Lagler SINGLE User guide

SINGLE - THE SINGLE-DISC SANDING MACHINE
SINGLE
English / Englisch
Operation,
Maintenance, Safety
Translation of the original operating instructions
for the single-disc sanding machine
00.850.20.002 01.02.2013 *00.850.20.002*

SINGLE 01.02.2013
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SINGLE ASSEMBLIES
Fig. 1 Assemblies of the SINGLE single-disc sanding machine
Cable holder
2-handed safety operating lever (ON/OFF)
Adjusting lever
Handle with stepless adjustment of the guide tube
Drive motor
Sanding plate
Motor cover
Guide tube
Wheel
Dust extraction socket with cap
Rubber buffer
Control cable connector
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1 Introduction.....................................................................................................................................................................4
1.1 Features of the machine ................................................................................................................................................4
1.2 Description of the machine ...........................................................................................................................................4
1.3 Intended use of the machine.........................................................................................................................................4
1.4 Danger warnings ............................................................................................................................................................5
1.5 Safety devices.................................................................................................................................................................6
2 Technical data.................................................................................................................................................................6
3 Getting started ................................................................................................................................................................8
3.1 Preparing the machine for operation ...........................................................................................................................8
3.2 Connecting the mains cable..........................................................................................................................................9
3.3 Starting the machine......................................................................................................................................................9
3.4 Switching off the machine...........................................................................................................................................10
4 Working with the SINGLE ............................................................................................................................................11
4.1 General application tips...............................................................................................................................................11
4.2 Changing the sanding plate.........................................................................................................................................11
4.3 Changing the sanding disc ..........................................................................................................................................12
4.4 Adjusting and replacing the cable holder..................................................................................................................14
4.5 Attaching an external vacuum cleaner......................................................................................................................14
4.6 Attaching the fluffy sealing strip as protection against dust...................................................................................15
5 Transport and storage..................................................................................................................................................16
5.1 Dismantling and assembling the machine .................................................................................................................16
5.2 Storage ..........................................................................................................................................................................16
6 Maintenance and replacement of wearing parts .....................................................................................................17
6.1 Cleaning and care instructions...................................................................................................................................17
6.2 Replacing the plate mounting and the shock absorber............................................................................................17
6.3 Replacing the wheels...................................................................................................................................................19
6.4 Replacing the centering dome on the sanding plate................................................................................................19
7 Regular maintenance and testing in accordance with accident prevention regulations ....................................20
8 Troubleshooting ............................................................................................................................................................21
9 General safety remarks................................................................................................................................................22
10 Circuit diagrams............................................................................................................................................................26
11 Spare parts....................................................................................................................................................................28
12 Service passport...........................................................................................................................................................39
13 EU Declaration of conformity ......................................................................................................................................40
CONTENTS
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INTRODUCTION
Introduction
1.1 FEATURES OF THE MACHINE
Fig. 1 (page 2) shows the most important assemblies which make
up the SINGLE. We recommend that you take some time to become
familiar with the machine.
1.2 DESCRIPTION OF THE MACHINE
The SINGLE single-disc sanding machine operates with a sanding
plate to which Velcro-backed sanding discs can be attached. Of
course, the traditional type of sanding disc with a fastening screw
can also be used on the machine. The work zone is covered by
the machine housing. In the machine housing, the electric motor
is mounted vertically together with the gear. It is protected from
sanding dust by the motor cover. The plug for connection to the
mains is located on the machine housing. The motor switch with
the switch positions ON/OFF is located in the handle at the top end
of the guide tube. The machine is moved with this handle. At the
back of the machine are two wheels which the machine runs on
when it is moved.
The SINGLE single-disc sanding machine is intended for dry use
only. Never attempt to use the SINGLE for any type of wet operation
(risk of fatal accidents)!
