Lagler HUMMEL User manual

BELT SANDING MACHINE HUMMEL®
English / Englisch
HUMMEL®
www.laegler.com
00.100.20.002 01.01.2019 *00.100.20.002*
Operating Instructions
Translation of original operating instructions
for the belt sanding machine

HUMMEL®01.01.2019
English / Englisch
CONTENTS
1 Introduction.....................................................................................................................................................................5
1.1 Features of the machine ................................................................................................................................................5
1.2 Description of the machine ...........................................................................................................................................5
1.3 Intended use of the machine.........................................................................................................................................5
1.4 Safety devices.................................................................................................................................................................6
1.5 Machine configuration...................................................................................................................................................6
1.5.1 Basic equipment...........................................................................................................................................................6
1.5.2 Optional equipment......................................................................................................................................................7
1.5.3 Wearing parts and safety-related parts ....................................................................................................................7
2 Hazard warnings and safety instructions ...................................................................................................................8
2.1 Hazard warnings.............................................................................................................................................................8
2.2 General safety instructions .........................................................................................................................................12
3 Technical data ..............................................................................................................................................................14
3.1 Data on type plate ........................................................................................................................................................14
3.1.1 Machine type plate ....................................................................................................................................................14
3.1.2 Motor type plate.........................................................................................................................................................15
3.2 Machine data................................................................................................................................................................16
4 Commissioning .............................................................................................................................................................18
4.1 Preparing the machine for operation .........................................................................................................................18
4.2 Connecting the power cable .......................................................................................................................................21
4.3 Switching on the machine...........................................................................................................................................22
4.3.1 Machines with single-phase AC motor (mains voltage 230 V and 220 V) ............................................................22
4.3.2 Machines with three-phase AC motor (mains voltage 400 V) ...............................................................................22
4.3.3 General........................................................................................................................................................................23
4.4 Switching off the machine...........................................................................................................................................24
5 Working with the HUMMEL®.....................................................................................................................................25
5.1 Application tips.............................................................................................................................................................25
5.2 Regulating the sanding drum pressure ......................................................................................................................26
5.3 Changing the sanding belt...........................................................................................................................................26
5.4 Emptying the dust bag..................................................................................................................................................29
6 Transport and storage..................................................................................................................................................31
6.1 Dismantling the machine before transportation .......................................................................................................32
6.2 Assembly after transportation ....................................................................................................................................35
6.3 Storage ..........................................................................................................................................................................36
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CONTENTS
7 Maintenance work and replacement of wearing parts ..........................................................................................37
7.1 Cleaning and care instructions...................................................................................................................................38
7.1.1 General........................................................................................................................................................................38
7.1.2 Dismantling and cleaning of drive unit ....................................................................................................................39
7.2 Lubrication ....................................................................................................................................................................41
7.3 Checking and setting the sanding belt tracking........................................................................................................41
7.3.1 Checking the sanding belt tracking..........................................................................................................................42
7.3.2 Setting the sanding belt tracking .............................................................................................................................43
7.4 Checking the machine setting.....................................................................................................................................45
7.5 Checking the dust pick-up...........................................................................................................................................46
7.6 Replacement of sanding drum ....................................................................................................................................46
7.7 Replacement of tensioning roller................................................................................................................................48
7.8 Replacement of rear wheel .........................................................................................................................................50
7.8.1 Replacement of rear wheel only...............................................................................................................................50
7.8.2 Replacement of complete rear wheel assembly.....................................................................................................51
7.9 Replacement of lateral wheels ...................................................................................................................................52
7.10 Replacement and tensioning of V-belts .....................................................................................................................53
7.10.1 Replacement of V-belts .............................................................................................................................................53
7.10.2 Tensioning of V-belts .................................................................................................................................................54
8 Regular inspection and maintenance work in accordance with accident prevention regulations .................57
9 Causes of faults............................................................................................................................................................59
9.1 The machine does not run or has switched off automatically.................................................................................59
9.2 The machine attempts to start up but is not able to do so.......................................................................................60
9.3 The machine runs but has no or very little sanding power capacity......................................................................61
9.4 The machine vibrates intensely and runs noisily......................................................................................................62
9.5 The machine runs but creates a great deal of dust..................................................................................................62
9.6 Sanding problems (waves, strips, grooves)...............................................................................................................63
10 Circuit diagrams...........................................................................................................................................................66
11 Spare parts HUMMEL®...............................................................................................................................................72
12 Service passport ..........................................................................................................................................................87
13 EC Declaration of conformity for machines (EC Directive 2006/42/EC) .................................................................88
WARNING! Death, severe physical injury or significant property damage can occur if the
corresponding cautionary measures are not taken!
CAUTION! Moderate to light physical injury or property damage can occur if the corresponding
cautionary measures are not taken!
ATTENTION! An undesired event can occur if the corresponding instructions are not followed!
Safety notes used in this operating instructions and their meaning:
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PARTS AND ASSEMBLIES
Fig. 1 Main features of the belt sanding machine HUMMEL®.
