Superabrasive LAVINA 38GR -S User manual

Superabrasive Owner’s Manual – Lavina® 38GR-S 1/2013
1
LAVINA®38GR -S User Manual
Tech Support Line: 800-987-8403 | www.superabrasive.com | [e-mail]

Superabrasive Owner’s Manual – Lavina® 38GR-S 1/2013
2
TABLE OF CONTENTS
TableofContents.....................................................................................2
1.GENERALINFORMATION......................................................................3
Manufacturer...........................................................................................3
GeneralDescription.................................................................................3
Machinecharacteristics...........................................................................3
Lavina®38GR‐SMaindesign.....................................................................3
EnvironmentalConditions........................................................................4
VacuumConnection.................................................................................4
TechnicalData..........................................................................................4
Vibrations.................................................................................................4
SonorousEmissions.................................................................................4
LabelData................................................................................................4
CustomerService.....................................................................................4
2.SAFETYISTRUCTIONS............................................................................5
RecommendedUse..................................................................................5
ProhibitedUse.........................................................................................5
Preparationforwork................................................................................5
ProtectionDevices...........................................................................5
ArrestFunctions.......................................................................................5
SafeUse...................................................................................................5
PROPANESAFETY.....................................................................................5
FIRESAFETY..............................................................................................5
Emissions.................................................................................................5
HazardCommunication............................................................................5
LocalAgenciesand...................................................................................6
regulations...............................................................................................6
ResidualRisks...........................................................................................6
BeforeYouBegin......................................................................................6
OperatingMachine..................................................................................6
AfterWorkiscompleted..........................................................................7
TheWorkArea.........................................................................................7
PERSONALPROTECTIVEEquipment(ppe)................................................7
Testing.....................................................................................................7
Operator..................................................................................................7
Propanecylinders....................................................................................7
REFUELLINGCylinders..............................................................................8
StorageCylinders.....................................................................................8
TransportingCylinders.............................................................................8
3.HANDLINGANDTRANSPORTATION.....................................................8
Positioningthehandle.............................................................................8
USINGTHESTEERINGBRACKET................................................................9
Flippingthemachineup...........................................................................9
Lifting.....................................................................................................10
Thirdwheel............................................................................................10
RELEASINGINGTHEWHEELSOFTHECARRIAGE....................................10
Storage...................................................................................................10
4.OPERATION.........................................................................................11
PreliminaryControls..............................................................................11
Controlofthewaterflow........................................................................11
AdjustingandMountingTools...............................................................11
FRAMEBLOCKING(u‐joint)....................................................................11
RemoteCONTROLPANEL.......................................................................11
LocalCONTROLPANEL...........................................................................12
INDICATIONUNITSONTHEELECTRICALCABINET..................................13
StartingtheMachine..............................................................................13
OperatingtheMachine..........................................................................13
StoppingtheMachine............................................................................14
Alarm.....................................................................................................14
5.TOOLSANDACCESSORIES...................................................................14
Toolholderkey......................................................................................14
FoamPlate.............................................................................................14
SecurityplateforQuickchangepads......................................................14
6.POPULARTOOLS................................................................................15
7.EXPLODEDVIEW.................................................................................16
GeneralExplodedView(fig.7.1)............................................................16
TOOLHOLDERFORMACHINESExplodedView(fig.7.2)........................16
TopCOVERASSEMBLYandMOTORSUPPORTExplodedView(fig.7.3).16
PLANETARYDRIVEExplodedView(fig.7.4)...........................................16
BOTTOMCOVERASSEMBLYExplodedView(fig.7.5).............................17
TRANSMISSIONBELT ExplodedView(fig.7.6).......................................17
PULLEYUNITExplodedView(fig.7.7)....................................................17
CENTRALSHAFTBEARINGExplodedView(fig.7.8)................................17
TopCoverExplodedView(fig.7.9).........................................................18
ToolHolderExplodedView(fig.7.10).....................................................18
CarriageExplodedView(fig.7.11)...........................................................18
STEERINGBRACKETExplodedView(fig.7.12).........................................18
8.MAINTENANCEANDINSPECTION.......................................................19
REMARK.................................................................................................19
Cleaning..................................................................................................19
CheckDaily.............................................................................................19
Checkandreplaceafterthefirst8WorkingHours.................................20
Alwaysuse30HDor10W30engineoilwithallofthefollowingratings:
SF,SG,andCC.........................................................................................20
CheckandreplaceEvery50WorkingHours...........................................20
CheckEvery200WorkingHours............................................................20
CheckEvery400WorkingHours............................................................20
CheckEvery1000WorkingHours..........................................................20
Vacuum..................................................................................................20
WaterLeaks............................................................................................20
ElectricalSystem....................................................................................20
MechanicalParts....................................................................................20
CARRIAGEWHEELS.................................................................................21
BATTERYOFTHEDRIVING......................................................................21
BaterryofthePANEL..............................................................................21
Lavina®38GR‐SElectricalsYstem...........................................................22
9.TROUBLESHOOTING...........................................................................28
IndexofProblemsandSolutions............................................................28
9.1ENGINE.............................................................................................28
9.2CHECKINGANDCHANGINGOIL........................................................28
9.3separatingtheHeaDFROMtheCARRIAGE.......................................28
...............................................................................................................29
9.4dismounting/mountingtheengine...................................................30
9.5Replacingtheclutch.........................................................................30
9.6DISMOUNTINGANDMOUNTINGTOOLHOLDERsTOCHANGE
BUFFERSANDSPIDERs,CHANGINGV‐RINGSANDFELT‐RINGS..............31
9.7TensioningusedplanetaryBelt........................................................32
9.8Mountingandtensioninganewplanetarybelt................................33
9.9tensioningandreplacingthemotorsupportbelts...........................33
9.10tensioningandreplacingtheTRANSMISSIONBELT........................36
9.11replacingthePULLEYS....................................................................36
9.12replacingthewheel........................................................................37
9.13replacingtheBATTERY....................................................................37
9.14replacingtheWatertank................................................................37
...............................................................................................................37
10.WARRANTYANDRETURNS...............................................................41
ReturnPolicyforLavina®38GR‐S............................................................41
11.DISPOSAL..........................................................................................41
12.MANUFACTURER’SCONTACTS.........................................................41
13.SPAREPARTS....................................................................................42
13.1.LAVINA®38GR‐SGeneralParts....................................................42
13.2.LAVINA®38GR‐STOOLHOLDERFORMACHINESParts................42
13.3.LAVINA®38GR‐STopCOVERASSEMBLYandMOTORSUPPORTParts
...............................................................................................................42
13.4.LAVINA®38GR‐SPLANETARYDRIVEParts.................................43
13.5.LAVINA®38GR‐SBOTTOMCOVERASSEMBLYParts....................43
13.6.LAVINA®38GR‐STRANSMISSIONBELT Parts............................44
13.7.LAVINA®38GR‐SPULLEYUNITParts...........................................44
13.8.LAVINA®38GR‐SCENTRALSHAFTBEARINGParts....................44
13.10LAVINA®38GR‐SEngineBaseParts.............................................45
13.11.LAVINA®38GR‐SCarriageParts.................................................46
13.12.LAVINA®38GR‐SSTEERINGBRACKETParts...............................47
13.13LAVINA®38GR‐SToolHolderParts..............................................47
13.14LAVINA®38GR‐SEngineparts......................................................48
13.15LAVINA®38GR‐STankassemblyparts......................................48
LAVINA®38GR‐SControlBoxParts.......................................................49

