Superabrasive ELITE Series User manual

LAVINA ELITE L25EB
User Manual
Tech Support Line: 800-987-8403 | www.superabrasive.com | [email protected]

Superabrasive User Manual Original Language Lavina®25EB 1/2021
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Superabrasive User Manual Original Language Lavina®25EB 1/2021
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WARRANTY AND RETURNS
WARRANTY POLICY FOR LAVINA®EB MACHINES
A warranty card must be submitted to Superabrasive within 30 days of purchase in order for the foregoing warranty to apply.
You can either mail a hard copy of the warranty card or submit it electronically - see page 2.
Superabrasive warrants, from the time of delivery and receipt by the original customer, new and unused products sold by
Superabrasive or Superabrasive-appointed distributors or dealers. Goods shall be free from defects in materials and
workmanship. Superabrasive or a Superabrasive-appointed repair facility shall either replace or repair any defects in the
Goods resulting from faulty design, materials, or workmanship. Products repaired or replaced during the warranty period
shall be covered by the foregoing warranty for the remainder of the original warranty period, or ninety (90) days from date
of the repair or shipment of the replacement, whichever is longer. Spare parts for repair will be either new or equivalent to
new.
Warranty period shall be 2 years from the time of delivery and receipt by the original customer, or 600 operating hours on the
machine - whichever occurs first. Superabrasive will cover the shipping charges for the transportation of the machine to
Superabrasive (or an approved repair facility) and back to the customer (within the contiguous 48 United States) in the event
that the damage occurs and is reported within 200 operating hours. Shipping charges, if covered by Superabrasive, must be
agreed upon in advance and approved by Superabrasive. Thereafter, the customer will have to cover the shipping charges to
Superabrasive and back. Superabrasive will not warranty Goods after a period of 2 years from the time of delivery and receipt
by the original customer, or 600 operating hours on the machine - whichever occurs first.
Superabrasive shall not be liable for any defects that are caused by circumstances that occur after the Goods have been
delivered and whilst the Goods are in the possession of the purchaser. Furthermore, the warranty does not include normal
wear and tear or deterioration. Wear parts are not warranted. Superabrasive is not liable for defects arising out of use of
non-OEM parts.
The Warranty is void if the purchaser has not followed the maintenance plan stipulated by the machine’s manual and warranty
card. The warranty is void if the purchaser repairs said Goods himself, or if repairs are conducted by a repair facility that is not
approved by Superabrasive. Superabrasive’s liability does not cover defects which are caused by faulty maintenance, incorrect
operation, faulty repair by the purchaser, or by alterations conducted without Superabrasive’s prior written consent. The same
applies to any alterations of the Goods or services performed by another party other than Superabrasive, a Superabrasive-
appointed distributor, or a Superabrasive-approved repair facility. The warranty is not applicable on a defect that arises due to
tools or parts that are not original to Superabrasive. Replaced defective parts shall be placed at Superabrasive’s disposal and
shall become property of Superabrasive. If such defective parts are replaced
within the warranty period, the shipping charges will be covered by Superabrasive. In warranty complaint cases, when no
defects are found for which Superabrasive is liable, Superabrasive shall be entitled to compensation for the labor, material cost,
and shipping charges, incurred by Superabrasive as as a result of the complaint.
The warranty herein is non-transferable, and only applies to the original owner or purchaser of the machine.
RETURN POLICY FOR LAVINA®EB MACHINES
The Lavina®ELITE machines may be returned, subject to the following terms:
In no case, a machine is to be returned to Superabrasive Inc. for credit or repair without prior authorization. Please contact
Superabrasive Inc. or your local distributor for an authorization and issuance of a return authorization number. This number
along with the serial number of the machine must be included on all packages and correspondence. Machines returned
without prior authorization will remain property of the sender and Superabrasive Inc. will not be responsible for them. No
machines will be credited after 90 days from the date of invoice.
All returns must be shipped freight prepaid. Returned machines may be exchanged for other equipment or parts of equal dollar
value. If machines are not exchanged, they are subject to a fifteen percent (15%) restocking fee.

