DCH 230/
DCH 180-SL
Operating instructions
Mode d’emploi
Manual de instrucciones
Manual de instruções
Printed: 07.07.2013 | Doc-Nr: PUB / 5127702 / 000 / 00
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fr
es
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This Product is Certified
Ce produit est homologué
Producto homologado por
Este produto está registrado
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ORIGINAL OPERATING INSTRUCTIONS
DCH 230/ DCH 180-SL diamond cutter
It is essential that the operating instructions
are read before the machine is operated for
the first time.
Always keep these operating instructions together with the machine.
Ensure that the operating instructions are
with the machine when it is given to other
persons.
Contents
1 General information
2 Description
3 Accessories
4 Technical data
5 Safety instructions
6 Before use
7 Operation
8 Care and maintenance
9 Troubleshooting
10 Disposal
11 Manufacturer’s warranty
Page
2
2
5
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16
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1 These numbers refer to the corresponding illustrations. The illustrations can be found on the fold-out cover
pages. Keep these pages open while studying the operating instructions.
In these operating instructions, the designation “power
tool” always refers to the DCH 230 and/or DCH 180-SL
diamond cutters.
DCH 230 operating controls and indicators 1
@ Spindle lockbutton
; Front grip
= On / off switch
% Switch-on interlock release button
& Diamond cutting disc
( Spindle
) DCH‑EX 230 guard
) Guard (hood)
+ Guide wheels
§ Clamping nut wrench, 24 mm AF / 10 mm AF
en
/ Hex. socket wrench, 6 mm AF
: Guard (hood) clamping screw
· Dust removal connector cap
$ Service indicator
£ Theft protection indicator (option)
DCH 230 mounting system 2
| Clamping flange, 41 mm dia., with O‑ring
¡ M 14 clamping nut
Q Kwik‑Lock quick-release clamping nut (optional)
Depth gauge (option for the DCH 230) 3
W Hood extension
E Hook
R Stop
T Cutting depth sliding indicator
Z Cutting depth scale
DCH 180‑SL operating controls and indicators 4
@ Spindle lockbutton
; Front grip
= On / off switch
% Switch-on interlock release button
& Diamond cutting disc
( Spindle
) DCH‑EX 180-SL slitting hood
+ Guide wheels
§ Clamping nut wrench, 24 mm AF / 10 mm AF
/ Hex. socket wrench, 6 mm AF
: Guard (hood) clamping screw
· Dust removal connector cap
$ Service indicator
£ Theft protection indicator (option)
Parts of the DCH 180‑SL 5
U DCH‑EX 180-SL slitting hood
I Spindle extension
O M 6 x 65 screw
P Spacer ring
Ü Hood extension release catch / cutting depth adjustment
[ M 14 clamping nut
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1 General information
Symbols
1.1 Safety notices and their meaning
en
DANGER
Draws attention to imminent danger that will lead to
serious bodily injury or fatality.
WARNING
Draws attention to a potentially dangerous situation that
could lead to serious personal injury or fatality.
CAUTION
Draws attention to a potentially dangerous situation that
could lead to slight personal injury or damage to the
equipment or other property.
NOTE
Draws attention to an instruction or other useful information.
Read the
operating
instructions
before use.
Return waste
material for
recycling.
Amps
Volts
Alternating
current
Revolutions
per minute
Revolutions
per minute
Diameter
Rated speed
Double
insulated
1.2 Explanation of the pictograms and other
information
Warning signs
General
warning
Location of identification data on the machine
The type designation and serial number can be found on
the type identification plate on the machine. Make a note
of this data in your operating instructions and always refer
to it when making an enquiry to your Hilti representative
or service department.
Warning:
electricity
Obligation signs
Type:
Wear a hard
hat.
Wear eye
protection.
Wear safety
shoes.
Wear
breathing
protection.
Wear ear
protection.
Wear
protective
gloves.
Generation: 01
Serial no.:
2 Description
2.1 Use of the product as directed
The DCH 230 is an electrically-powered diamond cutter and the DCH 180‑SL is an electrically-powered diamond
slitting tool, both designed for professional use in the construction industry.
The DCH 230 is designed for cutting mineral materials using diamond cutting discs without water and can also be
used for cutting metals when fitted with a synthetic resin-bonded fiber-reinforced cutting disc.
The DCH 180‑SL is designed for slitting mineral materials using diamond cutting discs without water.
A vacuum cleaner with the appropriate filter, e.g. Hilti VCD 50 vacuum cleaner, must be used when cutting mineral
materials.
In order to avoid electrostatic effects, a vacuum cleaner equipped with an antistatic hose should be used.
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Use only diamond cutting discs with a maximum permissible peripheral speed of at least 80 m/sec (16000 ft/min)
or synthetic resin-bonded fiber-reinforced cutting discs with a maximum permissible peripheral speed of at least
80 m/sec (16000 ft/min).
The power tool is to be used exclusively in pushing mode (counter rotation).
The use of liquids, e.g. to cool the disc or suppress dust, is not permissible.
Do not use the power tool for cutting with cutting tools of a type not specified in these operating instructions (e.g.
circular saw blades) or for grinding.
The working environment may be as follows: construction site, workshop, renovation, conversion or new construction.
To avoid the risk of injury, use only genuine Hilti accessories and cutting tools.
Observe the safety rules and operating instructions for the accessories used.
Observe the information printed in the operating instructions concerning operation, care and maintenance.
The machine is designed for professional use and may be operated, serviced and maintained only by trained,
authorized personnel. This personnel must be informed of any special hazards that may be encountered. The machine
and its ancillary equipment may present hazards when used incorrectly by untrained personnel or when used not as
directed.
The machine may be used only in a dry environment.
The machine may be operated only when connected to a power supply providing a voltage and frequency in
compliance with the information given on its type identification plate.
Do not use the machine where there is a risk of fire or explosion.