Superabrasive Owner’s Manual – Lavina® 38GR-S 1/2013
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1. GENERAL INFORMATION
This owner’s manual is intended for the operator of the Lavina®38GR-S 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®38GR-S floor grinding and polishing machine.
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.
GENERAL DESCRIPTION
The Lavina®38GR-S machine is intended for grinding, polishing and buffing concrete, marble, granite, limestone and
terrazzo surfaces with diamond tools.
The Lavina®38GR-S is a three-disc machine with remote control, and can be used dry as well as wet.
For best results, use only tools manufactured or recommended by Superabrasive and its distributors.
WARNING!
The Lavina®38GR-S machine is manufactured and fitted for the above-mentioned applications only! Every other use
may possess risks to the persons involved.
MACHINE CHARACTERISTICS
The Lavina®38GR-S is made of two main
component sections:
LAVINA®38GR-S MAIN DESIGN
The two main component sections, the carriage
and main head.
The wheels of the carriage are driven by two gear
boxes that allow working with the machine from
distance. The handle on the frame is adjustable in
height and enables the operator to work in a correct and safe posture.
Two halogen spotlights (Fig.1.2) enable the operator to work in darker areas. The lamp holder can be adjusted in
different positions.
Existing lighting system does not replace adequate overhead lighting.
A frame (U-joint technology) on top of the motor base is providing the main head a possible to move to all
sides and it gives more grinding capacity.
Remote Control Unit (fig.1.3)
The control panel for local operations (fig.1.4) is positioned on top of the frame and contains switching devices,
which ensure the proper functioning of the engine, LPG supply turning on/off of the electromagnetic connector/clutch.
electrical box (fig.1.1) contains the electric switching devices and inverters. There are two plugs on the top side of the
box. The left (the small one) includes the control circuits of the engine, the generator and the gas valve. The main
feeding cable is connected with a plug and socket on the right side of the box. The baterry is situated under the
elecrtrical box.
Figure 1.2
Figure 1.3
Figure 1.1
Figure 1.4

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
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The water tank is on the opposite side of the frame, so that the weight of the water has no influence on the operation of
the machine. The water from the tank is supplied by a pump. The frame weight, on the other hand, is fully absorbed by
the driving wheels.
The propane tank is placed on a tank holder on the backside of the frame.
The Engine Kawasaki FX921V with electric clutch is mounted on the base plate and it is driving the three heads with a
belt system.
The planetary head is driven by a flat belt.
The machine has a third wheel which ensures easier movement. (Fig.1.1)
ENVIRONMENTAL CONDITIONS
The temperature range for operating the Lavina®38GR-S outdoors is between 41°F and 86°F or 5°C and 30°C. Never
use the Lavina®38GR-S during rain or snow when working outdoors. When working indoors, always operate the
machine in well-ventilated areas.
VACUUM CONNECTION
A connection for a vacuum dust extractor is located on the carriage. The Lavina®38GR-S does not include a vacuum
dust extractor. The customer must purchase the vacuum dust extractor separately. The hose of the vacuum extractor
must be Ø 76 mm/3 Inch and can be glided over the three-way pipe. The vacuum dust extractor must be adapted for
floor grinders and have a minimum air displacement of 500m3/h with a negative vacuum of 21 kPa.
TECHNICAL DATA
VIBRATIONS
The vibrations of the machine are within the limits of directives and harmonized standards from the European Union
when the Lavina®38GR-S 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®38GR-S 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, kW and RPM (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.
LAVINA® 38GR-S
Engine Kawasaki FX921V
Capacity of engine 999cc 61.0cu.in
Power 23.1 kW 31 HP
Tool holder rpm 416-750 rpm
Engine rpm 2000-3600 rpm
Working width 965.2 mm 38”
Tool holder diameter 3 x 335 mm 3 x 13.2”
Weight 632 kg 1393 lbs
Grinding pressure 260; 320; 350 kg 573;705; 771 lbs
Application wet and dry
Vacuum hose port 76 mm 3”
Water attachment Quick change for ¾” hose
Water tank capacity 46 l 12 gal
Propane tank capacity 15.2 kg 33.5 lbs
Water feed Peripheral and front stream with pump
Third wheel yes
AMG Battery 12V/35AH
Remote control battery Rechargeable battery size AA 1.2V
Machine LxWxH 2800x1000x1350 mm 110.2”x39.4”x53.1”
Packing LxWxH 1565x1100x1680 mm 61.6”x43.3”x66.1”