Superabrasive User Manual Original Language Lavina®25EB 1/2021
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LAVINA ELITE L25EB .................................................................... 1
1. GENERAL INFORMATION................................................................. 5
1.1 MANUFACTURER........................................................................... 5
1.2 GENERAL DESCRIPTION ................................................................. 5
1.3 ENVIRONMENTAL CONDITIONS..................................................... 5
1.4 VACUUM CONNECTION................................................................. 5
1.5 LAVINA® 25EB MAIN COMPONENTS.............................................. 5
1.6 TECHNICAL DATA .......................................................................... 6
1.7 VIBRATIONS.................................................................................. 7
2. SAFETY INSTRUCTIONS.................................................................... 7
RECOMMENDED USE .......................................................................... 7
PROHIBITED USE................................................................................. 7
PREPARATION FOR WORK .................................................................. 7
PROTECTION DEVICES......................................................................... 7
ARREST FUNCTIONS ...................................................................... 7
SAFE USE ..................................................................................... 7
RESIDUAL RISKS ........................................................................... 7
BEFORE YOU BEGIN ...................................................................... 7
OPERATING MACHINE ................................................................... 8
AFTER WORK IS COMPLETED............................................................... 8
THE WORK AREA ..................................................................... 8
PERSONAL PROTECTIVE ................................................................ 8
EQUIPMENT (PPE)............................................................................... 8
OPERATOR.......................................................................................... 8
3. HANDLING AND TRANSPORTATION ..................................................... 8
3.1 ADJUSTING THE HANDLE............................................................... 8
3.2 TURNING THE MACHINE FROM WORKING TO TOOL MOUNTING
POSITION............................................................................................ 9
3.3 LIFTING ......................................................................................... 9
3.4 STORAGE ...................................................................................... 9
4. OPERATION..................................................................................... 9
4.1 PRELIMINARY CONTROLS.............................................................. 9
4.2 WATER FLOW CONTROL SYSTEM................................................. 10
4.3 ADJUSTING AND MOUNTING TOOLS ........................................... 11
4.4 VACUUM CONNECTION............................................................... 11
4.5 CONTROL BOARD........................................................................ 12
4.6 STARTING THE MACHINE............................................................. 12
4.7 OPERATING THE MACHINE.......................................................... 12
5. TOOLS AND ACCESSORIES ............................................................. 13
......................................................................................................... 13
6. POPULAR TOOLS ........................................................................... 14
CLEANING......................................................................................... 15
CHECK DAILY.................................................................................... 15
CHECK EVERY 200 WORKING HOURS................................................. 15
CHECK EVERY 400 WORKING HOURS................................................. 15
VACUUM .......................................................................................... 15
WATER LEAKS ................................................................................... 15
MECHANICALPARTS ......................................................................... 15
8. TROUBLESHOOTING...................................................................... 16
INDEX OF PROBLEMS AND SOLUTIONS.............................................. 16
8.1 SEPARATING THE HEAD FROM THE CARRIAGE ............................. 16
8.3 REPLACING POWER CORD AND PLUGS......................................... 18
8.4 DISMOUNTING AND MOUNTING TOOL HOLDER TO CHANGING V-
RINGS AND FELT-RINGS..................................................................... 18
8.5 DISASSEMBLING AND MOUNTING TOOL HOLDER TO CHANGE
BUFFERS AND ELASTIC ELEMENT....................................................... 19
8.6 CORRECTING DEFLECTION OF THE USED PLANETARY CHAIN......... 20
MOUNTING NEW PLANETARY CHAIN ............................................... 20
8.7 REPLACING THE PLANETARY DRIVING CHAIN WHEEL AND
PLANETARY TENSIONER .................................................................... 21
8.8 TENSIONING AND REPLACING THE BELTS..................................... 22
8.9 REPLACING THE DRIVEN PLANETARY GEAR (SPROCKET)............... 23
8.10 REPLACING THE PULLEY UNITS................................................... 24
8.11 REPLACING THE PLANETARY UNIT.............................................. 25
8.12 MOTOR CONNECTION ............................................................... 25
8.13 FAULT DIAGNOSIS INVERTER YASKAWA V1000.......................... 26
9. DISPOSAL...................................................................................... 28
10. MANUFACTURER’SCONTACTS..................................................... 28
11. SPARE PARTS............................................................................... 29
ASSEMBLY AND PARTS SPECIFICATIONS ............................................ 29
11.1 GENERAL PARTS ........................................................................ 29
11.2 BUMPER.................................................................................... 29
11.3 TOP COVER 1 PARTS .................................................................. 30
11.4 GUARD ASSEMBLY..................................................................... 30
11.5 TOP COVER ASSEMBLY .............................................................. 30
11.6. BOTTOM COVER 1 PARTS ......................................................... 31
11.7 PLANETARY DRIVE PARTS .......................................................... 32
11.8 PULLEY UNIT ASSEMBLY ........................................................... 33
11.9 BOTTOM COVER 2 PARTS.......................................................... 33
11.10 TOOL HOLDER PARTS............................................................... 34
11.11. CARRIAGE PARTS 1 ................................................................. 35
11.12 CARRIAGE PARTS 2 ................................................................. 36
11.13 CARRIAGE PARTS 3 .................................................................. 36
11.14 WHEEL ASSEMBLY.................................................................. 36
11.15 WATER TANK.......................................................................... 37
11.16 EXTERNAL WATER VALVE......................................................... 37
11.17 CONTROL BOARD ASSEMBLY ................................................... 38
11.18. LAVINA L25EB CONTROL BOX PARTS 200-240 V ...................... 39
11.19 ELECTRICAL SYSTEM................................................................ 40

