OPERATION MANUAL
ASPHALT AND CONCRETE CUTTERS
RZ113, RZ123
(version 01/2017)
NTC STAVEBNÍ TECHNIKA spol. s r.o.
Jiřinková 120, 552 03 Česká Skalice
Czech Republic
Tel.: +420 491 452 184 fax: +420 491 401 609
E-mail: ntc@ntc.cz www.ntc.cz
Asphalt and concrete cutters Operation manual
page 2 issued 01/2017
ES/EU PROHLÁŠENÍ O SHODĚ (originál)
EC/EU Declaration of Conformity (original)
Prohlašujeme, že zařízení definované níže uvedenými údaji je ve shodě s požadavky níže uvedených NV a směrnic
We declare that the trough below mentioned specifications defined equipment complies with requirements of below cited Directives
Výrobce (manufacturer): NTC STAVEBNÍ TECHNIKA spol. s r.o.
Sídlo firmy (company domicile): Jiřinková 120, Česká Skalice 552 03
IČ (identification number): 63221152
Osoba pověřená sestavením a NTC STAVEBNÍ TECHNIKA spol. s r.o.
uchováváním technické dokumentace:
(Person in charge of assembling
and storing technical documentation)
Název (model): ŘEZAČ SPÁR / FLOOR SAW
Typ (type): RZ113, RZ123
Výrobní číslo (serial number)
Popis (description): Řezače spár jsou určeny pro řezání spár do asfaltových a betonových povrchů, např. při opravách
vozovek, průmyslových ploch apod. Pohon řezače spár je zajištěn čtyřdobým jednoválcovým motorem
HONDA(čistý výkon GX160 - 3,6 kW / GX200 - 4,1 kW),
Floor saws are designed for cutting of joints in asphalt or concrete surfaces, i.e. at repairs of roads,
industrial areas, etc. The machine is driven with four-stroke single-cylinder engine HONDA, (net power
GX160 - 3,6kW / GX200 - 4,1kW),
Všechna příslušná ustanovení, Strojní zařízení – směrnice 2006/42/ES; NV č.176/2008 Sb.
která výrobek splňuje Machinery Directive 2006/42/EC
(The product meets all relevent provisions) Emise hluku – směrnice 2000/14/ES; NV č.9/2002 Sb.
Noise Emission 2000/14/EC
Elektromagnetická kompatibilita – směrnice 2014/30/EU; NV č.117/2016 Sb.
Electromagnetic Compatibility Directive 2014/30/EU
Harmonizované technické normy a ČSN EN ISO 12100, ČSN EN 13862+A1
technické normy: EN ISO 14982:2009
(The harmonized technical standards
and technical standards)
Naměřená hladina akustického výkonu: L
WA
= 107, 105 dB
(Measured sound power level)
Garantovaná hladina akustického výkonu: L
WAG
= 111, 109 dB
(Guaranteed sound power level)
Poznámka: Veškeré předpisy byly použity ve znění jejich změn a doplňků platných v době vydání tohoto prohlášení bez jejich citování.
Note: All regulations were applied in wording of later amendments and modifications valid at the time of this declaration issue without any citation of them.
Místo a datum vydání: Osoba zmocněná k podpisu za výrobce:
Place and date of issue: Signed by the person entitled do deal in the name of producer:
Česká Skalice, 06.04.2016
Jméno (Name): Funkce (Grade) Podpis (signature)
Ing. Petr Ratsam jednatel společnosti (Company Executive)
Asphalt and concrete cutters Operation manual
page 3 issued 01/2017
Congratulations! You have purchased an asphalt and concrete cutter NTC. You receive highquality and powerful machine, intended for professional use under the heaviest conditions.
Read carefully this operation manual before starting the machine and always keep the instruction this way you will secure safe operation, high working output and long durability of the machine.
The manufacturer bears no responsibility for damages arising from not keeping the operation
manual.
This machine was manufactured by NTC STAVEBNÍ TECHNIKA spol. s r.o.
Address: Jiřinková 120
552 03 Česká Skalice
Czech Republic
Phone: +420 491 452 184, fax: +420 491 401 609
E-mail: ntc@ntc.cz
NTC STAVEBNÍ TECHNIKA spol. s r.o. is a light construction equipment manufacturer with a longterm experience. NTC machines are exported to many European countries, among others to Spain,
Netherlands, Italy, Hungary, Romania and Russia.
NTC has certified quality control system according to ISO 9001:2008.
All manufactured models undergo testing, measuring and consideration of safety risks; all machines
conform to safety standards and bear the CE mark.