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
5
2.SAFETY ISTRUCTIONS
RECOMMENDED USE
The Lavina®38GR-S machine is designed and
manufactured to grind and polish concrete, terrazzo and
natural stone floors. It can be used for renovations 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 not-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.
In nursing homes, hospitals, day-care centers, etc
In areas where loose tiles or other objects are preventing
proper use of the machine.
In rooms without proper ventilation
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.
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. On contrary,
before using the machine, please ensure that all
protection devices are mounted and function properly.
ARREST FUNCTIONS
Functions of arresting of the
machine are following:
Switch to stop the engine
Button to stop the grinding movement
Close the propane tank
SAFE USE
The Lavina®38GR-S is designed to eliminate all risks
correlated with its use. However, it is not possible to
eliminate the risks of an eventual accident with the
machine. Unskilled or uninstructed operator may cause
correlated residual risks. Such risks are:
Position Risks due to operator’s incorrect working
position
Tangling up Risks due to wearing inappropriate
working clothes
Training Risks due to lack of operational training
NOTE: In order to reduce all consequences of the above-
mentioned risks, we advise that machine operators will
follow the instructions in the manual at all times.
PROPANE SAFETY
Propane is a flammable gas whose vapors are
heavier than air. As is the case with gasoline, propane can
explode if the proper cautions are not heeded. Propane is
odorized with an agent having a distinct odor that is
recognizable at very low concentrations. This helps in
identifying leaks, even when they are small.
Awareness and basic safety precautions are
required when working with propane. As long as these
precautions are followed, risk is negligible. Ignorance,
however, could pose needless risk.
The two greatest hazards with propane powered
floor care machines are:
- Carbon Monoxide Poisoning: This is the most
frequently reported incident associated with propane
powered floor care machines and is caused by excessive
exhaust emissions. The symptoms are headache,
dizziness and nausea. A major cause involves engines
with poor preventive maintenance practices, usually those
with dirty air filters and machines operated in confined
areas without adequate ventilation. Another cause may be
substandard, inexpensive machines with no emissions
control technology and improperly set carburetion.
- Overfilled Fuel Cylinders: Nearly all fire related
incidents reported result from bringing a cylinder into a
building without first checking for overfill. This action is
dangerous, unwise, and unnecessary.
FIRE SAFETY
Be aware of the potential dangers of fire or
explosion when using propane, and take normal fire-safety
precautions.
Fire: There is a possibility of fire from LPG vapor leaking
or venting from fuel cylinders or carburetion equipment.
Explosion: LPG vapor concentrated or confined to a
small, restricted space may explode or ignite.
Propane may experience a BLEVE, a boiling liquid
expanding vapor explosion.
EMISSIONS
All propane powered floor care machines produce
emissions. Most are harmless, but some are dangerous
and can be fatal. Carbon monoxide (CO) poses the
greatest risk, since CO can be lethal within as little as 30
minutes exposure at 3,000 parts per million (ppm)
concentration.
Carbon monoxide is an invisible, odorless,
colorless gas created when fossil fuels (such as gasoline,
wood, coal, propane, oil and methane) burn incompletely.
HAZARD COMMUNICATION
A Material Safety Data Sheet for propane
shall be posted in all buildings where propane
will be used.

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
6
Because propane is odorized, it is easily detected at
levels of just a few parts per million, which is much less
than the exposure limit of 1000 parts per million.
If you smell propane while operating a propane floor
care machine, do the following:
Stop the engine:
1. Pull the throttle to the stop position (if present) or
turn the key switch to the off position.
2. Shut off the service valve on the propane
cylinder.
3. Move the floor machine to a well-ventilated area.
4. Remove the cylinder from the machine and take it
outside the building.
5. If the cylinder is leaking, contact a DOT approved
repair shop to determine the cause of the leak
and have the shop, not you, repair it.
If a fire occurs while the machine is being operated,
do the following:
1. Stop the engine: pull the throttle to the stop
position (if present) or turn the key switch to the
off position.
2. Shut off the service valve on the propane cylinder
if possible. Be careful not to be burned.
3. Move the machine outside if possible. If not
possible, move it to a well-ventilated area away
from flammable materials.
4. Do not attempt to extinguish the flame from a gas
leak. If you do, the gas will build up in the area
and could re-ignite. Starve the fire by shutting off
the supply of gas.
5. Have the machine and cylinder inspected before
using them again.
LOCAL AGENCIES AND
REGULATIONS
NFPA
Operating a propane powered floor care machine
requires compliance with certain safety regulations. The
National Fire Protection Agency (NFPA) Standard for
Storage and Handling of LP Gas is the appropriate
authority for safe propane use. A copy of this publication
is available through the NPFA in Quincy, MA (1-800-334-
3555).
Among its regulations, NFPA #58 requires that all
personnel employed in the handling of propane gas be
trained in its proper handling and operating procedures. It
also requires them to carry a written certification from
their employer or training supervisor to attest to such
training. Although this is directed mainly to those who fill
and transport liquid propane gas, Onyx Environmental
Solutions recommends that operators of propane
powered floor care machines in public places be trained
and certified as well.
With regard to operation of propane powered floor care
equipment, even though NFPA 58 8-4.5 says “these
machines shall be permitted to be used in buildings
frequented by the public, including the times when such
buildings are occupied by the public,” Onyx
Environmental Solutions suggests usage when
occupancy of a given work area is minimal.
CARB / EPA
The California Air Resource Board (CARB) and
Environmental Protection Agency (EPA) also set limits for
propane-powered engines used outdoors, but CARB/EPA
approval does not signify that the engine is safe to use
indoors.
CGA
The Canadian Gas Association (CGA) has set a limit of
1500 ppm CO in exhaust flow.
OSHA
For propane powered machines used indoors, the
Occupational Health and Safety Administration (OSHA)
has established a limit of 50 ppm CO for 8-hour time
weighted average (TWA) in ambient air and is considering
a limit of 800 ppm CO in exhaust flow.
DOT
The Department of Transportation (DOT) has established
regulations regarding the safety of fuel cylinders including
the ones used on propane powered floor care machines.
Local Agencies
Local law enforcement agencies such as the local Fire
Marshall also rely on independent testing labs such as UL
and CGA before giving their approval of the use of some
equipment. These labs thoroughly test equipment and
submit their stamp of approval only after rigorous testing.
While not being required by all law enforcement agencies,
the stamp of approval by these agencies further assures
the operator that he or she is working with and around
safe equipment.
NOTE: In order to reduce all consequences of the above-
mentioned risks, we advise that machine operators will
follow the instructions in the manual at all times.
RESIDUAL RISKS
During the normal operating and maintenance cycles, the
operator is exposed to few 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 propane 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:
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
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
Never work with the machine
without visual contact with it.
Never run the machine when you are situated between the
handles of the wheel
When operating the Lavina®38GR-S, make certain that
there is no one, but you around the machine.