Working on materials hazardous to the health (e.g. asbestos) is not permissible.
Nationally applicable industrial safety regulations must be observed.
Modification of the machine or tampering with its parts is not permissible.
2.2 Switches
On/off switch with switch-on interlock
2.3 Starting current limitation
The starting current drawn by the power tool is several times higher than its rated current. The electronic starting
current limiter reduces the starting current drawn by the power tool and thus prevents the mains fuse blowing. It also
allows the power tool to start smoothly, without a jolt.
2.4 Restart interlock
The power tool does not restart by itself after an interruption in the electric supply. The switch must first be released
and then pressed again after approx. 1 second.
2.5 TPS theft protection system (optional)
The power tool may be optionally equipped with the TPS theft protection system. If equipped with this feature, the
power tool can be unlocked and made ready for operation only through use of the corresponding TPS key.
2.6 LED indicators
Service indicator LED (see section “Care and maintenance / service indicator”)
Theft protection system indicator (optional) (see section “Operation / TPS theft protection system (optional)”)
2.7 Guard (hood) with guide wheels
Cutting and slitting work on mineral materials may be carried out only when the power tool is equipped with a dust
removal hood with guide wheels.
2.8 Electronic overload protection
This power tool is equipped with electronic overload protection.
The electronic overload protection system monitors the current input and thus prevents overloading of the tool during
use.
The power tool switches itself off automatically when excessive pressure is applied resulting in excessively high
electric current input.
After releasing the on / off switch, the power tool can be restarted.
The user can prevent activation of this automatic cut out by reducing the pressure applied to the tool.
The user should aim to work continuously with the tool without activation of the automatic cut-out.
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en
2.9 Using extension cords
Use only extension cords of a type approved for the application and with conductors of adequate gauge. The power
tool may otherwise lose performance and the extension cord may overheat. Check the extension cord for damage at
regular intervals. Replace damaged extension cords.
Recommended minimum conductor gauge (cross section) and max. cable lengths
en
Conductor cross section
Mains voltage 110-120 V
14 AWG
-
12 AWG
125 ft
Do not use extension cords with 16 AWG conductor cross section.
2.10 Using extension cords outdoors
When working outdoors, use only extension cords that are approved and correspondingly marked for this application.
2.11 Using a generator or transformer
This tool may be powered by a generator or transformer when the following conditions are fulfilled: The unit must
provide a power output in watts of at least twice the value printed on the type identification plate on the power tool.
The operating voltage must remain within +5% and -15% of the rated voltage at all times, frequency must be in the 50
– 60 Hz range and never above 65 Hz, and the unit must be equipped with automatic voltage regulation and starting
boost.
Never operate other power tools or appliances from the generator or transformer at the same time. Where applicable,
use a generator or transformer designed for simultaneous power tool and vacuum cleaner operation. Switching other
power tools or appliances on and off may cause undervoltage and / or overvoltage peaks, resulting in damage to the
power tool.
2.12 Depth gauge (option for the DCH 230)
The DCH 230 can also be fitted with an optional depth gauge. This improves dust removal performance for cutting
mineral materials. The desired maximum cutting depth can be set with the aid of the cutting depth scale on the hood
extension.
The depth gauge is standard equipment with the DCH 180‑SL.
2.13 Kwik-Lock clamping nut for cutting discs (optional, only for the DCH 230)
The Kwik-Lock nut can be used instead of the 41 mm dia. clamping nut. No tools are then required for changing
cutting discs.
2.14 Items supplied as standard with the DCH 230
1
1
1
Power tool with DCH‑EX 230 hood
Clamping flange, 41 mm dia., with O‑ring
M 14 clamping nut
1
Clamping nut wrench, 24 mm AF / 10 mm AF
1
Cardboard box
1
1
Hex. socket wrench, 6 mm AF
Operating instructions
2.15 Items supplied as standard with the DCH 180-SL
1
5
1
DCH‑EX 180‑SL with dust hood and depth
gauge
Spacer ring (3 mm, 6 mm, 2 x 13 mm, 21 mm)
M 14 clamping nut
1
Clamping nut wrench, 24 mm AF / 10 mm AF
1
Cardboard box
1
1
Hex. socket wrench, 6 mm AF
Operating instructions
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2.16 Cutting disc specifications
Diamond cutting discs in compliance with ANSI B7.1 are to be used with the DCH 230 and DCH 180-SL. Synthetic
resin-bonded fiber-reinforced cutting discs in compliance with ANSI B7.1 (cutting-off wheels of the straight, not offset
type) may also be used with the DCH 230 for working on metals.
The mounting instructions issued by the disc manufacturer must also be observed.
en
3 Accessories
Designation
Item number, description
DCH 230 / 180‑SL conversion set
DCH‑EX 180‑SL slitting hood, comprising; spindle extension; M 6 x65 screw; 5 spacer rings (3 mm, 6 mm,
2 x 13 mm, 21 mm), M 14 clamping nut
Kwik-Lock clamping nut (only for the DCH 230)
Key for quick-release clamping nut
Depth gauge for the DCH 230
212187
Vacuum cleaner from the Hilti range
Antistatic hose, complete
203867, Length 5 m (16.4 ft), ∅36 mm
Hilti toolbox
47986
4 Technical data
Right of technical changes reserved.
Other information about the
power tool
DCH 230
DCH 180‑SL
Rated voltage
120 V
120 V
Rated current input
20 A
20 A
Mains frequency
60 Hz
60 Hz
Dimensions (L x W x H)
670 mm (26.38") x 240 mm (9.45") x
210 mm (8.27")
Drive spindle thread
M 14
620 mm (24.41") x 275 mm
(10.83") x 185 mm
(7.28")
M 14
Disc arbor size
22.2 mm (0.87")
22.2 mm (0.87")
Cutting disc
∅ Max. 230 mm (9")
∅ Max. 180 mm (7")
Cutting disc thickness
Max. 3 mm (Max. 0.12")
Max. 3 mm (Max. 0.12")
Weight of the power tool
8.6 kg (18.96 lb)
9.2 kg (20.28 lb)
Protection class
Rated speed under no load
Protection class I (grounded) or
protection class II (double insulated). See type identification plate.