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1. GENERAL INFORMATION
This owner’s manual is intended for the operator of the LAVINA®EB machine, the servicing technician as well as for anyone
involved with operating or servicing the machine. We recommend that you read the instructions very carefully and follow them
strictly. The manual includes information about assembling, using, handling, adjusting and maintaining your Lavina® ELITE floor
grinding and polishing machine.
1.1 MANUFACTURER
Superabrasive was founded in 1987, as a manufacturer of high quality diamond tools for the stone and concrete industry. Today,
Superabrasive is one of the world’s leading companies in the production of diamond tools and floor grinding machinery. At
Superabrasive, we strive to deliver the very best solutions to our customers, and enable them to work more efficiently.
1.2 GENERAL DESCRIPTION
The LAVINA®EB machine is intended for grinding, polishing and buffing concrete, marble, granite, limestone and terrazzo surfaces
with diamond tools. Additionally, the machine could be used for grinding wood floor surfaces.
The LAVINA®EB machine is a three-disc machine, which can be used wet or dry.
For best results, use only tools manufactured or recommended by Superabrasive and its distributors.
The LAVINA®EB machine is manufactured and fitted for the above-mentioned applications only! Every other use may possess
risks to the persons involved.
1.3 ENVIRONMENTAL CONDITIONS
The temperature range for operating the LAVINA®EB machine outdoors is between 41°F and 86°F or 5°C and 30°C. Never
use the LAVINA®EB machine during rain or snow when working outdoors. When working indoors, always operate the
machine in well‐ ventilated areas.
1.4 VACUUM CONNECTION
A connection for a vacuum dust extractor is located on the carriage. The LAVINA®EB machine does not include a vacuum dust
extractor. The customer must purchase the vacuum dust extractor separately. The vacuum dust extractor must be adapted for
floor grinders and have a minimum air displacement of 310m3/h with a negative vacuum of 21 kPa.
1.5 LAVINA® 25EB MAIN COMPONENTS
The Lavina®ELITE machine is made of two main component sections:
1.5.1 Carriage which contains:
Handle - the handle on the frame is adjustable in height and allows the operator to work in a correct and safe
posture (see point 3. Handling and transportation).
LED lights - the LED lights (Fig.1.1; Fig.1.2) enables the operator to work in darker areas. Existing lighting system
does not replace adequate overhead lighting.
The control panel (fig.1.3) is positioned on top of the frame and contains buttons and switches for start/stop the
machine also for the lights, RPMs control switch, hour meter unit, EMG button and the USB port for charging
your phone.
The water tank is on the opposite side of the frame, so that the weight of the water does not affect the
operation of the machine. The frame weight, on the other hand, is fully absorbed by the driving wheels.
Power box
1.5.2 Machine head which contains:
The Electric motor - its mounted on the base plate and it is driving the three heads with a belt system.
The planetary motion - it derives from the main engine, driven by a simplex roller chain.
The self‐leveling Guard is designed to have contact with the surface. Anytime, no matter the height of
the tool used.
 “Quickchange” tool holder is designed to hold the tools with “Quickchange”connection (All of our new tools
use the “Quickchange” connection and there is no more foam holders).

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1.6 TECHNICAL DATA
Lavina® 25EB
Voltage/Hz
1or 3 ph x 200-240V 50-60Hz
Amperage
Max 30 Amps
Power
7,5 kW
10 HP
Tool holder rpm
400-1100 rpm
Direction of rotation
The heads have clockwise / right rotation
Working width
655 mm
25.8”
Tool diameter (QC Plate)
3x 225 mm
3x 9”
Weight
342 kg
754 lbs
Grinding pressure Weights UP
158 kg
348 lbs
Grinding pressure Weights DOWN
194 kg
428 lbs
Water feeding
Peripheral
Water tank capacity
20 l
5.2 gal
Vacuum hose port
Camlock E250
Cable length
17.4 m
57 ft
Machine LxWxH
1800x710x1220 mm
71x28x48”
Packing LxWxH Crate 1
1480x840x1460 mm
58x33x57”
Figure 1.3
Figure 1.1
Figure 1.2

