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WFO 280
Bedienungsanleitung Schwingschleifer 1– 6
Operating instructions Orbital finishing sander 7–12
Mode d’emploi Ponceuse vibrante 13–18
Istruzioni d’uso Levigatrice orbitale 19–24
Gebruiksaanwijzing Vlakschuurmachine 25–30
Manual de instruções Lixadeira vibratória 31–36
Manual de instrucciones Lijadora orbital 37–42
Brugsanvisning Rystepudser 43–48
Käyttöohje Tasohiomakone 49–54
Bruksanvisning Planslipmaskin 55–60
Οδηγιες χρησεως Λειαντήρας έκκεντρης παλινδρμησης
61–66
Instrukcja obsługi
Szlifierka Oscylacyjna
67–72
Návod k obsluze
Vibrační bruska
73–78
79–84
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WFO 280 orbital finishing sander
Features
1 Grip
2 Ventilation slots
3 Thumbwheel for oscillation rate
pre-selection
4 ON/OFF switch
5 Lockbutton
6 Dust bag
7 Plastic slider
8 Clamp release lever
9 Sanding plate
10 Clamp
11 Screw for auxiliary handle
12 Auxiliary handle
13 Sanding sheet (Velcro-type attachment)
14 Sanding sheet
15 Adapter for extraction hose
16 Extraction hose
17 Screws for sanding plate
The accompanying list of safety precautions
and the applicable regulations issued by your
trade association must be observed.
1. Safety rules
1.1 General safety rules
-WARNING- Read all instructions!
Failure to follow all instructions listed below
may result in electric shock, fire and/or
serious injury. The term "power tool" in
all of the warnings listed below refers to
your mains operated (corded) power tool
or battery operated (cordless) power tool.
SAVE THESE INSTRUCTIONS
1.1.1 Work area
a) Keep the work area clean and well lit.
Cluttered and dark areas invite accidents.
b) Do not operate power tools in explo-
sive 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.
Dis-
tractions can cause you to lose control.
1.1.2 Electrical safety
a) Power tool plugs must match the out-
let. 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 approved for
outdoor use.
Use of a cord suitable for
outdoor use reduces the risk of electric shock.
1.1.3 Personal safety
a) 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 safety equipment. Always wear
eye protection.
Safety equipment such
as dust mask, non-skid safety shoes,
hard hat, or hearing protection used
for appropriate conditions will reduce
personal injuries.
c) Avoid accidental starting. Ensure the
switch is in the off position before
plugging in.
Carrying power tools with
your finger on the switch or plugging
in 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 foot-
ing 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 con-
nection of dust extraction and collection facilities, ensure these are connected and properly used.
Use of these
devices can reduce dust related hazards.
1.1.4 Power tool use and care
a) 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 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 mis-
Read the operating
instructions before use
Symbols
Return waste material for
recycling
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alignment 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 and in the manner intended for the particular type of power tool,
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.
1.1.5 Service
a) Have your power tool serviced by a
qualified repair person using only genuine replacement parts.
This will ensure
that the safety of the power tool is maintained.
1.2 Additional safety precautions
1.2.1 Personal safety
a) Wear ear protection.
Excessive noise
may lead to a loss of hearing.
b) Use the auxiliary handle supplied with
the tool.
Loss of control of the tool
may lead to injury.
c) Breathing protection must be worn
when the tool is used without a dust
removal system for work that creates
dust.
d) To avoid tripping and falling when
working, always lead the sypply cord,
extension cord and dust extraction
hose away tho the rear.
e) Dust from material such as paint con-
taining lead, some wood species, minerals and metal may be harmful. Contact with or inhalation of the dust may
cause allergic reactions and/or respiratory diseases to the operator or
bystanders. Certain kinds of dust are
classified as carcinogenic such as oak
and beech dust especially in conjunction
with additives for wood conditioning
(chromate, wood preservative). Material containing asbestos must only be
treated by specialists. Where the use
of a dust extraction device is possible it shall be used. To achieve a high
level of dust collection, use a suitable
vacuum cleaner of the type recommended by Hilti for wood dust and/or
mineral dust together with this tool.