Max. 6,500/min
Protection class I (grounded) or
protection class II (double insulated). See type identification plate.
Max. 6,500/min
Clamping nut tightening torque
M14: 30 Nm (22 lb/ft)
M14: 30 Nm (22 lb/ft)
Spindle extension tightening torque
9 Nm (7 lb/ft)
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5 Safety instructions
5.1 General Power Tool Safety Warnings
a)
en
WARNING
Read all safety warnings and instructions. Failure
to follow the warnings and instructions may result
in electric shock, fire and/or serious injury. Save all
warnings and instructions for future reference.
The term “power tool” in the warnings refers to
your mains-operated (corded) power tool or batteryoperated (cordless) power tool.
5.1.1 Work area safety
Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
b) Do not operate power tools in explosive atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
c) Keep children and bystanders away while operating a power tool. Distractions can cause you to lose
control.
a)
5.1.2 Electrical safety
Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any adapter
plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk
of electric shock.
b) Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
c) Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the
risk of electric shock.
d) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electric shock.
e) When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.
f) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk
of electric shock.
a)
5.1.3 Personal safety
Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools
may result in serious personal injury.
b) Use personal protective equipment. Always wear
eye protection. Protective equipment such as dust
mask, non-skid safety shoes, hard hat, or hearing
a)
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protection used for appropriate conditions will reduce
personal injuries.
c) Prevent unintentional starting. Ensure the switch
is in the off‐position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energising power tools that have the switch
on invites accidents.
d) Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result
in personal injury.
e) Do not overreach. Keep proper footing and balance at all times. This enables better control of the
power tool in unexpected situations.
f) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewellery
or long hair can be caught in moving parts.
g) If devices are provided for the connection of dust
extraction and collection facilities, ensure these
are connected and properly used. Use of dust
collection can reduce dust-related hazards.
5.1.4 Power tool use and care
Do not force the power tool. Use the correct
power tool for your application. The correct power
tool will do the job better and safer at the rate for
which it was designed.
b) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be
repaired.
c) Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
d) Store idle power tools out of the reach of children and do not allow persons unfamiliar with the
power tool or these instructions to operate the
power tool. Power tools are dangerous in the hands
of untrained users.
e) Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power
tool’s operation. If damaged, have the power tool
repaired before use. Many accidents are caused by
poorly maintained power tools.
f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc.
in accordance with these instructions taking into
account the working conditions and the work to
be performed. Use of the power tool for operations different from those intended could result in a
hazardous situation.
a)
5.1.5 Service
a)
Have your power tool serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the power tool is
maintained.
5.2 Safety warnings common for abrasive cuttingoff operations
This power tool is intended to function as a cutoff tool. Read all safety warnings, instructions,
illustrations and specifications provided with this
power tool. Failure to follow all instructions listed
below may result in electric shock, fire and/or serious
injury.
b) Operations such as grinding, sanding wire brushing or polishing are not recommended to be performed with this power tool Operations for which
the power tool was not designed may create a hazard
and cause personal injury.
c) Do not use accessories which are not specifically
designed and recommended by the tool manufacturer. Just because the accessory can be attached
to your power tool, it does not assure safe operation.
d) The rated speed of the accessory must be at
least equal to the maximum speed marked on the
power tool. Accessories running faster than their
rated speed can break and fly apart.
e) The outside diameter and the thickness of your
accessory must be within the capacity rating of
your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
f) The arbour size of wheels, flanges, backing pads
or any other accessory must properly fit the spindle of the power tool. Accessories with arbour holes
that do not match the mounting hardware of the
power tool will run out of balance, vibrate excessively and may cause loss of control.
g) Do not use a damaged accessory. Before each
use inspect the accessory such as abrasive
wheels for chips and cracks, backing pad for
cracks, tear or excess wear, wire brush for loose
or cracked wires. If power tool or accessory
is dropped, inspect for damage or install an
undamaged accessory. After inspecting and
installing an accessory, position yourself and
bystanders away from the plane of the rotating
accessory and run the power tool at maximum
no-load speed for one minute. Damaged
accessories will normally break apart during this test
time.
h) Wear personal protective equipment. Depending
on application, use face shield, safety goggles or
safety glasses. As appropriate, wear dust mask,
hearing protectors, gloves and workshop apron
capable of stopping small abrasive or workpiece
fragments. The eye protection must be capable
of stopping flying debris generated by various
operations. The eye protection must be capable of
stopping flying debris generated by various operations. The dust mask or respirator must be capable of
filtrating particles generated by your operation. Proa)
longed exposure to high intensity noise may cause
hearing loss.
i) Keep bystanders a safe distance away from
work area. Anyone entering the work area must
wear personal protective equipment. Fragments
of workpiece or of a broken accessory may fly
away and cause injury beyond immediate area of
operation.
j) Hold the power tool by insulated gripping surfaces
only, when performing an operation where the
cutting accessory may contact hidden wiring or
its own cord. Cutting accessory contacting a "live"
wire may make exposed metal parts of the power tool
"live" and could give the operator an electric shock.
k) Position the cord clear of the spinning accessory.
If you lose control, the cord may be cut or snagged
and your hand or arm may be pulled into the spinning
accessory.
l) Never lay the power tool down until the accessory has come to a complete stop. The spinning
accessory may grab the surface and pull the power
tool out of your control.
m) Do not run the power tool while carrying it at your
side. Accidental contact with the spinning accessory
could snag your clothing, pulling the accessory into
your body.
n) Regularly clean the power tool’s air vents. The
motor’s fan will draw the dust inside the housing
and excessive accumulation of powdered metal may
cause electrical hazards.
o) Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
p) Do not use accessories that require liquid
coolants. Using water or other liquid coolants may
result in electrocution or shock.