1.3 INTENDED USE OF THE MACHINE
The SINGLE single-disc sanding machine is suitable for sanding
wooden and cork floors and for work on floor underlays in the pro-
fessional and DIY rental sectors. It can also be used for spreading
care products and cleaning agents and for polishing floors.
Any application other than that described here is inadmissible
without the consent of the manufacturer. Never use for wet op-
eration!
You are now the owner of a high-quality
product manufactured by LÄGLER®. We
wish you every success with the SINGLE.
This machine has been manufactured using
state-of-the-art production techniques. All
LÄGLER®products are subjected to thorough
controls before they leave the factory.
Please read right through these operating
instructions before working with the SINGLE
for the first time. The operating instructions
contain important information relating to
working safety and will answer many of
your questions, permitting you to work con-
fidently and safely with the machine. If you
require information which is not provided
in these instructions, refer to your sanding
instructions or consult our Customer Ser-
vices Department, which will be pleased to
advise you. Our fully trained and qualified
service technicians are very familiar with
the SINGLE and will be able to provide any
assistance you may need.
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INTRODUCTION
1.4 DANGER WARNINGS
Please read through the danger warnings carefully and instruct your
employees or colleagues accordingly. Failure to comply with this
requirement could result in dangerous situations or injury.
In order to avoid injury, the machine may only be switched on when
it is in the working position, the sanding plate is placed flat on the
floor and the dust extraction socket is closed (please see Section
3.3, Starting the machine).
Use only tools, accessories and spares intended for the SINGLE and
supplied by LÄGLER®. No warranty cover exists for parts sourced
from other manufacturers. Use of other parts can result in dam-
age to the machine, to the floor you are sanding, or injury to the
machine operator.
Incorrect transportation can result in damage to the equipment.
Keep well away from sources of fire.
Do not smoke when there is dust in the atmosphere (e.g. while
working with the machine or emptying out the dust)
This could cause a dust explosion.
The mains connection cable must be kept out of the work area in
order to prevent mechanical or electrical damage.
In order to prevent any chance of the machine being unintentionally
started up, the power supply must be cut off when the machine is
switched off, by unplugging from the mains.
To protect the equipment against current faults, we advise using
a DI safety plug (For part nos. please see Section 11, Spare parts).
When the appliance is operated correctly with a vacuum cleaner
(please see Section 4.5, Attaching an external vacuum cleaner),
the prescribed dust limit values are adhered to. When the appli-
ance is used without a vacuum cleaner connected, a respiratory
protection mask P3 must be worn (For part nos. please see Section
11, Spare parts).
Never use the sanding machine for any type
of wet operation!
When the machine is switched on, there is
still a serious residual risk involved, despite
all the safety devices fitted. For this reason,
never reach into rotating tools or machine
parts!
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TECHNICAL DATA
Technical data
1.5 SAFETY DEVICES
The following parts of the machine are safety devices and must
accordingly be kept in perfect working order:
Machine housing = Protection from sanding plate
and sanding disc
Dust extraction socket with cap = Protection from sanding plate
and sanding disc
Motor cover = Protection from live parts
Handles on the guide tube = Protection from live parts
Manufacturer....................................................... Eugen Lägler GmbH
Machine type....................................... Single-disc sanding machine
Serial number ............................................................. see rating plate
Year of construction................................................... see rating plate
Motor type.......................................................single-phase AC motor
Voltage .......................................................................................... 230 V
Frequency ...........................................................................50 Hz (CPS)
Output..........................................................................................1.2 kW
Fusing ..............................................................................................16 A
Insulation class ...................................................................................B
Protection rating ...........................................................................IP 54
Safety devices.......................................................no-voltage release
thermal switch as overload
protection in the motor
Starting capacitor ........................................................................ 60 µF
Operating capacitor..................................................................... 40 µF
Sanding plate diameter .................................................. 406 mm (16“)
Sanding plate speed .....................................approx. 180 1/min (rpm)
Total height without guide tube ................................. 265 mm (10 ½“)
Total length without guide tube ................................. 615 mm (24 ¼“)
Height above sanding plate ........................................... 46 mm (1 ¾“)
Total width.................................................................. 435 mm (17 1/8“)
Weight of the machine with sanding plate..................45 kg (99 lbs.)
