1.1 Characteristic features of the machine .......................................................................................................................4
1.2 Description of the machine ...........................................................................................................................................4
1.3 Proper use as intended ..................................................................................................................................................5
2.2 General safety instructions ...........................................................................................................................................9
3 Technical data ...............................................................................................................................................................11
4.1 Attaching the dust bag .................................................................................................................................................13
4.2 Swivelling the pressure hose ......................................................................................................................................14
4.3 Installing the Velcro strip .............................................................................................................................................14
4.4 Installing the extension and the handlebar ...............................................................................................................15
4.5 Adjusting the extension and the handlebar ...............................................................................................................15
4.6 Adjusting the guide rollers ..........................................................................................................................................17
4.7 Adjusting the wall-protecting wheel .......................................................................................................................... 19
4.8 The machine handle on the attachment.....................................................................................................................20
4.9 Connecting the power supply cable ...........................................................................................................................20
4.10 Adjusting the working light ..........................................................................................................................................21
4.11 Switching on the machine ...........................................................................................................................................22
4.12 Switching off the machine ...........................................................................................................................................22
5 Working with the UNICO ..............................................................................................................................................23
5.1 General application tips ...............................................................................................................................................23
5.2 Replacing the abrasives ..............................................................................................................................................25
5.3 Removing and emptying the dust bag ........................................................................................................................28
6 Transport and storage .................................................................................................................................................. 30
6.1 Machine transport ........................................................................................................................................................30
7 Maintenance work and replacement of wearing parts ............................................................................................31
7.1 General cleaning and care .......................................................................................................................................... 32
7.2 Cleaning the V-belt drive unit ......................................................................................................................................32
7.3 Tensioning the V-belt ....................................................................................................................................................33
7.4 Replacing the V-belt .....................................................................................................................................................34
7.5 Replacing the guide rollers .........................................................................................................................................38
7.6 Replacing the wall-protecting wheel .........................................................................................................................38
7.7 Replacing the fluorescent tube ...................................................................................................................................39
8 Regular maintenance and testing in accordance with accident prevention regulations ....................................40
11 Spare parts ....................................................................................................................................................................46
12 Service passport ...........................................................................................................................................................55
13 EU Declaration of conformity ......................................................................................................................................56
WARNING!
CAUTION!
ATTENTION!An undesired event can occur if the corresponding instructions are not followed!
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Death, severe physical injury or significant property damage can occur if the corresponding cautionary measures are not taken!
Moderate to light physical injury or property damage can occur if the corresponding
cautionary measures are not taken!
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INTRODUCTION
Introduction
You have purchased a high-quality product
from LÄGLER®. We wish you a great deal
of success with your UNICO. All LÄGLER®
products are subjected to a thorough inspection before leaving the factory.
Please read these operating instructions
completely before you begin working with
your UNICO. These operating instructions
include important information on occupational safety and will provide you with
answers to many questions so that you
can work with the machine safely and
without any problems. If you cannot find a
specific subject in these operating instructions, please read the LÄGLER® application
technique guidelines “Sanding of wooden
floors” (http://www.laegler.com) or contact
our service department, your retailer or
your importer.
1.1 CHARACTERISTIC FEATURES OF THE MACHINE
In Figure 1 (page 2), we have provided the UNICO with the designa-
tions of the most important components. Please take a little time to
become with the machine.
1.2 DESCRIPTION OF THE MACHINE
The edge sanding machine UNICO works with a sanding disc wheel,
which is installed in an attachment. Three attachments in various
lengths can be supplied. The housing of the attachment covers the
actual working zone. A machine handle, which is used to guide the
machine when you are working on your knees, can be installed
depend ing on the length of the respective attachment. Velcro sealing tape is used to seal off the working zone from the discharge of
dust. The resulting increased flow speed of the air upon entering
the working zone from outside guarantees constant good suction of
the sanding dust. Inside the attachment, there is a running V-belt,
which is driven via the V-belt pulley of the motor installed vertically
on the fan housing. The two guide rollers, which support the rear
of the machine, are also installed on the fan housing. In front, the
machine rests on the sanding abrasive (three-point support). The
fan housing is provided with two additional drilled holes into which
the machine handle can be screwed if and when required. On the
rear side of the fan housing, a rotating pipe bend fitted to a pipe
union conveys the sanding dust into the dust bag. The dust bag is
fastened to the pipe bend by means of a quick fastener.
The dust bag is suspended from the cable rod by means of a textile
loop. This textile loop keeps the connection cable away from the
working zone and is inserted in the holder on the pipe bend of the
machine guid ing system. This holder also includes the Allen key,
which is required to replace conventional sanding discs. The pipe
bend can be used to guide the machine when you are working on
your knees. An extension including a handlebar is installed at the
front end of the pipe end and can be used to guide the machine
when you are working in a stooped position or in an upright position. The extension and the handlebar can be adjusted as soon as
the clamping lever has been opened.
The machine guiding system and the switch box are attached to
the motor. An On/Off switch including no-volt release as well as
the rotating and swivelling working light is fitted to the upper side
of the switch box.
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INTRODUCTION
1.3 PROPER USE AS INTENDED
The edge sanding machine UNICO is suitable for the dry sanding
of parquet floors, deal floors, and cork floors in dry environment.
WARNING!
RISK OF DEATH from electrical shock:
Any other form of use is not permitted without the consent of the
manufacturer.
1.4 PROTECTIVE DEVICES
The following parts of the machine are protective devices and must
therefore be in perfect condition at all times:
Velcro sealing strip = dust protection
attachment = protection against tools
dust bag = dust protection
The machine may never be used for wet
processing operations of any kind!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
Hazard warnings and safety instructions
2.1 HAZARD WARNINGS
WARNING!
RISK OF DEATH, RISK OF INJURY, RISK OF
FIRE:
• Be certain to read the hazard warnings
and safety instructions before using the
machine!
• Instruct your co-workers and colleagues
accordingly! Otherwise, these persons
could be exposed to danger or injured!
ATTENTION!
• Keep these hazard warnings and safety
instructions in a safe place!
• Note the valid regulations and legal
conditions in your country!
WARNING!
RISK OF DEATH from suffocation and RISK OF INJURY:
• Never wrap the power cable around your neck or other
parts of the body!
RISK OF DEATH from electrical shock:
• The machine may never be used for wet processing
operations of any kind!
• Do not expose the machine to rain! Do not use the machine
in moist or wet environments!
• To protect yourself and the machine against faults in the mains
supply use a safety switch (for German mains supply part
number in Section 11, Spare parts)!
Note the valid regulations and legal conditions in your
country!
• The machine must be switched off and the power plug must
be removed from the socket during all maintenance work and
work on the electrical equipment!
• Avoid body contact with grounded parts, e.g. pipes, radiators,
ovens, refrigerators!
• The quality of the motor cable and the power cables must
match the quality of the original LÄGLER® cable!
• The power cables must be protected from mechanical and/
or electrical damages in the workplace!
• Do not carry or pull by the machine by the cable! Do not pull
on the cable to remove the plug from the socket! Protect the
cable against heat, oil and sharp edges!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
WARNING!
RISK OF EXPLOSION due to sparks while sanding or a high dust
concentration in the air:
• Do not use the machine near
- sources of fires,
- flammable liquids or gases,
- potentially explosive areas!
• Do not smoke in a dusty environment, e.g. while sanding or
emptying the dust bag!
RISK OF FIRE from spontaneous combustion or from sparks while
sanding:
• There is a high risk of fire when sanding woods with a large
amount of resin, oiled or waxed floors or metal! Therefore,
the machine must always be cleaned carefully directly after
sanding! Be certain to note the warning notices of the paint,
oil and wax manufacturers!
• Cloths, pads, et cetera which have been immersed in oil or wax
can spontaneously combust! Be certain to note the warning
notices of the paint, oil and wax manufacturers!
• The dust bag must always be removed from the machine
after sanding and emptied into a non-combustible container outdoors! Cover this container with a non-combustible
cover and be certain to store it and the dust bag outdoors
(Section 5.3, Removing and emptying the dust bag)!
RISK OF FIRE from the overheating of the cables:
• Only use motor cables and power cables with three wires
and wire cross-sections of at least 1.5 mm²
HEALTH RISK caused by dust:
• Make sure that the dust bag is properly fastened to the machine!