5.3 Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged
rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the uncontrolled
power tool to be forced in the direction opposite of the
accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched
by the workpiece, the edge of the wheel that is entering
into the pinch point can dig into the surface of the material
causing the wheel to climb out or kick out. The wheel may
either jump toward or away from the operator, depending
on direction of the wheel’s movement at the point of
pinching. Abrasive wheels may also break under these
conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be
avoided by taking proper precautions as given below.
a)
Maintain a firm grip on the power tool and position your body and arm to allow you to resist
kickback forces. Always use auxiliary handle, if
provided, for maximum control over kickback or
torque reaction during start-up. The operator can
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en
control torque reactions or kickback forces, if proper
precautions are taken.
b) Never place your hand near the rotating accessory. Accessory may kickback over your hand.
c) Do not position your body in the area where power
tool will move if kickback occurs. Kickback will
propel the tool in direction opposite to the wheel’s
movement at the point of snagging.
d) Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a
tendency to snag the rotating accessory and cause
loss of control or kickback.
e) Do not attach a saw chain woodcarving blade or
toothed saw blade. Such blades create frequent
kickback and loss of control.
5.4 Safety warnings specific for grinding and
abrasive cutting-off operations
Use only wheel types that are recommended for
your power tool and the specific guard designed
for the selected wheel. Wheels for which the power
tool was not designed cannot be adequately guarded
and are unsafe.
b) The guard must be securely attached to the power
tool and positioned for maximum safety, so the
least amount of wheel is exposed towards the operator. The guard helps to protect operator from broken wheel fragments, accidental contact with wheel
and sparks that could ignite clothing.
c) Wheels must be used only for recommended applications. For example: do not grind with the
side of cut-off wheel.Abrasive cut-off wheels are
intended for peripheral grinding, side forces applied
to these wheels may cause them to shatter.
d) Always use undamaged wheel flanges that are of
correct size and shape for your selected wheel.
Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. Flanges for
cut-off wheels may be different from grinding wheel
flanges.
e) Do not use worn down wheels from larger power
tools. Wheel intended for larger power tool is not
suitable for the higher speed of a smaller tool and
may burst.
a)
5.5 Additional safety warnings specific for abrasive
cutting-off operations
Do not ²jam² the cut-off wheel or apply excessive
pressure. Do not attempt to make an excessive
depth of cut. Overstressing the wheel increases the
loading and susceptibility to twisting or binding of
the wheel in the cut and the possibility of kickback or
wheel breakage.
b) Do not position your body in line with and behind
the rotating wheel. When the wheel, at the point
of operation, is moving away from your body, the
possible kickback may propel the spinning wheel
and the power tool directly at you.
c) When wheel is binding or when interrupting a cut
for any reason, switch off the power tool and hold
a)
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the power tool motionless until the wheel comes
to a complete stop. Never attempt to remove the
cut-off wheel from the cut while the wheel is in
motion otherwise kickback may occur.Investigate
and take corrective action to eliminate the cause of
wheel binding.
d) Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully
reenter the cut. The wheel may bind, walk up or kickback if the power tool is restarted in the workpiece.
e) Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own weight.
Supports must be placed under the workpiece near
the line of cut and near the edge of the workpiece on
both sides of the wheel.
f) Use extra caution when making a "pocket cut"
into existing walls or other blind areas. The protruding wheel may cut gas or water pipes, electrical
wiring or objects that can cause kickback.
5.6 Safety instruction for all operations
5.6.1 Safety instructions for all operations
Use only wheel types that are recommended for your
power tool and the specific guard designed for the
selected wheel. Wheels for which the power tool was not
designed cannot be adequately guarded and are unsafe.
5.6.2 Personal safety
During hand-held use, always hold the machine
securely with both hands on the grips provided.
Keep the grips dry, clean and free from oil and
grease.
b) Hold power tools by insulated gripping surfaces
when performing an operation where the cutting
tool may contact hidden wiring or its own cord.
Contact with a live wire will make exposed metal
parts of the power tool live and the operator will be
at risk of receiving an electric shock.
c) Breathing protection must be worn if the power
tool is used without a dust extraction system for
work that creates dust. Close the cap over the
dust removal connector.
d) Improve the blood circulation in your fingers by
relaxing your hands and exercising your fingers
during breaks between working.
e) Avoid touching rotating parts. Switch the power
tool on only after bringing it into position at the
workpiece. Touching rotating parts, especially rotating drill bits, discs or blades, etc. may lead to
injury.
f) Always lead the supply cord and extension cord
away from the power tool to the rear while working. This helps to avoid tripping over the cord while
working.
g) The guard must always be fitted when the power
tool is used for cutting metals. Close the cap over
the dust removal connector.
h) If the work involves breaking right through, take
the appropriate safety measures at the opposite
a)
i)
j)
k)
l)
side. Parts breaking away could fall out and / or fall
down and injure other persons.
Children must be instructed not to play with the
machine.
The machine is not intended for use by children,
by debilitated persons or those who have received
no instruction or training.
Do not use the power tool if it starts with a jolt.This
may be an indication that the electronic control unit
is defective. Have the power tool repaired by Hilti
Service immediately.
WARNING: Some dust created by grinding, sanding, cutting and drilling contains chemicals known
to cause cancer, birth defects, infertility or other
reproductive harm; or serious and permanent respiratory or other injury. Some examples of these
chemicals are: lead from lead-based paints, crystalline silica from bricks, concrete and other masonry
products and natural stone, arsenic and chromium
from chemically-treated lumber. Your risk from these
exposures varies, depending on how often you do
this type of work. To reduce exposure to these
chemicals, the operator and bystanders should
work in a well-ventilated area, work with approved safety equipment, such as respiratory protection appropriate for the type of dust generated,
and designed to filter out microscopic particles
and direct dust away from the face and body.