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1.7 VIBRATIONS
The vibrations of the machine are within the limits of directives and harmonized standards from the European Union when the
LAVINA®EB is operated with the recommended tools and in normal conditions.
SONOROUS EMISSIONS
The sonorous emissions are within the limits of directives and harmonized standards from the European Union when the
LAVINA®EB is operated with the recommended tools and in normal conditions. However, as previously stated, the operator
must wear ear protectors.
LABEL DATA
The data on the label provides the correct Voltage and kW (needed for operational purposes);
Weight (needed for transportation purposes); production year and serial number (needed for maintenance purposes).
CUSTOMER SERVICE
For customer assistance and technical support call your local distributor or call Superabrasive Inc. at
1‐800‐987‐8403 or visit us at: www.superabrasive.com , where you can download a copy of this manual.
2. SAFETY INSTRUCTIONS
Recommended Use
The LAVINA®EB machine is designed and manufactured to grind
and polish concrete, terrazzo, and natural stone floors. It can be
used for renovation as well as for polishing. The machine is
designed for dry or wet use. When using it dry, use a vacuum of
appropriate size. For more information, please refer to the chapter
on handling the vacuum connection.
Prohibited Use
The machine MUST NOT be used:
For applications different from the ones stated in the general
description chapter.
For non-suitable materials. In environments which:
-Possess risks of explosion,
-Possess high concentration of powders or oil substances in the
air,
-Possess risks of fire Feature inclement conditions,
-Possess electromagnetic radiation.
PREPARATION FOR WORK
Make sure that:
You have closed the work area, so that no person unfamiliar with
operating the machine can enter the area.
The tool plate and tools are adjusted to the machine properly.
There are no missing parts of the machine
The machine is in upright working position.
The protection devices are working properly.
The electrical cable is free to move and follow the machine
easily.
In order to keep the electrical cable from being damaged, no
vehicle should cross the zone where electrical cables are
situated.
PROTECTION DEVICES
The machine is equipped with several protection devices
including the following:
•An emergency stop button
•A protection skirt and a hood for protecting the tool plates.
These devices protect the operator and/or others persons from
potential injuries. Do not remove them. Before using the machine,
please ensure that all protection devices are mounted and function
properly. The Security plate prevents the QuickChange
pads to from loosening during work
Arrest Functions
Methods of arresting of the machine are following:
•Button to stop the motor (category 1)
•Emergency button (category 1)
Safe Use
The LAVINA®EB is designed to reduce risks correlated with its
use. However, it is not possible to fully eliminate the risks of an
accident with the machine. An unskilled or uninstructed operator
may cause correlated residual risks. Such risks are:
•Position Risks: due to operator’s incorrect working
position
•Entanglement Risks: due to wearing inappropriate
working clothes
•Training Risks: due to lack of operational training.
•NOTE: In order to reduce any consequences of the
above‐ mentioned risks, we advise that machine operators
follow the instructions in the manual at all times.
Residual Risks
During the normal operating and maintenance cycles, the operator
is exposed to some residual risks, which cannot be eliminated due
to the nature of the operations.
Before You Begin
Working area must be clear from any debris or objects.
A first‐time operator must always read the manual and pay
attention to all safety instructions.
All electric connections and cables must be inspected for
potential damages.
Ground wire system of the power supply must be also
inspected.
Perform general daily inspections of the machine and inspect
the machine before each use.
Always inspect the safety devices: Mount the Security plate
for the QuickChange pads.
The emergency break must be clear and working
The tool protector must be working
The machine must be clean Never operate the machine in
the rain!
Confirm that there are no missing parts especially after

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transportation, repair or maintenance.
•Before filling the water tank with water make sure the machine
is not working and the main switch is turned off.
•Before turning on the machine make sure that the base is placed
on the floor, the machine MUST NOT be in an upright position
when turned on!
Operating Machine
When operating the LAVINA®EB, make certain that there is no one
but you around the machine.
Never leave the machine unattended while working. The electrical
cable must move freely and must be damage‐ free.
The water hose must move freely and must be damage‐free. Check to
make sure the floor you are preparing to work on is
even. If the floor is uneven, it may damage the machine.
AFTER WORK IS COMPLETED
•Clean the machine and its surroundings properly
•Empty and clean the water tank
•Unplug the machine and wind up the electrical cable
•Store the machine in a safe place
The Work Area
•Ensure that people or vehicles do not enter the work area.
•Clear any cables or hoses from the work area.
•Always check the floor for debris.
Personal Protective
Equipment (PPE)
•Always wear safety shoes when working with the machine.
•Always wear ear protectors when working with the machine.
•All personnel in the immediate work area must wear safety
glasses with side shields.
•Always wear safety gloves when changing the tools.
•Always wear clothes suitable for the work environment.
OPERATOR
The operator must know the machine’s work environment.
Only one operator can work with the machine at a time. The
operator must be properly trained and well‐instructed prior
operating the machine.
•The operator must understand all the instructions in this
manual.
•The operator must understand and be able to interpret all
the drawings and designs in manual.
•The operator must know all sanitation and safety regulations
pertaining to the operation of the machine The operator
must have floor grinding experience.
•The operator must know what to do in case of emergency.
•The operator must have adequate technical knowledge and
preparation.
3. HANDLING AND TRANSPORTATION
3.1 ADJUSTING THE HANDLE
The Handle on the frame is adjustable in height and allows the operator to work in a correct and safe posture (Fig. 3.1, Fig.
3.2, Fig. 3.3, and Fig.3.5). Choose the upright position to move easy the machine.
Figure 3.2
Figure 3.3
Figure 3.4