CONTENT:
1. SAFETY INSTRUCTIONS ........................................................................................................................... 5
1.1. GENERAL INSTRUCTIONS FOR OPERATION OF LIGHT CONSTRUCTION EQUIPMENT .............................................. 5
1.1.1. Requirements for qualification of the operator ....................................................................................... 5
1.1.2. Contractor's obligations .......................................................................................................................... 5
1.1.3. Operator's obligations ............................................................................................................................. 5
1.1.4. Operation of the machine ........................................................................................................................ 6
1.1.5. Maintenance and Service................................................................................................ ......................... 6
1.1.6. Transport and Storage ............................................................................................................................. 6
1.2. PROHIBITED ACTIVITIES ..................................................................................................................................... 7
1.3. HYGIENIC PRINCIPLES ........................................................................................................................................ 7
1.4. ENVIRONMENTAL PRINCIPLES............................................................................................................................ 7
1.5. LIQUIDATION OF THE MACHINE .......................................................................................................................... 8
1.6. SAFETY INSTRUCTIONS...................................................................................................................................... 8
1.7. HYGIENIC DATA................................................................................................................................................. 8
1.8. LIST OF SAFETY MARKS USED ON THE MACHINE .............................................................................. 9
2. TECHNICAL DESCRIPTION ................................................................................................................... 10
2.1. BASIC TECHNICAL DATA: ................................................................................................................................ 11
2.2. LUBRICANTS ................................................................................................................................................... 11
2.3. IDENTIFICATION .............................................................................................................................................. 12
2.4. ENGINE IDENTIFICATION.................................................................................................................................. 12
3. PRIOR TO STARTING ............................................................................................................................... 12
3.1. CHECK - OIL LEVEL ......................................................................................................................................... 12
3.2. VISUAL INSPECTION OF THE MACHINE ............................................................................................................ 13
3.3. ADDING FUEL .................................................................................................................................................. 13
3.4. CHECK - AIR FILTER ........................................................................................................................................ 13
3.5 OVERTURNING MACHINE ........................................................................................................................ 13
4. OPERATION ................................................................................................................................................ 14
4.1. STARTING ........................................................................................................................................................ 14
Asphalt and concrete cutters Operation manual
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4.1.1. Gasoline Engines HONDA .................................................................................................................... 14
4.2. OPERATION ..................................................................................................................................................... 14
4.2.1. Selection of the Cutting Disc ................................................................................................................. 14
4.2.2. Fastening of the Cutting Disc ................................................................................................................ 15
4.2.3. Cutting ................................................................................................................................................... 15
4.2.4. Cutting Depth Scale ............................................................................................................................... 15
4.3. ENGINE TURNING-OFF .................................................................................................................................... 15
4.4. HANDLING, TRANSPORT, STORING .................................................................................................................. 16
4.4.1. Manual Handling................................................................................................................................... 16
4.4.2. Handling by Crane ................................................................................................................................ 16
4.4.3. Handling by Forklift .............................................................................................................................. 16
4.4.4. Transport ............................................................................................................................................... 16
4.4.5. Storing ................................................................................................................................................... 16
4.5. SPECIAL CONDITIONS OF OPERATION .............................................................................................................. 16
4.5.1. Work at Low Temperatures.................................................................................................................... 16
4.5.2. Work at High Altitudes .......................................................................................................................... 16
4.5.3. Work in Dusty Environment ................................................................................................................... 16
5. MAINTENANCE ......................................................................................................................................... 17
5.1. MAINTENANCE OF THE ENGINE ....................................................................................................................... 17
5.2. TENSIONING OF THE DRIVE BELTS .................................................................................................................. 17
5.3. INSPECTION OF BOLTED CONNECTIONS ........................................................................................................... 17
5.4. ADJUSTMENT OF ENGINE SPEED ...................................................................................................................... 17
6. MAINTENANCE SCHEDULE ................................................................................................................... 18
7. WARRANTY CONDITIONS ..................................................................................................................... 22
Revision
Content
Date
1 2 3
Asphalt and concrete cutters Operation manual
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1. SAFETY INSTRUCTIONS
1.1. General instructions for operation of light construction equipment
1.1.1. Requirements for qualification of the operator
1. The machine must be operated by
trained reliable operators of age above
18. The operator must read and
understand the safety instructions, the
regulations valid for the respective
jobsite and valid technological
procedure. This should be proved by
getting the operator’s signature.
2. The operator is obliged to use suitable
working dress, safety gloves and firm boots
with hard tip. Do not wear loose or torn
clothes, chains or jewelry that could be
caught by moving parts of the machine. The
operator is obliged to use safety goggles and
ear protection.