Avoid prolonged contact with dust. Wear protective clothing and wash exposed areas with soap
and water. Allowing dust to get into your mouth,
nose, eyes, or to remain on your skin may promote
absorption of harmful chemicals.
5.6.3 Power tool use and care
Cutting discs must be stored, handled and fitted
carefully in accordance with the manufacturer’s
instructions.
b) If use of a spacer ring or other intermediate part is
specified and the part is supplied with the cutting
disc, check to ensure that the part is fitted.
c) Secure the workpiece. Use clamps or a vice to
secure the workpiece. The workpiece is thus held
more securely than by hand and both hands remain
free to operate the machine.
d) Before use, check that the cutting disc has been
fitted correctly and the clamping nut tightened.
Then allow the power tool to run for 30 seconds
under no load while holding it in a secure position. Switch off the power tool immediately if
significant vibration or any other faults are noticed. Should this occur, check the entire system
in order to determine the cause.
e) Take steps to ensure that flying sparks from the
power tool do not present a hazard, i.e. by striking
yourself or other persons. Adjust the position of
the disc guard accordingly.
f) Slits cut in loadbearing walls of buildings or other
structures may influence the statics of the structure,
especially when steel reinforcing bars or load-bearing
components are cut through. Consult the structural
a)
engineer, architect, or person in charge of the
building project before beginning the work.
g) Guide the power tool carefully and make straight
cuts in order to avoid jamming the cutting disc.
Cutting curves is not permissible.
h) Guide the power tool evenly and do not apply
lateral pressure to the cutting disc. Always bring
the power tool into contact with the workpiece
at right angles. Do not attempt to alter the line
of cut by applying lateral pressure or by bending
the cutting disc while cutting is in progress. This
presents a risk of damaging or breaking the cutting
disc.
5.7 Safety instruction for all operations
5.7.1 Electrical safety
Before beginning work, check the working area
(e.g. using a metal detector) to ensure that no
concealed electric cables or gas and water pipes
are present. External metal parts of the machine may
become live, for example, when an electric cable is
damaged accidentally. This presents a serious risk of
electric shock.
b) Check the machine’s supply cord at regular intervals and have it replaced by a qualified specialist
if found to be damaged. If the machine’s supply cord is damaged it must be replaced with
a specially-prepared supply cord available from
Hilti Customer Service. Check extension cords at
regular intervals and replace them if found to be
damaged. Do not touch the supply cord or extension cord if damaged while working. Disconnect
the supply cord plug from the power outlet. Damaged supply cords or extension cords present a risk
of electric shock.
c) Dirty or dusty machines which have been used frequently for work on conductive materials should
be checked at regular intervals at a Hilti Service
Center. Under unfavorable circumstances, dampness or dust adhering to the surface of the machine, especially dust from conductive materials, may
present a risk of electric shock.
d) When working outdoors with a power tool check
to ensure that the tool is connected to the electric
supply by way of a ground fault circuit interrupter
(GFCI) with a rating of max. 30 mA (tripping current). Use of a ground fault circuit interrupter reduces
the risk of electric shock.
e) Use of a ground fault circuit interrupter (GFCI)
with a maximum tripping current of 30 mA is
recommended.
a)
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5.7.2 Work area safety
Ensure that the workplace is well ventilated. Exposure
to dust at a poorly ventilated workplace may result in
damage to the health.
en
hat, ear protection, protective gloves and breathing
protection while the machine is in use.
5.7.3 Personal protective equipment
The user and any other persons in the vicinity must
wear ANSI Z87.1-approved eye protection, a hard
6 Before use
4.
5.
WARNING
The supply cord must be disconnected from the electric supply and the cutting disc or drive spindle must
have come to a complete stop before attempting to
change or adjust discs, parts of the tool or its accessories.
CAUTION
The mains voltage must comply with the specification
given on the type identification plate. Ensure that the
power tool is disconnected from the electric supply.
CAUTION
Wear protective gloves, especially when changing
discs, adjusting the guard (hood) and when fitting the
depth gauge.
6.1 Guard (hood)
WARNING
Never use the power tool without the guard (hood).
NOTE
If the guard (hood) clamping force is found to be inadequate, this can be increased by tightening the clamping
screw slightly.
6.1.1 Fitting and adjusting the guard (hood) 6 7
1.
2.
3.
Disconnect the supply cord plug from the power
outlet.
Use the hex. socket wrench to release the clamping
screw.
Fit the guard (hood) onto the collar on the gearing
section.
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Rotate the guard (hood) into the desired position.
Use the hex. socket wrench to tighten the clamping
screw.
6.1.2 Removing the guard (hood)
1.
2.
3.
Disconnect the supply cord plug from the power
outlet.
Use the hex. socket wrench to release the clamping
screw.
Rotate the guard (hood) and pull it away from the
tool.
6.2 Depth gauge (optional)
6.2.1 Fitting / removing the depth gauge for the
DCH 230 3
1.
2.
3.
4.
Disconnect the supply cord plug from the power
outlet.
Fit the hook over the guide wheel axle.
Pivot the hood extension into the hood until the
catch is heard to engage.
To remove the hood extension, press the catch and
pivot the hood extension down and away from the
hood.
6.2.2 Using the depth gauge to set the cutting
depth for the DCH 230
1.
2.
Press the cutting depth sliding indicator.
Move the cutting depth sliding indicator to the desired cutting depth.
6.2.3 Using the depth gauge to set the cutting
depth for the DCH 180‑SL
The depth gauge forms and integral part of the
DCH 180‑SL and cannot be removed.
1. Press the catch.
2. Set the desired cutting depth by adjusting the depth
gauge.
6.3 Fitting a cutting disc
CAUTION
Use only cutting tools with a rated maximum permissible speed which is at least as high as the machine’s
highest no-load running speed.