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3.2 TURNING THE MACHINE FROM WORKING TO TOOL MOUNTING POSITION
Put the handles of the carriage as shown on (Fig. 3.5).
Ensure that the water tank is empty before flipping the
machine. Push the handles and flip in position shown on (Fig.
3.6). If necessary, help by placing your foot on the heel near
the control box. Always keep both rear wheels locked (Fig.
3.7). Unlock the wheels (Fig. 3.8) only when you wish to
move the machine.
3.3 LIFTING
Lifting the machine by crane is possible by using the handles of
the carriage (see fig. 3.5 and fig. 3.6).Do not lift any other loads on
the machine. Always use hoisting equipment rated for 350 kg (772
lbs) or greater.
3.4 STORAGE
Always store the LAVINA®EB machine in a dry place. Never transport the LAVINA®EB machine unprotected; it may be damaged if
transported unprotected and exposed to rain or snow.
When the machine is in storage and the temperature may fall down to or below 32F (or 0oC). You should empty the water from the
system:
- Leave open internal and external valves to drain water
4. OPERATION
4.1 PRELIMINARY CONTROLS
Inspect the working area as explained in the safety instructions. Fill in the water tank for wet use or connect the vacuum extractor
and ensure that the vacuum hose is clear and it will follow the machine easily.
Make sure that the electrical motor is connected with the power box and then you can connect the power cable with the electricity
and start the machine.
Figure 3.5
Figure 3.6
Figure 3.7
Figure 3.8

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4.2 WATER FLOW CONTROL SYSTEM
The water system is designed to supply water directly on the tools. The
water supply is coming either from the tank or from external water source:
-water supply from the tank:
Put the internal water valve into position „ON” (along the axis of
the machine) Figure 4.2 and close the external valve Figure 4.3, so
the water could flow from the tank through the internal valve over
the tools.
You can adjust the water flow by putting the internal valve in an
intermediate position.
- external water supply:
Put the internal water valve into position „OFF” Figure 4.1 and
open
The external valve Figure 4.4, so the water could flow through the
external valve over the tools.
You can adjust the water flow by putting the external valve
in an intermediate position.
ALWAYS USE CLEAN WATER TO PROTECT THE SYSTEM FROM DIRT.
Figure 4.1
Figure 4.2
Figure 4.3
Figure 4.4
Figure 4.5

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Figure 4.7
4.3 ADJUSTING AND MOUNTING TOOLS
Lavina® 25EB uses tool holder A63. With this new holder every one of our tools uses the “Quickchange” connection. To change the
tools you need first to unlock the butterfly (fig 4.6 in blue) by using the key we provide you (you can see it in the pictures fig. 4.7)
remove the security plate (fig 4.6 in red) then load the tools you want and insert the security plate again so the tools cannot go
backwards, rotate and lock the butterfly (as shown in fig.4.7). As you can see in fig. 4.6, for some of the new tools you need to
remove the security plate as they don’t need locking system at all but for the others always make sure that the tools are securely
locked.
In Lavina 25EB the holder is initially mounted with 3 buffers.
Mount the tools only after ensuring that there is enough diamond bond material left. Be sure that the plates are always clean
before mounting.
WARNING: Always secure the Quick Change tools with the butterfly (Fig.4.6 in blue), lock with the tool holder key
(Fig.4.7) and make sure that the butterfly is securely locked and it holds the security plate not to fall off.
4.4 VACUUM CONNECTION
To connect a vacuum cleaner, the Lavina 25EB is supplied with vacuum hose Cam Lock inlet C250 / vacuum hose diam. 2, 5 in
(63mm) (Fig.4.8).
Figure 4.8
Figure 4.6

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4.5 CONTROL BOARD
1. Hour Meter
2. USB charger.
3. Polishing/Grinding switch In “grinding” position, the
operator has the ability to control the rpm from 300 to 700 rpm.
In “Polishing” position, the range increases to 300 to 1100 rpm.
4. EMERGENCY button used to stop the motor in case of
emergency.
5. POWER glowing button - it glows when the machine is
connected to the electricity.
6. Forward/Reverse switch. Select forward for clockwise
rotation of the grinding plates or reverse for counterclockwise
rotation of the grinding plates (recommended configuration).
The preferred operating direction should be when the switch
is in the forward position. The proper direction of rotation of
the motor (counterclockwise) is indicated by an arrow on its
cover.
7. ALARM/Reset button resets the alarm of the inverter.
Button lights blue when the inverter goes into alarm mode.
8. LED lights switch
9. QR code. When you scan it with your phone for example,
it will redirect your browser to Lavina manuals page.
10. READY ON / OFF switch. If you want to start the motor it must be ON as it puts the inventor into standby mode (it glows when
it’s turned ON). If it’s off the inventor will be out of standby mode and you cannot start the motor. The switch returns to its starting
position after being released.
11. Cup holder.
12. Potentiometer.Controls the RPM of the grinding plates in a range of 300-1100 rpm.
13. RUN button. Start the motor (ready ON/OFF switch must be ON).
14. Digital Tachometer. Indicates the revolution per minute of the grinding plates (not the revolution per minute of the entire
unit).
15. STOP button which stops the motor.
4.6 STARTING THE MACHINE
First, follow the directions in the chapter on Safety Devices and Safety Instructions. Next, release the emergency stop (4), turn the
Ready switch (10) to the ON position to put the machine in standby mode. Check the potentiometer (12), and ensure that it is set to
the working speed. If you are working wet, add water to the floor surface. If you are working dry make sure your machine is connected
to the vacuum unit. Finally, hold the machine firmly and push the RUN button (13).
4.7 OPERATING THE MACHINE
Guide the machine in straight lines across the floor, slightly overlapping the previously completed surface with each new
line. Work at a constant speed, allowing the tools time to work at a speed appropriate for the tools’ grit size. Avoid
vibrations. Do not stop the machine while tools are still running as they will mark the surface of the floor. When working
wet, select the destination of the water feed with the water tap (fig. 4.2). When working dry, check the floor surface
periodically for dust accumulation. Check regularly to see if you’re vacuum works properly.
4.8 STOPPING THE MACHINE
The stopping of the machine must be done gradually until the motor stops. Do not stop moving the machine before the motor comes
to rest, as the tools could damage the surface.
To stop the machine:
1.Push the STOP button (15) .
2.Turn the ON/OFF (10) switch in position OFF, this will cut the voltage to the invertor and the green light will turn off.
Figure 4.9