• If the machine is operated correctly, the mandatory dust
emission values will not be exceeded! When emptying the
dust bag outdoors, a respiratory protective mask (at least
filter class P2) must be worn!
• A respiratory protective mask (at least filter class P2) must
be worn when conducting other work that creates dust, e.g.
cleaning of the machine!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
CAUTION!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from rotating
tools and parts of the machine:
• Before switching on the machine, make sure that all tools
and adjustment tools have been removed from the machine!
• The machine may not be started if the sanding plate is on the
floor! Therefore, tip the machine backwards slightly to start
the machine ( Section 4.11, Switching on the machine)!
• Do not reach into rotating tools or parts of the machine!
• Do not let children or other persons touch the machine or
cable and keep them out of the work area!
• Do not wear any long articles of clothing or jewellery! These
could be caught by moving parts!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from unintentional starting of the machine:
• The power plug must be removed from the socket when the
machine is switched off!
• Make sure that ON/OFF switch is not set to ON when connecting the machine to the mains supply!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from the rolling
away, tipping or falling of the machine:
• The machine must be secured against rolling away, tipping
or falling when not in use!
Always ensure that the machine is standing securely!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from unsuitable
parts:
• Only use tools, accessories and spare parts from LÄGLER®
for the UNICO ( Section 11, Spare parts)! There is no
guarantee for external parts or liability for damage caused
by them!
HEALTH RISK caused by noise:
• Use hearing protection when conducting work that produces
noise!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
CAUTION!
RISK OF PROPERTY DAMAGE:
• Do not store the unused machine with sanding media on the
sanding plate! The sanding media can cause scratches on
the ground!
• Improper transport will result in damage to the machine!
2.2 GENERAL SAFETY INSTRUCTIONS
• Provide good illumination in the workplace!
Well lit construction sites reduce the risk of injury and allow
you to better evaluate the quality of your work.
• Keep your work area clean!
Untidy work area create a risk of accidents.
• Use the proper machines!
Do not use low-performance machines or additional devices
for heavy jobs. Do not use the machine for purposes and work
that it is not intended for.
• Do not overload the machines!
It works better and more safely in the power range noted.
• Do not bend too far over the machines!
Avoid unnatural postures. Make sure that you stay in a stable
position and keep your balance at all times.
• Be attentive!
Pay attention to your work. Work carefully and do not use the
machines if you are not concentrating.
• Maintain your machines with care!
Keep your machines clean so that you can work better and
more safely. Follow the maintenance guidelines and the
instructions for replacing tools. Regularly inspect the cable
and have it replaced by a qualified electrician if it is damaged.
Inspect the extension cable regularly and replace it if it is
damaged. Keep the handles dry and free of oil and grease.
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
• Check your machines for damage!Before using the machines, you must inspect the safety
devices or damaged parts carefully to ensure that they are
working perfectly and as intended. Check whether the moving
parts are working properly, that they are not sticking, that no
parts are broken, whether all parts are in perfect condition
and installed properly and whether all other conditions which
could influence the operation of the machine are in order.
Damaged safety devices and parts must be properly repaired
or replaced by an authorized service shop insofar as nothing
to the contrary is indicated in the operating instructions. Damaged switches must be replaced by a qualified electrician.
Do not use the machine if it cannot be started or switched
off by using its switch.
• Store your machines safely!Store your unused machines in a dry, closed location out of
the reach of children!
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TECHNICAL DATA
Technical data
Manufacturer ....................................................... Eugen Lägler GmbH
Machine type .................................................. edge sanding machine
Serial number ................................................................see type plate
Year of manufacture......................................................see type plate
Motor design type ..........................................single-phase AC motor
Voltage .........................................................220 - 230 V or 110 - 120 V
Frequency ..................................................................50 or 60 Hz (cps)
Power ..........................................................................................1.1 kW
Protection by fuses ........................................................................10 A
Insulation class ...................................................................................B
Protection class ............................................................................IP 54
Abrasive ...............................commercially available abrasives with
Ø 178 mm / 180 mm (7” - 7 1/8”)
(sandpaper, sanding grid, Scotch-Brite pad)
Vibration total value ahv ...................................................... < 2.5 m/s²
(measured at the handle)
NOTE on noise emission:
The values indicated are emission values
and must not represent safe workplace
values as well.
Although a correlation exists between
emission levels and immission levels, it is
not always possible to determine whether
additional precautionary measures are
required.
Factors that can have an effect on the
immission level existing at the workplace
include the duration of the effects, the
characteristics of the work area and other
sources of noise, e.g. the number of machines and processing operations in the
vicinity. The permissible workplace values
may also vary from country to country.
This information, however, is intended to enable the user to better estimate the dangers
and risks.
NOTE:
The motor data indicated here refers to
machines used in Germany or USA. Exported
machines may have other data that can be
seen on the motor type plate.
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WARNING!
RISK OF DEATH from electrical shock:
The machine may never be used for wet
processing operations of any kind!
NOTE:
3
TECHNICAL DATA
Intended use
Dry edge-sanding of wooden and cork floors.
Basic equipment
Machine including dust bag, MultiClip fastener for dust bag, Velcro
strip for attachment, cable rod, 10 m extension cable 3 x 1.5 mm²,
O-ring as strain relief device, Allen key size 4 mm, Allen key size
5 mm, Allen key size 6 mm, respiratory protective mask (P3), and
manual of operating instructions.
Special accessories
Ear muffs “Pocket”, safety switch for fault current PRCD-S (for
German mains supply).
You will find the corresponding part numbers
for the optional equipment and wearing
parts in Section 11, Spare parts.
Wearing parts or safety-relevant parts
Please check the condition of the parts mentioned below at regular
intervals in order to be able to work safely and to achieve the best
possible results at all times:
• Renew extension cable after being damaged.
• Renew motor cable after being damaged.
• Renew switch after being damaged.
• Renew Velcro sealing tape or sealing set for attachments after
being damaged.
• Renew MultiClip fastener after being damaged.
• Renew V-belt after being worn out.
• Renew Velcro disc after being damaged.
• Renew sandpaper tensioning screw after being damaged.
• Renew dust bag after being damaged.
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COMMISSIONING
Commissioning
The section describes how to put the UNICO into service on site.
To exclude any form of damage or malfunctions, you must proceed
in the order of steps mentioned below.
CAUTION!
RISK OF INJURY and RISK OF PROPERTY DAMAGE:
Before working with the machine for the first time, operating
staff must be adequately instructed!
4.1 ATTACHING THE DUST BAG
1Unpack the machine carefully. Make sure that the packaging
materials that are no longer required are disposed of properly
in accordance with environmental protection regulations.
The packaging should be used as a transport container in
order to ensure safe machine shipment without any risks.
2 Slide the MultiClip fastener over the opening of the dust bag
(Fig. 2).
3Pull the opening of the dust bag over the suction pipe stub of
the machine. Make sure that the sling on the dust bag is on
top (Fig. 3).
4Slide the MultiClip fastener approximately 1 to 2 cm (½ to 1”)
over the pipe stub.
5Tighten the MultiClip fastener firmly by hand and make sure
that the dust bag is not folded underneath the MultiClip fastener. In addition, then use the string to tie up the dust bag
(Fig. 4).
Fig. 2 Slide the MultiClip fastener over the opening of
the dust bag.
Fig. 3 Pull the dust bag over the suction pipe stub. The
sling A must be on top.
Fig. 4 Tighten the MultiClip firmly by hand and tie up the
dust bag.
6Pick up the cable rod and hook it into the sling on the top end
of the dust bag (Fig. 5).
7Insert the cable rod into the proper bracket on the pipe bend
(rear side of the machine) next to the Allen key (Fig. 6).
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Fig. 5 Hook the cable rod into the sling on the dust bag.
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Fig. 6 Inserting the cable rod into the proper bracket.
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COMMISSIONING
4.2 SWIVELLING THE PRESSURE HOSE
For your sanding work, the pressure hose can be rotated toward the
left or right depending whether you standing on the right-hand side
or on the left-hand side of the machine or whether you are kneeling
or bending down. This ensures a constant volumetric flow of the air
being sucked into the machine.