CAUTION
Cutting discs which are damaged or out of round
(causing vibration) must not be used.
CAUTION
Do not use synthetic resin-bonded fiber-reinforced
cutting discs that have exceeded their use-by date.
the nut by hand. Should it be necessary, use the key to
release the Kwik-Lock nut (do not use a pipe wrench!).
1.
2.
3.
4.
CAUTION
The spindle extension may used only in conjunction
with the DCH‑EX 180‑SL slitting hood.
5.
NOTE
Diamond cutting discs in compliance with ANSI B7.1
are to be used with the DCH 230 and DCH 180-SL.
Synthetic resin-bonded fiber-reinforced cutting discs in
compliance with ANSI B7.1 (cutting-off wheels of the
straight, not offset type) may also be used with the DCH
230 for working on metals. The mounting instructions
issued by the disc manufacturer must also be observed.
6.
6.3.1 Fitting diamond cutting discs and synthetic
resin-bonded fiber-reinforced cutting discs to
the DCH 230
1.
2.
3.
4.
5.
6.
7.
8.
Disconnect the supply cord plug from the power
outlet.
Clean the clamping flange and the clamping nut.
CAUTION The clamping flange is equipped with
an O-ring. If this O-ring is missing, the clamping
flange must be replaced.
Place the 41 mm dia. clamping flange on the spindle
so that it cannot rotate.
Place the cutting disc on the centering collar of the
clamping flange.
Fit the clamping nut.
CAUTION Do not press the spindle lockbutton
before the drive spindle has stopped rotating.
Press the spindle lockbutton and hold it in this
position.
Use the wrench to tighten the clamping nut securely
and then release the spindle lockbutton.
Check to ensure that the spindle lockbutton has
disengaged.
6.3.2 Using the Kwik-Lock nut to fit cutting discs
(only for the DCH 230)
NOTE
The Kwik-Lock nut may be used instead of the standard clamping nut. No tools are then required for fitting/changing the cutting discs.
NOTE
The arrow on the upper surface of the nut must be within
the index marks. If the arrow is not within the index marks
when the nut is tightened it will be impossible to release
7.
8.
9.
Disconnect the supply cord plug from the power
outlet.
Clean the clamping flange and the quick release
clamping nut.
CAUTION The clamping flange is equipped with
an O-ring. If this O-ring is missing, the clamping
flange must be replaced.
Place the 41 mm dia. clamping flange on the spindle
so that it cannot rotate.
Place the cutting disc on the centering collar of the
clamping flange.
Screw the quick-release clamping nut onto the spindle until it contacts the cutting disc (the side with the
lettering should be visible after the nut is screwed
on).
CAUTION Do not press the spindle lockbutton
before the drive spindle has stopped rotating.
Press the spindle lockbutton and hold it in this
position.
Turn the cutting disc firmly by hand in a clockwise direction until the quick-release clamping nut
is tightened securely.
Release the spindle lockbutton.
Check to ensure that the spindle lockbutton has
disengaged.
6.3.3 Fitting cutting discs to the DCH 180‑SL
slitting tool 8
NOTE
Use of the Kwik-Lock nut with the DCH 180‑SL slitting
tool is not permissible.
1.
Disconnect the supply cord plug from the power
outlet.
2. Press the catch and pivot the hood extension down
and away from the hood.
3. Place the first diamond disc on the spindle extension.
4. Fit the spacer ring corresponding to the desired
slitting width.
5. Fit the second diamond cutting disc.
NOTE To achieve the maximum slitting width, all
spacer rings have to be positioned between the
diamond discs.
NOTE All the spacer rings thus have to be fitted.
6. CAUTION Do not press the spindle lockbutton
before the drive spindle has stopped rotating.
Press the spindle lockbutton and hold it in this
position.
7. Screw the clamping nut onto the drive spindle and
tighten it securely with the wrench.
8. Release the spindle lockbutton.
9. Check to ensure that the spindle lockbutton has
disengaged.
10. Press the catch to release the hood extension and
allow it to be pushed in and, at the same time, set
to the desired cutting depth.
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6.4 Removing the cutting disc from the tool
To remove the cutting disc from the tool, follow the
instructions for fitting the disc but carry out the steps in
the reverse order.
en
6.5 Instructions for converting the DCH 230 to a
DCH 180‑SL 9
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Disconnect the supply cord plug from the power
outlet.
To remove the depth gauge (optional), press the
catch and pivot the combined hood extension /
depth gauge out of the hood.
Press the spindle lockbutton.
Use a wrench to release and remove the M 14
clamping nut or remove the Kwik-Lock nut by hand.
Remove the diamond cutting disc.
Remove the 41 mm diameter clamping flange from
the spindle.
Use the 6 mm hex. socket wrench to release the
hex. socket screw securing the hood.
Rotate the DCH-EX 230 guard (hood) and pull it
away from the tool.
Check that the set of parts required for the conversion is complete (DCH‑EX 180‑SL slitting hood,
spindle extension, M 6 x 65 screw, 5 spacer rings
(3 mm, 6 mm 2 x 13 mm, 21 mm) M 14 clamping
nut).
Fit the DCH‑EX 180‑SL slitting hood onto the spindle
collar.
Rotate the guard (hood) into the desired position.
Use the hex. socket wrench to tighten the hex.
socket screw.
Press the catch and pivot the hood extension down
and away from the hood.
Place the spindle extension on the spindle so that it
cannot rotate.
Fit the M 6 x 65 screw through the spindle extension.
Press the spindle lockbutton.
Secure the spindle extension on the spindle with the
M 6 x 65 screw and tighten the screw with the 10
mm AF wrench.
Release the spindle lockbutton.
Check to ensure that the spindle lockbutton has
disengaged.
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20. From here on, follow the instructions for fitting the
cutting discs to the slitting tool.
