Superabrasive LAVINA 38GR -X User manual

Superabrasive Owner’s Manual – Lavina® 38GR-X 08/2017
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LAVINA®38GR -X User Manual
Tech Support Line: 800-987-8403 | www.superabrasive.com | [email protected]

Superabrasive Owner’s Manual –Lavina® 38GR-X 08/2017
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Superabrasive Owner’s Manual –Lavina® 38GR-X 08/2017
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WARRANTY AND RETURNS
WARRANTY POLICY FOR LAVINA®38GR-X
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 the first 90 days or 200 operating hours -
whichever occurs first. 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®38GR-X
The Lavina®38GRX 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 Owner’s Manual –Lavina® 38GR-X 08/2017
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TABLE OF CONTENTS
WARRANTY AND RETURNS ......................................................................3
Table of Contents.....................................................................................4
1. GENERAL INFORMATION......................................................................5
Manufacturer...........................................................................................5
General Description .................................................................................5
Machine characteristics ...........................................................................5
Lavina®38GR-X Main design..................................................................... 5
Environmental Conditions........................................................................6
Vacuum Connection................................................................................. 6
Technical Data.......................................................................................... 6
Vibrations.................................................................................................6
Sonorous Emissions..................................................................................6
Label Data ................................................................................................ 6
Customer Service .....................................................................................6
2.SAFETY INSTRUCTIONS..........................................................................7
Recommended Use..................................................................................7
Prohibited Use ......................................................................................... 7
Preparation for work................................................................................ 7
Protection Devices ...................................................................................7
Arrest Functions.......................................................................................7
Safe Use ................................................................................................... 7
PROPANE SAFETY ..................................................................................... 7
FIRE SAFETY..............................................................................................7
Emissions .................................................................................................7
Hazard Communication............................................................................ 7
Local Agencies and...................................................................................8
regulations ...............................................................................................8
Residual Risks...........................................................................................8
Before You Begin......................................................................................8
Operating Machine ..................................................................................8
After Work is completed ..........................................................................9
The Work Area ......................................................................................... 9
PERSONAL PROTECTIVE Equipment (ppe)................................................ 9
Always wear safety shoes when working with the machine. ...................9
TESTING ...................................................................................................9
Operator ..................................................................................................9
PROPANE CYLINDERS ...............................................................................9
REFUELLING CYLINDERS .........................................................................10
STORING CYLINDERS ..............................................................................10
Transporting Cylinders ...........................................................................10
3. HANDLING AND TRANSPORTATION ...................................................11
Positioning the handle ........................................................................... 11
USING THE STEERING BRACKET.............................................................. 11
Tipping the Machine Back ...................................................................... 12
Lifting .....................................................................................................12
Third wheel ............................................................................................12
RELEASING THE WHEELS OF THE CARRIAGE .......................................... 13
Storage................................................................................................... 13
4.OPERATION.........................................................................................14
Preliminary Controls .............................................................................. 14
Control of the water flow.......................................................................14
Adjusting and Mounting Tools ...............................................................14
Remote CONTROL PANEL....................................................................... 15
Local CONTROL PANEL ...........................................................................16
INDICATION UNITS ON THE ELECTRICAL CABINET.................................. 16
Starting the Machine.............................................................................. 17
Operating the Machine ..........................................................................17
Stopping the Machine............................................................................17
Alarm .....................................................................................................17
5.TOOLS AND ACCESSORIES ...................................................................18
Tool holder key ......................................................................................18
Foam Plate..............................................................................................18
Security plate for Quickchange pads ......................................................18
6. POPULAR TOOLS.................................................................................18
RECOMMENDED TOOLS .........................................................................19
Use only Superabrasive’s recommended tools. For more tooling options,
visit www.superabrasive.com ....................Error! Bookmark not defined.
7. MAINTENANCE AND INSPECTION.......................................................20
REMARK..................................................................................................20
Check Daily .............................................................................................20
Check and replace after the first 8 Working Hours.................................20
Check and replace Every 50 Working Hours...........................................20
Check Every 200 Working Hours.............................................................20
Check Every 400 Working Hours.............................................................21
Vacuum ..................................................................................................21
Water Leaks............................................................................................21
Electrical System.....................................................................................21
Mechanical Parts ....................................................................................21
CARRIAGE WHEELS.................................................................................21
PROPULSION BATTERY ...........................................................................21
PANEL BATTERY......................................................................................21
Lavina®38GR-X Electrical sYstem...........................................................22
8. TROUBLESHOOTING ...........................................................................28
Index of Problems and Solutions ............................................................28
8.1 ENGINE .............................................................................................28
8.2 CHECKING AND CHANGING OIL........................................................28
8.3 separating the HeaD FROM the CARRIAGE.......................................28
8.4 dismounting/mounting the engine...................................................29
8.5 Replacing the clutch .........................................................................30
8.6 DISMOUNTING TOOL HOLDERs TO CHANGE V-RINGS AND FELT-
RINGS .....................................................................................................31
8.10 tensioning and replacing the motor support belts .........................34
8.11 tensioning and replacing the TRANSMISSION BELT ........................37
8.12 replacing the PULLEYS ....................................................................38
8.13 Replacing the Planetary DRIVING Gear AND Planetary Tensioner.39
8.14 Replacing the Planetary driven Gear ..............................................39
8.15 replacing the wheel ........................................................................40
8.16 replacing the BATTERY....................................................................40
8.17 replacing the Water tank................................................................40
9. DISPOSAL............................................................................................43
10. MANUFACTURER’S CONTACTS .........................................................43
11. SPARE PARTS ....................................................................................44
11.1. LAVINA®38GR-X.............................................................................44
11.2. LAVINA®38GR-X TOOL HOLDER FOR MACHINES Parts................44
11.3. LAVINA®38GR-X Top COVER ASSEMBLY and MOTOR SUPPORT
Parts .......................................................................................................44
11.4. LAVINA®38GR-X PLANETARY DRIVE Parts .................................45
11.5. LAVINA®38GR-X BOTTOM COVER ASSEMBLY Parts ....................45
11.6. LAVINA®38GR-X TRANSMISSION BELT Parts ............................46
11.7. LAVINA®38GR-X PULLEY UNIT Parts............................................46
11.8 LAVINA®38GR-X Driving Pulley Unit parts –................................47
11.8 LAVINA®38GR-X Driving Pulley Unit parts...................................47
11.9. LAVINA®38GR-X CENTRAL SHAFT BEARING Parts ........................48
11.11 LAVINA® 38GR-X Engine Base Parts .............................................49
11.12. LAVINA®38GR-X Carriage Parts..................................................51
11.13. LAVINA®38GR-X STEERING BRACKET Parts ...............................52
11.14 LAVINA®38GR-X Tool Holder Parts .............................................53
11.15 LAVINA® 38GR-X Engine parts .....................................................53
11.16 LAVINA® 38GR-X Tank assembly parts ......................................54
12. Lavina® 38GR-X Control Box Parts ..................................................55
LAVINA®38GR-X Control Box Parts ......................................................56
13. Emission Control Warranty Statement .............................................57