Ensure that the workplace is well ventilated. The use of a dust mask of filter class P2 is recommended. Follow
national requirements for the materials you want to work with.
f) The tool is not intended for use by chil-
dren, by debilitated persons or those
who have received no instruction or
training.
g) Children must be instructed not to play
with the tool.
1.2.2 Power tool use and care
a) Secure the workpiece. Use clamps or
a vice to hold the workpiece in place.
The workpiece is thus held more securely than by hand and both hands remain
free to operate the tool.
b) In the event of a power faillure, switch
the tool off and unplug the supply cord.
This prevents inadvertent starting when
the power returns.
cb) Hold tool by insulated gripping sur-
faces when performing an operation
where the cutting tool may contact
hidden wiring or its own cord. Con-
tact with a “live” wire will make exposed
metal parts of the tool “live” and shock
the operator.
1.2.3 Electrical safety
a) Check the condition of the supply cord
and its plug connections and have it
replaced by a qualified electrician if
damage is found. Check the condition
of the extension cord and replace it if
damage is found. Do not touch the
supply in the event of it suffering damage while working. Disconnect the
supply cord plug from the socket
. Damaged supply cords and extension cords
present a risk of electric shock.
b) Dirty or dusty electric tools should
thus be checked at a Hilti service
center at regular intervals, especially
if used frequently for working on conductive materials. Dust (especially
dust from conductive materials) or
dampness adhering to the surface of
the tool may, under unfavorable conditions, present a risk of electric shock.
1.2.4 Work area
a) Ensure that the workplace is well lit.
b) Ensure that the workplace is well ven-
tilated.
Poorly ventilated workplaces may be
injurious to the health due to exposeure
to dust.
1.2.5 Personal protective equipment
The user and any other persons in the
vicinity must wear suitable eye protection, ear protection and protective gloves
when the tool is in use. Breathing protection must be worn if no dust removal
system is used.
Wear ear
protection
Wear
protective
gloves
Wear
breathing
protection
Wear eye
protection
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Power input: 350 W
Power output: 200 W
Stroke rate under nominal load: 3000–11000 min.
-1
Sanding plate: 223 x 112 mm
Eccentricity: 1.3 mm
Oscillation range: 2.6 mm
Extraction adapter outside dia.: 30 mm for hose adapter
Weight as per EPTA-Procedure 01/2003: 2.8 kg
Protection class as per EN 60745 Z / II
NOTE
The vibration emission level given in this information sheet has been measured in
accordance with a standardised test given in EN 60745 and may be used to compare
one tool with another. It may be used for a preliminary assessment of exposure. The
declared vibration emission level represents the main applications of the tool. However if the tool is used for different applications, with different accessories or poorly
maintained, the vibration emission may differ. This may significantly increase the exposure level over the total working period. An estimation of the level of exposure to vibration should also take into account the times when the tool is switched off or when it is
running but not actually doing the job. This may significantly reduce the exposure level
over the total working period. Identify additional safety measures to protect the operator from the effects of vibration such as: maintain the tool and the accessories, keep
the hands warm, organisation of work patterns.
Noise and vibration information (measured in accordance with EN 60745):
Typical A-weighted sound power level 94 dB (A)
Typical A-weighted emission sound pressure level 83 dB (A)
For the given sound power level as per EN 60745, the tolerance is 3 dB.
Wear ear protection!
Triaxial vibration value (vibration vector sum)
Surface grinding (a
h
) 2.5 m/s
2
Uncertainty (K) for triaxial vibration value 1.5 m/s
2
Right of technical changes reserved
2. Technical data
3. Safety instructions
■ The following instructions must be
observed. Incorrect operation may present a risk of damage or injury.
Never operate the machine in a damp environment. The machine must not be allowed
to become damp.
Wear a dust mask and safety goggles when
sanding materials that produce dust hazardous
to health. Contact with and inhalation of harmful or toxic substances originating from the
sanding of materials such as coatings containing lead or from certain types of wood or
metals presents a hazard to the operator of
the electric tool and to other persons in the
vicinity. Do not sand or cut materials containing asbestos. Do not use the sander in
rooms or areas where there is a risk of explosion.
The use of accessories not designed
for this machine may cause damage to it and increase the risk of accidents.
