Lagler Trio User guide

Operation,
Maintenance, Safety
Operating instructions for the three disc sanding machine
THREE DISC SANDING MACHINE TRIO
TRIO
CAN
GB
NZ
USA
AUS
IRL

2
TRIO - MAIN COMPONENTS
Wing nut of cleaning slide
Filter unit
Dust suction hose
Fig. 1 Main components of the three disc sanding machine TRIO.
Handle
Pressure control
sensor
On/off switch
Dust bag box
Chassis
Power supply cable
Filter housing
Switchbox
Handle
MultiClip dust bag mounting
Motor
Sanding unit
Velcro sealing tape
Disposable dust bag
Transport support
for switch
Additional weight

3
1. Introduction...................................................................................................................................................................4
1.1 Machine features .........................................................................................................................................................4
1.2 Description of the machine .........................................................................................................................................4
1.3 Proper use.....................................................................................................................................................................5
1.4 Safety precautions .......................................................................................................................................................5
1.5 Safety devices ..............................................................................................................................................................6
2. Technical data ..............................................................................................................................................................7
3. Getting started..............................................................................................................................................................9
3.1 Preparing the machine ................................................................................................................................................9
3.2 Starting the machine..................................................................................................................................................10
3.3 Switching off the machine.........................................................................................................................................10
4. Working with the TRIO...............................................................................................................................................11
4.1 General information and tips.....................................................................................................................................11
4.2 Changing sanding gear..............................................................................................................................................12
4.3 Changing the sanding agent .....................................................................................................................................13
4.4 Working with milling discs ........................................................................................................................................13
4.5 Changing the dust bag ...............................................................................................................................................14
5. Transport and storage................................................................................................................................................16
5.1 Dismantling the machine...........................................................................................................................................16
5.2 Reassembly after transport.......................................................................................................................................17
5.3 Storage ........................................................................................................................................................................17
6. Maintenance work and replacement of wearing parts..........................................................................................18
6.1 Cleaning and care ......................................................................................................................................................18
6.2 Cleaning the filter.......................................................................................................................................................18
6.3 Dismantling and reassembly of the filter cartridge ................................................................................................19
6.4 Changing the tooth belt..............................................................................................................................................21
6.5 Changing the V-belt....................................................................................................................................................24
6.6 Changing the sealing felt on the cover of the sanding disc gear..........................................................................26
6.7 Changing the rubber bearings of the sanding disc gear........................................................................................28
7. Regular check-up and maintenance work according to accident prevention regulations and VDE ...............29
8. Troubleshooting..........................................................................................................................................................30
9. General safety precautions.......................................................................................................................................32
10. Circuit diagrams .........................................................................................................................................................35
11. Spare parts..................................................................................................................................................................38
12. Service pass ...............................................................................................................................................................51
13. Declaration of conformity..........................................................................................................................................52
TABLE OF CONTENTS

4
INTRODUCTION
1.1 MACHINE FEATURES
Figure 1 (on page 2) depicts the TRIO with the main components
designated. Please take a little time to familiarize yourself with the
machine.
1.2 DESCRIPTION OF THE MACHINE
The TRIO works with three sanding discs that are suspended in a
freely rotating support. The working area is fully covered by the
machine housing. The motor and switchbox are positioned vertically
on the machine housing. One of the plugs leads to the power supply,
the other to the on/off switch which can be positioned either on the
switchbox or below the guide handle. The chassis consisting of the
bracket with wheels, tubular, adjustable handle is mounted to the
sanding unit with two crossnut fasteners and can be removed for
transport purposes.
A dust separator is fixed to the chassis and connected to the dust
suction system of the sanding unit by a flexible suction hose. Dust
is separated by a coarse filter system and collected in the dispos-
able dust bag. Inside the dust bag box the dust bag is fastened to
the separator with a MultiClip. The transparent dust bag box can
be opened using two fasteners. The air coming from the separator
passes through a fine particle filter behind the perforated cover
before being blown out into the environment. A sensor checks the
air-pressure in the separator and a red warning lamp lights up when
the suction capacity is too low.
To return to the correct suction capacity, the cleaning slide must
be used to clean the fine particle filter.
Introduction
1
You have chosen a high quality product
made by LÄGLER. We wish you every suc-
cess working with the TRIO. The machine
has been designed and constructed up to the
latest state-of-the-art standards. You can be
assured that each and every machine we
produce is submitted to a thorough opera-
tional test before leaving our premises.
Please read this operating manual in its
entirety prior to working with your TRIO for
the first time. It contains important infor-
mation which will help you to operate the
machine safely and without any problems.
Should a specific point of interest to you not
be addressed in this booklet, please don’t
hesitate to contact our service department
or your LÄGLER dealer. They have completed
a highly qualified training course and are
thus thoroughly acquainted with all aspects
of TRIO. They will be more than happy to give
you all the help and advice you need.

