Linolit SL 330 User manual

GRINDING AND POLISHING
MACHINE SL 330
I nstruction manual

CONTENT
1. Introduction 2
2. Presentation 3
2.1. Responsibility of the owner 3
2.2. Right of the manufacturer 3
2.3. Structure and functions 3
3. Description 4
4. Protective equipment 7
4.1. Start 7
4.2. Emergency stop 8
5. Operation 9
5.1. General safety precautions 9
5.2. Workplace safety 9
5.3. Electrical safety 9
5.4. Personal safety 11
5.5. Personal protective equipment 12
5.6. Adjustment of position of the grip 15
5.7. Replacement of the filter 15
5.8. Connecting the vacuum cleaner 16
5.9. Instructions for grinding. Abrasive tools 16
5.10. Concrete hardness testing 18
5.11. Selection of abrasive tools 18
5.12. Replacement of abrasive tools 19
5.13. Grinding the edges 20
6. Transport and storage 2 2
7. Start and stop 23
7.1. Before starting 23
7.2. Start 23
7.3. Stop 23
8. Technical maintenance 24
9. Technical characteristics 25

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1. INTRODUCTION
Warning! If the machine is used incorrectly, it can
be a dangerous tool that can cause serious injuries or
even death.
Before operating the machine, please read the
instructions carefully and make sure you understand
them.
Use personal protective equipment (see chapter
„Personal protective equipment“).
Warning! Grinding produces dust and inhalation
of dust may result in injuries. Use the respirator.
Always provide adequate ventilation.
This machine is in accordance with EU regulations. This
product should not be disposed of as household waste.
In ensuring the proper disposal of this product you will
help to prevent potential negative consequences for the
environment and human health, which may be caused
by improper processing of the product.
POLIRTLAK d.o.o.
Štihova ulica 10, 1000 Ljubljana, Slovenija
GRINDING MACHINE LINOLIT SL 330.3.220 SS
Weight: 95 kg
Rotational speed: 0-700
Voltage: 230 V, 50 Hz, AC
Current: 16 A
Year of production: 2016
IP protection: 54

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2. PRESENTATION!
Dear customer, thank you for buying the machine Linolit.
We hope that you will be satisfied with this product.
Purchasing any of our products gives you right to get the
right professional help in order to repair or maintain the
machine.
We hope that this manual will be useful. Have the
instructions close by. Following the content (for proper use,
service, maintenance, etc.) you will significantly extend the
life of the machine and increase its second-hand value. If
the machine is traded or sold, give the manual to the new
owner.
2.1. RESPONSIBILITY OF THE OWNER: The owner or
employer is responsible for sufficient knowledge of the
operator about the operation and safety measures of the
machine. Managers and operators have to read the
instructions and understand the content. They have to be
familiar with:
-safety instructions for working with the machine;
-application and limitations of the machine;
-operating procedures and technical maintenance of the
machine.
2.2. RIGHT OF THE MANUFACTURER: After the
publication of this manual our company may include
additional information concerning safety issues. The owner
is responsible for safe working practice. Our company is
continuously working on the improvement of our products
and therefore reserves the right to change the form and the
appearance of the machine without the prior notice.
2.3. STRUCTURE AND FUNCTIONS: Linolit products
have high performance characteristics, such as reliability,
the use of innovative technology, advanced technical
solutions and environmental friendliness. Read this manual
carefully before using the machine. For further
information, please contact your local dealer or our
company.

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3. DESCRIPTION
LINOLIT-330
1. The machine is suitable for grinding and polishing of
concrete surfaces of different hardness.
2. The machine is reliable and easy to operate.
3. The machine can be disassembled for easy transport.
4. The machine is suitable for processing edges and
junctions.
5. Working surface 330 mm.
Picture 1

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Picture 2
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Picture 3
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4. PROTECTIVE EQUIPMENT
Warning! Never use a machine with faulty
safety equipment. Carry out the checks,
maintenance and service instructions described
in this manual. In case of irregularities,
immediately contact a specialist to make the
reparation.
This section describes the machine's safety
equipment, its purpose, and how checks and
maintenance should be carried out to ensure
that it operates correctly.
4.1. Start
Attention! Before connecting the plug connect
the motor cable to the distribution board.
Switch
Turning the switch start/stop/reverse motion
(start switch) will start and stop the machine.