3. The machine may be used for intended
purpose only, in accordance with this
operation manual.
1.1.2. Contractor's obligations
The contractor is understood to be a physical or
legal person that carries out construction works
and for such purpose uses construction
equipment. The contractor is responsible for
operational safety.
The contractor is obliged to:
designate the operator and arrange his
training
ensure safe working conditions
inspect attendance of the safety
regulations
inspect that the operator works with the
machine in accordance with the Operation
Manual
ensure regular inspections, maintenance
and repairs of the machine
store the Operation Manual so that it is
readily available
arrange suitable, safe and adequate
storing of the machine when not in use
The contractor is also responsible for proper
attendance of lawful regulations of work safety
and regulations valid for each respective jobsite.
1.1.3. Operator's obligations
The operator is to be designated by the
contractor, while keeping conditions of the
article 1.1.1.
The operator is namely obliged to:
prior to starting, he should read and
understand the Operation Manual
including the safety instructions
attend all instructions of the Operation
Manual
learn about the jobsite and the locally
valid safety regulations; these must be
kept during the work
pay full attention to operation of the
machine
arrange that regular inspections,
maintenance and repairs of the machine
are carried our as according to the
Operation Manual
require from the contractor proper
conditions for keeping safety instructions,
regular inspections, maintenance and
repairs
avoid damage, misuse or unauthorized use
to the machine, namely by proper storing
the machine to a secured place
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1.1.4. Operation of the machine
Before starting:
1. Check the machine thoroughly, repair all
failures before starting the engine. If the
failures cannot be repaired at the jobsite, do
not operate the machine.
2. Check the fuel system for leaking. Dripping
fuel poses fire hazard.
Starting and operation:
3. When starting the engine, take stable
position and held the grip firmly.
4. The controls must be in good order.
5. The operator must not leave from his
position when the engine is running.
6. Stop the engine before interrupting the
work. When parking the machine, secure it
from falling.
7. Stop the engine before refueling. Avoid
contact between fuel and hot parts of the
engine. Let the engine to cool down first.
8. Keep the fuel tank tightly closed. Close the
fuel tap when not in operation. Drain the
fuel before transporting the machine for
longer distances.
DANGER! Leaking fuel tank and distribution
may cause explosion. Replace these parts
immediately if damaged.
Jobsite:
9. No bystanders are allowed within the
operational range of the machine. Especially
children should be kept in safe distance.
10. Do not operate the machine in areas with
explosion danger.
11. If operated in closed spaces (halls, tunnels),
there should be ensured sufficient
ventilation.
12. Held and guide the machine with high care
in order to avoid hands injury caused with
contact with an obstacle.
14. Do not smoke, do not use naked flame. Do
not work close to flammables or in
explosion danger areas.
15. Avoid touching hot parts. The exhaust
silencer and other parts of the engine are
very hot during operation and touching them
can cause serious burns.
1.1.5. Maintenance and Service
1. Check the technical condition of the
machine regularly, mainly the protective and
operation parts. Arrange any possible
defects repair.
2. Only qualified personnel is allowed to do
service works.
3. Service works should be done only in
workshops, where ecological rules and work
safety are ensured. If machine needs to be
serviced at the job site, make sure not to
collide with other machines or equipment. It
is prohibited to service the machine at places
where ecology, work safety could be
endangered, for example by other equipment
operation, landslide, etc.
4. Service works can be done only when the
engine is switched off. If it is necessary to
start the engine, pay attention.
5. Use only genuine spare parts.
6. Any modifications can be done only with
manufacturer prior approval.
1.1.6. Transport and Storage
1. Machine can be transported only by
wehicles and equipments with
corresponding capacity.
2. When using a crane corresponding
safety rules must be applied. To be done
only by authorized personel.
3. Use the lifting point marked at the
machine.
4. When loading by hand cooperation of
more people is needed, pay attention to
max. allowed carrying capacity of a
worker.
5. Secure the machine to prevent damage
or overturning.
6. Machine must be transported in upward
position.