5
INTRODUCTION
1.3 PROPER USE
The three disc sanding machine TRIO is suitable for the dry sanding
of all kinds of wooden floors or cork floors in a dry environment.
It may be used to apply viscous polish or cleaning agent, or to
wax polish the floor. Additional tools such as milling discs or steel
brushes are available for dry work on composition floor or other
sub-floors.
Do not use TRIO for any other purpose without agreement by the
manufacturer. No wet sanding!
1.4 SAFETY PRECAUTIONS
Please read the following paragraphs carefully and instruct your
personnel and colleagues accordingly. Otherwise you or they might
risk incurring health hazards or injuries.
The machine must not be switched on in a tilted position since you
could be seriously injured by the rotating discs!
Please use only original LÄGLER tools, accessories and spare parts.
Warranty will not be granted if parts from other manufacturers are
used! Otherwise, damage to the machine and the surface worked
upon or danger for the operator cannot be ruled out.
Make sure you fit the dust bag carefully and correctly to prevent
unnecessary and harmful dust emissions for the operator and the
environment.
Never work with the wing nut and cleaning slide of the filter unit
pulled up, and observe the filter cleaning instructions to prevent
clogging of the filter/separator system.
Clogging can otherwise make troublesome and time-consuming
cleaning work necessary.
Improper transport can cause damage to the machine.
In order to preclude any damages by fire or explosion, the dust
bag must be removed, sealed and deposited in a non-combustible
container outdoors after each work period!
Keep away from sources of fire.
Do not smoke when in a dusty environment (e.g. during work or
when emptying the dust bag) danger of dust explosion.
1
The TRIO three disc sanding machine can
only be used for dry sanding. Never use it
to carry out wet sanding jobs of any kind
(Mortal danger)!
Not to be used for wet sanding of any
kind!
When the machine is switched on, a con-
siderable residual risk must be taken into
account despite all the safety devices. For
this reason, never reach into rotating tools
and machine parts!

6
INTRODUCTION
Keep the power cable out of the working area to prevent mechani-
cal or electrical damage.
In order to prevent the motor being started unintentionally, the
power cable must be disconnected from the mains when the ma-
chine is switched off!
To protect yourself and the machine against faults in the main power
supply it is advisable to use a DI safety plug (order no. in Section
11, Spare parts).
As long as TRIO is operated properly, the machine operates well
within legal limitations and below maximum values for dust emis-
sion. As long as you change the disposable dust bag with great
care and according to the instructions printed on the bag, you are
not required to wear a P3 breathing mask (order no. in Section 11,
Spare parts).
1.5 SAFETY DEVICES
The following parts of the machine are safety devices and therefore
have to always be in a perfect working condition:
Velcro sealing tape = Protection against dust
Machine housing = Protection against tools
Dust bag box = Dust bag protection
Dust separator = Protection of the filter element, protection
against dust
1