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
7
Never leave the machine unattended while working.
The water hose must move freely and must be damage-
free.
Check if the floor, you work on, is not too uneven. If this is
the case, it may damage the machine.
AFTER WORK IS COMPLETED
Clean the machine and its surroundings properly
Empty and clean the water tank
Store the machine in a safe place
Place the Propane bottle outside in its storage
THE WORK AREA
Make certain that people or vehicles do not enter the
work area.
Avoid cables and hoses being in the way.
Always check the floor for debris
PERSONAL PROTECTIVE
EQUIPMENT (PPE)
Always wear safety shoes 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.
Always wear Carbon Monoxide Indicator badges as an
extra precaution.
The plastic indicator contains a colored indicator button
that darkens in the presence of Carbon Monoxide. The
relative darkness of the indicator button indicates the
level of CO in the ambient atmosphere. Most indicator
badges have a useful life of 30 days, depending on the
concentration of contaminants, humidity, and
temperature.
TESTING
There are a great number of instruments offered
on the market to test for toxic gases. Only those designed
to read carbon monoxide resulting from combustion
engines is considered acceptable for testing exhaust
emissions from propane powered floor machines.
Some instruments are used to read “ambient air”
and may be damaged if used to take readings in the
muffler or tail pipe. Selecting the proper instrument is an
important part of meeting the testing requirements.
Generally speaking, units capable of reading in
ppm, (parts per million), at ranges from 0 to 1000 are
adequate for checking ambient air (air in the breathing
zone of the operator). Instruments capable of testing
carbon monoxide in the exhaust should be able to read
from 0 to at least 2000 ppm and should be certified by the
manufacturer for that purpose.
Some instruments and systems used for these
purposes are:
1) AMBIENT AIR MONITORING
DRAGER Model 190: Manufactured by National
Drager.
SENSIDYNE gas sampling system with YB-
11038 Sensidyne dectector tubes
DRAGER gas sampling system with YB-4620
Drager detective tubes
GAS-TECH Model CO-95
ENERAC POCKET 60: Manufactured by Energy
Efficiency System
2) ENGINE EXHUAST ANALYZERS
HORIBA GAS ANALYZER
ENERAC 2000 COMBUSTION ANALYZER
ENERAC POCKET 60
3) DATA LOGGERS
INDUSTRIAL SCIENTIFIC CORP. MODEL STX-70
CO MONITOR, Data-Logger
BIOSYSTEMS INC. “TEXILOG” Data-Logger
All instruments used for testing must be calibrated at
intervals recommended by the manufacturer. The
monitor, model number and date of calibration will be
recorded with all test results.
OPERATOR
The operator Lavina®38GR-S machine must have an
adequate technical knowledge and preparation.
The operator must know the machine’s work environment.
Only one operator at a time can work with the machine.
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 interpret all the
drawings and designs in manual.
The operator must know all sanitation and safety
regulations pertaining to the operation of
The operator must have floor grinding experience.
The operator must know what to do in case of emergency
The operator is expected to operate their equipment safely
and responsibly. They are responsible for the proper
handling and storage of propane cylinders, identifying
potential hazards associated with his job and avoiding
these hazards at all times.
PROPANE CYLINDERS
The Propane cylinders are constructed of either
aluminum or steel. We recommend aluminum because it
is lighter and guards against rusting. The cylinder used on
propane powered floor machines is classified as a 4E240
cylinder. Its rated capacity is 33.5 lbs. and this designation
refers to the model of the cylinder. Actual propane
capacity achieved during filling can be less than, equal to,
or slightly more than 33.5 lbs. Use only UL, CTC/DOT
listed cylinders.
The propane cylinder used on the floor machine is
a motor fuel cylinder as listed by the Department of
Transportation. Unlike the common 33.5-lb propane
outdoor grill cylinders (which are not legal for use on
propane floor machines), the motor fuel cylinder has a
number of safety systems designed into it to ensure your
safety at all times.
There are two types of 33.5 lb. motor fuel
cylinders.
Liquid draw
Vapor draw
The liquid draw cylinder is used on larger vehicles
like forklifts. These machines have special vaporizing
carburetors to allow the propane to change from a liquid to
a gas before being burned in the combustion chamber.