Workplace-related noise emission values
(Measuring point at the operator’s ear; 1.5 m above floor level)
parquet sanding operation, sanding oak parquet
Sanding paper grain size 60................................................77 dB(A)
Vibration total value ahv .......................................................< 2.5 m/s²
(measured at the handle)
Note on noise emission:
The specified values are emission values
and are not required to constitute safe
workplace levels. Although a correlation
does exist between emission and imission
levels, it is not possible to conclude on this
basis whether additional precautionary
measures are necessary. Factors which
influence the current imission level existing
at the workplace include the duration of
exposure, the character of the workroom,
other noise sources such as the number of
machines, and other adjacent machining
processes. The admissible workplace
values can also vary from one country
to another. However, this information is
provided in order to enable the user to better
estimate the level of danger and risk.
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TECHNICAL DATA
Intended applications
Sanding wooden and cork floors, work on floor underlays and
spreading care products and cleaning agents.
Basic equipment
Machine ready for operation, extension cable 3 x 2.5 sq. mm - 10 m
long, hexagonal socket wrench sizes 5 and 6, respiratory protection
mask (P3) and operating manual.
Optional equipment
Universal sanding plate, vacuum cleaner (FESTOOL mobile extractor
CTM44E230V), pocket for ear plugs, DI safety plug.
Wearing parts
To ensure that the machine works safely and to maximum effect,
please check the condition of the wearing parts listed below at
regular intervals:
• Replace Velcro attachment disc on the sanding plate if worn
or damaged
• Replace paper retaining disc if worn or damaged
• Replace screw for attaching paper disc if worn or damaged
• Replace wheels if worn or damaged
• Replace extension cable if damaged
• Replace motor cable if damaged
• Replace buffer if damaged
• Replace fluffy sealing strip if damaged
Note:
The motor data mentioned above relates
to machines used in the Federal Republic
of Germany. Different data may apply to
exported machines. This is indicated on the
motor rating plate.
The relevant article numbers of the optional
accessories and wearing parts are provided
in the spare parts lists in Section 11.
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GETTING STARTED
Getting started
This section describes the procedure for commissioning the SINGLE
on site. In order to exclude the possibility of damage and malfunc-
tions, it is essential to proceed in the sequence outlined below.
Before working with the machine for the first time, operating staff
must be adequately instructed.
3.1 PREPARING THE MACHINE FOR OPERATION
1Unpack the machine carefully. Please ensure that packaging
materials that are no longer needed are disposed of respon-
sibly, in an environmentally-friendly way.
For safe dispatch of the machine at a subsequent date, the
original packaging should be retained and used again.
2Attach the sanding disc you need to the sanding plate (Sec-
tion 4.3, Changing the sanding disc).
3Insert the motor cable in the lower cable holder on the guide
tube (Fig. 2).
4Pull the adjusting lever on the handle towards you to release
the lock of the guide tube, and push the guide tube into and
past the vertical position until it reaches the mechanical stop
(Fig. 3).
5Release the adjusting lever so that the guide tube can engage
again. Carefully tilt the machine backwards on the wheels. As
you do so, steady the machine with your foot to stop it rolling
away (Fig. 4). Please ensure that the machine is stable before
commencing work!
6Push the sanding plate centrally onto the gear mount and turn
it anti-clockwise until it reaches the mechanical stop (Fig. 5).
7Carefully tilt the machine back up over the wheels and onto
the sanding plate. As you do so, steady the machine with your
foot to stop it rolling away (Fig. 6).
Fig. 2 Insert the motor cable in the lower cable holder
on the guide tube.