Checking the switch
Press on the STOP button and turn the speed
regulator.
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Reduce the pressure between the discs and the floor by
pulling down the grip, but without raising the machine
from the floor at startup.
Start the machine by turning the start switch right or
left. After that the machine is running smoothly and
increases the engine speed in 5 sec.
To stop the machine, turn the switch in the center
position.
4.2. Emergency stop
The emergency stop button is used to immediately stop
the engine operation. The STOP button interrupts the
power supply.
Checking the emergency stop:
- Press on the STOP button. Make sure the engine is
stopped.
- Release the STOP button (by turning it clockwise).
Reduce the pressure between the discs and the floor by
pulling down the grip, but without raising the machine
from the floor at startup.
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5. OPERATION
5.1. GENERAL SAFETY PRECAUTIONS
WARNING! This section describes basic safety rules for
using the machine. This information is never a substitute for
professional skills and experience. If you get into the
situation where you feel unsafe, stop and seek expert advice.
Contact your machine dealer, service agent or an
experienced machine user. Do not attempt any task that you
feel unsure of.
Before operating the machine, please read the
instructions carefully and make sure you understand
them.
Save the instructions and safety precautions for later use.
5.2. WORKPLACE SAFETY
The workplace should be kept clean and well lighted. In
dark and cluttered areas the risk for accidents is increased.
Do not operate the machine in areas at risk of fire or
explosions.
5.3. ELECTRICAL SAFETY
WARNING! When using electrical devices there is a risk
of electric shock. Avoid unfavorable weather conditions
and body contact with lightning conductors and metal
objects. Follow the instructions for use in order to avoid
injuries.
- Do not connect the machine to the electrical supply if
the socket or cable is damaged.
- Check that the mains voltage corresponds to the voltage
on the rating plate of the machine.
- Inspection and maintenance must be performed when
the engine is powered down and the plug is removed from
the socket.
- Always turn the machine off before unplugging it from
the electrical outlet.
- Do not move the machine while disconnecting it.
Disconnect the plug by pulling the plug, not the cable.
- Do not operate the machine with a damaged power cord
or plug. If the power cord or the plug is damaged, contact
your service representative to change a new one.
- Do not operate the machine where water can reach
the equipment. It can damage the equipment or injure
the operator.
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- Always disconnect the power cord when installing or
removing the engine cord from the distribution board.
Instructions for grounding:
WARNING! A poor connection may result in risk of
electric shock. In case of doubt about the reliability of the
grounding of the machine, contact a qualified electrician.
- Do not modify the plug. If the plug does not fit into the
socket, contact a qualified electrician to replace the socket.
- Ensure compliance with local laws and regulations.
- In case of doubt concerning the instructions about
grounding, contact a qualified electrician.
- The machine is provided with a grounded cable and plug
and must always be connected to a grounded socket. This
reduces the risk of electric shock in the event of failure.
- Using the machine, do not use adapters.
Cables and extension cords
- The voltage of the extension cord must agree with the
voltage specified on the nameplate of the machine.
- Use grounded extension cords.
- When operating a power tool outdoors, use an extension
cord suitable for outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric shock.
- Safe extension cord must be protected from moisture and
should not touch the ground.
- Keep the extension cord away from heat, oily substances,
sharp and moving objects. Damaged or entangled cords
increase the risk of electric shock.
- Make sure that the cables are not damaged and that they
are in good condition. Never use the machine if the cable is
damaged, rather put it into an authorized service workshop
for repair.
- Do not use folded extension cord in order to avoid
overheating.
- When starting to operate the machine, make sure cord is
behind you to prevent damaging it.
- Use only certified extension cords with sufficient reach.
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5.4. PERSONAL SAFETY
WARNING! Prolonged exposure to vibration has
negative effects on the blood vessels and can cause
disorders of the nervous system which is a serious
condition for people with impaired circulation. Contact
your doctor if you experience symptoms of
overexposure to vibration. These symptoms include
loss of feeling, tingling, pricking, pain, loss of strength,
changes in skin color or condition. These symptoms
normally appear in the fingers, hands or wrists. These
symptoms may be increased in cold temperatures.
- Use personal protective equipment (see chapter
"Personal protective equipment").
- Never use the machine if you are tired, if you have
drunk alcohol, or if you are taking medication that
could affect your vision, your judgment or your co-
ordination.