7
Manufacturer ................................................... Eugen LÄGLER GmbH
Machine type ....................................... Three disc sanding machine
Serial number ...............................................................see type plate
Year of manufacture .....................................................see type plate
Motor type ..................................................... Single-phase AC motor
Voltage .......................................................................... 230 V or 220 V
Frequency ................................................................ 50 or 60 Hz (CPS)
Power output ............................................................................ 1.8 KW
Fuse ................................................................................................16 A
Insulation class .................................................................................. F
Protection class ...........................................................................IP 54
Safety devices...............................................Zero voltage triggering,
Temperature switch as
overload protection in the motor
Capacitor ...................................................................................... 40 µF
Sanding gear diameter ...............................................200 mm (7 7/8“)
Speed of sanding disc
- with 50 Hz (CPS) motor............................... approx. 600 1/min (rpm)
- with 60 Hz (CPS) motor............................... approx. 720 1/min (rpm)
Weight of sanding unit .................................................54 kg (119 lbs)
Weight of chassis/extraction element .........................24 kg (53 lbs)
Total weight .................................................................. 78 kg (172 lbs)
Overall length ............................................................. 870 mm (34 ¼“)
Overall width ............................................................... 490 mm (19 ¼“)
Overall height ................................................................. 990 mm (39“)
Filter dimension ......................................... 1.43 m² (15.4 square feet)
Filter class ...........................................................................................C
Running time after shut off .....................................................< 5 sec.
Dust emission in working area
(according to DIN 33892) ..........< 0.2 mg/m³ (0.0024 gr. / cu. yd.) air
Noise emission in working area,
(measurement taken 1.5 m (5 ft.) above floor at operator’s ear)
Sanding of beech parquetry
Sanding paper grain 80 .......................................................80 dB(A)
Removal of glue residue
- using milling discs ............................................................80 dB(A)
- using steel brushes ..........................................................80 dB(A)
Tolerance for all measurements............................................. 4 dB(A)
TECHNICAL DATA
Technical data
2
Note on noise emission:
The values given are emission measurements. It
is important to note that these values cannot de-
scribe the entire noise level at the working place.
Although there is of course a relation between
emission and entire noise level, you cannot con-
clude if additional precautionary measures are
necessary. The entire noise level is influenced
by factors such as the duration of the emission,
quality of the working area, other noise sources
like other machines or processes. Legal noise
levels may even differ from country to country.
This information is given in order to allow users
a better estimation of the risks of noise.
Filter examination certificate available on
request.
Note:
The above-mentioned motor data refers to the
machines used in the Federal Republic of Ger-
many or USA. Exported machines could have
different data which can be found on the motor
type plate.

8
Application fields
• Wooden floor finishing
• Intermediate varnish sanding
• Refurbishing pre-fabricated parquet
• Sanding cork floors, mastic and filler surfaces
• Roughing subfloors
• Removing dirt, glue, carpet and felt residue
• Application of cleaning agents, polish and cold wax
• Dry polishing of the surface
Not to be used for wet sanding jobs of any kind!
Basic configuration
TRIO machine ready to use, 1 supplementary weight 9 kg, 1 set
of sanding plates for Velcro discs and mesh discs, extension ca-
ble 10 m, 3 x 2.5 mm² with strain relief; 25 dust bags; 1 MultiClip;
1 Phillips screwdriver; 1 closed mouth wrench; 2 open end wrenches
SW 17; 1 hex. socket screw wrench 4 mm; 1 hex. socket screw
wrench 5 mm; 1 hex. socket screw wrench 6 mm, 1 operating in-
structions.
Special accessories
3 milling discs with 3 reversible holders each, 3 brush discs, 3 steel
brushes.
Wearing parts or safety-related parts
Please check the condition of the wearing parts listed below at
regular intervals to make sure you are working with a safely func-
tioning and optimally adjusted machine at all times:
• Replace extension cable if damaged
• Replace power cable if damaged
• Replace switch if damaged
• Replace Velcro sealing tape if damaged
• Replace MultiClip if damaged
• Replace V-belt when worn out
• Replace rubber jig when worn out
• Replace pad base of mesh sanding plate when worn out
• Replace sealing felt on cover when worn out
TECHNICAL DATA
2
The relevant part numbers for the special
accessories and wearing parts can be found in
the spare parts lists in Section 11.