NOTE The procedure for fitting the cutting discs is
described in the section “Fitting cutting discs to the
DCH 180‑SL slitting tool”.
6.6 Instructions for converting the DCH 180‑SL to a
DCH 230
Items required for the conversion: DCH‑EX 230 hood,
41 mm dia. clamping flange with O-ring, M 14 clamping
nut; 24 mm AF / 10 mm AF wrench, 6 mm hex. socket
wrench, diamond cutting discs max. 230 mm diameter.
1. Disconnect the supply cord plug from the power
outlet.
2. Press the catch on the DCH‑EX 180‑SL hood and
pull out the depth gauge.
3. Press the spindle lockbutton.
4. Use a 24 mm AF wrench to release the 41 mm
diameter clamping nut and remove the nut from the
spindle extension.
5. Release the spindle lockbutton.
6. Remove all spacer rings and both diamond cutting
discs from the spindle extension.
7. Use the 10 mm AF wrench to release the M 6 x 65
screw and remove the screw.
8. Remove the spindle extension from the spindle.
9. Use the hex. socket wrench to release the slitting
hood.
10. Rotate the slitting hood on the spindle collar and
remove it.
11. The procedure for fitting the DCH‑EX 230 guard
and the corresponding cutting disc is described in
the sections “Fitting and adjusting the guard” and
“Fitting cutting discs”.
6.7 Storing and transporting cutting discs
CAUTION
Remove the cutting disc from the power tool after
use. The cutting disc may suffer damage if the power
tool is transported with the disc fitted.
CAUTION
Store the cutting disc in accordance with the manufacturer’s recommendations. Incorrect or careless storage may damage the cutting disc.
7 Operation
chitect, or person in charge of the building project
before beginning the work.
7.1 Working with the power tool
Take care to ensure that the closed side of the guard is
always positioned toward the operator’s body.
Adjust the position of the guard (hood) to suit each cutting
application.
DANGER
Hold the power tool by insulated gripping surfaces
only, when performing an operation where the cutting
accessory may contact hidden wiring or its own cord.
Cutting accessory contacting a "live" wire may make
exposed metal parts of the power tool "live" and could
give the operator an electric shock.
WARNING
Do not use the power tool if it starts with a jolt.This
may be an indication that the electronic control unit is
defective. Have the power tool repaired by Hilti Service
immediately.
7.2 TPS theft protection system (optional)
NOTE
The power tool may be equipped with the optional theft
protection system. If the power tool is equipped with this
feature, it can be unlocked and made ready for operation
only with the corresponding TPS key.
7.2.1 Unlocking the power tool
1.
2.
CAUTION
The power tool and the cutting operation generate noise.
Wear ear protectors. Exposure to noise can cause hearing loss.
CAUTION
The cutting operation may cause dangerous splinters.
Splintering material presents a risk of injury to the eyes
and body. Wear eye protection and a hard hat.
Plug the supply cord into the power outlet. The
yellow theft protection indicator LED blinks. The
power tool is then ready to receive the signal from
the TPS key.
Hold the TPS key against the lock symbol. The
power tool is unlocked as soon as the yellow theft
protection indicator LED no longer lights.
NOTE If, for example, the electric supply is briefly
interrupted due to a power failure or disconnected
when moving to a different workplace, the power
tool remains ready for operation for approx. 20 minutes. In the event of a longer interruption, the TPS
key must be used again to unlock the power tool.
7.2.2 Activation of the tool’s theft protection
system
CAUTION
The direction of advance is important. The power
tool must always be advanced with the guide wheels
ahead and in contact with the material being cut.
There is otherwise a risk of kick-back.
NOTE
Further detailed information on activation and use of the
theft protection system can be found in the operating
instructions for the theft protection system.
WARNING
The electric supply voltage must comply with the
information given on the type identification plate on
the power tool.
1.
2.
CAUTION
The cutting disc and parts of the power tool may get hot
through use. There is a risk of burning your hands. Wear
protective gloves. Touch the power tool only at the
grips provided.
4.
5.
CAUTION
Use clamps or a vice to hold the workpiece securely.
WARNING
Slits cut in loadbearing walls of buildings or other structures may influence the statics of the structure, especially
when steel reinforcing bars or load-bearing components
are cut through. Consult the structural engineer, ar-
7.3 Switching on
3.
Plug the supply cord into the power outlet.
Always hold the tool securely with both hands on
the grips provided.
Unlock the on / off switch by pressing the switch-on
interlock release button.
Press the on / off switch.
Reposition your thumb around the rear grip.
7.4 Switching off
Release the on / off switch.
The tool stops after the on / off switch is released.
The switch-on interlock is re-activated.
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en
7.5 Working with diamond cutting discs (DCH 230
and DCH 180‑SL) and synthetic resin-bonded
fiber-reinforced cutting discs (only DCH 230)
en
DANGER
To reduce the risk of kick-back, avoid bringing the
cutting tool into contact with the material in the area
indicated.
DANGER
Wherever possible, bring the guide wheels into contact with the workpiece before starting the cut. Take
extra care in situations where this is not possible or
where the cutting disc is inserted in an existing cut.
1.
2.
When cutting mineral materials, first bring the tool’s
guide wheels into contact with the object to be cut.
Allow the power tool to reach full speed.
3.
Apply pressure to the power tool so that the cutting
disc is pressed into the material slowly. This ensures
that particles and sparks generated by the cutting
operation are caught by the hood and extracted by
the dust removal system.
NOTE Apply moderate pressure, adjusting the rate
of advance to suit the material being cut.
NOTE The diamond disc may overheat and suffer
damage when cutting very hard mineral materials,
e.g. concrete with a high hard pebble content. A
trail of sparks right round the circumference of the
diamond cutting disc is a sure indication of this.
Should this occur, stop cutting and cool the disc by
allowing the tool to run under no load.