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1.2. Prohibited activities
Never:
use the machine for other than intended
purposes
use the machine in other way than as
described in the Operation Manual
operate the machine drunk or intoxicated
operated the machine if its operation
could cause harm to other people
start and operate the machine if there are
other people within the dangerous area
operate the machine if some safety device
(i.e. cover) is damaged or missing
operate the machine in areas with external
risks (risk of soil flow, dangerous fumes,
risk of explosion, risk of electrical shock,
etc.)
operate the machine in areas where its
operation may cause damage to buildings,
structures or utility lines
operate the machine within the protective
range of power lines or transformer
stations
operate the machine under poor visibility
or at night, unless the jobsite is
sufficiently illuminated
leave unprotected machine
disable or modify safety devices,
protective and safety systems
operate the machine with leaking oil, fuel
or other liquids
start the engine in other way than
described in the Operation Manual
clean a running machine
smoke or use naked flame when refueling
1.3. Hygienic principles
Oil derivates (fuel, lubricants) as well as paints
and thinners are harmful agents. Anyone who
gets into contact with such agents is obliged to
protect himself and follow general principles
health protection as well as to follow
instructions valid for each specific agent.
Pay special care to:
skin care
wash hands properly after finishing the
work and apply suitable cream
Store the fuels, lubricants, paints, thinners,
cleansing and conservation agents, as well as
other dangerous agents in original containers,
properly sealed. Never allow storing in
unmarked bottles or containers or even in
beverage bottles. Store such agents in safe place,
out of reach of children.
In case that the agent gets into touch with skin
or eyes, or when it is eaten or inhaled, apply the
first aid and get immediately medical aid.
1.4. Environmental principles
Fuel, lubricants and other operational fluids are
harmful to environment. This category also
includes part of the machine that get into contact
with operational fluids, such as filter and
hydraulic hoses.
After use these belong to dangerous waste.
Pay high attention to avoid leakage of the fluids
and their escape into soil or water (including the
sewage).
Store the fluids in such manner, that the fluids
gets caught in case of accidental leakage.
If these agents still escape, arrange their safe
collection and liquidation.
Asphalt and concrete cutters Operation manual
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1.5. Liquidation of the machine
After the machine exceeds its lifetime period,
the contractor is obliged to arrange its proper
liquidation in accordance with the respective
lawful regulations and with regards to
environmental protection.
- Metal parts must be disposed only by
authorized companies.
- Used oil must be disposed only by
authorized companies.
NTC bears no responsibility for any damages
caused by breaking above mentioned hygienical
and ecological rules.
1.6. Safety Instructions
Besides of general safety instruction, the
following special instruction must be followed:
1. Prior to starting the work, find out where are
underground spaces, utility lines, etc.
2. Never remove the blade cover when the
engine is running.
3. After stopping the engine, wait till the blade
gets fully halted.
4. After fitting the cutting blade, pace on the
cover and secure it.
5. Be sure to remove the wrenches from the
blade shaft!
6. Do no allow other people close to running
machine.
7. DANGER!
The cutting blade is always turning as soon
as the engine is started. The revolving blade
presents a risk of injury!
1.7. Hygienic data
RZ 113
RZ 123
Declared noise emission level at the operator L
pAd
[dB]
(Measured according to EN ISO 11201: 2010 and EN 13862 + A1, Annex A
idling)
94
91
Guaranteed sound power level L
WA,G
[dB]
(As measured by NV no. 9/2002 Coll., Annex no. 3, section B, paragraph 31,
respectively, in accordance with Directive 2000/14 / EC, Annex III, Part B,
item 30 and EN ISO 3744: 2010)
107+4
105+4
Acceleration transferred to hands a
hvd
[m.sec-2]
(Measured according to EN 13862 + A1, Annex F under load and EN ISO
20643)
19,3+7,72
17,72+7,09
Information for users of above mentioned machinery, requested by directives: 2003/10/ES – exposure of
operators to noise and 2002/44/ES – exposure of operators to vibrations (czech equivalent NV no.
272/2011 Sb.):
With regard to declared acoustic pressure value A at working place of the operator and to declared
aggregate value of hand-arm vibrations transferred to the operator it is necessary to use protective
equipment effective against above mentioned noise value and hand-arm vibrations when operating the
particular type of the floor saws and further it is necessary to modify the working processes because of
setting technological breaks due to reduce the exposure of the operator to the hand-arm vibrations.
Exposure can be mutually proportional to the mass operator.
ATTENTION!
The noise emission measurements obtained in accordance with the European standards do not necessarily
correspond with varying levels of noise produced under process
real conditions of use. Measurements are made when the machine is running on empty - no load.
In case of casting machines suitable blade can also cut dry. Due to an increased incidence of dust, but in
this case you must use protective equipment for respiratory protection (respirator).
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1.8. List of safety marks used on the machine
In accordance to requirements of law no 22/1997 Sb. About technical requirements on products in valid version,
there are stickers of safety marks and informative symbols placed on the machines (types – see point 2.1). Types of
the stickers are explained further, explanation is attached to each symbol.