1On the pressure hose, grab the black plastic pipe stub below
the hose piece and rotate it toward the desired side. The dust
bag will swivel with the black plastic pipe stub (Fig. 7). Do not
use the upper curved pipe piece to rotate the pressure hose.
2Whenever appropriate, make sure that the dust bag is properly
positioned without any folds.
Fig. 7 The pressure hose can also be rotated at the lower
plastic pipe stub.
Fig. 8 Install the Velcro strip carefully to ensure properly
sealing.
4.3 INSTALLING THE VELCRO STRIP
Depending on the thickness of the abrasive in each case, the Velcro
sealing strip on the attachment must be repositioned in order to
improve the airflow conditions at the front end of the attachment
and to seal off the sanding zone from the surrounding area.
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Fasten the Velcro strip by one end of the adhesive strip to the
attachment and then place it all the way around the attachment (Fig. 8).
4On the front side of the machine, the Velcro strip should be
about 1 mm away from the floor in order to be able to provide
an air inlet. At all other locations, the strip is supposed to be
resting on the floor.
14
5The Velcro strip must be renewed whenever it is worn-out.
However, you can, of course, also use the upper edge of the
Velcro strip after turning it over.
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COMMISSIONING
4.4 INSTALLING THE EXTENSION AND THE
HANDLEBAR
1Insert the extension into the clamping piece of the pipe bend
and tighten the clamping lever firmly (Fig. 9).
2Insert the long straight end of the handlebar into the clamping
piece and tighten the clamping lever firmly. (Fig. 10).
4.5 ADJUSTING THE EXTENSION AND THE
HANDLEBAR
4.5.1 ADJUSTING THE EXTENSION
The extension of the UNICO can be adjusted to suit the height and
body position of any person performing the sanding work:
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 To adjust the handle height, undo the clamping lever at the
front end of the pipe bend (Fig. 11, 1.).
4Slide the extension upward or downward (Fig. 11, 2.). At the
bottom, it is also allowed to rest on the fan housing (Fig. 12).
5Tighten the clamping lever firmly again (Fig. 11, 3.).
Fig. 9 Inserting the extension into the clamping piece of
the pipe bend.
Fig. 10 Inserting the handlebar into the clamping piece of
the extension and tightening the clamping lever.
6To adjust the handlebar, undo the clamping lever at the upper
end of the extension (Fig. 13, 1.).
7Tilt the handlebar over into the desired position (Fig. 13, 2.)
and then tighten the clamping lever firmly again.
Fig. 12 The extension can also be pushed all the way
down to the fan housing.
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Fig. 11 Undoing the clamping lever (1.), sliding the ex-
tension to suit your height (2.) and tightening the
clamping lever (3.).
Fig. 13 Undoing the clamping lever on the extension and
tilting the handlebar over into the desired posi tion.
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Fig. 14 Undoing the clamping lever on the extension.
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COMMISSIONING
4.5.2 REMOVING THE EXTENSION
Whenever you want to work in a stooped or kneeling position, you
can also remove the extension and fasten the handlebar directly
to the pipe bend:
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Undo the clamping lever at the upper end of the extension
(Fig. 14).
4Pull the handlebar out of the clamping piece and remove it
upward (Fig. 15). Put the handlebar aside.
Fig. 15 Removing the handlebar.
Fig. 16 Undoing the clamping lever at the pipe bend and
removing the extension.
5Undo the clamping lever at the front end of the pipe bend and
pull the extension upward out of the bracket (Fig. 16). Put the
extension aside.
4.5.3 INSTALLING THE HANDLEBAR
The handlebar can be installed on the pipe bend in vertical position
as well as in horizontal position.
Handlebar in vertical position:
1Remove the extension first, as described in the preceding
Section 4.5.2.
2Install the handlebar directly in the bracket on the front end
of the pipe bend (Fig. 17). Tighten the clamping lever again.
Handlebar in horizontal position:
3Use the enclosed Allen key to undo the screw on the angle
clamping connector of the pipe bend and then rotate the angle
clamping connector by 90° (Fig. 18).
Fig. 17 Installing the handlebar on the pipe bend.
16
4Use the Allen key to tighten the screw of the angle clamping
connector again.
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COMMISSIONING
4.6 ADJUSTING THE GUIDE ROLLERS
The position of the guide rollers has a direct effect on the sanding
results and on the aggressiveness of the machine. For rough sanding
operations, a larger setting angle is selected and a flatter setting
angle for fine-sanding operations.
Normally, the UNICO is supposed to sand the floor precisely at the
front side of the attachment (Fig. 19). If this is not the case, the
machine will be sanding on one side (Fig. 20 and 22). The height
of one of the guide rollers must then be readjusted (Fig. 21 and 23)
because the quality of the sanded section is not the best and also
because this has a negative effect on the suction system.
In case the setting angle of the sanding disc is too large or too
small, both guide rollers must be readjusted. Whenever too much
material is sanded off on too little surface area, the setting angle
is too large and the guide rollers must then be moved further inside
the guide roller arms of the fan housing. Whenever the sanding
capacity is insufficient and the surface being sanded is too large,
you must then move the guide rollers further out of the guide roller
arms of the fan housing.
With a correctly adjusted setting, the sanding zone is located at the
front edge of the attachment (Fig. 19).
If the machine is sanding too far to the right-hand side (Fig. 20), the
right-hand guide roller is further inside the guide roller arm of the
fan housing than the left-hand guide roller (Fig. 21).
Fig. 18 Undo the screw on the angle clamping connector
and rotate the angle clamping connector by 90°.
Fig. 19 Correctly adjusted guide rollers. The machine is
sanding in mid-position.
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Fig. 20 The sanding zone is too far to the right-hand side
means that …
Fig. 21 … the right-hand guide roller is further inside
the guide roller arm of the fan housing than the
left-hand guide roller.
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Fig. 22 The sanding zone is too far to the left-hand side
means that …
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COMMISSIONING
However, if the machine is sanding too far to the left-hand side
(Fig. 22), the left-hand guide roller is further inside the guide roller
arm of the fan housing than the right-hand guide roller (Fig. 23).
Depending on the model in each case, you can make the correct
settings using the distances between the guide roller arms of the
fan housing and the wheel forks (Fig. 24):
UNICO 105: X = 7 mm
UNICO 230: X = 9 mm
UNICO 350: X = 11 mm
To adjust the guide rollers, proceed as follows:
1Switch off the machine.
Fig. 23 … the left-hand guide roller is further inside the
guide roller arm of the fan housing than the righthand guide roller.
Fig. 24 Measure the distance between the guide roller
arm of the fan housing and the wheel fork.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Use a piece of wood or your foot to support the UNICO from
underneath to prevent the machine from falling onto the guide
roller.
4Undo the star grip screw on the guide roller arm of the fan
housing carefully (Fig. 25).
5Lift up the machine by grabbing it by the guide roller arm and,
at the same time, use your thumb to press down on the upper end of the guide roller shaft. Adjust the guide roller with
respect to the guide roller arm to the desired position and
tighten the star grip screw firmly. Put the UNICO down again.
6Carry out a trial sanding operation. If the machine does
provide the desired mid-position sanded section, repeat the
above-mentioned steps.
Fig. 25 Undo the star grip screw carefully and then adjust
the guide roller.
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COMMISSIONING
4.7 ADJUSTING THE WALL-PROTECTING WHEEL
In case of walls or baseboards with different shapes, sanding into
these walls or baseboards can be prevented by adjusting the wallprotecting wheel.
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Use an Allen key to undo the screw in the centre of the wall-
protecting wheel and then move the wall-protecting wheel
into the desired position (Fig. 26). Tighten the screw again.
You can also increase the adjustment distance of the wall-
protecting wheel by undoing the two screws with which the
wall-protecting wheel bracket is fastened to the attachment
(Fig. 27, 1. + 2.).
Fig. 26 Undo the screw in the centre of the wall-protect-
ing wheel and then position the wheel.
4Move the wall-protecting wheel bracket into your desired
position (Fig. 27, 3.) and then tighten the screws again.
5To check your adjustments, place the switched-off UNICO
against the wall so that the wall-protecting wheel rests
against the wall. However, the sanding disc wheel is not allowed to touch the wall or the baseboard. Otherwise, readjust
the wall-protecting wheel.
In the case of applications in which you deliberately want to sand
right up to the wall, you can then move the wall-protecting wheel
completely out of the working zone.