Superabrasive Owner’s Manual – Lavina® 38GR-X 08/2017
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1. GENERAL INFORMATION
This owner’s manual is intended for the operator of the Lavina®38GR-X machine, the servicing technician as well as
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-X 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-X machine is intended for grinding, polishing and buffing concrete, marble, granite, limestone and
terrazzo surfaces with diamond tools.
The Lavina®38GR-X is a three-disc machine with remote control designed for wet and dry use.
For best results, use only tools manufactured or recommended by Superabrasive and its distributors.
WARNING!
The Lavina®38GR-X 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-X is made of two main
component sections:
LAVINA®38GR-X MAIN DESIGN
The two main component sections are the
carriage and the main head.
The wheels of the carriage are driven by two gear
boxes that allow the operator to work with the
machine from a distance. The handle on the frame is
adjustable in height and enables the operator to work in a correct, safe
posture.
Two halogen spotlights (Fig.1.2) enable the operator to work in darker areas. The lamp holder is fully adjustable.
Lighting system does not replace adequate overhead lighting.
A frame (U-joint technology) on top of the motor base enables the main head to move in any direction and
increases its 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 switches that allow the
operator to start/stop the engine, apply the electromagnetic clutch, and navigate the machine.
The electrical box (fig.1.1) contains the electrical switches and inverters. There are two plugs on the top side of the
box. The left (smaller) 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 battery is situated under the electrical box.
Figure 1.2
Figure 1.1
Figure 1.3
Figure 1.1
Figure 1.4