1.
Combined stickers of safety symbols according to ČSN
ISO 3864 (symbol no. B.2.5, B.3.1 and NB. 2.26), symbol
according to CS ISO 6405-1 (symbol no, 7.28) and
information for operating the machine.
Safety symbol no. B.2.5 orders the operator to use ear
protection.
Symbol no. 7.28 orders the operator to read the manual
prior to starting the operation.
Safety mark, symbol no. NB.2.26 orders the operator to
use protective gloves during the operation to reduce
vibrations.
Safety mark, symbol no. B.3.1 (exclamation mark) warns
the operator from the danger risk.
Information for the operator regarding repair, cleaning or
adjusting the machine.
2.
Symbol no. 7.23 according to CSN ISO 6405-01 (sticker
shows spots which should be greased according to
operation manual)
3.
Symbol no. 8.1 according to CSN ISO 6405-01 (sticker
show spot where engine oil drain bolt is located)
4.
Safety symbol no. B.3.1(exclamation mark) warns the
operator from danger risk.
Symbol shows blade and the shoe, which means: PAY
ATTENTION FOR LEG INJURY FROM ROTATING
CUTTING BLADE.
5.
Symbol no. 7.25 according to CSN ISO 6405-01 (symbol
shows machine lifting points)
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6.
Sticker with information that the machine can´t be
transported with running cutting blade.
7.
Sticker with information of fuel type
8.
Sticker BLACK ARROW (shows blade turning direction)
9.
Sticker WHITE ARROW (shows blade setting against cut
material at the depth scale.
10.
Sticker showing the depth scale
11.
Sticker showing the noise value which was measured by
test according to conditions NV no.9/2002 in machines
(types – see point 2.1).
The value is only informative, it differs for each machine
type.
1.9 Dispose of packing material
NTC STAVEBNI TECHNIKA spol. s r.o. is registered by company EKO-KOM a.s. There is an agreement done for
redemption of packing materials with EKO-KOM a.s. by NTC STAVEBNI TECHNIKA spol. s r.o. or packing
materials suppliers.
2. TECHNICAL DESCRIPTION
The asphalt and concrete cutters RZ are
intended for cutting of asphalt and concrete
floors or road layers when repairing roads,
industrial areas, etc.
The machine is based on a rigid frame with
fixed spindle; the cutting disc is lowered to the
cut together with the whole frame. Lowering
and rising of the cutting disc is controlled by
means of a arrested handle that enables fine
regulation of cutting depth.
The machine is intended for wet cutting and
therefore it is equipped with a sprinkling
system. Water for sprinkling can be brought
either from machines-mounted water tank of
from external source.
The machines can be used also for dry cutting,
assuming a suitable cutting disc is used. This
method however causes high generation of dust
and thus breathing protection would be required.
The machine is driven by a single-cylinder,
four-stroke gasoline engine HONDA.
Travel is manual; the operator pushes the
machines by height-adjustable handle.
Floor saws RZ are equipped with a reference
depth scale.
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2.1. Basic Technical Data:
RZ 113
RZ 123
Cutting depth
(mm)
110
120
Cutting disc fastening
at right
at right
Max. disc dia
(mm)
300
350
Travel manual
manual
Cutting depth adjust.
manual
Fastening hole dia
(mm)
25,4
25,4
Spindle speed
(RPM)
3600
3600
Water tank capacity
(ltr)
12
12
Water supply
aqua clutch
aqua clutch
Weight (waterless)
(kg)
66
68
Dimensions L x W x H
(mm)
925x548x950
925x548x950
Engine HONDA GX160
HONDA GX200
Nominal power
(kW)
*3,6
*4,1
Max. speed
(RPM)
3600
3600
Oil sensor yes
yes
Fuel consumption
(ltr/hr)
1,4
1,7
- *Engine output is mentioned according to SAE 1349
Actual output of the engine installed in the machine can be different with regard to various factors, such as operation speed of the engine,
operation conditions, maintenance and other factors.
Engine operation speed is not identical with engine rated speed and this is set according to technical parameters of the machine.
2.2. Lubricants
For use in both engine use high-quality engine oils of the following specifications: 10W-30 API SJ/CF
- engine oil
HONDA GX160 approx. 0,6 ltr
HONDA GX200 approx. 0,6 ltr
Alternatively other quality oils of class SAE 10W-40 of classification API SG/CF 4, API SG/CE can be used.
Asphalt and concrete cutters Operation manual
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2.3. Identification
For communication with the manufacturer (i.e.
for warranty claims, service requests, spare parts
ordering) always report exact model and serial
number of your machine.
