP button blocks loading
immediately –similar function as that of the
safety frame.
Use
Transport Safety
-For transport the chipper should be coupled to a tractor and locked properly in
its hitch.
-Avoid any side swinging of the chipper and set the lower drawbar tighteners
accordingly.
-Set up the upper drawbar so that the chipper is aligned.
-Plug traffic lights (seven-pole plug socket).
-Checks before drive:
lights
machine for completeness
depositing of cardan shaft (if not coupled)
locking of turnable parts in transport position
depositing and locking of discharge duct

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locking of hinged part of loading chute in transport position
fitting of triangular symbol for slowly vehicles on framing
-It is strictly forbidden to transport the chipper with the PTO shaft on.
-It is not allowed to transport any objects or loads on the chipper.
-Never couple another machine or implement to the chipper.
-Keep side marker lights clean.
-Avoid any damage of side marker lights.
-If necessary, remove all mud and other deposits before coming to a public
road.
-Putting the chipper aside block the tractor against unwilling motion by means
of scotch blocks and mark it as a transport obstacle.
-While going on public roads, keep all traffic rules not to endanger other road
users.
-While working along public roads, keep direction of ejected chips away from
other road users and avoid any road fouling.
-In case of any fault repair the machine always off the road.
-While repairing, avoid any site fouling with oil products, dirty rags etc.
Transport position
Hinged part of loading chute up and locked, discharge duct locked
against turning.