In the case of applications in which you want to sand underneath
very low radiators or cabinets, you can then remove the wallprotecting wheel completely:
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
Fig. 27 Undo the screws on the wall-protecting wheel
bracket.
Fig. 28 Remove the screws on the wall-protecting wheel
bracket and then remove the complete wallprotecting wheel.
3Remove the two screws with which the wall-protecting wheel
bracket is fastened to the attachment and then remove the
complete wall-protecting wheel (Fig. 28).
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Fig. 29 The machine handle is used in the kneeling posi-
tion to guide the attachment.
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COMMISSIONING
4.8 THE MACHINE HANDLE ON THE ATTACHMENT
The machine handle is installed on the front end of the long attachment (type 350) and of the medium-sized attachment (type 230).
The machine handle is used in the kneeling position to guide the
attachment (Fig. 29). The machine handle can be unscrewed and
then installed on the right-hand side or on the left-hand side of the
rear side of the fan housing. When you are kneeling, you can then
use the handle guide the machine in inaccessible locations. In the
case of the UNICO equipped with the short attachment (type 105),
the machine handle is installed on the fan housing as a standard
equipment feature.
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
Fig. 30 The machine handle can also be screwed into the
fan housing.
Fig. 31 Connect the motor cable including the extension
cable to the extension cable and then fasten the
strain relief ring to the extension cable.
3 Unscrew the machine handle out of the attachment.
4 Screw the machine handle into the right-hand side or into the
left-hand side of the fan housing and then tighten the handle
firmly by hand (Fig. 30).
4.9 CONNECTING THE POWER SUPPLY CABLE
1Insert the plug of the motor cable into the coupling of the
extension cable (Fig. 31, 1.).
2Fasten the strain relief ring to the extension cable (Fig. 31, 2.).
Run the extension cable past the right-hand side of the dust
bag and then hook the ring into the cable rod (Fig. 32).
Make sure that the cable can slide back and forth easily
and does not pinch off the dust bag at any place. This will
guarantee that there are no negative effects on the suction
function.
Fig. 32 Run the extension cable past the right-hand side
of the dust bag and then hook the strain relief ring
into the cable rod.
20
3Insert the cable plug of the extension cable into a sufficiently
fuse-protected power supply socket equipped with earthing
contacts. For increased safety, we recommend the use of a
safety switch for fault current (for German mains supply: part
number in Section 11, Spare parts).
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COMMISSIONING
4.10 ADJUSTING THE WORKING LIGHT
As soon as the connected extension cable has been inserted, the
working light installed on the UNICO will light up. If this is not the
case, check the power supply.
For more light from above, the working light can be swivelled upward
(Fig. 33) and rotated about its own axis (Fig. 34). In the transport
position, the light is well protected and illuminates the close range
more intensively during the sanding work (Fig. 35).
Fig. 33 The working light can be swivelled upward.
Fig. 34 The working light can be rotated about its own
Fig. 35 In the transport position, the close range is il-
axis.
luminated better.
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WARNING!
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COMMISSIONING
4.11 SWITCHING ON THE MACHINE
RISK OF DEATH from electrical shock:
Do not use extension cables that are too
long including any electrical installations
that are too weak, not fuse-protected or
otherwise dangerous. Use sockets with
earthing contacts only!
CAUTION!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from rotating
parts of the machine:
• Always tip the machine backwards slightly before
switching on the machine (Fig. 36, Fig. 37) so that the
sanding disc is raised off the floor!
• Never allow the machine to run unattended!
The UNICO is now ready to be started. When the machine is being
switched on, the sanding disc wheel must be relieved of pressure
slightly. Tilt the machine slightly backward. Depending on your working position, you will be using one hand to hold the handlebar on the
extension (Fig. 36) or the machine handle on the attachment (Fig. 37).
Now you can start the machine by pressing the rocker switch.
4.12 SWITCHING OFF THE MACHINE
Fig. 36 To switch on the machine, tilt the UNICO slightly
backward, use one hand to hold it by the handlebar and use your other hand to press the rocker
switch.
Fig. 37 To switch on the machine, tilt the UNICO slightly
backward, use one hand to hold it by the machine
handle and use your other hand to press the
rocker switch.
CAUTION!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from rotating
parts of the machine:
Always tip the machine backwards slightly before switching
off the machine so that the sanding disc is raised off the floor!
To switch off the machine, tilt the machine slightly backward and
then press the rocker switch on the side marked with “0”. Wait until
the sanding disc wheel comes to a standstill before you place the
machine on the sanding disc wheel again.
CAUTION!
RISK OF INJURY and RISK OF PROPERTY DAMAGE:
Always remove the power plug from the socket after you have
switched off the machine!
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WORKING WITH THE UNICO
Working with the UNICO
5.1 GENERAL APPLICATION TIPS
WARNING!
RISK OF DEATH from electrical shock:
The machine may never be used for wet processing operations
of any kind!
The UNICO is used for the fine-sanding of transitions, borders,
edges, and corners.
Generally, a Velcro coating is used on the sanding disc wheel. This
Velcro coating provides a good dampening effect and also a cooler
sanded section, which results in a higher sanding performance rate.
In addition to modern Velcro sanding discs, traditional paper-type
sanding discs can also be used.
Velcro sanding discs are slightly more expensive than paper-type
sand ing discs. However, the price difference is not an important
factor when the higher quality of the abrasive and the considerably
shorter disc-replacing time is included in the calculation of costs.
To achieve a very smooth surface in the edge areas of the floors
and to carry out the sanding operation for the intermediate
lacquer coat, you can install a sanding grid including an edge
sanding pad as a base on the sanding disc wheel of the UNICO
(Section 5.2.3, Changing over from sanding discs to sanding grids with pad base).
Prevent sanding marks caused by previously used grain sizes by
complying with the recommended grain size order and by not skipping more than one grain size at a time.
Following each sanding operation, vacuum-clean the floor thoroughly. Keep the running wheels of the machine clean at all times.
You will also find important and interesting application tips in the
LÄGLER® application technique guidelines “Sanding of wooden
floors”(http://www.laegler.com)!
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Fig. 38 Working in standing position with the UNICO.
Fig. 39 Working in stooped position with the UNICO
includ ing the extension.
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WORKING WITH THE UNICO
Fig. 40 Working in stooped position with the UNICO with-
out the extension.
5
You can work in various positions of your body with the machine. To
prevent the dust bag from disturbing you during your sanding work,
you can either swivel the pipe bend to the side or position the dust
bag between your legs. In any case, you should always make sure
that the dust bag is not constricted in order to be able to achieve
good extraction of the sanding dust.
The various adjustment possibilities for the extension and the handlebar are described in Section 4.5.
standing working position:
The height of the extension is adjusted according to your height
(Fig. 38).
stooped working position:
The extension is pushed all the way down (Fig. 39) or the handlebar
is installed directly on the pipe bend (Fig. 40).
Fig. 41 Working in kneeling position with the UNICO.
Fig. 42 Working in kneeling position with the UNICO.
kneeling working position:
You can use the machine handle or the pipe bend to guide the ma-
chine (Fig. 41). You do not need to remove the extension.
In case you want to sand underneath a radiator, for example, you
can remove the machine handle from the attachment and install it
on the fan housing (Fig. 42).
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WORKING WITH THE UNICO
5.2 REPLACING THE ABRASIVES
Use the following abrasives only:
• Velcro sanding discs
• paper or fabric discs with 4 slits and a hole in the centre with a
diameter of 22 mm (7/8”)
• sanding grid and pad with a hole in the centre with a diameter of
22 mm (7/8”)
The abrasive must have an external diameter of 178 - 180 mm
(7 - 7 1/8”).
Always install only one sanding disc since otherwise the sanding
results will be unsatisfactory and the dust extraction system will
not be fully operative.
Each time you replace the abrasive, make sure that the Velcro
sealing strip on the attachment is correctly seated.
You will use various grain sizes of the abrasive depending on the
sand ing work in each case. To replace the abrasive, proceed as
follows:
5.2.1 REPLACING VELCRO SANDING DISCS
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Place the UNICO on its side by grabbing the machine by the
handlebar on the right-hand side and then tilt the machine
over to the left-hand side (Fig. 43) and set it down carefully.