Superabrasive Owner’s Manual Original Language –Lavina ®38GR-X 08/2017
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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 drives the three heads with a
belt system.
The planetary head is driven by a duplex roller chain.
The machine has a third wheel which ensures easier movement. (Fig.1.1)
ENVIRONMENTAL CONDITIONS
The temperature range for operating the Lavina®38GR-X outdoors is between 41°F and 86°F or 5°C and 30°C. Never
use the Lavina®38GR-X 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-X 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 fitted 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-X 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-X is operated with the recommended tools and in normal conditions. However, 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-X
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
610 kg
1346 lbs
Grinding pressure
267; 332; 358 kg
590;733; 790 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 crate LxWxH
1650x1100x1720 mm
65”x43.3”x67.7”

Superabrasive Owner’s Manual Original Language –Lavina ®38GR-X 08/2017
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2.SAFETY INSTRUCTIONS
RECOMMENDED USE
The Lavina®38GR-X 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 apart 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 off 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 the
contrary, before using the machine, please ensure that all
protection devices are mounted and function properly.
ARREST FUNCTIONS
Functions to arrest the machine
include the following:
Switch to stop the engine
Button to stop the grinding movement
Close the propane tank
SAFE USE
The Lavina®38GR-X 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 - Related Risks due to operator’s
incorrect working position
Risks of Entanglement due to wearing inappropriate
working clothes
Training-related 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-X 08/2017
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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, perform the repair.
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 whilst situated between the
handles of the wheel
When operating the Lavina®38GR-X, make certain that
there is no one but you around the machine.

Superabrasive Owner’s Manual Original Language –Lavina ®38GR-X 08/2017
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Never leave the machine unattended while working.
The water hose must move freely and must be damage-
free.
Ensure that 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 of the Lavina®38GR-X 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 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 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.
The vapor draw cylinder is used on small
machines like the propane powered floor care machines.

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10
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 at -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.
STORING 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 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.

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3. HANDLING AND TRANSPORTATION
POSITIONING THE HANDLE
USING THE STEERING BRACKET
By loosening the swivel bolt (Fig. 3.1-2), one can turn the steering bracket (Fig. 3.1-3) to a new position. To turn the
steering bracket down (Fig. 3.3) you have to loosen the swivel bolt (Fig. 3.1-2) and push it in, 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) and
move the handle up or down.
To choose the transport-position pull the additional security pin (Fig. 3.4, Fig. 3.9) out and replace it when the handle is
in position. Never lift the machine by the handle without installing this pin.
Figure 3.1
Figure 3.2
Figure 3.3
Figure 3.7
Figure 3.8
Figure 3.9
Figure 3.4
Figure 3.5
Figure 3.6

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Figure 3.13
Figure 3.12
TIPPING THE MACHINE BACK
To change the tools, put the handle in the flipping (upright) position (Fig. 3.10), grab the steering bracket and pull the
machine down using all bodyweight (one foot on the control box can help). Put the bracket down on the floor (Fig. 3.11)
and change tools. One foot on the control box can help again while putting the machine down.
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. Always
use hoisting equipment rated for 800 kg or 1760 lbs. Ensure the
security pin (Fig. 3.9) is installed before lifting.
THIRD WHEEL
Lavina®38GR-X has a third wheel for easier movement. Lift the
operating part using the jack wheel and with the energy of the
battery move the machine on its own power.
Mounting /Dismounting with Pin assembly (see Fig. 3.13 1-2). While working, it is possible to turn the wheel support 90º
(Fig.3.13).Pull out the wheel support, turn it 90º and fix again.
Figure 3.11
Figure 3.10