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5. TOOLS AND ACCESSORIES
Tool holder key
The tool holder key (Fig. 5.1) is used for adjusting, mounting and dismounting of
the foam plates. Always use the key for mounting.
Item number is A03.00.00.00
Security plate for Quickchange pads
Plate (Fig.5.2) used to ensure the “Quickchange” tools.
Item number is A63.00.01
Security plate for RING TOOLS
Plate (Fig.5.3) used to ensure the “Ring” tools.
Item number is A85.00.00
Figure 5.1
Figure 5.2
Figure 5.3

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6. POPULAR TOOLS
The heads have counter-clockwise / left rotation. Use the blue PCDs and Carbide
Scrapers
RECOMMENDED TOOLS
QuickChange System and Tooling feature extremely fast and convenient
tool changes, and a long tool life, providing for great long‐term cost savings.
The QuickChange pads are produced in four different bonds for super hard,
hard, medium and soft concrete, in a variety of grit sizes. They are offered
with 1 or 2 buttons or rectangular segments, which allows you to
customize the aggressiveness of the cut.
CORSA HYBRID DISCS WITH QUICK CHANGE ATTACHMENT (WET OR DRY) : The new Corsa hybrid
discs are designed for scratch removal and transitioning from metal to resin tools, and are similar
to Calibra but the ceramic bond has been modified for more efficient use on soft and medium
concrete.
NATO® WITH QUICK CHANGE ATTACHMENT
Superabrasive's Nato resin pucks are a great tool choice for soft and hard concrete polishing
applications. Among the thickest diamond pads on the market - featuring a thick 12mm layer of
resin and diamonds for extra long life. Wide channels and a unique patented design allow for
work on a cleaner surface, ensuring a quality polish. Offered in wet and dry bond.
V‐HARR®Premium Polishing Pads for 9-inch TOOL HOLDERS
NOW AVAILABLE IN A QUICK CHANGE STYLE - NO FOAM PLATES NEEDED
V-Harr felt diamond pads are one of Superabrasive’s most versatile and successful diamond
tools for concrete polishing. V-Harr pads are also ideal for polishing terrazzo and hard stone
floors. V-Harr polishing pads should be used DRY on concrete! However, they will produce
remarkable gloss results on black granite when used wet.
Hybrid and resin tool rings
Exceptional flexibility with a thick layer of flexible foam.
Quick and easy magnetic attachment directly to the grinding heads.
Offered in 9” and 13” – compatible with lavina grinders and trowels
Use Only Superabrasive’s Recommended Tools. For More Tooling Options, Visit www.superabrasive.com