A drop in the rate of cutting progress can be an
indication of “blunt” (polished) diamond segments.
The segments can be resharpened by making a few
cuts in an abrasive material (Hilti sharpening plate
or sand-lime block).
7.6 Using a suitable vacuum cleaner for working on
mineral materials
NOTE
Please read the operating instructions for the vacuum
cleaner for information about disposal of the material
collected.
Dust can be kept to a minimum when working by using
a suitable vacuum cleaner (such as the Hilti VCD 50).
Use of a vacuum cleaner also helps to cool the segments
on the disc and thus reduces segment wear. In order to
avoid electrostatic effects, a vacuum cleaner equipped
with an antistatic hose should be used.
8 Care and maintenance
CAUTION
Disconnect the supply cord plug from the power outlet.
8.1 Care of the power tool
DANGER
Under extreme conditions, when used for working on
metal, conductive dust may accumulate inside the tool.
This may have an adverse effect on the tool’s protective
insulation. Under such conditions, the tool should be
plugged into a ground fault circuit interrupter (RCD)
and use of a stationary dust removal system and
8.2 Service indicator
NOTE
The power tool is equipped with a service indicator.
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frequent cleaning of the tool’s cooling air slots is
recommended.
The outer casing of the motor and the grips are made
from impact-resistant plastic. Parts of the grips have a
synthetic rubber covering.
Never operate the power tool when the ventilation slots
are blocked. Clean the ventilation slots carefully using
a dry brush. Do not permit foreign objects to enter the
interior of the power tool. Clean the outside of the power
tool at regular intervals with a slightly damp cloth. Do
not use a spray, steam pressure cleaning equipment or
running water for cleaning. This may negatively affect the
electrical safety of the power tool. Always keep the grip
surfaces of the power tool free from oil and grease. Do
not use cleaning agents which contain silicone.
LED indicators
Constant red light
End of service interval - servicing is due.
After the lamp lights for the first time,
the power tool may continue to be used
for several hours (switched-on running
time) before the automatic cut-out is activated. To ensure that the power tool
is always ready for use, it should be returned to Hilti for servicing in good time.
See section “Troubleshooting”.
Blinking red light
8.3 Maintenance
WARNING
Repairs to the electrical section of the machine may
be carried out only by trained electrical specialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts are
damaged or when the controls do not function faultlessly.
If necessary, the power tool should be repaired by Hilti
Service.
8.4 Checking the power tool after care and
maintenance
After carrying out care and maintenance, check that all
protective and safety devices are fitted and that they
function faultlessly.
9 Troubleshooting
Fault
Possible cause
Remedy
The power tool doesn’t start.
Interruption in the electric supply.
Plug in another electric appliance and
check whether it works.
Have checked by a trained electrical
specialist and replaced if necessary.
Use the TPS key to unlock the power
tool.
The supply cord or plug is defective.
The power tool has not been unlocked (tools with optional theft protection system).
The on / off switch is defective.
The power tool has been overloaded
(application limits exceeded).
The overheating protection system is
active.
Other electrical fault.
The power tool doesn’t achieve
full power.
The power tool doesn’t start
and the service indicator blinks
red.
The power tool doesn’t start
and the service indicator lights
red.
The power tool doesn’t start
and the theft protection system
indicator blinks yellow.
The electronic restart interlock is activated after an interruption in the electric supply.
The extension cord’s conductor cross
section is inadequate.
A fault has occurred in the power tool.
If necessary, the power tool should be
repaired by Hilti Service.
Use the right power tool for the job
(don’t use a low-powered tool for
heavy work).
Allow the power tool to cool down.
Clean the ventilation slots.
Have it checked by a trained electrical
specialist.
Switch the power tool off and on
again.
Use an extension cord with an adequate conductor cross section.
(Please refer to “Before use”.)
If necessary, the power tool should be
repaired by Hilti Service.
The carbon brushes are worn.
Have checked by a trained electrical
specialist and replaced if necessary.
The power tool has not been unlocked (tools with optional theft protection system).
Use the TPS key to unlock the power
tool.
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en
10 Disposal
en
Most of the materials from which Hilti machines or appliances are manufactured can be recycled. The materials must
be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for taking
back old machines and appliances for recycling. Ask Hilti customer service or your Hilti representative for further
information.
11 Manufacturer’s warranty
Hilti warrants that the tool supplied is free of defects in
material and workmanship. This warranty is valid so long
as the tool is operated and handled correctly, cleaned
and serviced properly and in accordance with the Hilti
Operating Instructions, and the technical system is maintained. This means that only original Hilti consumables,
components and spare parts may be used in the tool.
This warranty provides the free-of-charge repair or replacement of defective parts only over the entire lifespan
of the tool. Parts requiring repair or replacement as a
result of normal wear and tear are not covered by this
warranty.
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Additional claims are excluded, unless stringent national rules prohibit such exclusion. In particular, Hilti
is not obligated for direct, indirect, incidental or consequential damages, losses or expenses in connection with, or by reason of, the use of, or inability to
use the tool for any purpose. Implied warranties of
merchantability or fitness for a particular purpose are
specifically excluded.
For repair or replacement, send the tool or related parts
immediately upon discovery of the defect to the address
of the local Hilti marketing organization provided.
This constitutes Hilti’s entire obligation with regard to
warranty and supersedes all prior or contemporaneous
comments and oral or written agreements concerning
warranties.
Hilti Corporation
Printed: 07.07.2013 | Doc-Nr: PUB / 5127702 / 000 / 00
212023 / A2
212023
Hilti = registered trademark of Hilti Corp., Schaan
W 3492 | 1112 | 00-Pos. 3 | 1
Printed in Germany © 2012
Right of technical and programme changes reserved S. E. & O.
*212023*
LI-9494 Schaan
Tel.: +423 / 234 21 11
Fax:+423 / 234 29 65
www.hilti.com
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