9
This paragraph contains instructions on how to put your TRIO ma-
chine into operation at the workplace. In order to prevent damage
and malfunctions it is necessary to strictly stick to the sequence
of steps indicated below.
Before you start your first job with TRIO you have to receive in-
struction.
3.1 PREPARING THE MACHINE
1Unpack the machine carefully. Take care to deposit the pack-
aging materials that are no longer required in an environmen-
tally-friendly way.
To ensure safe dispatch of the machine, the packaging should
be used for transport purposes.
2After unpacking the machine, release the securing grip of the
handle, press handle forward and pull, securing grip back into
its prior position (Fig. 2).
3While holding on to the handle, carefully tilt the machine back-
wards into a horizontal position. Make sure that the machine
gets to rest safely on the guide tube and the two protective
cushions. Now the sanding gear is accessible from the front
(Fig. 3). Make sure the machine is in a safe position!
4Mount the gear of your choice by placing one of the three
locking bolts into the rubber jig and then fitting the other two
bolts into their respective jigs. Then press gear onto the bear-
ing as far as it will go (Fig. 4).
5Bring the machine back into vertical position so that the
sanding gear is resting flat on floor surface. Adjust the handle
height to your convenience.
6Open the dust bag box by turning the two fasteners upwards;
open up the movable half of the dust bag box.
GETTING STARTED
Getting started
Fig. 2 To tilt the machine, release the clamping lever of
the handle first and press the handle forward.
Fig. 3 Carefully tilt the machine backwards to be able
to access the gears. Make sure the machine is
in a safe position!
Fig. 4 Place one of the three bolts one of the jigs, fit
others into their respective jigs, press the gear
onto the bearing as far as it will go.
3
ATTENTION!
Make sure the gear is in place correctly. It must slide in place
with a perceptible click. Always use three gears of the same
type!

10
GETTING STARTED
7Check to make sure the dust bag is placed correctly on the
neck of dust separator. The side of the bag with the print on
it must be facing you.
8If there is no dust bag attached to the dust separator, proceed
according to Section 4.5, Changing the dust bag.
9Close the dust bag box and lock it by turning the two fasteners
back to their downward position.
10 Fix the Velcro sealing tape around the bottom edge of the
machine housing in such a way that the two loose ends meet
on the rear side. For optimum suction, there should be a gap
approx. 1 mm wide between the lower edge of the sealing tape
and the floor.
11 Connect the plug of the machine’s power cable to the jack of
the extension cable.
12 Connect the plug of the extension cable into a safety wall
socket with adequate fuse protection and a voltage of 230 V
(or 220 V). For even more safety, we recommend using a DI
safety plug (order no. in Section 11, Spare parts).
The machine is now ready for use.
3.2 STARTING THE MACHINE
The machine can be started up after these preparations have been
completed. Before you do this, though, it is necessary to give the
sanding gear a little leeway. This is achieved by tilting the machine
just slightly backwards using the black handle and starting the
machine by pushing the green button on the on/off switch.
Please note that the sanding gear should not completely lose contact
with the floor when the machine is started up. On the other hand, if
the machine is switched on without tilting it first, it will not run.
3.3 SWITCHING OFF THE MACHINE
To switch the machine off, press the red button on the on/off switch.
Keep hold of the machine until the sanding gear comes to a com-
plete standstill.
3
ATTENTION!
Do not use unnecessarily long extension
cables and beware of underpowered, inad-
equately protected or otherwise hazardous
electrical power sources. Only use safety
sockets!
Prior to carrying out any work on the tools,
the plug must be removed from the mains
socket!