Fig. 3 Pull the adjusting lever to release the lock and
raise the guide tube until it reaches the mechani-
cal stop.
Fig. 4 Release the adjusting lever and carefully tilt the
machine backwards. Steady the machine with
your foot to stop it rolling away and ensure that
it is stable!
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GETTING STARTED
8The height of the guide tube can be adjusted, allowing you to
work with the SINGLE as comfortably as possible. To make this
adjustment, pull the adjusting lever towards you (Fig. 3). This
releases the lock on the guide tube so that it can be moved
up or down. Choose the position that feels most comfortable
to you (Fig. 7) and release the adjusting lever again.
NOTE:
This adjustment must never be made when the machine is
switched on!
3.2 CONNECTING THE MAINS CABLE
1Push the socket onto the plug on the motor cable and insert
the extension cable in the upper cable holder on the guide
tube (Fig. 8).
2Plug the extension cable plug into an adequately fused mains
socket with protective contacts or into the socket of a sepa-
rate vacuum cleaner (please see also Section 4.5, Attaching
an external vacuum cleaner).
3.3 STARTING THE MACHINE
NOTE:
Please read this section very carefully. It contains important
safety instructions!
NEVER switch the machine unless:
• There is a sanding plate mounted (Fig. 9).
• The machine is in the working position and the sanding plate
is placed flat on the floor (Fig. 10).
• The dust extraction socket is closed either with its cap or a
vacuum cleaner hose (Fig. 12, please see also Section 4.5,
Attaching an external vacuum cleaner).
If these conditions are not met, the sanding plate can come free
of its mount and parts or fingers can catch on the rotating sanding
plate, resulting in damage or injury!
Fig. 5 Push on the sanding plate and turn it anti-clock-
wise until it reaches the mechanical stop.
Fig. 6 Tilt the machine back up, holding it steady with
your foot to stop it rolling away.
Fig. 7 Set the handle to a position that feels comfortable
to you.
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GETTING STARTED
For safety reasons, the machine CANNOT be switched on:
• If the guide tube is in a VERTICAL POSITION, since this makes
the machine very difficult to control (Fig. 11).
• UNLESS both start levers on the handle are pulled AT THE
SAME TIME. Holding the machine steady with both hands ena-
bles you to control the machine properly when it is switched
on, despite the motor starting torque.
Professional tip:
To start up the machine with almost no jerking movement, we
recommend lifting the machine VERY SLIGHTLY at the handle
immediately after you switch it on.
Before switching on the machine, ensure that:
• the sanding plate is placed flat on the floor and
• the guide tube is not in a vertical position and
• the dust extraction socket is closed either with its cap or with
a vacuum cleaner hose!
When you have made these checks, the SINGLE can be started!
Pull both the start levers AT THE SAME TIME and hold the handle
tight with both hands (Fig. 12). The machine will start up.
Never allow the machine to run unattended, otherwise damage
or injury can occur!
Always pull the mains plug out of the socket once you have
finished working.
3.4 SWITCHING OFF THE MACHINE
To switch off the machine, release both the start levers but keep a
tight hold on the machine with both hands on the handle, until the
sanding plate has come to a complete standstill.
Never allow the machine to run unattended and always pull the
mains plug out of the socket once you have finished working.
Fig. 8 Insert the extension cable in the upper cable
holder on the guide tube.
Fig. 9 Never switch on the machine unless there is a
sanding plate mounted!
Fig. 10 Never switch on the machine unless it is in the
working position and the sanding plate is placed
flat on the floor!
Fig. 11 If the guide tube is in a vertical position, the
machine CANNOT be switched on!
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WORKING WITH THE SINGLE
Working with the SINGLE
For more information free of charge, please
apply to: within Germany
- Tel.: 0800 / 52 34 537
- Fax: 0800 / 48 66 353
within the USA
- Tel.: [phone]
or
- Tel.: 0049 - 7135 - 98 90-0
- Fax: 0049 - 7135 - 98 90-98
- e-mail: [e-mail]
- Internet: http://www.laegler.com
4.1 GENERAL APPLICATION TIPS
It is possible to avoid leaving deep sanding tracks caused by exces-
sively coarse abrasion grain size by initially selecting a fine grain
size for the first sanding process.