Always set the UNICO down on the left-hand side (Fig. 44)!
This will prevent damage to the floor.
4Pull off the worn-out Velcro sanding disc from the sanding
disc wheel (Fig. 45).
Fig. 43 Tilt the UNICO over to the left-hand side and set
it down carefully.
Fig. 44 Place the UNICO down on the left-hand side only.
Fig. 45 Simply pull off the worn-out Velcro sanding disc.
5Use the proper Allen key or other suitable tool and insert it
through the small hole of the new Velcro sanding disc.
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WORKING WITH THE UNICO
6Set the Velcro sanding disc in place by inserting the Allen key
in the hole of the sanding disc first and then into the hexagon
socket of the sandpaper tensioning screw (Fig. 46). Then move
the sanding disc up to the sanding disc wheel so that it rests
precisely in centred position on the sanding disc wheel.
7Remove the Allen key or the centring tool you have used and
press the disc evenly onto the Velcro disc wheel. Store the
centring tool in a safe place.
Fig. 46 To centre the sanding disc, insert the Allen key
into the hole of the sanding disc and then into
the hexagon socket of the sandpaper tensioning
screw.
Fig. 47 Undo the sandpaper tensioning screw. To hold
the sanding disc wheel, use your thumb to grab
behind the sanding disc.
5.2.2 REPLACING CONVENTIONAL SANDING DISCS
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Place the UNICO on its side by grabbing the machine by the
handlebar on the right-hand side and then tilt the machine
over to the left-hand side (Fig. 43) and set it down carefully.
Always set the UNICO down on the left-hand side (Fig. 44)!
This will prevent damage to the floor.
4Use the proper Allen key and undo the sandpaper tensioning
screw (normal right-hand thread). At the same time, use your
other hand to hold the sanding disc wheel. If you use your
thumb to grab behind the sanding disc, you will reduce the
wear on the sandpaper tensioning screw (Fig. 47).
Fig. 48 Install the new sanding disc and then tighten the
sandpaper tensioning screw firmly by hand.
26
5Unscrew the sandpaper tensioning screw all the way out of
the hole. Remove the screw and the sanding disc from the
sanding disc wheel and put them aside.
6Place a new sanding disc on the sanding disc wheel and
insert the sandpaper tensioning screw into the sanding disc
wheel. Make sure that the sanding disc is fastened in the best
possible centred position on the sanding disc wheel (Fig. 48).
7Use the Allen key to screw the sandpaper tensioning screw
into the sanding disc wheel. Tighten the sandpaper tensioning
screw firmly by hand.
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WORKING WITH THE UNICO
5.2.3 CHANGING OVER FROM SANDING DISCS TO SANDING
GRIDS WITH PAD BASE
To achieve a very smooth surface in the edge areas of the floors
and to carry out the sanding operation for the intermediate lacquer
coat, you can install a sanding grid including an edge sanding pad
as a base on the sanding disc wheel of the UNICO. Always use an
edge sanding pad as a base (part number in Section 11, Spare parts).
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Place the UNICO on its side by grabbing the machine by the
handlebar on the right-hand side and then tilt the machine
over to the left-hand side (Fig. 43) and set it down carefully.
Always set the UNICO down on the left-hand side (Fig. 44)!
This will prevent damage to the floor.
4Remove the sanding disc as described in Sections 5.2.1 or
5.2.2.
5Place an edge sanding pad and then a sanding grid on the
sanding disc wheel. Insert the sandpaper tensioning screw
into the sanding disc wheel. Make sure that the pad and the
grid are fastened in the best possible centred position on the
sanding disc wheel (Fig. 49).
Fig. 49 Place the edge sanding pad on the sanding disc
wheel first and then the sanding grid, and afterwards, tighten the sandpaper tensioning screw
firmly by hand.
6Use the Allen key to screw the sandpaper tensioning screw
into the sanding disc wheel. Tighten the sandpaper tensioning
screw firmly by hand.
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WORKING WITH THE UNICO
5.3 REMOVING AND EMPTYING THE DUST BAG
WARNING!
RISK OF FIRE from the formation of sparks while sanding:
• The dust bag must always be removed from the machine
after sanding and emptied into a non-combustible container
outdoors!
• Cover this container with a non-combustible cover and be
certain to store it and the dust bag outdoors!
HEALTH RISK caused by dust:
In order to ensure that the dust values in the air do not exceed
the prescribed threshold levels, please note:
•The dust bag must be emptied when it is one-third full at
the very latest in order to prevent a deterioration of the
suction performance due to the lack of filtering surface
area!
• Do not work with an overfilled dust bag!
• The dust bag must be emptied outdoors!
• When emptying the dust bag, wear a respiratory protective
mask (at least filter class P2)!
•Do not wash, patch or repair the dust bag in any other
manner!
• Damaged dust bags must be replaced with new ones!
Use only original LÄGLER® dust bags for the UNICO (part number
in Section 11, Spare parts).
When emptying the dust bag, you must use a respiratory protective
mask (at least filter class P2).
1Switch off the machine.
28
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Put on the enclosed respiratory protective mask (at least filter
class P2).
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WORKING WITH THE UNICO
4Hold the UNICO firmly by the extension and by the machine
handle. Shake the machine so that the dust falls from the
suction pipe stub into the dust bag (Fig. 50). Set the machine
down on the floor again.
5Remove the strain relief ring together with the extension cable
from the cable rod (Fig. 51, 1.).
6 Unhook the sling on the dust bag from the cable rod (Fig. 51, 2.).
7 Open the loop of the string on the dust bag (Fig. 51, 3.).
8 Undo the MultiClip fastener by unscrewing the nut (Fig. 51, 4.).
9 Pull off the dust bag from the pipe stub carefully (Fig. 51, 5.)
and then use the string to close the dust bag so that no dust
can escape on the way to the emptying location. Remove the
MultiClip fastener.
10 Empty the dust bag into a non-combustible container out-
doors! Whirl up as little dust as possible! Close this container
with a non-combustible cover and store it outdoors (RISK OF
FIRE)!
11 Install the dust bag again as described in Section 4.1, Attach-
ing the dust bag. Wear also the respiratory protective mask.
Fig. 50 Shake the machine so that the dust falls from the
suction pipe stub into the dust bag.
Fig. 51 Removing the dust bag.
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TRANSPORT AND STORAGE
Transport and storage
Fig. 52 To transport the machine, swivel the working light
downward.
6
WARNING!
RISK OF FIRE from spontaneous combustion or the formation of
sparks while sanding:
•Oil or wax can lead to spontaneous combustion! Therefore,
the machine must always be cleaned carefully before
transport or storage!
•Always transport and store the machine without the dust
bag! Store the used dust bag in a closed non-combustible
container!
Fig. 53 The UNICO can be easily carried by being picked
up by the pipe bend.
6.1 MACHINE TRANSPORT
WARNING!
RISK OF INJURY and RISK OF PROPERTY DAMAGE:
In the event of transport in an automobile or similar machine,
all parts must be secured against sliding!
Before transporting the UNICO, swivel the working light downward
(Fig. 52) The working light is protected against damage by the angle
plate on the switch box.
The machine can be easily carried by being picked up by the pipe
bend into the front end of which the extension is attached (Fig. 53).
Especially when transporting the machine over roads, paths, concrete surfaces or pavement surfaces, you should carry the UNICO
to prevent the guide rollers from becoming soiled and having an
negative effect on the sanding results. During transport in a lorry
or similar vehicle, all parts must be sufficiently secured to prevent
them from sliding away.
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
6.2 MACHINE STORAGE
WARNING!
RISK OF FIRE from spontaneous combustion or the formation of
sparks while sanding:
Always transport and store the cleaned machine without the
dust bag! Store the used dust bag in a closed non-combustible
container!
Whenever the machine is to be stored for a longer period of time,
provide a dry, frost-free storage location without excessive temperature variations.
7
Maintenance work and replacement
of wearing parts
WARNING!
RISK OF DEATH from electrical shock and RISK OF INJURY from
rotating parts of the machine:
• All extensive maintenance work, especially on the electrical equipment, must be conducted by a qualified expert for
safety reasons!
• All maintenance work must be conducted with the machine
switched off and with the power plug removed from the
socket!