- Never allow anyone else to use the machine without
first ensuring that they have understood the contents
of the operator's manual.
- Your employer must make sure you have the
information you need or required training to work
with the machine safely and effectively.
- The presence of unauthorized people can decrease
attention, necessary for safe work with the machine.
Be extremely careful. Focus on the operation of the
machine. Never allow children to use or be near the
machine.
- Follow safety rules and do not wear loose clothing,
long hair, or jewelry that can get into rotating parts
during the machine operation.
- Do not squeeze and harm your fingers with
the machine open moving parts. Keep distance!
- Do not leave machine running unattended.
- Next to you, there needs to be another person that
will help you in case of an accident.
- Always be in a safe and stable position.
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5.5. PERSONAL PROTECTIVE EQUIPMENT
WARNING! You must use approved personal protective
equipment whenever you use the machine. Personal
protective equipment cannot eliminate the risk of injury but
it will
reduce the degree of injury if an accident does happen.
Ask your dealer for help in choosing the right
equipment:
Hearing protection
Respirator
Heavy-duty firm grip gloves
Protective glasses or visor
Tight-fitting, heavy-duty and comfortable
clothing that permits full freedom of
movement
Boots with toe-caps and non-slip sole
Before using the machine, read the instructions
manual and make sure you understand the
content.
Always have a first aid kit nearby.
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USE AND MAINTENANCE
- Never use the machine for other purposes than what it
has been constructed for.
- Make sure that all parts are in good operating
condition and that connections are properly connected.
- Never use a machine that is faulty. Carry out the
checks, maintenance and service instructions described
in this manual. Some maintenance and service measures
must be carried out by trained and qualified specialists
(see chapter "Technical maintenance").
- Do not modify safety equipment. Check it regularly to
be sure it works properly. The machine must not be used
with defective or damaged protective equipment.
- Never use a machine that has been modified in any
way from its original specification.
- Use only original spare parts. For more information,
contact the dealer.
- Run the machine only when the grinding head is on the
ground, except in case of checking the equipment as
described in this manual.
- Do not run the machine if the edge with the protective
cover is not fixed. For security purposes the connection
between the machine and the floor has to be rigid,
especially for dry grinding.
- When grinding, connect the machine to a vacuum cleaner
to remove dust.
- When replacing removable discs, disconnect the machine
from the mains; push the STOP button and remove the plug
from the supply socket.
- After every operation abrasive tools must be
removed.
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- Make sure that the protective cover is clean, not
damaged and fits tightly to the floor.
If the protective cover is damaged, replace it with a new
one.
- When you shut the engine off, the bearing disc stops
spinning after a short time. Continue with grinding until the
grinding
head stops spinning completely. Before lifting the machine,
make sure the bearing disc stopped spinning.
- When grinding adhesive surfaces, such as asphalt, paints etc.,
after completed work slightly lift the front part of the machine
to prevent sticking to the floor because of the heated surfaces.
Before lifting the machine, make sure the bearing disc stopped
spinning.
- The temperature of removable discs after the operation can
be very high. Before removing them wait until the machine is
cool. Use protective gloves.
- Do not use the machine on the sand, stairs, walls, roof,
and
ceramic tiles.
- Do not use the machine, if it is exposed to precipitations.
- When using the machine, be careful not to hit the power
cord.
- Make sure no one is present at a distance of one meter in
front of the machine.
- In case of failure contact the company Polirtlak d.o.o.,
Štihova ulica 10, 1000 Ljubljana,Slovenia) to repair the
machine.
CABLES AND SOCKETS
The cable from the inverter to the electric motor: wire
diameter of 2,5 mm, quantity of wires in the cable 4.
Power cord: 2,5 mm, quantity of wires in the cable 3.
Sockets of 16 amps.
Type of sockets: ABB 316-P6 16А380-415 3P+1 IP44.
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5.6. ADJUSTMENT OF POSITION OF THE GRIP
The position of the grip is
steplessly adjustable. In order
to adjust the position of the
grip, loosen the screws on the
lock. Set the grip to the desired
position and tighten the screws.
5.7. REPLACEMENT OF THE FILTER
To replace the filter, loosen
4 screews M4, remove the filter cover, replace the filter,
put the filter cover on its place and tighten the screws.
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5.8. CONNECTING THE VACUUM
CLEANER
For complete dust collection, use vacuum
cleaners Linolit.