11
4.1 GENERAL INFORMATION AND TIPS
You may use your TRIO for many a wide range of dry floor treat-
ment.
For the first sanding of newly laid parquet it is advisable to use the
HUMMEL with sanding agents of up to 60 or 80 grain, whatever the
job demands. The choice of sanding agent depends on the kind of
wood involved, initial run, type of sealing and the required surface
finish. Always only use half-decked diffuse sanding papers.
With the TRIO, you should always begin with 60 grain sanding
discs. In the case of a poor first run, the amount sanded off can
be increased by sanding without the flexible Velcro rings. As with
belt sanding, the first run has to eliminate all the signs of previous
sanding jobs!
Mesh discs must be used for intermediate varnish sanding. The
choice of grain depends on the varnish used, the varnishing speed
and the required finish.
For cork floors, use 60 grain discs for your first run and 80 grain discs
for the second. Intermediate varnish sanding and sanding of cork
and rubber floors should be done without the additional weight.
Suction the dust from the floor thoroughly after each sanding proc-
ess. Keep the running wheels of the machine clean.
Further important and interesting information about sanding wooden
floors can be found in the LÄGLER application techniques brochure
„Sanding wooden floors“!
WORKING WITH THE TRIO
Working with the TRIO
4
Further information can be obtained free of
charge: within Germany
- Phone: 0800 / 52 34 537
- Fax: 0800 / 48 66 353
within USA
- Phone: [phone]
or
- Phone: +49 - 7135 - 98 90-0
- Fax: +49 - 7135 - 98 90-98
- e-mail: [e-mail]
- Internet: http://www.laegler.com
The machine must never be used for wet sanding jobs of any
kind!

12
WORKING WITH THE TRIO
4.2 CHANGING SANDING GEAR
Depending on the different types of work to be done you may have
to change the sanding gear. To do this, proceed as follows:
1Switch the machine off.
2 Disconnect power supply before commencing any work on
the machine; this will prevent inadvertent motor action!
3Release clamping lever of the handle, press handle for-
ward and pull the clamping lever back into its prior position
(Fig. 5).
4While holding on to the handle, carefully tilt the machine back-
wards into a horizontal position. Make sure that the machine
gets to rest safely on the guide tube and the two protective
cushions (Fig. 6). Make sure the machine is in a safe posi-
tion!
5To remove gear, grasp its edges with your fingers and pull it
out of the rubber jigs of the bearing (Fig. 7).
Never use a screwdriver or a chisel for this job as this could
otherwise cause damage to the discs or the machine.
6Mount the gear of your choice by placing one of the three
locking bolts into rubber jig and then fitting the other two bolts
into their respective jigs. Then press gear onto the bearing as
far as it will go (Fig. 8).
7Bring the machine back into vertical position so that the
sanding gear is resting flat on floor surface. Adjust the handle
height to your convenience.
Fig. 7 Grasp the gear edges with your fingers and pull
it out of the rubber jigs.
Fig. 5 To tilt the machine, release the clamping lever
first and press the handle forward.
Fig. 6 Tilt the machine backwards so that you can ac-
cess the gears. Make sure the machine is in a
safe position!
Fig. 8 Place one of the three bolts into the hole of one
jig, fit the others respectively and press the gear
on as far as it will go.
4
ATTENTION!
The gear must fit tightly on the bearing and slide into place with
a perceptible click. Always use three gears of the same type!