Carry out a test sanding process using a 50 or 60 grain size. If this
test is satisfactory and you envisage a good sanding result within
a reasonable period, it is more efficient to start the sanding work
off with these finer grain sizes. This is the best way to avoid leaving
deep sanding tracks caused by an excessively coarse grain size.
You can avoid creating sanding tracks from the previous grain size
used by adhering to the grain size sequence and not skipping more
than one grain size at a time.
After each sanding pass, vacuum the floor thoroughly. Keep the
machine’s wheels clean.
When changing to a new sanding disc, always start work in a less
well lit area of the room until the sanding disc loses its initial ag-
gressive sanding effect.
For other informative and important application tips, please refer
to the LÄGLER®application technology brochure „Sanding wooden
floors“!
4.2 CHANGING THE SANDING PLATE
1Switch off the machine.
2Pull the mains plug out of the socket.
3Pull the adjusting lever on the handle towards you to release
the lock of the guide tube, and push the guide tube into and
past the vertical position until it reaches the mechanical stop
(Fig. 13).
Fig. 12 Do not start the machine in this position unless
- the sanding plate is placed flat on the floor AND
- the dust extraction socket is closed either with
its cap or a vacuum cleaner hose!
Then pull both the start levers AT THE SAME TIME.
Fig. 13 Pull the adjusting lever to release the lock and
push the guide tube up until it reaches the me-
chanical stop.
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WORKING WITH THE SINGLE
4Release the adjusting lever so that the guide tube can engage
again. Carefully tilt the machine backwards on the wheels. As
you do so, steady the machine with your foot to stop it roll-
ing away (Fig. 14). Please ensure that the machine is stable
before commencing work!
5Turn the sanding plate clockwise and you can then remove
it from the machine.
6Push the other sanding plate centrally onto the gear mount
and turn it anti-clockwise until it reaches the mechanical stop
(Fig. 15).
7Carefully tilt the machine back up over the wheels and onto
the sanding plate. As you do so, steady the machine with your
foot to stop it rolling away (Fig. 16).
4.3 CHANGING THE SANDING DISC
Depending on the type of sanding process you wish to perform,
different abrasive grain sizes can be selected. In order to change
the abrasive, proceed as follows:
1Switch off the machine.
2Pull the mains plug out of the socket.
3Pull the adjusting lever on the handle towards you to release
the lock of the guide tube, and push the guide tube into and
past the vertical position until it reaches the mechanical stop
(Fig. 13).
4Release the adjusting lever so that the guide tube can engage
again. Carefully tilt the machine backwards on the wheels. As
you do so, steady the machine with your foot to stop it roll-
ing away (Fig. 14). Please ensure that the machine is stable
before commencing work!
4.3.1 CHANGING VELCRO-BACKED SANDING DISCS
5Pull the worn Velcro-backed sanding disc off the Velcro at-
tachment disc of the sanding plate (Fig. 17).
6Press on the sanding disc with the Velcro side against the
Velcro attachment ring of the sanding plate. As you do so,
please ensure that the sanding disc is attached to the sanding
plate as centrally as possible.
Fig. 14 Release the adjusting lever and carefully tilt the
machine backwards. Ensure that the machine is
stable!
Fig. 15 Push on the sanding plate and turn it anti-clock-
wise until it reaches the mechanical stop.
Fig. 16 Release the adjusting lever and carefully tilt the
machine back up.
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WORKING WITH THE SINGLE
7Carefully tilt the machine back up over the wheels and onto
the sanding plate. As you do so, steady the machine with your
foot to stop it rolling away (Fig. 16).