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
8
The vapor draw cylinder is used on small
machines like the propane powered floor care machines.
The vacuum generated by the engine draws up the
Propane gas vapor through the fuel system. The propane
powered floor care machine does not have an
evaporating system and will freeze up if liquid propane is
introduced to it. It is necessary that special attention be
paid to ensure that neither the liquid nor the vapor draw
cylinders be overfilled.
REFUELLING CYLINDERS
The proper filling of propane cylinders is a subject
so important that it warrants special attention. Propane
cylinders should only be filled by qualified propane
dealers.
Most important, propane cylinders should be filled
no more than 80% of their rated capacity. The other 20%
is called the vapor space or headspace. This vapor can
be compressed without causing the pressure relief valve
to open and vent gas to the area around the cylinder. If
there is no headspace to allow for fuel expansion, the
pressure relief valve will open, releasing propane gas into
the atmosphere. This is a very dangerous and volatile
situation as there is always the possibility that enough of
the vented gas could find its way down to the floor and
come in contact with a pilot light from a furnace, hot water
heater, or other source of ignition. Propane changes into
a gas, is -44º F (-42º C). Exposing unprotected skin to
propane gas or liquid could result in frostbite injury.
All new cylinders should be vented and purged of
air per manufacturer’s instructions before use. Never
bleed propane cylinders indoors.

STORAGE CYLINDERS
When not in use, propane cylinders always
should be stored outside in an upright position in a
secure, tamperproof, steel mesh storage cabinet. This
cabinet may be located next to the building but with at
least five feet (1.5 m) of space between the cabinet and
the nearest building opening (door or window), also away
from heat and direct sunlight.
Do not install the cabinet near a stairway or street
elevator as vented propane gas will seek a lower level
since it is heavier than air and could find its way into the
basement of the building. Do not store cylinders full or
empty inside a building or inside a vehicle. Although it is
unlikely that propane will vent from a stored cylinder, if it
should, the vapor could come in contact with an ignition
source such as a spark from a power tool or other
appliance and create a flash fire.
Do not smoke or use a device with an open flame
when handling or transporting propane cylinders.
TRANSPORTING CYLINDERS
When transporting cylinders to a propane dealer
or to a job, make sure the cylinders are securely fastened
and standing in an upright position with the service valve
closed.
A cylinder rattling around in the back of a vehicle
and banging into other objects constitutes a hazard. Avoid
dropping or banging cylinders against sharp objects.
The propane cylinders are sturdily constructed but
a series of hard jolts could cause damage.
Please note that any cylinder that has been filled
is always considered full, no matter how little propane gas
remains in it. This is because even when all liquid has
evaporated into vapor there is still some propane gas
vapor left in the cylinder. Because this remaining fuel is
flammable, an empty cylinder should be treated with the
same careful procedures as one that is filled to the 80%
level with liquid propane. The only time that a cylinder is
considered empty is when it is new, before it has been
filled with propane.
When transporting a propane powered floor
machine, the propane cylinder may be strapped onto the
machine as long as the machine itself is firmly secured in
the vehicle.
Of course, spare cylinders should always be secured in an
upright position
3. HANDLING AND TRANSPORTATION
POSITIONING THE HANDLE
Fi
g
ure 3.1 Fi
g
ure 3.2 Figure 3.3

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
9
USING THE STEERING BRACKET
By loosing the swivel bolt (Fig. 3.1-2), turn the steering bracket (Fig. 3.1-3) in position. To turn the steering bracket
down (Fig. 3.1-3) you have to turn loose the swivel bold (Fig. 3.1-2), and push it in, this for security reasons.
The handle can be positioned in three positions:
Transport position to store or to transport or to hoist the machine (fig. 3.4)
Working position (fig. 3.5) and Flipping position (fig. 3.6)
To change the handle positions pull the knob (Fig. 3.1-1, Fig. 3.7, and Fig. 3.8),
move the handle up or down.
To choose the transport-position pull the additional the security pin (Fig. 3.4, Fig. 3.9) out and put it back in when the
handle is in position. Never lift the machine on the handle without mounting this pin.
FLIPPING THE MACHINE UP
To change the tools put the handle in the flipping (upright) position (Fig. 3.10), grab the steering bracket and pull the
machine with all your bodyweight down (one foot on the control box can help) Put the bracket down on the floor (Fig.
3.11) and change tools. While putting the machine down a foot on the control box helps again.
Figure 3.4 Figure 3.6 Figure 3.5
Figure 3.11Figure 3.10
Figure 3.7 Figure 3.8 Figure 3.9

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
10
Figure 3.
13
Fi
g
ure 3.17
Figure 3.12
Fi
g
ure 3.18
LIFTING
Lifting the machine by crane is possible by using the hoisting
ring mounted on the carriage (see Fig.3.12). The eye bolt
and machine construction is rated only for the weight of the
machine. Do not lift any other loads on the machine. Use
always hoisting equipment rated for 800 kg or 1760 lbs. See
to it the security pin (Fig. 3.9) is mounted.
THIRD WHEEL
Lavina®38GR-S has a third wheel for easier movement.Lift
the operating part using the jack wheel and with the energy
of the baterry move the machine on its own power.
Mounting/Dismounting with Pin assembly (see Fig. 3.13 1-2). While working there is a possibility to turn the wheel
support 90º(Fig.3.13).Pull out the wheel support, turn it 90 º and fix again.
RELEASINGING THE WHEELS OF THE CARRIAGE
If on some reason the movement of the machine is not possible on its own power (using the third wheel), it can
be done on the two wheels of the carriage by the operator.
Each of the wheels can be released from gearing to the driven shaft by unscrewing the bolt (Fig.3.14-1) by 3 revs.
This way is released the saw-edged bush, which transmits the movement between the shaft and the wheel. To
unscrew the bolt you need a wrench 19mm (3/4 in) (Fig.3.15). When turning on/off the connector of the wheel is
good to lift the carriage so the wheel does not touch the floor and has free rotation (Fig.3.16).
STORAGE
Always store and transport the Lavina®38GR-S in a dry place. Never transport the Lavina®38GR-S unprotected; it may
be damaged if transported unprotected during rain or snow.
When during the storage of the machine the temperature may fall down to or less 32F (or 0oC) you should
empty the water from the system using following steps:
‐Pull out the hose of the tank (Fig.3.17) (Fig. 3.18 -3).
‐Включете помпата ипревключете крана(Fig. 3.18 -4) вдвете му положения, докато излезе водата от
маркучите..
‐Извадете двата маркуча
(Fig. 3.18 -1 и2) иповторете отново
предходната процедура. Закачете
отново всички маркучи.
Fi
g
ure 3.15Figure 3.14 Fi
g
ure 3.16