13
WORKING WITH THE TRIO
4.3 CHANGING THE SANDING AGENT
Always disconnect power supply before commencing any work on
the machine; this will prevent inadvertent motor action!
If you want to work with mesh sanding discs you must first remove
the three flexible Velcro adhesive rings and replace them by normal
pads. Place the mesh disk on the pad base. Insert the plastic plug
through the mesh into the central hole in the universal disk (Fig. 9).
You use this plug to fasten sanding pads, too (Fig. 10).
To remove worn mesh discs, grasp beneath the mesh using both
hands and pull this evenly off the sanding disk together with the
plug.
If you want to work with sanding paper, convert the universal disk
using the flexible Velcro adhesion discs. For increased sanding
depth, place the sanding paper directly on the universal disk. To
replace worn sanding paper, simply pull the sanding paper off the
flexible base or universal disk (Fig. 11). Now place the new sand-
ing paper in the center of the base or the universal disk and press
it in place.
4.4 WORKING WITH MILLING DISKS
The optional milling discs of the TRIO are used for subfloor treat-
ments and processing. The discs are mounted in the same way as
the sanding discs for mesh or conventional sanding discs.
The milling discs are equipped with six or three holders for carbide
blades which are equipped with one or two carbide blade and a
special screw to adjust cutting depth. Depending on the quality
of the flooring can thus set the gears more or less aggressive ac-
cordingly.
To do this proceed as follows:
1Switch the machine off.
2 Always disconnect power supply before commencing any
work on the machine; this will prevent inadvertent motor
action!
Fig. 10 The sanding pads are also fastened using the
plastic plug.
Fig. 9 The mesh discs are fixed quickly and securely to
the pad base using the plastic plug.
Fig. 11 Do not remove the base when removing worn-out
sanding discs.
Fig. 12 Aggressive adjustment of the milling disc with
special screw for working depth turned in.
4

14
WORKING WITH THE TRIO
3Remove the milling disc from the machine (see Section 4.2,
Changing sanding gear).
4Loosen the counter nut SW 13 on the top edge of the milling
disc for the holder to be adjusted. Use the TORX screwdriver
in the shaft of the thread to keep the adjustment screw in
position.
5Use the TORX screwdriver to adjust the adjustment screw.
The carbide plate should be mounted in such a way that you
can check the setting.
6Tighten the counter nut again. Use the TORX screwdriver again
to keep the adjustment screw in position.
4.5 CHANGING THE DUST BAG
The disposable dust bag must be removed when it is full. Do not work
with an overfilled bag, otherwise the dust emission in your working
area will increase to a level that no longer fulfils the requirements
for dust load at the workplace.
Please note that each dust bag can only be used once.
Make sure you use the original LÄGLER dust bags only (order no. in
Section 11, Spare parts). All other bags or sacks are inadequate.
1Switch the machine off.
2 Remove the plug from the mains socket!
3Clean the filter element of the dust separator as described in
Section 6.2, Cleaning the filter.
4Open the dust bag box by turning the two fasteners upwards;
open up the movable half of casing.
Fig. 13 Less aggressive adjustment of the milling disc with
special screw for working depth turned out.
Fig. 14 You can use 3 or 6 holders on one milling disc. Each
holder has to have at least a reversible carbide
blade.
4
Make sure there is a carbide reversible blade on every insert. Other-
wise the holder will be destroyed. Make sure that the equipment of
carbide blades and holders is symmetrical. Make sure all screws are
tight before you start working!

15
WORKING WITH THE TRIO
5Loosen the MultiClip by opening the nut, and remove it.
6Carefully pull the full dust bag from the neck of the dust sepa-
rator.
7Pull cover foil from adhesive strip on flap near the opening of
the dust bag.
8Fold the flap over the opening of the dust bag and seal the bag
(Fig. 15).
9Slip the opening of new dust bag over the neck of the dust
separator. The side of the dust bag with the print on it must
be facing you (Fig. 16).
10 Circle the threaded strip of the MultiClip around the neck of
the dust separator, insert through lash-on piece, then fasten
by turning nut (fig. 17).
11 Close the dust bag box and lock it by turning the two fasteners
back in downward position.
Fig. 15 Pull cover from the adhesive strip and seal the
bag. The dust bag must be deposited in the open
air!
Fig. 16 Make sure the dust bag is in the correct position
in the container (print towards you, adhesive strip
towards the rear).
Fig. 17 Tighten the MultiClip threaded strip and screw the
nut carefully.
4
ATTENTION!
In order to preclude any damages by fire or explosion, the dust
bag must be removed, sealed and deposited in a non-combustible
container outdoors after each work period! Dust-free sealing of the dust bag is only possible
when the dust bag has been mounted without any
wrinkly on the neck of the dust separator.