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13
Figure 3.18
Figure 3.17
RELEASING THE WHEELS OF THE CARRIAGE
If for some reason the movement of the machine is not possible on its own power (using the third wheel), it can
be moved by the operator on the two wheels of the carriage.
Each of the wheels can be released from its gearing to the drive shaft by unscrewing the bolt (Fig.3.14-1) by 3 revs.
The saw blade bushing, which transmits the movement between the shaft and the wheel, is released this way. To
unscrew the bolt a 19mm (3/4 in) wrench is needed (Fig.3.15). When engaging or disengaging the hub of the wheel,
lift the carriage so the wheel does not touch the floor and is free to rotate (Fig.3.16).
STORAGE
Always store and transport the Lavina®38GR-X in a dry place. Never transport the Lavina®38GR-X unprotected; it may
be damaged if transported unprotected during rain or snow.
When the temperature may fall to 32F (0oC) or less during the storage of the machine, water should be
emptied from the system using the following steps:
-Pull out the hose of the tank (Fig.3.17) (Fig. 3.18 -3).
-Turn on the pump and shift the tap (Fig. 3.18 -4) in the two positions until the water drains from the hoses.
-Pull out the two hoses
(Fig. 3.18 -1 and 2) and repeat the
above steps. Then reattach all hoses.
Figure 3.15
Figure 3.14
Figure 3.16

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14
Figure 4.5
Figure 4.4
4.OPERATION
PRELIMINARY CONTROLS
Inspect the working area as explained in the safety instructions. For wet use, fill the water tank with the electrical cable
disconnected. Connect the vacuum extractor and ensure that the vacuum hose is clear and able to 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-X.
CONTROL OF THE WATER FLOW
The operator can choose
where the water sprays
with the red lever (Fig. 4.2-
1). When the lever is
perpendicular to the valve,
water sprays in front of the
machine (Fig 4.1). When
the lever is parallel to the
valve, water sprays under
the cover of the machine.
One valve (Fig. 4.2-2) controls the flow from an external water supply, which can be connected via a 3/4" water tube at
the quick connection (Fig. 4.2-3). The other valve (Fig. 4.2-4) should be closed to the external water supply to prevent
water leaking into the tank.
The flow regulating valve located on the tank (Fig. 4.3) can increase or reduce the water flow 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 enough
diamond bond material left. Be sure that the plates are
always clean before mounting. WARNING: Always secure
the“Quickchange” pads with the security plate (Fig.4.4), lock
with the tool holder key (Fig.5.3). Diamond tools with Velcro
are attached on three foam plates of 13.2 inch (Fig.4.5). The
foam plates are mounted on the key lock (butterfly). Always
use the tool holder key (Fig.5.3).
Figure 4.1
Figure 4.2
Figure 4.3

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REMOTE CONTROL PANEL
The Control Panel can work connected to the machine or as a remote control device.
When connected to the machine, it should rest on the plate below which the transmitter is mounted. To connect the
device, screw the protective cover from the plug on the remote control panel (Fig. 4.6), then unscrew the nut of the plug
connecting the cable to the transmitter and connect the plug to the panel (Fig. 4.8). Use the protective cover to replace
the plug on 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; stop 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
rpm
engine
rpm
tools
2000
420
2100
440
2200
460
2300
480
2400
500
2500
520
2600
540
2700
563
2800
585
2900
605
3000
625
3100
645
3200
670
3300
690
3400
710
3500
730
3600
750
Figure 4.5
Figure 4.6
Figure 4.7
Figure 4.8
Figure 4.9
Figure 4.10