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
11
Figure 4.4
Fi
g
ure 4.3
4.OPERATION
PRELIMINARY CONTROLS
Inspect the working area as explained in the safety instructions. For wet use, fill in the water tank when the electrical
cable is disconnected. Connect the vacuum extractor and ensure that the vacuum hose is clear and it will follow the
machine easily. Plug in the machine and make sure that the power cord is free to follow the working direction of the
Lavina®38GR-S.
CONTROL OF THE WATERFLOW
The operator can choose
the water sprays with valve
(Fig.4.2 -1)in the front
(fig.4.1) when the level of
the tap is in the vertical
position , when the level is
in the horizontal position
water will spray under
cover of the machine.
The valve (Fig. 4.2 -2) is controlling the flow of an external water supply. The valve (Fig. 4.2 -4) should be closed for
external water supply, not to allow water leak to the tank. A ¾” water tube can be attached to the quick connection (Fig.
4.2 -3).
The flow regulating valve located on the tank (Fig.4.3) is increasing or reducing the waterflow to the working area – in
front of the machine or under the main head cover of the machine.
ADJUSTING AND MOUNTING TOOLS
Mount the tools only after ensuring that there is nough
diamond bond material left. Be sure that the plates are
always clean before mounting. WARNING: Secure always
the“Quickchange” pads with the security plate (Fig.4.3), lock
with the tool holder key (Fig.5.3). Diamond tools with Velcro
are attached on three foam plates of 13.2 inch (Fig.4.4). The
foam plates are mounted on the key lock (butterfly).Always
use the tool holder key (Fig.5.3).
FRAME BLOCKING (U-JOINT)
The relation between the working head and the trolley is the frame (U-joint), which
allows rotation about two perpendicular axes to better follow the profile of the floor.
The movement round one of axis can be blocked with two screws to the plank,
mounted on the front of the frame(Fig.4.5). Unscrew the bolts and turn the plank so it
fixes the frame to the carrier with its tooth and then tighten the bolts(Fig.4.6). Thus
the lateral movement of the machine is blocked.
REMOTE CONTROL PANEL
The Control Panel can work connected to the machine or as a remote control device.
Fi
g
ure 4.5
Figure 4.1 Figure 4.2 Figure 4.3

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
12
When it is connected to the machine it has to be on the support of the handle bar where on the bottom is mounted the
transmitter of the panel. Unscrew the protection closure of the panel (Fig.4.6), then unscrew the nut of the plug
connecting the cable to the transmitter and connect the plug to the panel (fig4.8.). Put the protection closure to the
transmitter (fig 4.9).
When the panel is working as a remote control device the cable should be connected to the transmitter.
1. Plug with closure used to connect the panel to the
machine through a cable
2. Emergency STOP button used in Emergency
situations for stopping the machine. Turn on/off the panel.
3. Switch Reset
- forward position activates the initial setting on the
control panel
- back position resets the alarm of the inverters
4. Start/Stop clutch Start will electronically activate the
grinding plates to spin, by pushing stop it will disconnect
engine from grinding heads
5. Switch on/off the spotlights
6. Joystick presets the moving direction of the machine
7. Free switch
8. Switch presets moving speed of the machine
9. LCD – Display :
- indication of the preset rotation speed of the working plates
- indication of the preset speed of the machine
- emergency stop button report
- report - "inverter fault"
- movement direction "forward"
- movement direction "back"
10. ON/OFF switch starts/stops the engine
11. ON/OFF switch control the water pump
LOCAL CONTROL PANEL
1. Remote/Local/Start Engine switch
In position "Remote" the machine is controlled by
REMOTE CONTROL PANEL.
In position "LOCAL" the REMOTE CONTROL PANEL
is not functioning and the machine is controlled by the LOCAL
CONTROL PANEL.
In this position the engine is in contact and it starts
after switching the switch to fully right position. After releasing
the switch returns to "LOCAL".
2. Water pump switch Lights orange when the water pump is
working.
3. Ready switch „ON/OFF”
In position “ON” after lighting the button
Figure 4.6 Figure 4.7 Figure 4.8 Figure 4.9
Fi
g
ure 4.10
Fi
g
ure 4.11