Connect the vacuum cleaner to the dust conduit,
use the hose of 60 mm.
Make sure that the filters in the vacuum cleaner are
clean and not damaged. When working, pay attention to
the formation of the dust.
5.9. INSTRUCTIONS FOR GRINDING.
ABRASIVE TOOLS
Usually abrasive segment consists of two
components:
1. Abrasive material (usually referred as abrasive
particles). The size of abrasive particles affects the size of
scratches (deep and shallow) that remain after grinding.
2. Bond (metal or resin). Using metal as a bond, the
final product is called segment with metal bond or
sintered abrasive segment. Using resin as a bond,the
final product is called abrasive tools with resin bond
or polishing disc. Hardness of the bond affects the
wear rate of the abrasive material.
1. Changing the abrasive particles to smaller
parts/grains affects the functioning of abrasive tools
as follows:
-less deep scratches
-increased service life of abrasive tools
An opposite effect is achieved, if changing the
abrasive particles to bigger parts/grains.
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2. Stiffening bond:
-less deep scratches;
-increased service life of abrasive tools;
-reduced productivity.
An opposite effect is achieved, if mitigating the
stiffness of metal or polymer bond.
Increasing the quantity of abrasive pads under
the machine result in:
-reduced pressure on the individual abrasive pad;
-lower degree of wear;
-reduced load on the machine and lower
power consumption;
-less deep scratches (particularly on the soft floor);
An opposite effect is achieved, if reducing the quantity
of tools under the machine.
Abrasive pads are designed to meet the high
performance surface treatment. The lifetime of
abrasive tools can be affected by following factors:
-pressure;
-stiffness of the bond;
-size of abrasive grinding grain;
-number of segments under the machine;
-additional abrasive material on the floor (e.g.
sand, silicon carbide) increases wear.
Usually if the abrasive disc wears out faster, the
productivity is higher. Changes in the factors above
may affect:
-the distribution of scratches;
-the consumption of electrical current;
-the surface plane (see chapter
"CONCRETE HARDNESS TESTING");
-the ease of operation.
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5.10. CONCRETE HARDNESS TESTING
Different types of concrete are characterized by their
compressive strength; different countries use various
indicators to evaluate the compressive strength (e.g.
pounds/square inches and MPA). Generally, if the
compressive strength is higher, the concrete is harder, and it
is harder to grind it.
In addition to compressive strength, there are other factors
that affect the hardness of the floor and therefore determine
the selection of abrasive pad. Most often when talking about
grinding and polishing, this refers to the upper layer (5
mm). Concrete surface treatment and the condition of
concrete surface have much bigger impact on the selection
of abrasive segment than the compressive strength.
Surface characteristics, important for the selection of
abrasive pads.
5.11. SELECTION OF ABRASIVE PADS
Usually, if the concrete surface is very smooth (e.g. in the
case of intense polishing/smoothing of the floor), the concrete
characteristic will be high compressive strength, and to
process it you will need to use the segment with a soft bond.
In the opposite case, if the concrete surface is very
rough/coarse (e.g. under the influence of rain, bumps,
chopping etc.), the concrete characteristic will be low
compressive strength, and to process it you will need to use
the segment with a hard bond. Presence of surface
coating/contamination (e.g., epoxy coatings, ceramic tile
adhesives, leveling compounds/smoothers) often have much
bigger impact on the selection of abrasive segment than the
compressive strength.
When grinding concrete tiles for the first time, if you are
not sure about the hardness of concrete, start processing by
using abrasive tools with harder bond. This will ensure
minimal wear of abrasive segments. Even if the hard
abrasive segment is not appropriate, all the damage is in a
loss of a small amount of time, without the wear of abrasive
tools.
In the opposite case (e.g. using first abrasive tools with soft
bond), if the concrete is soft and has a rough or coarse
surface, there is high probability of fast wear of a
significant number of abrasive tools.
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Method of placing abrasive segments on the machine is
very important; it affects the machine operation,
productivity and final quality of concrete surface. Our
company recommends using 6 pads.
You can also use 3 pads.
5.12. REPLACEMENT OF ABRASIVE TOOLS
Turn off the machine, and unplug the power cord of the
machine from the power supply. Keep a pair of gloves
handy, because the pads can be very hot.
Place the machine in a horizontal position.
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