From time to time, but never any later than the time when damage
is detected, you must carry out various maintenance tasks. Work at
a clean, well illuminated location and proceed according to these
instructions. In the tool bag you will find the necessary tools in order
to be able to carry out the tasks described below.
ATTENTION!
• Only use original spare parts from
LÄGLER®! This is the only way to
ensure that your machine continues
to perform! Warranty claims for thirdparty parts will not be honoured!
• Never conduct the maintenance work
and replacement of wearing parts on
the newly sanded wooden floor! You
could cause scratches or other damage
to the floor!
• Never use any cleaning products which
contain solvents!
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
An inspection of the machine must be carried out with a minimum
amount of time spent and rules out later complaints that could arise
from any minor damage on the machine. These measures contribute
considerably to preserving the value of the machine and, ultimately,
to your own safety as well.
7.1 GENERAL CLEANING AND CARE
Never use any cleaning products which contain solvents!
Before beginning the sanding work, you should carry out the following machine care measures to ensure proper operation of the
machine and to guarantee first-class sanding results:
• Check the Velcro coating of the sanding disc wheel for signs
of damage or soiling.
• Clean the running wheels of the machine.
• Check the suction system and the dust bag for any signs of
leakage or damage.
• Carry out a visual inspection of the electrical equipment
(extension cable, plug, and couplings).
7.2 CLEANING THE V-BELT DRIVE UNIT
Never use any cleaning products which contain solvents!
Following the floor restoration work, there is the possibility that residue from adhesives, waxes, sealing lacquers or similar substances
may have accumulated on the belt pulleys, on the V-belt or inside the
attachment housing. This can have a negative effect on the running
characteristics of the machine and reduce the suction capacity. The
conspicuous signs of this kind of soiling include irregular running,
difficult start-up, reduced working speed, and increased noise
development. The suction capacity also decreases. In the case, as
described in Section 7.4, the V-belt must be dismantled and cleaned,
and the attachment as well as the flanks of the belt pulleys must be
cleaned. Check also the fan wheel and the fan housing for any signs
of deposits. If and when required, a respiratory protective mask (at
least filter class P2) should be worn.
32
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
7.3 TENSIONING THE V-BELT
The V-belt must be re-tensioned from time to time. Proceed as
follows:
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Place the UNICO on its side by grabbing the machine by the
handlebar on the right-hand side and then tilt the machine
over to the left-hand side (Fig. 54) and set it down carefully.
Always set the UNICO down on the left-hand side (Fig. 55)!
This will prevent damage to the floor, and the shape of the
fan housing also stops any dust falling back out of the dust
bag from getting into the fan housing.
Fig. 54 Tilt the UNICO over to the left-hand side and set
it down carefully.
4To relieve the V-belt tension, use the proper Allen key to
unscrew the belt-tensioning screw all the way out until this
screw disappears on the front side in the threaded hole of
the fan housing (Fig. 56).
5Use the proper Allen key to undo all five screws with which
the attachment is installed on the fan housing (Fig. 57). Do
not unscrew this screw all the way out!
6Push the attachment all the way back. Use the machine handle
to pull the attachment forward again until you feel the resistance caused by the V-belt (Fig. 58). To prevent damage to the
floor, make sure that the attachment does not touch the floor!
Fig. 55 Place the UNICO down on the left-hand side only.
Fig. 56 Unscrew the belt-tensioning screw all the way
back.
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Fig. 57 Undoing the five fastening screws of the attach-
ment. Do not unscrew the screws all the way out!
Fig. 58 Use the handle to pull the attachment forward
until you feel the belt resistance.
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
7Use the Allen key to screw the five attachment-fastening
screws only so far into the drilled holes as required to ensure
that the attachment can no longer slide away; do not tighten
the screws.
8Set the attachment down again use the proper Allen key to
screw the belt-tensioning screw all the way forward until it
rests against the attachment (Fig. 59).
Fig. 59 Screw the belt-tensioning screw all the way in
until it rests against the attachment.
Fig. 60 The fastening screws are up against the slits in
the attachment.
9With 3 to 4 additional rotations of the belt-tensioning screw,
you will then tighten the belt exactly as required.
Do not tighten the V-belt too tightly since this will increase
the degree of wear and tear on the belt pulleys and V-belts
unnecessarily!
Whenever the V-belt can no longer be retightened because
the fastening screws are up against the slits in the attachment (Fig. 60), the wear limit of the V-belt has been reached
and the V-belt must be replaced (Section 7.4, Replacing the V-belt).
10Tighten the five screws with which the attachment is fastened
to the fan housing carefully.
7.4 REPLACING THE V-BELT
Whenever the V-belt can no longer be retightened because the
fasten ing screws are up against the slits in the attachment (Fig. 60),
the wear limit of the V-belt has been reached and the V-belt must
be replaced.
Fig. 61 Tilt the UNICO over to the left-hand side and set
it down carefully.
34
Use only original LÄGLER® V-belts (part number in Section 11, Spare parts).
Proceed as described below, whereby a sufficiently illuminated
workplace and good tools are recommended:
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Place the UNICO on its side by grabbing the machine by the
handlebar on the right-hand side and then tilt the machine
over to the left-hand side (Fig. 61) and set it down carefully.
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
Always set the UNICO down on the left-hand side (Fig. 62)!
This will prevent damage to the floor, and the shape of the
fan housing also stops any dust falling back out of the dust
bag from getting into the fan housing.
4To relieve the V-belt tension, use the proper Allen key to
unscrew the belt-tensioning screw all the way out until this
screw disappears on the front side in the threaded hole of
the fan housing (Fig. 63).
5Use the proper Allen key to undo all five screws with which
the attachment is installed on the fan housing (Fig. 64).
6Push the attachment all the way back and remove the five
screws with which the attachment is installed on the fan
hous ing. Please note that the fan housing including the motor
could tip over!
7 Remove the attachment and place it including the belt pul-
ley facing downward in flat position on a suitable working
surface. Do not place the attachment down on the wooden
floor! You could damage the floor!
8 Set a suitable screwdriver with a continuous blade on the
screws of the bearing unit of the sanding disc wheel. Use a
few light taps of your hammer on the screwdriver to loosen
these screws (Fig. 65)!
ATTENTION: risk of injury!
Fig. 62 Place the UNICO down on the left-hand side only.
Fig. 63 Unscrew the belt-tensioning screw all the way
out.
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Fig. 64 Undoing the five fastening screws of the attach-
ment.
Fig. 65 Using a suitable screwdriver with a continuous
blade and using a few light taps of your hammer,
loosen the screws of the bearing unit of the sanding disc wheel.
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
9Unscrew the screws all the way out (Fig. 66) and remove the
complete bearing unit of the sanding disc wheel (Fig. 67). The
sanding disc can remain on the sanding disc wheel.
10Pull the worn-out V-belt out of the attachment (Fig. 68). Clean
the two belt pulleys and the attachment. Wear a respiratory
protective mask (at least filter class P2) whenever appropriate.
Fig. 66 Unscrewing the screws.
Fig. 67 Removing the complete sanding bearing unit.
11Insert a new V-belt (Fig. 69). Pay attention to the correct
installation position of the belt and pull the belt all the way
back on the motor side.
12During the assembly of the attachment, pay attention to the
correct position of the intermediate sheet-metal plate between the fan housing and the attachment (Fig. 70)!
13On the motor side, pull the V-belt slightly out of the attachment
and then place it in the motor belt pulley (Fig. 71).
Fig. 68 Pulling the V-belt out of the attachment.
Fig. 70 During the assembly of the fan housing, pay at-
tention to the correct position of the intermediate
sheet-metal plate!
36
Fig. 69 Inserting a new V-belt and pulling it all the way
back on the motor side.
Fig. 71 Pull the V-belt slightly of the attachment and place
it in the motor belt pulley.
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MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
14Pull the V-belt forward on the sanding disc wheel side. Make
sure that the V-belt is in the V-belt groove of the motor belt
pulley. The attachment can then no longer fall off the fan
housing.
15To fasten the attachment to the fan housing, install the five
hexagon socket screws including the respective washers
(Fig. 72). Do not tighten the screws!
16 Push the attachment all the way back.
17 At the front of the attachment, insert the belt pulley of
the bearing unit of the sanding disc wheel into the V-belt
(Fig. 73).