■ Note: Observe the safety precautions.
■ Do not use this orbital finishing sander
in any way other than as described in these
operating instructions.
■ Use the sander for dry sanding only.
■ Always guide the supply cord away to the
rear of the machine.
■ Always use both hands to guide the
machine.
■ Do not touch the sanding sheet or the sanding plate while the machine is in operation.
■ In order to achieve good sanding performance and to ease the load on the machine,
ensure that the sanding sheets used are in
good condition.
■ Trouble-free operation of the machine can
be ensured only when Hilti original accessories are used.
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Replacing the clamping bar (fig.3)
■ Disconnect the supply cord plug from
the mains socket before beginning any
work on the machine.
➀ Release the clamping bar by lifting both
rounded ends 8. ➁ Pull the clamping bar for-
wards, ➂ lift it slightly, ➃ press both ends
together using the thumb and index finger
and ➄ pull the clamping bar forwards out of
the casing of the machine.
To fit a new clamping bar, repeat these steps
in the reverse order.
Replacing the sanding plate (fig.4)
Use a Torx-type wrench or screwdriver to
remove the 8 screws with combination Torxtype/cross-recess heads 17 and lift away the
sanding plate.
Position the required sanding plate on the
machine and insert and tighten the 8 screws.
Operation
■ Hold the machine securely and maintain a secure stance.
The mains supply voltage must correspond
to the information printed on the rating plate.
Switching the machine on / off
■ Ensure that the machine is switched off
before connecting the supply cord plug to
the mains supply.
Switching on: Depress the ON/OFF switch
4 and hold it in the depressed position.
Switching off: Release the ON/OFF switch
4
Continuous operation
Switching on: Depress the ON/OFF switch
10
4. Correct use
The machine is designed for working on the
surface of materials such as wood, paint, lacquer, filler, metal and plastic. The user of the
machine carries the responsibility for any
damage caused by misuse, e.g. carrying the
machine by the supply cord, pulling the plug
out of the socket by pulling on the supply cord
or use of the wrong sanding sheets. The list
of safety precautions and generally accepted
accident prevention regulations for working
with electric tools must be observed.
5. Using the sander
Fitting sanding sheets with Velcro-type
attachment pads (fig.1).
■ Disconnect the supply cord plug from
the mains socket before beginning any
work on the machine.
The Velcro-type attachment pads
enable sanding sheets to be changed
quickly, without the use of additional tools.
Clean dust and dirt from the sanding plate 9
before fitting a new sanding sheet. When fitting a sanding sheet, check that the perforations in the sheet are in alignment with the
holes in the sanding plate.
Always ensure that the clamping bar is in the
closed position when the machine is in use.
If the clamping bar is loose, it may cause damage to the casing of the machine
■ Use only original Hilti sanding sheets with
Velcro-type attachment pads.
Fitting sanding sheets without Velcro-type
attachment pads (using the clamping bar)
(fig .2)
Release the clamping bar by lifting
both rounded ends 8. Remove the
old sanding sheet and insert a new
sheet. Push the clamping bar 10 down so
that the sanding sheet is held in place. Make
sure that the clamping lever is engaged at
both sides.
When fitting a sanding sheet, check that the
perforations in the sheet are in alignment with
the holes in the sanding plate.
4 and press the lockbutton 5 while the switch
is depressed.
Switching off: Press and release the ON/OFF
switch 4
Oscillation rate pre-selection
The required rate can be pre-selected by turning the thumbwheel 3.
1 ➡ 6
low high
The pre-selected oscillation rate remains
almost constant, even under load, thanks to the
machine's built-in electronics.
The optimum oscillation rate depends on the
material being sanded and should be determined
by conducting tests. (Please refer to the information provided with the sanding sheets and
the applications table.)
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8. Care, maintenance and
service
■ Always disconnect the supply cord
plug from the mains socket before beginning work on the machine.
■ Keep the machine and the ventilation slots
2 clean at all times.
■ The machine is greased adequately by
the manufacturer during assembly. It is recommended that the machine is inspected at
a Hilti Service Centre after a long period of
heavy use. This will increase the machine's
life expectancy and avoid unnecessary repair
costs.