These data are stamped on the machine decal.
Fig. Machine decal
2.4. Engine Identification
In case of problems related to the engine report
also engine type and serial number. This number
is stamped on the engine block (HONDA) If you
have doubts, contact the manufacturer.
Fir. Location of the S/N on engine HONDA
3. PRIOR TO STARTING
- Check whether the engine leaking (leaks) oil. In case of defect, contact an authorized service
center or manufacturer.
- Bolted connections for loop control of depth of cut and the matrix arm guidance are glued.
Screws at the pulleys, the drive chassis are tight and prescribed the query moment. We therefore
recommend against any potential activity associated with permitting and tightening of joints, and
contact information to an authorized service center or manufacturer.
3.1. Check - Oil Level
It is highly recommended to check regularly the
engine oil level even at machines equipped with
the oil sensor.
In case of a machine without the oil sensor,
daily check is a must.
Clean the filling hole before checking or adding
oil. Wipe dry the dipstick and immerse it in the
oil without screwing it in.
If necessary, add specified sort of oil up to the
upper mark.
NOTE :
Operation with insufficient oil level may cause
serious damage to the engine.
Oil level checking procedure:
Have the machine at even surface. Remove the
filler cap, the oil comes out of the drain hole
slightly when the oil level is correct.
Check the engine oil level daily!
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3.2. Visual Inspection of the Machine
Check regularly the machine for:
missing parts
released bolts and screws
oil or fuel leakage
free motion of the cutting disc spindle
Pay special attention to safety devices (covers)
and controls.
3.3. Adding Fuel
1. Gasoline engines:
Use unleaded or leaded gasoline for motor
vehicles, with octane number 91 or more.
Top up fuel as necessary.
Never use dirty fuel or mixture with oil.
Avoid water and dust from entering the fuel
tank.
3.4. Check - Air Filter
Check the air filter for cleanness on a daily
basis. Clean or replace the filter if dirty.
Never run the machine with air filter missing or
damaged. Dust and dirt which get into the
engine would cause rapid wear.
Fig. Air filter - HONDA
3.5 Tipping machine
Tipping machine when the machine tipped over may break of oil into the carburetor, or the plunger.
Therefore, we recommend to inform the authorized service center, or the manufacturer about how to
proceed.
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4. OPERATION
4.1. Starting
4.1.1. Gasoline Engines HONDA
1. Turn the fuel tap into the ON position.
2. Turn on the electric switch of ignition.
3. Engage the choke („CHOKE“). Do not use it
at warm engine or at high ambient
temperature.
1. Adjust the throttle control lever to idle.
5. Pull out the starter grip slowly till some
resistance is felt, then pull vehemently. Do
not release the grip, but return it slowly into
the original position.
6. Let the engine to warm up, then disengage
the choke.
7. Let the engine to run at idle for a while
before loading.
8. For cutting, shift the throttle control lever to
fully open position.
DANGER!
The spindle and the cutting disc begins to
rotate immediately. Be sure that the
revolving disc would not cause any danger
for the bystanders. Have the disc cover closed
before starting.
4.2. Operation
4.2.1. Selection of the Cutting Disc
For safe and efficient operation, right selection
of the cutting disc is highly important. Choose a
high-quality diamond cutting disc and
appropriate type depending on the material to be
cut (asphalt, concrete).
Cutting discs of most suppliers are divided in
quality categories (standard/profi etc.),
sometimes also according to length and height
of the diamond segments, spacing, etc.
Cutting disc diameter is to be selected according
to the type of the machine; if possible, choose
always the maximal allowed diameter (see point
2.1). The spindle speed is adjusted for this size
to keep optimal circumferential cutting speed of
the disc.
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4.2.2. Fastening of the Cutting Disc
1. Turn off the engine and open the disc cover.
2. Use the enclosed wrenches to hold the
spindle and unscrew the fastening nut.
NOTE: Left thread!
3. Fit the cutting disc on the spindle and secure
it.
4. Close the disc cover and secure it.
4.2.3. Cutting
1. Have the disc raised above floor. Start the
engine and set full throttle.
2. Open the water tap to engage sprinkling.
3. Move the machine to the beginning of the
cut.
4. Lower slowly the disc into the cut, till
required cutting depth is reached.
5. Sensitively push the machine forward and
follow the marked path (use the guide).
6. The machine can only cut in straight
direction. In case the direction must be
changed, raise the disc from the cut, take
new direction and lower the disc again.
7. At the end of the cut, raise the disc, set the
throttle to idle.