16
TRANSPORT AND STORAGE
Transport and storage
5.1 DISMANTLING THE MACHINE
For transport purposes the machine can be dismantled into two
pieces: chassis (frame with wheels, guide tube and dust separator)
and sanding unit (machine casing with motor and sanding gears).
Please make sure that sanding unit remains in an upright position
during transport. It is necessary for the motor to stand vertically
on top of the gear casing.
All parts of the machine must be secured during transport in the
truck or similar in such a way that they can not move or topple over.
When manually transporting the TRIO over roads and paths use LÄ-
GLER’s TransCart to protect the gear and wheels against damage.
The TRIO three disc sanding machine is dismantled as follows,
please stick precisely to the suggested sequence of steps:
1Switch the machine off.
2 Remove the plug from the socket!
3Loosen the cable plug of the sensor on the on/off switch by
turning the ring nut; pull out plug (Fig. 18).
4Remove the on/off switch from the chassis and hook it into
transport support on motor switchbox (Fig. 19).
5Remove the dust suction hose from the neck of the dust sepa-
rator or the neck of gear casing.
6Loosen the two lateral crossnut fasteners on the casing and
roll the chassis backwards in an upright position (Fig. 20).
Fig. 19 Hook the on/off switch into the transport support
on the motor switchbox.
Fig. 20 The chassis can be moved backwards once the
crossnut fasteners have been loosened.
Fig. 18 Loose the ring nut and remove the plug from the
mains.
5

17
5.2 REASSEMBLY AFTER TRANSPORT
When reassembling your TRIO after transporting it please proceed
according to the following sequence:
1Roll chassis into attachment position so that the two fasteners
can be homed in.
2Tighten the two crossnut fasteners firmly.
3Remove the on/off switch from motor switchbox and hook it
into support on the chassis.
4Insert the plug of the sensor into the on/off switch and lock
this fasten connection by turning the ring nut. Make sure
the nose of the plug is inserted in the groove of the socket
(Fig. 21).
Machine will not start as long as this plug is disconnected!
5Mount dust suction hose to the neck of the dust suction and
gear casing.
5.3 STORAGE
If the machine is to be stored for a longer period, make sure it is
stored in a dry, frost-free room which is not subject to great fluctua-
tions in temperature.
Fig. 21 Make sure that the nose of the plug is inserted
into the groove of the socket.
TRANSPORT AND STORAGE
Professional tip:
Remove the sanding gear from the machine when
the machine is not to be used for longer periods,
because otherwise the machine weight can dam-
age the flexible sanding disc base.
ATTENTION!
Always store your machine without a dust bag or with an empty
one, never with dust in the bag (danger of fire!).
5

18
Maintenance work and replacement
of wearing parts
MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
Certain maintenance jobs ought to be performed from time to time,
at the latest, however, when damage is established or the red LED
of the pressure control sensor lights up. Use only LÄGLER original
spare parts. Perform the job in a clean, brightly lit working environ-
ment and follow the directions given in this manual. In the tool bag
you will find all the tools needed for the jobs described below.
6.1 CLEANING AND CARE
Never use solvent-based cleaning agents.
Before starting work you should carry out the following care and
maintenance steps to guarantee proper machine function and a
first-class sanding result:
• Clean the running wheels on the machine.
• Carry out a visual inspection of the electrical equipment (extension
cable, plug, couplings).
• Check the sanding discs, rubber jigs and flexible bases of the sanding
discs for damage.
6.2 CLEANING THE FILTER
In general the machine’s filter should be cleaned after each dust
bag change; at the latest this should be done when the red LED of
the pressure control sensor lights up. If this happens while you are
in the middle of a sanding job you may as well finish a half-trodden
path first.
If you do not clean the filter in spite of the red light indicating that
this is necessary, the suction performance will become less and
less efficient with time, and the dust emission will increase. This,
of course, will mean a higher health risk for the machine operator.
Furthermore, the cleaning of filter cartridge and dust separator will
prove troublesome and time-consuming.
6
ATTENTION!
Comprehensive maintenance work, particu-
larly work on the electrical equipment, must
be done by an expert for safety reasons!
Maintenance work on the electrical equip-
ment, motor or pressure control sensor may
only be carried out when the machine is
switched off and the mains plug discon-
nected from the wall socket. Otherwise
mortal danger!
Never blow compressed air into the dust
bag box or the neck of the suction hose on
the dust separator as otherwise the highly
sensitive pressure control sensor could be
damaged.