4.3.2 CHANGING CONVENTIONAL SANDING DISCS
NOTE:
So that sanding discs that are attached in the conventional way do
not come loose during sanding work (because of the direction in
which the plate rotates), the fastening screw for the paper retain-
ing disc has a LEFT-HANDED THREAD.
5To release the paper retaining disc, turn the screw
clockwise (LEFT-HANDED THREAD) with a hexagonal
socket wrench. As you do so, hold the sanding plate steady
(Fig. 18).
6Unscrew and remove the fastening screw completely. Remove
the paper retaining disc and the worn sanding disc from the
sanding plate and lay them to one side.
7Place a new sanding disc on the sanding plate and push the
fastening screw with paper retaining disc into the sanding
plate (Fig. 19).
8Use the hexagonal socket wrench to turn the fastening
screw anti-clockwise into the sanding plate (LEFT-HANDED
THREAD)! Please ensure that the sanding disc is attached to
the sanding plate as centrally as possible (Fig. 19).
9Tighten the fastening screw as tightly as you can by hand,
using the hexagonal socket wrench.
Only ever attach one sanding disc, otherwise the sanding results
will be unsatisfactory and the dust extraction system will not
function properly!
Fig. 17 Pull off the worn Velcro-backed sanding disc.
Fig. 18 Turn the screw for releasing the disc in a clock-
wise direction (it has a LEFT-HANDED THREAD)!
Fig. 19 Place the new sanding disc in the sanding plate
and screw it in place. Turn the screw anti-
clockwise to tighten (LEFT-HANDED THREAD)!
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WORKING WITH THE SINGLE
4.4 ADJUSTING AND REPLACING THE CABLE
HOLDER
4.4.1 ADJUSTING THE CABLE HOLDER
The cable holder positions can be adjusted individually along the
groove on the guide tube of the machine.
1Using a hexagonal socket wrench, slacken the screw in the
middle of the cable holder just enough to let you slide the
cable holder along the groove with the sliding block (Fig. 20).
2Slide the cable holder into the position you want it in and
tighten the screw again. As you do so, the sliding block turns
so that the cable holder is clamped in place (Fig. 20).
4.4.2 REPLACING THE CABLE HOLDER
1To remove or replace a cable holder, slacken the screw in the
middle of the cable holder. Do not remove the screw entirely
from the sliding block! You can now remove the cable holder
together with the sliding block (Fig. 21).
2To mount a cable holder, push the screw with its washer into
the hole on the cable holder and on the other side, screw the
sliding block loosely onto the screw.
3Push the sliding block into the groove on the guide tube and
tighten the screw. As you do so, the sliding block turns so
that the cable holder is clamped in place (Fig. 22).
4.5 ATTACHING AN EXTERNAL VACUUM CLEANER
We recommend attaching a FESTOOL mobile extractor CTM44E230V
as an external vacuum cleaner. This guarantees that the best pos-
sible dust removal results are achieved. The description below
applies only for vacuum cleaners of the type specified here.
NOTE:
Please comply with the safety specifications made by the vacuum
cleaner manufacturer and read through the operating instructions
for the vacuum cleaner carefully!
1Plug the mains plug of the SINGLE into the extension cable.
2Plug the extension cable plug into the socket on the vacuum
cleaner (Fig. 23).
Fig. 20 Release the screw, move the cable holder with the
sliding block and then tighten the screw again.
Fig. 21 Release the screw. Do NOT remove it completely,
and remove the cable holder WITH the sliding
block.
Fig. 22 Insert the sliding block in the groove on the guide
tube and tighten the screw.
Fig. 23 Push the extension cable plug into the socket on
the vacuum cleaner.
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WORKING WITH THE SINGLE
3Open the cap of the dust extraction socket on the machine
housing and push the vacuum cleaner hose into the connec-
tion piece (Fig. 24).