NOTE! The cutting disc should be sprinkled
all the time. Follow the water level in the
tank and timely add water as necessary. Dry
cutting may cause fast damage to the disc.
For optimal service life of the cutting disc, the
operator should work carefully and sensitively.
Do not force the machine!
Nevertheless, lifetime of the disc may vary
depending on the material to be cut and other
factors.
4.2.4. Cutting Depth Scale
Cutters RZ 113 and RZ123 have just
informative cutting depth scale. Turning the
handle for 360 degrees lowers the blade for
about 15 mm.
4.3. Engine Turning-Off
1. Shift the throttle control lever to idle
position. (see point 4.1.1.4).
2. Let the engine to idle for a while to cool
down.
3. Turn the ignition switch to "OFF".
4. Close the fuel tap
Asphalt and concrete cutters Operation manual
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4.4. Handling, Transport, Storing
When handling the machine keep safety
regulation shown in this manual and well as
general safety rules valid for operation of lifting
or hoisting equipment.
4.4.1. Manual Handling
For manual lifting, cooperation of mode people
is required. Hold the machine by frame or the
base plate. Never lift the machine by engine.
4.4.2. Handling by Crane
Use a crane of sufficient payload (see Technical
Data). Observe the regulations valid for
operation of cranes. Only qualified personnel
may carry out this work.
Fasten the lifting cable to the marked point at
the machine.
4.4.3. Handling by Forklift
Should be the machine extensively handled by a
forklift (as when sending it by a parcel service),
it is recommended to palletize it. For one
machine use "small" palette (0,8x0,6m), for two
machines standard EUR pallet (1,2x0,8m).
4.4.4. Transport
Secure the machine against rolling over, falling
down or sliding on the carrier. Fasten the
binding means to suitable points at the frame.
NOTE:
The machine must be kept in upright position. If
overturning happens, see point 3.5.
4.4.5. Storing
Store the machine on a safe place, secured from
theft and misuse. We recommend an indoor dry
place, without excessive concentration of
chemical agents and dust.
Prior to long-term storing clean the machine,
repair the paint and apply suitable preservation
agents. Mark visibly that the machine has been
conservated.
4.5. Special Conditions of Operation
4.5.1. Work at Low Temperatures
The cutter is able to work even at low
temperatures. Let the engine to warm up
sufficiently before commencing the work.
In case that the machine is difficult to start, let it
warm up at room temperature first.
4.5.2. Work at High Altitudes
With rising altitude the engine power decreases
due to changed air/fuel ratio. The engine power
can be partially improved by changing of the
main nozzle and different adjustment of the
carburetor.
In case that the engine should work long-term
above 1500 m above seal level, we recommend
to contact a nearest authorized service for the
respective engine.
In case that you plan this kind of operation
already when purchasing a new machine, notify
the manufacturer.
4.5.3. Work in Dusty Environment
In case of dusty environment shorten the
cleaning/replacement intervals of the air filter to
half. Clean the machine from dust regularly.
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5. MAINTENANCE
The basic activities of maintenance, which are described in this Manual can be carried out by the
designated operator.
Repairs and adjustments beyond the extent of this Manual should be committed to an authorized service.
It is forbidden to intervent the engine (except for standart maintenance) during warranty period.
Bolted connections to the loop control of depth of cut and the matrix arm of instruction (at RZ 120,
170) are glued. Screw with a pulley, the drive chassis are tight and prescribed the query moment ..
We therefore recommend against any potential activity associated with permitting and tightening
of joints, and contact information to an authorized service center or manufacturer.
5.1. Maintenance of the Engine
- see enclosed Engine Operation Manual
5.2. Tensioning of the Drive Belts
check regularly tensioning of the drive belts that
drive the cutting disc. Deflection of the belts
under finger pressure should be about 5 mm.
To tension the belts, proceed as follows:
loosen 4 bolts which fasten the engine to
the base plate
turn the tensioning screw to tension the
belts
re-tighten the fastening bolts
When replacing the belts, use all belts of the
same type and dimension.
NOTE! Do not over-tension the belts!
5.3. Inspection of Bolted Connections
It is recommended to inspect the bolted
connections daily before work.
5.4. Adjustment of Engine Speed
In case of engine replacement or repair it is necessary to
adjust engine speed.
Speed is measured by
a digital tachometer.
Therefore, the speed
setting is
recommended to
entrust a qualified
serviceman.
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6. MAINTENANCE SCHEDULE
This maintenance schedule contains only the most important operations. Besides of these operations, carry out maintenance and repairs of the machine
as necessary depending on the respective conditions of operation. Check also the engine operation manual.