■ When used under extreme conditions,
heavy dirt and dust deposits may form in the
interior of the machine. In such cases, the
use of a dust extraction system and a ground
fault interrupter (residual current device) is
recommended. The machine should also be
cleaned more frequently.
■ Repairs may be carried out only by trained
electrical specialists.
CAUTION
Keep the power tool, especially its grip surfaces, clean and free from oil and grease.
Do not use cleaning agents which contain silicone.
The outer casing of the tool is made from
impactresistant plastic. Sections of the
grip are made from a synthetic rubber
material. Never operate the 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 tool. Clean the outside of the
6. Dust extraction
The dust extraction system makes it easy to
dispose of sanding dust, reduces the amount
of dust in the atmosphere and generally prevents the spread of large amounts of dust. Connect and use a suitable external extraction system before beginning long periods of sanding on
wood or materials that produce hazardous dust.
Use may be made of one of two possible
dust extraction systems.
1. The built-in dust extraction system with
dust bag (fig.5)
● Pull out the plastic slider 7 (located on the
underside of the grip) as far as it will go before
fitting the dust bag 6.
Fit the dust bag by pulling it over the dust
extraction connector. Ensure that the plastic slider engages with the tab provided on
the dust bag.
2. Using an external dust extraction system
(fig.6)
The extraction adapter 15 must be fitted
before connecting an external extraction system.
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 tool.
9. Copyright
The information contained in these operating
instructions is protected by copyright and
remains the property of the Hilti Corporation,
FL-9494 Schaan, Principality of Liechtenstein. These operating instructions are intended for the use of the owner/operator and
his/her personnel only.
Copying, publication or any other form of
distribution of the information and instructions contained, in whole or in parts, is strictly prohibited.
Violation of this copyright may lead to prosecution.
7. Using the sander
■ Disconnect the supply cord plug from
the mains socket before beginning any
work on the machine.
Sanding
The sanding finish and the speed of material removal is determined by the sanding
sheet (grain and quality), speed setting and
the pressure applied to the sander. Switch
the machine on before bringing it into contact
with the workpiece. Position the machine on
the surface to be sanded so that the entire
sanding sheet surface is in contact with the
workpiece. Apply slight pressure to the
machine while moving it over the workpiece.
Auxiliary grip
The auxiliary grip 12 allows the sander to be
held comfortably and permits even distribution of the force applied to the machine,
particularly when a high rate of removal is
desired. Use the internal hex. socket wrench
to attach the auxiliary grip 12 to the sander.
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12. EG declaration of conformity (original)
Description: Orbital finishing sander
Serial no.: 000000000–999999999
Designation: WFO 280
Year of design: 1998
We declare, on our sole responsibility, that this product complies with the following
directives and standards: 2004/108/EC, 2006/42/EC, EN 60745-1, EN 60745-2-4, EN
ISO 12100, 2011/65/EU.
11. Manufacturer's warranty
– tools
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.
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 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.
10. Disposal
Most of the materials from which
Hilti power tools are manufac-
tured 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 your old electric tools for recycling. Please ask your Hilti customer service department or Hilti sales representative for further information.
Only for EU countries
Disposal of electric tools together with
household waste is not permissible!
In observance of European Directive on
waste electrical and electronic equipment
and its implementation in accordance with
national law, electric tools that have reached
the end of their life must be collected separately and returned to an environmentally compatible recycling facility.
Hilti Corporation, Feldkircherstrasse 100, FL-9494 Schaan
Paolo Luccini Jan Doongaji
Head of BA Quality & Process Management Ececutive Vice President
BA Electric Tools & Accessories BU Power Tools & Accessories
01/2012 01/2012
Technical documentation filed at:
Hilti Entwicklungsgesellschaft mbH
Zulassung Elektrowerkzeuge
Hiltistrasse 6
86916 Kaufering
Deutschland
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Hilti = registered trademark of Hilti Corp., Schaan W 2232 0213 10-Pos. 1 1 Printed in Liechtenstein © 2013
Right of technical and programme changes reserved S. E. & O.
Hilti Corporation
FL-9494 Schaan
Tel.: +423 / 234 21 11
Fax: +423/23429 65
www.hilti.com
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