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
13
The machine is supplied by the battery and is ready to work.
In position “OFF” the supply of the machine is interrupted.
This is the position in which the machine should stay when the work is finished.
4. Digital RPM/workings hours indicator When the motor runs it indicates the revolutions per minute of the motor,
see the conversion table to know the rpm of the tools. When the motor does not run, it indicates the worked hours.
The hour meter will blink between 48-52 hours as a reminder for oil change.
5. Start/Stop clutch Start will electronically activate the grinding plates to spin, by pushing stop it will disconnect
engine from grinding heads
6. Emergency stop button used in Emergency situations for stopping the machione.
7. Throttle Push forward to accelerate.
INDICATION UNITS ON THE ELECTRICAL CABINET
1. Indicator lamp "BATTERY" for charging the battery.
Lights when starting the engine and then extincts. The lighting of the lamp during operation of the engine indicates
faults in the battery charging system. 2. Indicator lamp "FUEL" for LP Fuel Lockoff valve. Lights continuously
during operation.
STARTING THE MACHINE
NEVER WORK WITH THE MACHINE WITHOUT VISUAL CONTACT WITH IT.
ATTENTION: Never run the machine when you are situated between the handles of
the wheel. First turn the handles as shown on Fig.4.15.
If working wet, pour water on the floor. If working on dry surface, skip that step and
connect and switch on the vacuum cleaner.
First, follow the directions in chapter Safety Devices and "SAFETY
INSTRUCTOINS". Check oil level. Open (counterclockwise) the service valve on
the propane tank about one and a half turns. Turn the switch (Fig.4.11-1) on
position "Remote" and switch Ready on position "ON" and wait to light. Next, see
to it the Start/Stop clutch button (Fig.4.10-4) is in stop position check the throttle
(Fig.4.11-7) in the IDLE position. Check "emergency stop button" (Fig.4.11-6) to be
sure that the machine is in working condition.
To start the engine press " Motor on" (Fig.4.10-10), hold untill the engine starts and then release. Set the required speed
(Fig.4.10-8), push "Clutch ON" and with the joystick (Fig.4.10-6) chose the desired direction.
OPERATING THE MACHINE
Guide the machine in straight lines across the floor, and with each new line overlap a little bit of the previously
completed surface. 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 in one spot while the tools are still working because they will leave
marks on the floor surface. When working wet, preliminary chose with the water tap (Fig.4.2-1) the position for water
feed and periodically start the pump (Fig 4.10-11) to release water onto the floor surface. Starting the pump is possible
only if the machine motor is on. When working dry, check the floor surface periodically to ensure that dust is not
accumulating on it. Check regularly if your vacuum works properly. In case you need you may turn on the lights
(Fig.4.10-5).
Fi
g
ure 4.15
Fi
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ure 4.14

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
14
STOPPING THE MACHINE
The machine can stop by switching the joystick in opposite position to the moving direction.
The stopping of the machine should be after the motor stops. Do not stop moving the machine before stopping
the motor rotation. Otherwise it could damage the surface.
To stop the machine engine use switch "Motor off"(Fig.4.10-10). Use "Emergency stop button" only in
emergency.
NOTE! Do not hold the machine in one spot before the engine stops to turn.
ALARM
The machine stops when the emergency stop button is activated or the inverters are shut down by emergency.
It is indicated by flickering lamp inbuilt in the switch Ready „ON/OFF”
The control panel display shows " Emergency stop " or "Inverter fault". After eliminating the accident cause
the machine is reset in working condition by releasing the emergency stop or turning on the "Inverter reset"( Fig.4.10-3).
The lighting of the lamp "BATTERY" during operation of the engine indicates faults in the battery charging
system.
Extinction of the indicator lamp "FUEL" during operation or lack of light during the ignition to start the engine
indicates a faulty valve of incoming gas or low oil level in the engine.
5.TOOLS AND ACCESSORIES
TOOL HOLDER KEY
The tool holder key (Fig. 5.1) is used for adjusting, mounting and dismounting of the
tools. Always use the key for mounting. Item number is A03.00.00.00
FOAM PLATE
Diamond tools with Velcro are mounted on the foam plate (Fig.5.2). The foam plate is
mounted on the “QuickChange System” . Item number is LV-13.5-FP-S
SECURITY PLATE FOR QUICKCHANGE PADS
Plate (Fig.5.3) used to ensure the “Quickchange” pads.
Item number is A38.00.02
Figure 5.1
Fi
g
ure 5.3
Fi
g
ure 5.2

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
15
6. POPULAR TOOLS
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, with either 1 or 2 buttons, which
allows you to customize the aggressiveness of the cut.
Calibra grinding discs: our popular ceramic bond discs are designed for the removal
of difficult scratches and they save you valuable time by eliminating the need for
multiple passes with metal tools. They can be used wet or dry, and are best for hard
concrete applications. They are with Velcro attachment.
NATO®polishing discs feature a special resin formula designed for both wet and dry
applications and a unique design with wide channels allowing for work on a cleaner surface
and ensuring a quality polish. Available in 3 and 4 in sizes.They are with Velcro attachment.
V-HARR®Premium Polishing Pads are designed for mechanically polishing and
restoring concrete; also ideal for terrazzo and hard stone floors. V-HARR® pads are
offered in a wide variety of diameters and grit sizes to accommodate many applications.
Dry use is strongly recommended.
Shine Pro®are high quality diamond-impregnated pads for floor maintenance. Available in a
variety of sizes (17, 20, 21, 27 inch and other sizes), they are designed for use under swing
machines and burnishers, and are great for daily use – they require only water (no wax or
chemicals needed) and are a very environmentally friendly solution for maintaining floors.
Use only Superabrasive’s recommended tools see www.superabrasive.com

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
16
Fi
g
ure 7.2
Figure 7.3
Figure 7.4
7. EXPLODED VIEW
GENERALEXPLODEDVIEW(FIG.7.1)
TOOLHOLDERFORMACHINESEXPLODEDVIEW(FIG.7.2)
TOPCOVERASSEMBLYANDMOTORSUPPORTEXPLODEDVIEW(FIG.7.3)
PLANETARYDRIVEEXPLODEDVIEW(FIG.7.4)