4Switch the vacuum cleaner to AUTO mode (Fig. 25). AUTO
mode means that the vacuum cleaner switches on and off
automatically when the SINGLE is switched on and off.
Professional tip:
To make work easier, you can attach the extension cable to the
suction hose of the vacuum cleaner with several cable binders.
In this way you can ensure that the cable will not get caught
up under the machine (Fig. 26). Use detachable cable binders
for this purpose.
5When the machine is ready for use as described in the pre-
ceding sections, you can start with the first sanding pass.
4.6 ATTACHING THE FLUFFY SEALING STRIP AS
PROTECTION AGAINST DUST
A fluffy sealing strip around the circumference of the machine im-
proves the dust extraction results by sealing off the gap between
the working area of the machine and the floor.
You should attach the strip to the machine so that when the sanding
plate is mounted, the strip is in contact with the floor right round
the circumference of the machine (Fig. 27).
Fig. 24 Open the cap and attach the hose to the SINGLE.
Fig. 25 Set the vacuum cleaner to the AUTO mode setting.
Fig. 26 Attach the extension cable to the vacuum cleaner
suction hose.
Fig. 27 Attach the fluffy sealing strip.
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TRANSPORT AND STORAGE
Transport and storage
5.1 DISMANTLING AND ASSEMBLING THE
MACHINE
For transportation, the machine can be dismantled into three parts:
the guide tube as one element, the sanding plate and the drive unit
(machine housing with motor). All parts must be adequately secured
against slipping while being transported in the delivery van etc.
1Switch off the machine and pull the extension cable out of
the socket.
2Take the motor cable and the extension cable out of the cable
holder on the guide tube.
3Remove the sanding plate (see Section 4.2, Changing the
sanding plate).
4Release the cable plug of the guide tube by turning the
threaded ring on the cable plug and pull out the plug (Fig. 28).
5Pull the adjusting lever on the handle towards you to release
the lock of the guide tube (Fig. 29) and push the guide tube
back into a horizontal position.
6Use a hexagonal socket wrench to release the four fastening
screws at the base of the guide tube. Steady the guide tube
with one hand as you do so (Fig. 30).
To reassemble the machine, mount the individual components again
in reverse order to that described above.
5.2 STORAGE
If you wish to keep the machine in storage for a protracted period,
ensure that it is kept dry and free of the influence of frost in a loca-
tion without excessive temperature fluctuations.
Professional tip
When the machine is out of use for extended
periods, you should remove the sanding
plate from the machine, otherwise the
weight of the machine can damage the
flexible underlay of the sanding plate.
Also, when the machine is out of use for
extended periods, you should place the
machine on the bottom part of the transport
packaging in which it is delivered.
Fig. 28 Disconnect the cable plug of the guide tube from
the machine housing.
Fig. 29 Pull the adjusting lever to release the lock on the
guide tube.
Fig. 30 Unscrew the guide tube.
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MAINTENANCE AND REPLACEMENT OF WEARING PARTS
Maintenance and replacement
of wearing parts
Periodically, but at the latest when you notice that damage has oc-
curred, a variety of maintenance procedures have to be performed.
For this work, always use original spare parts manufactured by
LÄGLER®. Work in a clean, well lit location and proceed in accord-
ance with these instructions.
For safety reasons, more extensive maintenance work, especially
on the electrical equipment, must be carried out by a qualified
specialist.
6.1 CLEANING AND CARE INSTRUCTIONS
Never use cleaning agents containing solvents.
Before starting work, you should perform the following care pro-
cedure in order to ensure that the machine is in full working order
and produces the customary high-quality sanding finish:
• Clean the machine’s wheels.
• Clean all dust or other residues off the moving parts at the
base of the guide tube.
• Carry out a visual inspection of the electrical equipment
(extension cable, plug, couplings).
6.2 REPLACING THE PLATE MOUNTING AND THE
SHOCK ABSORBER
Always use original LÄGLER®plate mountings and shock absorbers
(For part nos. please see Section 11, Spare parts).