18To make sure that the hole pattern of the attachment and
the fixture of the sanding disc wheel line up properly, insert
a screwdriver from above through a hole in the attachment
into a hole in the fixture of the sanding disc wheel (Fig. 74).
19Insert the bearing unit of the sanding disc wheel into the at-
tachment.
20Screw the countersunk screws on the attachment into the
bearing unit of the sanding disc wheel (Fig. 75). Make sure
that the bearing unit is correctly seated in the attachment.
Then tighten the countersunk screws firmly.
21Tighten the V-belt, as described in detail in Section 7.3, by
pulling the attachment all the way forward until you feel a
slight resistance.
Fig. 72 Install the five screw including washers for fas-
tening the attachment to the fan housing. Do not
tighten the screws firmly!
Fig. 73 Inserting the belt disc into the V-belt.
22With 3 to 4 additional rotations of the belt-tensioning screw,
you will then tighten the belt exactly as required.
Do not tighten the V-belt too tightly since this will increase
the degree of wear and tear on the belt pulleys and V-belts
unnecessarily!
23 Tighten the five screws with which the attachment is fastened
to the fan housing carefully.
24Place the UNICO down on its wheels again. Use a suitable
screwdriver to tighten the retaining screws of the bear unit
of the sanding disc wheel once more.
UNICO 01.02.2013
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Fig. 74 For simplified assembly, insert a screwdriver from
above through a hole in the attachment into a hole
in the bearing unit of the sanding disc wheel.
Fig. 75 Using the countersunk screws to tighten the bear-
ing unit of the sanding disc wheel.
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7
MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
7.5 REPLACING THE GUIDE ROLLERS
The best way to achieve the usual good sanding results is by replacing the guide rollers in pairs.
Use only original LÄGLER® guide rollers (part number in Section 11, Spare parts).
1 Switch off the machine.
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
Fig. 76 Tilt the UNICO over to the left-hand side and set
it down carefully.
Fig. 77 Place the UNICO down on the left-hand side only.
3Place the UNICO on its side by grabbing the machine by the
handlebar on the right-hand side and then tilt the machine
over to the left-hand side (Fig. 76) and set it down carefully.
Always set the UNICO down on the left-hand side (Fig. 77)!
This will prevent damage to the floor.
4Undo the star grip screws on the guide roller arms of the
fan housing and pull the guide rollers out of the fan housing
(Fig. 78).
5Install the new guide rollers and then adjust them as described
in Section 4.6, Adjusting the guide rollers.
7.6 REPLACING THE WALL-PROTECTING WHEEL
Use only original LÄGLER® wall-protecting wheels (part number in
Section 11, Spare parts).
1Switch off the machine.
Fig. 78 Undoing the star grip screw and removing the
guide rollers from the fan housing.
Fig. 79 Remove the screws on the wall-protecting wheel
bracket and then remove the complete wallprotecting wheel.
38
2 For safety reasons, always pull the power supply plug out
of the socket to prevent the machine from being started up
unintentionally!
3 Remove the two screws with which the wall-protecting wheel
is fastened to the attachment and then remove the complete
wall-protecting wheel (Fig. 79).
4Use an Allen key to remove the screw in the centre of the
wall-protecting wheel.
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7
MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
5 Remove the old wall-protecting wheel.
6 Insert the bushing into the new wall-protecting wheel and
then place this wheel with one washer on each side onto the
wall-protecting wheel bracket. Make sure that the centre of
the wheel is situated over the nut in the bracket.
7Rotate the screw through the hole of the bushing into the nut.
7.7 REPLACING THE FLUORESCENT TUBE
Whenever the fluorescent tube is defective, it must be replaced.
Use only original LÄGLER® fluorescent tubes (part number in Sec-tion 11, Spare parts)
Let the light cool off before you proceed as follows:
1 Switch off the machine.
2 Always pull the power supply plug out of the socket before
performing any work on the electrical equipment!
3 Swivel the working light upward (Fig. 80).
4 On the plastic fixture housing of the working light, press the
two clips together that hold the fluorescent tube and then
remove the fluorescent tube carefully (Fig. 81).
5Wrap a cloth or similar item around the fluorescent tube and
then pull the fluorescent tube of the fixture. If appropriate,
move the fluorescent tube back and forth carefully. Do not break the fluorescent tube. You could become injured by
broken pieces of glass or you could also damage the floor
(Fig. 82).
6Insert a new fluorescent tube. You must feel the fluorescent
tube snap into place.
Fig. 80 Swivel the working light upward.
Fig. 81 Press the two clips on the fixture housing together
and then remove the fluorescent tube carefully.
7Insert the fluorescent tube again. Make sure the two clips
snap into place properly. Adjust the working light according
to your requirements (Section 4.10, Adjusting the working light).
UNICO 01.02.2013
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Fig. 82 Pull the defective fluorescent tube out of the
fixture carefully.
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REGULAR MAINTENANCE AND TESTING
Regular maintenance and testing
in accordance with
accident prevention regulations
WARNING!
Tests and testing intervals must comply
with and be performed in accordance
with the applicable regulations and legal
requirements in your country!
8
The electrical operating equipment and machine parts must be
inspected at least once a year by a qualifi ed electrician with respect
to electrical and mechanical safety, then be repaired as required.
Afterwards, the operational safety must be confirmed by the attachment of an inspection label on the machine (Fig. 83).
The elements required for the dust suction system must be checked
at least once per year by a qualifi ed expert and repaired as required.
The functional efficiency must also be confirmed.
Fig. 83 The inspection label on the switch box of the motor
confirms the electrical an mechanical safety of
the machine and indicates the next due inspection date.
WARNING!
In order to ensure the safety of the machines
and equipment (= working equipment), the
German Ordinance on Industrial Safety and
Health (BetrSichV) must be complied with
in Germany!
Ensure that only original LÄGLER® spare parts are used for maintenance work! You should only allow the customer service work to be
conducted by LÄGLER® or an authorized LÄGLER® service centre!
The service passport in these operating instructions (Section 12)
documents when and where your machine was serviced.
Enter the serial number and the year of manufacture of your machine on the back cover of these operating instructions (please see
the type plate)! If you do not do this, your service passport is invalid!
Make sure that the maintenance tasks in the service passport are
confirmed by filling in a corresponding field with the date, stamp
and signature.
REGULATIONS VALID IN GERMANY
The German Ordinance on Industrial Safety and Health (BetrSichV)
requires every employer to define the testing intervals on the work
equipment they provide according to a risk analysis and to document all of this.
40
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8
REGULAR MAINTENANCE AND TESTING
EXCERPT FROM THE BGV A3
§ 5 Inspections
(1) The employer must ensure that the proper condition of the
electrical systems and equipment is inspected
1. before using the equipment for the first time and after an
alteration or repair before being used again by an electrician
or under the supervision of an electrician and
2. at regular intervals.
The intervals are to be calculated in such a manner that defects
which must be handled are detected in a timely manner.
(2) The electrical engineering regulations relevant to the inspection
are to be followed.
(3) Upon request by the professional association, an inspection
log with specific entries is to be maintained.
(4) The inspection before the first commissioning as per paragraph
1 is not required if the employer receives confirmation from the
manufacturer or installer that the electrical systems and equipment have been correspondingly procured in accordance with
these accident prevention guidelines.
NOTE:
• All LÄGLER® machines and electrical
equipment are subjected to an electrical
inspection as well as a thorough visual
and functional test before they leave
the factory.
• A recurring inspection of the machines
and electrical equipment must be
conducted in Germany at certain
intervals.
• LÄGLER® recommends using the
guidelines of BGV A3 for inspections
and inspection intervals.
• You can, of course, arrange for repairs
and recurring inspections of LÄGLER®
machines to be conducted by the
LÄGLER® service department.
Table 1B: Recurring inspections of portable electrical equipment:
Systems/equipment (which are to be inspected)
• portable electrical equipment (insofar as is used)
• extension and device connection cables with plugs
• connection cables with plugs
• movable cables with plugs and fixed connections
Inspection interval
Every 6 months as a reference value, 3 months on construction
sites*).
If an error rate of less than 2% is reached during the inspection,
the inspection interval can be extended to a maximum of 1 year
(valid for machines on construction sites, in production facilities
and workshops).
*) See the BG information “Selection and Operation of Electrical Systems and
Equipment on Construction Sites” (BGI 608) for more details.