19
MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
Fig. 22 Move the cleaning slide up and down while con-
tinuously turning the wing nut.
To clean the filter proceed as follows:
1 Switch your machine off.
2Grasp and turn the wing nut on top of the filter unit and gently
pull it upwards, moving the cleaning slide integrated in the
filter unit (Fig. 22).
3Now push the cleaning slide gently back down while still
continuously turning the wing nut. You will see dust dropping
into the dust bag.
4Repeat this process several times until no more dust drops
into the dust bag.
5Once you have finished cleaning, make sure the cleaning
slide is pushed as deeply as possible back into the filter unit
(Fig. 23). Otherwise the filter will be burdened with more dust
than necessary and will have to be cleaned more often.
6You can now switch the machine back on again.
If you didn’t succeed in cleaning the filter with the cleaning slide or
if the intervals in between cleaning become too short, your filter is
probably clogged with deposits such as old varnish or glue residue
and must be dismantled for thorough cleaning. The next section
describes the dismantling and reassembly of the filter cartridge.
6.3 DISMANTLING AND REASSEMBLY OF THE
FILTER CARTRIDGE
Use only original Lägler filter cartridges (order no. in Section 11,
Spare parts).
This section describes how to dismantle and reassemble the filter
cartridge. This can become necessary when the filter is totally
clogged by deposits and these cannot be removed by the normal
cleaning method or if the filter has been damaged in any way.
1 Switch the machine off and disconnect it from the power
supply!
2Loosen the cable plug of the sensor on the on/off switch by
turning the ring nut and pull the cable plug off (Fig. 24).
Fig. 23 Push the cleaning slide as deep as possible into
the filter unit (1.). Then you can turn the machine
back on again (2.).
Fig. 24 Loosen the ring nut and remove the cable plug.
6
Since wood dust deposits can be released when
the dust separator is dismantled, you have to
wear an appropriate protective mask for all work
on the dust separator system. Use the LÄGLER
protective mask P3, for example.

20
Fig. 26 Place a board between the closed dust bag box
and the chassis.
MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
Fig. 27 Then remove the four cap nuts on the cover of the
separator.
Fig. 28 Remove the cover and remove the filter insert.
3Unhook the on/off switch from the chassis and onto the trans-
port holder on the switchbox (Fig. 25).
4Remove the dust suction hose from the neck of the dust sepa-
rator.
5Put a approx. 22 mm (7/8“) board (e.g. piece of parquet flooring)
between the closed dust bag box and the chassis to prevent
the dust bag box from falling off when the top filter cover is
removed (Fig. 26).
6Remove the four cap nuts on the cover of the separator (Fig.
27) and lift off the cover of the dust separation system in one
straight move (Fig. 28).
7Lift the filter insert out of the filter casing (Fig. 28). Clean it
or replace it by a new one. Only use original LÄGLER filter
cartridges (order no. in the Section 11, Spare parts).
Reassembly is in reverse order:
1Before you insert the new filter, make sure the rubber seals
are in the groove on the filter element (Fig. 29).
2Slide the filter onto the four screws from above. Make sure
not to damage the filter. The system will not work properly
otherwise (Fig. 30).
3Now the cover can be replaced. Insert the perforated metal
into the cover in such a way that it touches the inside of the
ridge.
4Put the washers on the screws which project out of the cover
and put the cap nuts back on. Only place these on loosely,
don’t tighten them (Fig. 31).
5If necessary, open the flap on the dust bag box for access to
the bottom part of the fourth screw and move it around until
it fits.
Fig. 25 Hook the on/off switch into the transport holder
on the switchbox.
6