1Switch off the machine and pull the extension cable out of
the socket.
2Pull the adjusting lever on the handle towards you to release
the lock of the guide tube, and push the guide tube into and
past the vertical position until it reaches the mechanical stop
(Fig. 31).
Fig. 31 Pull the adjusting lever to release the lock and
push the guide tube up until it reaches the me-
chanical stop.
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SINGLE 01.02.2013
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MAINTENANCE AND REPLACEMENT OF WEARING PARTS
3Release the adjusting lever so that the guide tube can engage
again. Carefully tilt the machine backwards on the wheels. As
you do so, steady the machine with your foot to stop it roll-
ing away (Fig. 32). Please ensure that the machine is stable
before commencing work!
4Release and remove the three screws that fasten the plate
mounting in place.
5Use two screwdrivers or something similar to lever the plate
mounting off the retaining pin.
6Remove the shock absorber (Fig. 33).
7Replace the parts that are damaged or worn.
8The gear of the SINGLE is maintenance-free and contains
a special oil. The incorrect volume of oil can cause severe
damage to the gear.
For this reason, NEVER open the oil drainage screws in the
motor shaft or in the gear cover (Fig. 34).
9To assemble, follow the instructions above in reverse order.
Please ensure that the pattern of holes on the shock absorber
and the plate mounting match the pattern on the gear output.
Fig. 32 Release the adjusting lever and carefully tilt the
machine backwards. Ensure that the machine is
stable!
Fig. 33 Replace the plate mounting and the shock ab-
sorber.
Fig. 34 The two screws with markings are oil drainage
screws. DO NOT UNSCREW THEM!
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SINGLE 01.02.2013
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MAINTENANCE AND REPLACEMENT OF WEARING PARTS
6.3 REPLACING THE WHEELS
Always use original LÄGLER®wheels (For part nos. please see
Section 11, Spare parts).
1Switch off the machine and pull the extension cable out of
the socket.
2Use a suitable pair of circlip pliers to remove the retaining
ring from the wheel axle. Remove the washer and the wheel
(Fig. 35).
3To mount the new wheel, follow the instructions above in
reverse order.
6.4 REPLACING THE CENTERING DOME ON THE
SANDING PLATE
1Remove the sanding plate from the SINGLE and lay it on the
floor with the flat side down.
2Turn the centering dome clockwise out of the sanding plate
with an open-ended or ring spanner (LEFT-HANDED THREAD,
Fig. 36)!
3To mount the new centering dome, screw it anti-clockwise
into the sanding plate (LEFT-HANDED THREAD)!
Fig. 35 Remove the retaining ring and remove the washer
and the wheel. Install again in reverse order.
Fig. 36 To remove the centering dome, turn it in a clock-
wise direction (LEFT-HANDED THREAD)!
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SINGLE 01.02.2013
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REGULAR MAINTENANCE AND TESTING
Regular maintenance and testing
in accordance with
accident prevention regulations
The electrical operating equipment and machine components must
be checked for their electrical and mechanical safety at least once
a year by a specialist, repaired if necessary and then their safety
certified by application of a test seal on the machine.
The elements required for dust pick-up must be checked at least
once a year by a specialist and also repaired if necessary. They
must also be certified as being in good working order.
Ensure that only original LÄGLER®spare parts are used for main-
tenance work. After-sales servicing should only be performed by
LÄGLER®or by a LÄGLER®-approved workshop.
The service passport inside the back cover of these operating in-
structions (Section 12) documents when and where you have had
your machine serviced.
Please enter the serial number and the year of construction of your
machine in the space provided on the back cover of these operation
instructions (please see the rating plate). If you do not do this, the
service passport is invalid.
Ensure that maintenance work is recorded in the service passport
by completing the relevant box with date, stamp and signature.
Fig. 37 The test seal is proof of safety certification.
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