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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 a warning signal sounds.The
machine is powered by the battery and is ready to work.
In position “OFF” the supply of the machine is interrupted and the
warning sound signal stops.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 is not running, it indicates the worked hours.
The hour meter will blink between 48-52 hours as a reminder for an oil change.
5. Start/Stop clutch Start will electronically activate the grinding plates to spin; stop will disconnect engine from
grinding heads
6. Emergency stop button used in Emergency situations for stopping the machine.
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.
Figure 4.11
Figure 4.14

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STARTING THE MACHINE
NEVER WORK WITH THE MACHINE WITHOUT VISUAL CONTACT WITH IT.
ATTENTION: Never run the machine when situated between the handles of the
wheel. Turn the handles as shown in Fig.4.15 before starting.
If working wet, wet the floor surface. If working dry, instead connect and start the
vacuum cleaner.
First, follow the directions listed in "Safety Devices and 'SAFETY
INSTRUCTIONS'". Check oil level. Open the service valve on the propane tank
about one and a half turns (counterclockwise). Turn the switch (Fig.4.11-1) to
"Remote" and switch Ready to "ON" and wait to light - there will be a warning
sound signal. Next, ensure that the Start/Stop clutch button (Fig.4.10-4) is in stop
position. Check that the throttle (Fig.4.11-7) is in the IDLE position. Check the
"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 until the engine starts, then release - the warning sound signal
should stop. Set the required speed (Fig.4.10-8), push "Clutch ON" and choose the desired direction with the joystick
(Fig.4.10-6).
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. 4.2-1) and periodically run 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 for dust accumulation. Check regularly to see if your vacuum works properly. If
needed, lights may be turned on via the switch on the remote control panel (Fig.4.10-5).
STOPPING THE MACHINE
The machine can be stopped by moving the joystick opposite the moving direction.
To prevent damage to the floor surface, do not stop the machine before stopping the motor. The motor should
have completed stopped rotating before stopping the machine.
To stop the machine engine, use the "Motor off" switch. Only use the "Emergency Stop" button in case of
emergency.
This will activate the buzzer with the warning sound signal announcing the battery mode.
At this stage, turn the Ready switch (Fig. 4.11-3) to the "OFF" position to stop the power supply to the machine.
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 built into the Ready "ON/OFF” switch
The control panel display will show " Emergency stop " or "Inverter fault". After eliminating the cause of the
accident, the machine can be reset to working condition by releasing the emergency stop or turning on the "Inverter
reset"( Fig.4.10-3).
The lighting of the "BATTERY" lamp during operation of the engine indicates faults in the battery charging
system.
Extinction of the "FUEL" indicator lamp 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.
Figure 4.15

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18
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 secure the “Quickchange” pads.
Item number is A38.00.02
Figure 5.1
Figure 5.3
Figure 5.2

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19
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. They are offered with 1 or 2 buttons
or rectangular segments, 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 3‐inch, with included
Velcro back 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‐integrated pads for floor maintenance.
Available in a variety of sizes, they are great for daily use. When used wet, they
require only water (no wax or chemicals needed), making them a very
environmentally‐friendly solution for maintaining floors.
Use Only Superabrasive’s Recommended Tools. For More Tooling Options, Visit www.superabrasive.com

Superabrasive Owner’s Manual Original Language –Lavina ®38GR-X 08/2017
20
7. 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 for 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-X, 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 also
be checked.
Check the rubber buffers and fixing of the holders. The flange holding the buffers (Fig.7.1-1) has to be firmly
fixed to the unit. A gap seen there means that there are loose screws fixing the holder. The screws have to be tightened
immediately for safe operation. Working with loose screws on the holder could also cause bad damages to the
machine. Tightening force of the screws has to be 25...30N.m(18...22 ft/lbs).
It is very important to regularly check 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 get damaged.
“Quickchange” should be clean.
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. Clean, lube, and tension the chain at this point as well.
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 service cover on the motor base Figure 9.7.2
to check of the planetary chain. Lubricate the chain with special lubricant for chains and correct the sag if needed.
Figure 7.1