WARNING:
Turn off the engine before any maintenance or repair activity.
Use genuine spare parts only. Use of non-original spare parts may lead to damage to the machine. The manufacturer will not honor any
warranty claim arising from such reason.
Item
Operation
Initial inspection
After 1st month or 20
hrs.
Every 3 months or 50
hrs.
Every 6 months or
100 hrs.
Engine oil
Inspection of oil level
DAILY
Exchange
Air filter
Inspection
Cleaning
(1)
Spark plug (gasoline
engines)
Inspection - cleaning
Cyclone filter
Cleanig
(3)
Filter bowl
Cleaning
Fuel hose
Inspection - Exchange
Every two years
Valve clearance
Inspection - adjustment
Every 12 months or 250 hrs. (2)
Fuel tank and strainer
Cleaning
Every 12 months or 300 hrs. (2)
Drive belt
Tensioning
1. To be carried more often when operating in dusty environment!!!
2. Such maintenance should be performed by service technicians NTC, respectively. authorized service according to engine type, especially
if the user does not have the proper tools and knowledge about these devices.
3. In case the engine is equipped by cyclone filter.
Asphalt and concrete cutters Operation manual
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7. WARRANTY CONDITIONS
Construction machines manufactured by NTC are designed and manufactured to suit longterm operation by most difficult conditions. Based on our
experience we can say that these machines do work reliably not during the warranty period but also long time after the warranty expires.
If it happens that the machine does not work to your satisfaction, we are always here to help. In case of any failure please proceed as following:
1. Check if the failure isn´t caused by breaking operation manual or if it isn´t caused by a basic cause (not enough fuel in the tank, low level of
engine oil, dirty air filter).
2. If you were unable to fix the failure, contact the manufacturer or its authorized service (see warranty protocol).
3. Mention following info there:
Company name, your name, phone and fax number
Machine type, serial number
Type of failure
If the machine is in warranty, write date of purchase and let the serviceman know it is a warranty case
4. Warranty claim needs to be done in written form, best if Warranty claim form is used.
5. Every warranty claim will be checked by authorized staff immediately and the way of repair will be suggested.
Warranty conditions are described in the agreement with particular distributor.
The right for warranty expires in following cases:
- Machine was not used and maintained according to operation manual or was damaged by inadequate intervention by operator or unathorised
service
- Machine was not serviced according to maintenance plan in operation manual
- Machine was used in different conditions or for different purpose than it is determined to
- Other refills or spare parts than recommended were used for repair or maintenance
- Machine had an accident or was damaged by force majeure
- Intervention to the machine construction was done without manufacturer approval
- Failures were caused by inadequate storing or manipulation
- Items of common wear such as drive belts, bowdens, filters, plastic washers, blades, etc. are excluded from warranty
Asphalt and concrete cutters Operation manual
Page 20 issued 01/2017
Warranty protocol
Number: (to be filled by warranty dept.)
Failure description (to be filled by machine operator):
Machine type:
Serial number:
Detailed failure
description:
Is the machine capable of operation?
YES*
NO*
Date of failure occuring:
Date of failure
reporting:
Machine sale date:
Machine
purchased from:
NTC / dealer*
Dealer:
Machine owner:
(adress, phone no.,
contact person)
Machine operation site:
(if different from owner´s
address)
Please send properly filled protocol by fax, e-mail or post to above mentioned address,
you will speed the process up!
Accepting the warranty (to be filled in by warranty dept. of NTC):
Date of repair start:
Date of repair
finish:
Internal no:
Signature:
NTC STAVEBNÍ TECHNIKA spol. s.r.o. P-913-5
Jiřinková 120, 552 03 Česká Skalice
tel: 491 452 184 fax: 491 401 609
E-mail: ntc@ntc.cz www.ntc.cz
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Claimed failure remedy (to be filled by NTC production dept.):
Way of repairing the
failure:
Repair by the user
Repair by NTC
Further way
(sending spare
parts)
Description of
repairing the failure:
Warranty claim
assessment:
YES/NO*
Reason:
Used spare parts:
Part no.
Description
Pcs
Tech. director sign. : Production director sign:
Finishing warranty management (to be filled by warranty dept. of NTC):
Returning the machine to
owner (in case of repair in
NTC):
Arranged by:
Way of transport:
Shipment date:
Warranty extension:
Amount of days:
Warranty valid to:
Warranty solution
information to owner:
Date:
Name:
Signature:
Repair costs:
Costs charged to
supplier:
Final repair costs:
Asphalt and concrete cutters Operation manual
Page 22 issued 01/2017
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