Figure 7.1

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
17
Figure 7.5
Figure 7.7
Figure 7.8
BOTTOMCOVERASSEMBLYEXPLODEDVIEW(FIG.7.5)
TRANSMISSIONBELT EXPLODEDVIEW(FIG.7.6)
PULLEYUNITEXPLODEDVIEW(FIG.7.7)
CENTRALSHAFTBEARINGEXPLODEDVIEW(FIG.7.8)




































Figure 7.6

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
18
Figure 7.9
Figure 7.10
TOPCOVEREXPLODEDVIEW(FIG.7.9)
TOOLHOLDEREXPLODEDVIEW(FIG.7.10)
CARRIAGEEXPLODEDVIEW(FIG.7.11)
STEERINGBRACKETEXPLODEDVIEW(FIG.7.12)
Figure 7.11

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
19
Figure 7.12
8. MAINTENANCE AND INSPECTION
REMARK
Tampering w/Emission Control System Prohibited
Federal law and California State law prohibits the following acts or the causing thereof: (1) the removal or rendering
inoperative by any person other than far purposes of maintenance, repair, or replacement, of any device or element at
design incorporated into any new engine for the purpose of emission control prior to its sale or delivery to the ultimate
purchaser or while it is in use, or (2) the use of the engine after such device or element of design has been removed or
rendered inoperative by any person.
Among those acts presumed to constitute tampering, involve the parts/systems listed below:
Carburetor and internal parts
Spark plugs
Magneto or electronic ignition system
Fuel filter element
Air cleaner elements
Crankcase
Cylinder heads
Breather chamber and internal parts
Intake pipe and tube
CLEANING
Keep your machine clean. Cleaning the machine on a regular basis will help detect
and solve potential problems before they cause damage to the machine. Most
importantly, check and clean the tool plate connections, power cord and plugs,
vacuum hoses, water tank and the Propane installation.
CHECK DAILY
After operating the Lavina® 38GR-S, the operator should conduct a visual
inspection of the machine. Any defect should be solved immediately. Pay attention to
plugs and vacuum hoses loose bolt or screws.
Tool holders: Buffers and spiders are consumables and must be visually checked
daily and replaced if needed. The key lock holders (butterflies) on the tool holders
should be also checked.
Figure 8.1

Superabrasive Owner’s Manual Original Language – Lavina ®38GR-S 1/2013
20
Check the rubber buffers and fixing of the holders. The flange holding the buffers (Fig.8.1-1)has to be firmly
fixed to the unit. A gap seen there means that there are loose screws fixing the holder. The screws has to be
tightened immediately for safety operation.Working with loose screws on the holder could also cause bad damages
on the machine. Tightening force of the screws has to be 25...30N.m(18...22 ft/lbs).
It is very important to check regularly the screws(Fig.8.1 2),that fix the "Quickchange" holder to the safety part,
so that holder will not fly away if the buffers got damaged.
“Quickchange” should be clean. The tension of the planetary belt can be daily checked by moving the main
head and feeling the resistance of the moving pulleys, if the belt slips tighten if necessary, as described in the chapter
Troubleshooting .
CHECK AND REPLACE AFTER THE FIRST 8 WORKING HOURS
Replace the oil in the engine after the first 8 hours work, according to the instructions of the engine manufacturer.
ALWAYS USE 30HD OR 10W30 ENGINE OIL WITH ALL OF THE FOLLOWING RATINGS: SF, SG, AND CC
CHECK AND REPLACE EVERY 50 WORKING HOURS
Change engine oil, while changing check for leakage of engine oil at the various seals. The hour meter will blink
between 48-52 hours as a reminder/"Engine Oil Capacity" is 1.5L(1.6US.qt) when oil filter is not removed
;1.7L(1.8US.qt) when oil filter is removed/.
Recommended Oil Change Intervals
Do not exceed the 50-hour oil change interval. Oil changes more frequent than 25 hours will give even longer engine
life. In any case, always use 30HD or 10W30 engine oil with all of the following ratings: SF, SG, and CC. make sure the
oil level is maintained at the "FULL" level.
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, plugs, vacuum hoses and water tank and filter. Also, check the water flow of the pump.
Check the guard assembly. Make certain the wheels are clean and rotate properly. Inspect the control buttons. If there
are defective control parts, they should be replaced immediately. Replace worn vacuum- and water hoses.
Carefully inspect the seal rings and bearings of the grinding units, and replace any showing signs of excessive wear.
For more information, refer to chapter troubleshooting below. Open the top cover on the motor base to check of the
planetary driving belt, by moving the main head the belt should not slip on the planetary pulley and drive the pulleys.
Return machine to authorized service center for overall checkup of the Engine. For Propane safety, have the
machine serviced by a Certified Technician, including emission check.
CHECK EVERY 400 WORKING HOURS
Besides the checks of 200 working hours.
Remove the protective covers under the motor. Check the belt that moves the generator. If necessary tighten it
making sure not to “over tension”, never tighten it to the first given values. Replace it if necessary.
Return machine to authorized service center for overall checkup of the Engine. For Propane safety, have the
machine serviced by a Certified Technician, including emission check.
Return machine to authorized service center for overall checkup of the Engine. For Propane safety, have the
machine serviced by a Certified Technician, including emission check.
CHECK EVERY 1000 WORKING HOURS
Besides the checks of 400 working hours.
Dismount the tool holders and bottom cover assembly (See Troubleshooting). Check if the transmission belt and motor
support belts tension are in good condition, and change if needed.
VACUUM
As stated previously, frequently check hoses and other parts for clogging.
WATER LEAKS
Replace any leaking parts immediately as the water could damage your machine
ELECTRICAL SYSTEM
Dust should not enter the control box, as it will destroy the contacts. Remove (blow out) any dust present.
MECHANICAL PARTS
Parts such as the belt, seal rings, cap rings, spiders and buffers and guard assembly are subject to wear and should be
replaced as needed.