Type of inspection
The proper condition of the machines and equipment must be
inspected.
Inspector
Electricians or persons trained in electrical engineering when using
suitable measurement and inspection devices.
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TROUBLESHOOTING
Troubleshooting
WARNING!
RISK OF DEATH from electrical shock:
Work on the electrical equipment is to be
conducted exclusively by a qualified electrician! The machine must be switched
off and the power plug removed from the
socket during this work!
The circuit diagram valid for your machine
is located in the motor switch box!
RISK OF INJURY due to unsuitable parts:
Make sure that only original LÄGLER®
spare parts and original LÄGLER® accessories are used!
9
This section shows you how to remedy possible malfunctions. If
none of the measures listed here are successful, please contact
our service department, your retailer or your importer.
THE MACHINE IS NOT RUNNING
The machine does not start up
• Check the power supply and provide if necessary (Is the plug
of the extension cable in the socket? Is the coupling between
the motor cable and the extension cable detached? Cable
breakage?).
• Check the protection by fuses.
• Have the electrical equipment checked by an expert electrician (e.g. capacitor, self-locking, cables and switches).
• The machine has been switched off via temperature sensors
and must cool off.
The machine attempts to start up but is being restrained
• At low temperatures: Heat up the machine in a warm room to
room temperature.
• Undervoltage: Check the cable quality and cable length;
excessively small cable cross-sections (stranded conductor cross-sections smaller than 1.5 mm²) and excessively
long supply cables must be avoided; if appropriate, use a
transformer (part number 708.00.00.100 for 230 Volts).
• Check the V-belt tension adjust, if appropriate.
• Check the machine for clogged-up parts and deposits
clean, if appropriate.
• Check the driving elements for easy movement.
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9
TROUBLESHOOTING
THE MACHINE IS RUNNING BADLY
The machine is running but has no sanding capacity or only very
little sanding capacity
• At low temperatures: Heat up the machine in a warm room to
room temperature.
• Undervoltage: Check the cable quality and cable length;
excessively small cable cross-sections (stranded conductor cross-sections smaller than 1.5 mm²) and excessively
long supply cables must be avoided; if appropriate, use a
transformer (part number 708.00.00.100 for 230 Volts).
• Check the V-belt tension adjust, if appropriate.
• Check the machine for clogged-up parts and deposits
clean, if appropriate.
• Check the driving elements for easy movement.
• The setting angle of the sanding disc is too flat readjust
the guide rollers (Section 4.6, Adjusting the guide rollers).
• An incorrect or blunt abrasive is being used correct this
mistake.
The machine is vibrating extremely and is working loudly
• Check the abrasive for signs of damage.
• Check whether the abrasive is fastened in centred position
on the sanding disc wheel adjust, if appropriate.
• Check the V-belt tension adjust, if appropriate.
• Check the V-belt condition renew the V-belt, if appropriate.
• Check the V-belt pulleys for deposits clean, if appropri ate.
• Check the machine for clogged-up parts and deposits
clean, if appropriate.
THE MACHINE IS RUNNING WELL BUT IS GIVING OFF DUST
The sanding capacity and the sanding results are correct
• The dust bag is filled more than one-third empty the dust
bag.
• The dust bag is defective renew the dust bag.
• The dust bag is incorrectly installed correct this mistake.
• The Velcro sealing strip on the attachment is not correctly
installed correct this mistake.
• The Velcro sealing strip is defective renew the Velcro
strip.
• More than one sanding disc are installed correct this
mistake and readjust the guide rollers.
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9
TROUBLESHOOTING
The sanding capacity is not correct
• Check the V-belt tension adjust, if appropriate.
• Check the V-belt condition renew the belt, if appropriate.
• Check the machine for clogged-up parts and deposits
clean, if appropriate.
The sanding results are not correct
• The guide rollers are not correctly adjusted for the respective attachment readjust the guide rollers (Section 4.6, Adjusting the guide rollers).
• The machine guiding speed is too slow.
• Circular movements are not being carried with the machine.
• Excessive pressure is being applied to the sanding disc.
• Check the abrasive for signs of damage.
• Check whether the abrasive is fastened in centred position
on the sanding disc wheel adjust, if appropriate.
000.65.10.131Starting capacitor 130 µF, USA
199021.1008.000Washer
20000.65.62.150Dust cover
22465.63.52.105Fluorescent lamp ballast, 230 V / 50 CPS
465.63.62.105Fluorescent lamp ballast, 220 + 230 V / 60 CPS
465.63.61.105Fluorescent lamp ballast, 110 + 120 V / 60 CPS
239021.1005.000Washer
247983.1042.013Screw
26000.68.60.113Nut
27000.65.43.151Motor cable 3 x 1.5 mm²
28900.65.47.100Cover with seal
29465.65.48.105Cover seal
310127.1010.000Spring washer
326797.1005.900Washer
330125.0105.000Washer
42000.65.43.153Motor cable 3 x 1.5 mm², USA
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11
SPARE PARTS
50
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SPARE PARTS
ItemPart numberDescription
1425.01.01.200Attachment 105 mm
2000.70.13.044V-belt
425.01.00.200Attachment 105 mm, complete
3445.01.01.200Attachment 230 mm
4000.70.13.067V-belt
445.01.00.200Attachment 230 mm, complete
5465.01.01.200Attachment 350 mm
6000.70.13.092V-belt
465.01.00.200Attachment 350 mm, complete
70965.1005.810Screw
8465.01.52.100Sealing set
465.01.51.105Velcro by the roll (50 m)
10465.01.91.200Sanding plate, complete
13465.02.12.205Velcro disc 177 mm
465.02.06.105Felt disc
15465.02.05.100Paper tensioning screw
11
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11
SPARE PARTS
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11
SPARE PARTS
ItemPart numberDescription
1465.00.80.105Dust bag UNICO
2000.01.40.110MultiClip
3000.65.53.151Extension cable 3 x 1.5 mm², 10 m long
4000.01.20.010Respiratory protection mask P3
5000.93.11.041Hexagonal socket screw wrench 4 mm
6000.93.11.051Hexagonal socket screw wrench 5 mm
7000.93.11.061Hexagonal socket screw wrench 6 mm
10000.01.10.021Foldable earmuff type POCKET
11000.01.10.011Foldable earmuff type MUSIMUFF with FM radio
12701.10.00.100Impact tool
13702.00.00.200Parquet layer tool ZUGEISEN, small
14703.00.00.200Parquet layer tool ZUGEISEN, broad
15000.01.65.020Safety switch PRCD-S (for German mains supply)
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NOTES
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12
SERVICE PASSPORT
Service passport
Please enter the serial number and the year of manufacture of your machine on the rear side of these operating
instructions (see type plate)! Otherwise the service passport will not be valid!
This service passport is a document. Make sure that all the tests and maintenance work carried out on the machine
are confirmed by the servicing company here.
certified herewith, that the machine Generic denomination: Floor sanding machine
Function: Dry sanding of wooden floors
Model: UNICOSerial number: See type plateCommercial name: Edge sanding machine
fulfils all the relevant provisions of the specified above European Directive.
The machine also fulfils all the relevant provisions of the European Directive
Electromagnetic compatibility (2004/108/EG).
The following harmonized standards have been applied:
DIN EN ISO 12100: Safety of machinery - General principles for design - Risk assessment and risk reduction
DIN EN 60204-1: Safety of machinery - Electrical equipment of machines - Part 1
DIN EN 55014-1: Electromagnetic compatibility - Requirements for household appliances, electric tools and similar
apparatus - Part 1
DIN EN 55014-2: Electromagnetic compatibility - Requirements for household appliances, electric tools and similar
apparatus - Part 2
DIN EN 61000-3-2: Electromagnetic compatibility (EMC) - Part 3-2: Limits
DIN EN 61000-3-3: Electromagnetic compatibility (EMC) - Part 3-3: Limits
Güglingen-Frauenzimmern, February 1, 2013
Dipl.-Ing. (FH) Volker Wörner, Design Engineer
Person Responsible for Documents
Eugen Lägler GmbH, Kappelrain 2
D-74363 Güglingen-Frauenzimmern
No guarantee is provided for the contents of these operating instructions. No liability is assumed for errors or damages which arise from the use of these operating instructions. Subject to changes.
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