Superabrasive User Manual Original Language Lavina®25EB 1/2021
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7. MAINTENANCE AND INSPECTION
CLEANING
Keep your machine clean. Cleaning the machine on a regular basis will help detect and solve potential problems before they can cause
damage to the machine. Most importantly, check and clean the tool plate connections, power cords, plugs, vacuum hoses, and water
tank.
CHECK DAILY
After operating the Lavina 25EB machine, the operator should conduct a visual inspection of the
machine. Any defect should be solved immediately. Pay attention to power cords, plugs, vacuum
hoses, loose bolts or screws.
Tool holders: Buffers and elastic element are consumables and must be visually checked on a daily
basis and replaced if necessary. Make sure the flanges or discs are securely locked in place. The key
lock holders (butterflies) should also be checked.
Check the rubber buffers and make sure the holders are secure. The flange holding the buffers
(Fig.7.1‐1) has to be firmly secured to the unit. If there is a gap seen here, that means the screws
securing the holder are loose. The screws have to be tightened immediately to safely operate the
machine. Working with loose screws could cause serious damage to the machine. The tightening force
of the screws has to be 22‐25N.m (16‐18ft∙lbf).
It is very important to regularly check the screws that secure the “QuickChange” holder to the Figure
7.1 safety part (Fig.7.1‐ 2), so that the holder will not fly away if the buffers get damaged. The
“QuickChange” should also be cleaned.
.
CHECK EVERY 200 WORKING HOURS
Every 200 working hours, the operator should inspect all parts of the machine
carefully. Most importantly, inspect and clean the tool plate connections, power
cord plugs, vacuum hoses and water tank/filter.
Check the guard assembly. Ensure the wheels are clean and rotate properly. Inspect the
control
buttons. If there are defective control parts, they should be replaced immediately.
Replace any worn vacuum or water hoses.
Open the service cover on the motor base (Fig 7.2) (Fig 7.3) to check the
planetary chain. Lubricate the chain with chain lubricant and correct the sag if
needed. (For sagging correction see TROUBLESHOOTING 8.4)
Dismount the tool holders (See TROUBLESHOOTING) and replace any parts
(elastic element, buffers, sealer caps, “O” rings) showing any damage.
CHECK EVERY 400 WORKING HOURS
In addition to checks made every 200 working hours, replace sealer and V‐rings as described in chapter “TROUBLESHOOTING ‐
DISMOUNTING TOOL HOLDERS TO CHANGING V‐RINGS AND FELT‐RINGS.
VACUUM
As stated previously, frequently check hoses and othe r parts for clogging.
WATER LEAKS
Replace any leaking parts immediately as the water could damage your machine
.
MECHANICAL PARTS
Parts such as the belts, seal rings, cap rings, spiders and buffers and guard assembly are subject to wear and should be replaced
as needed.
Figure 7.1
Figure 7.2
Figure 7.3

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8. TROUBLESHOOTING
INDEX OF PROBLEMS AND SOLUTIONS
8.1 SEPARATING THE HEAD FROM THE CARRIAGE
1. Unscrew the four bolts to remove the panel fig. 8.2-1.
2. Disconnect the flexible hose supplying water under the cover of the machine fig. 8.2-2.
3. Disconnect the cable of lamp and remove the lamp fig. 8.2-3.
4. Unscrew the four bolts to remove the cover fig. 8.2-4.
5. Disconnect the engine cable from the power box fig. 8.2-5.
6. Release the clamp and remove the suction hose from the head fig. 8.2-6.
7. Make sure everything is disconnected fig. 8.2-7
OPERATION
INTERVAL
Daily
Every 200
Hrs.
Every 400
Hrs.
Inspect power cords, plugs and vacuum hoses, loose bolt or
screws.
X
Check the rubber buffers, elastic element and fixing of the
holders
X
Inspect and clean the tool plate connections
X
Inspect and clean water tank
X
X
Inspect the seal rings and bearings of the grinding units
X
Check the planetary chain and lubricate
X
X
Replace Felt-Ring and V‐rings
X
Check belts and bearings
X
Figure 71Figure 71
Figure 8.1

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Figure 8.2
8. For separating the carriage from the head you need to be two people –one to hold the carriage while the other
removes the pins fig 8.2-8. After the pins are removed the person which is holding the carriage should carefully place it
on the ground without harming it fig. 8.1.

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8.2 DISMOUNTING/MOUNTING THE GUARD
You can dismount and mount the safe guard
without separating the carriage from the
main head. Put the machine in position to
change the tools. Unscrew the four bolts M5
from the metal cover preventing the safe
guard to fall. Dismount one of the three
holders. Dismount the safe guard.
8.3 REPLACING POWER CORD AND PLUGS
When replacing the power cord or plugs, always
use cords and plugs with the same specifications as the original ones. Do not use lower quality or different types of cords or
plugs.
In addition, consider the distance between the appliance and the electrical source. The greater the distance, the greater the resistance and
the less current that will be available at the other end. This will cause a voltage drop and the inverter will switch into alarm mode. This will
also happen if several machines are working on the same line or the generator is not rated for the power needed. In general, our standard
power cable can be doubled in length; longer lengths require replacing all the cables with cables of a larger gauge rate to account for the
length and amperage.
8.4 DISMOUNTING AND MOUNTING TOOL HOLDER TO CHANGING V-RINGS AND FELT-RINGS
To check or replace the buffers and the elastic elements, the tool holders have to be dismounted.
You will need a 13mm deep metric socket with an outside diameter of no more than 3/4in to unscrew the four bolts (Fig.8.4.1) and remove
the holder (Fig.8.4.2). When the tool holder is dismounted, you can change the sealers (V‐Ring and Felt‐Ring).
By loosening four Hex cap flange bolts (Fig.8.4.3) the adaptor comes loose. Unscrew the six screws of the cap (Fig.8.4.4) holding the felt‐
ring. Take out the Felt‐Ring, adaptor and V‐Ring.
Mount the V‐Ring with the smallest lip of the V to the inside (Fig.8.4.5) ‐ simply push the V‐Ring so the top is on the same level as the
pulley top (Fig.8.2.6). Then take the adaptor and push the V‐Ring down with the adaptor (Fig.8.4.7). The lowest lip of the V‐Ring should only
barely touch its gliding surface. Mount the adaptor and the Felt‐Ring on top (Fig.8.4.7). Close the sealers with the cap (Fig.8.4.8) and screw
the bolts. Always use the original bolts. Do not push the V‐ring down with fingers.
Figure 8.4.1
Figure 8.4.2
Figure 8.4.3
Figure 8.4.4
Figure 8.4.5
Figure 8.4.6
Figure 8.4.7
Figure 8.4.8
Figure 8.3
Figure 8.4

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8.5 DISASSEMBLING AND MOUNTING TOOL HOLDER TO CHANGE BUFFERS AND ELASTIC ELEMENT
When the TOOL HOLDER is
disassembled you can change
defective parts –elastic element,
buffers, etc.
Lift the locking pin (Fig.8.5.1) to
dismount the retaining washer
(Fig.8.5.2). Take out the screws on
the buffers and the nuts of the
elastic element (Fig.8.5.3;Fig.8.5.4).
Remove the elastic element from
the QC plate (Fig.8.5.5). While the
holder is dismounted
(Fig.8.5.6;Fig.8.5.7), clean the parts
and replace any defective ones with
new ones. Assemble the holder
with new buffers, new screws, and
new elastic element. Replace the
retaining washer (Fig.8.5.8) and
push the locking pin (Fig.8.5.9). This
will prevent the washer from falling
while mounting the holder on the
machine.
Make sure the four bolts holding
the adaptor (Fig.8.5.12) are
reliably tighten. Mount the
holder on the machine using the
same socket as mentioned in 8.2
(Fig.8.5.10;Fig.8.5.11). The
retaining washer fits into the central hole C
of adaptor and the four bolts into the thread holes
Т (Fig.8.5.12). The holder is centered on the outside
diameter of the adaptor. Ensure the holder is
properly connected to the plate of the adaptor and
then tight evenly the four bolts.Tightening force of
the bolts has to be 22...25N.m(16...18 ft/lbs).
Mounting the holder without retaining washer
(Fig.8.5.2) is INADMISSIBLE because the security
system preventing the separation of part of the
holder in case of broken buffers and elastic element
will not function!You can change the butterfly of the
holder without dismounting the holder of the machine.
You can change the butterfly of the holder without
dismounting the holder of the machine. Fig.8.5.13 is a 3‐
D section view of the holder, showing its parts. The
numbering is the same as in Spare parts.
Figure 8.5.10
Figure 8.5.11
T
C
Figure 8.5.12
Figure 8.5.13
Figure 8.5.5
Figure 8.5.1
Figure 8.5.2
Figure 8.5.7
Figure 8.5.3
Figure 8.5.4
Figure 8.5.8
Figure 8.5.9
Figure 8.5.6

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8.6 CORRECTING DEFLECTION OF THE USED PLANETARY CHAIN
Unscrew the bolts and take out the cover (Fig.8.6.1). Lift the machine in position to change the tools. Turn manually the holders in
order to turn the main head, stop when you see through the window the chain tensioner (Fig.8.6.2).
Loosen a quarter to 1/2 rev the
two bolts of the chain tensioner
(Fig.8.6.3) the tensioner should
turn with minimum clearence,
without inclination, then
unscrew the inner nut. To
tension the chain screw the
outer nut (Fig.8.6.4). The tensioner of the planetary chain should allow chain sagging 3...5mm/1/8...3/16 in/ controlled in span X
(Fig.8.6.5). When ready screw the two nuts (Fig.8.6.4) and the screw(Fig.8.6.3).
ATTENTION: NEVER “OVER” TENSION THE CHAIN, THE CHAIN WILL BE DAMAGED
MOUNTING NEW PLANETARY CHAIN
The planetary chain is replaced with new one when the step/drive of the chain tensioner is finished or there is a break in the
integrity of the chain. Unscrew the bolts (Fig.8.6.1) and take out the cover. Lift the machine in position to change the tools.
Turn manually the holders in order to turn the main head, stop when you see through the window the chain tensioner
(Fig.8.6.2). Separate the carriage from main head, point 8.4 , pull out motor plug, water tubes and vacuum tubes. Take off handle
(without water tubes). Release the pin sets which attach the head to the carriage. Take off the service window (Fig. 8.6.1) so you
can dismount the top cover
Loosen the two nuts(Fig.8.6.4) and uscrew the two screws of the
tensioner (Fig.8.6.8)(Fig.8.6.9)(Fig.8.6.10). Take the chain
tensioner(Fig.8.6.11). Pull out the split pin (Fig.8.6.12) and the
chain link pin (Fig.8.9.8) (Fig.8.6.13). Take the chain, and put on
the same way the new chain, get in the chain link pin and the split
pin (Fig.8.6.13) (Fig.8.6.12) (Fig.8.6.11).
Figure 8.6.2
Figure 8.6.1
Figure 8.6.3
Figure 8.6.4
Figure 8.6.5
Figure 8.6.1