Cable support with strain relief ring
ON/OFF switch
Switch box
Lowering lever
Handle
Guide tube
Safety guard
Side cover
Lateral wheel
Drive motor
Belt guard
Bumper felt
Operating lever,
drive unit
Dust bag
Bracket
Machine housing
Wall-protecting roller
MultiClip for dust bag fixture
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INTRODUCTION
1.1 FEATURES OF THE MACHINE
Figure 1 shows the most important components which make up the
HUMMEL®. We recommend that you take some time to become
familiar with the machine.
1.2 DESCRIPTION OF THE MACHINE
The HUMMEL®belt sanding machine operates with a contact
sanding drum featuring a specially profiled rubber coating. The
belt tensioning fixture with integrated automatic belt guidance
is located vertically above the sanding drum. The work zone is
covered by the machine housing and detachable side cover. On
the machine housing, the electric motor is fixed in a motor bearing
bracket. The plug for connection to the mains is located at the
switch box of the motor. The motor switch with the switch positions
START / WORKING and TEST is located at the switch box. On the left
under the belt guard is the belt drive unit. The machine is moved by
means of a steering wheel at the back and two lateral wheels. Two
handles are attached to the guide tube, where the drum lowering
lever is also located and the cables and dust bag are attached.
1.3 INTENDED USE OF THE MACHINE
The HUMMEL®belt sanding machine is suitable for dry sanding
wooden and cork floors, plastic skating rinks and tartan running
tracks.
A specially equipped version of the machine can be used to sand
sheet metal surfaces.
Any application other than that described here is inadmissible
without the consent of the manufacturer!
Introduction
WARNING!
RISK OF DEATH from electrical shock:
The machine may never be used for wet
processing operations of any kind!
You have purchased a high-quality product
from LÄGLER®. We wish you a great deal
of success with your HUMMEL®. All
LÄGLER®products are subjected to a
thorough inspection before leaving the
factory.
Read these operating instructions
completely before working with the
HUMMEL®for the first time! 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
manual “Sanding of wooden floors”
(http://www.laegler.com) or contact our
service department, your retailer or your
importer.
1
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1.4 SAFETY DEVICES
The following parts of the machine are safety devices and must
accordingly be kept in perfect working order:
Sealing felt = Dust shield
Side cover = Dust shield, sanding belt protection
Machine housing = Sanding belt protection
Belt guard = V-belt protection
1.5 MACHINE CONFIGURATION
1.5.1 BASIC EQUIPMENT
• 1 Machine ready for operation
• 1 Operating instructions
• 1 Dust bag
• 1 MultiClip for dust bag fixture
• 1 Cable support
• 1 O-ring as a strain relief device
• 1 Extension cable, length 10 m (394”):
for single-phase AC motor 3 x 2.5 mm² (3 x 0.0039 sq.in.)
for three-phase AC motor 5 x 1.5 mm² (5 x 0.0023 sq.in.)
• 1 Tool bag
• 1 Closed mouth wrench, size 13 mm and size 10 mm
• 1 Open mouth wrench, size 17 mm
• 1 Hexagonal socket wrench, size 4 mm
• 1 Hexagonal socket wrench, size 5 mm
• 1 Hexagonal socket wrench, size 6 mm
• 1 Setting fixture
• 1 Box wrench
• 1 Respiratory protection mask, filter class P3
INTRODUCTION
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NOTE:
You will find the corresponding part
numbers for the optional equipment and
wearing parts in Section 11, Spare parts
HUMMEL®.
1.5.2 OPTIONAL EQUIPMENT
• Carrying handle
• TransCart
• Safety belt
• Foldable earmuff
• Safety switch for fault current PRCD-S (for German mains
supply)
1.5.3 WEARING PARTS AND SAFETY-RELATED PARTS
Check the condition of the wearing parts and the safety-related
parts mentioned below at regular intervals in order to be able to
work safely and optimally at all times.
Replace the following parts in case of wear and/or damage:
• Extension cable
• Motor cable
• ON/OFF switch
• Sealing felt
• MultiClip
• V-belts
• V-belt pulleys
• Belt tensioner
• Sanding drum
(in case of daily use, exchange every 1 - 2 years)
• Tensioning roller of the drive unit
(in case of daily use, exchange every 1 - 2 years)
• Guide rollers at the drive unit
• Guide roller at the machine housing
• Side cover
• Dust bag
• O-ring used as a strain relief
• Rear wheel
• Lateral wheels
INTRODUCTION
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2.1 HAZARD WARNINGS
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!
• Never connect the machine to hazardous electrical power
sources such as electrical installations that are too weak,
not fuse protected or without electrical grounding! Only use
safety sockets!
• 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 HUMMEL®)!
Observe the applicable regulations and legal requirements
in your country!
• All extensive maintenance work, especially on the electrical
equipment, must be conducted by a qualified expert for safety
reasons!
• The machine must be switched off and the power plug must
be removed from the socket during all maintenance work
and all 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®cables!
• The motor cable and the power cables must be protected
from mechanical and 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
cables against heat, oil and sharp edges!
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 col-
leagues accordingly! Otherwise these
persons could be exposed to danger
or injured!
• Keep these hazard warnings and
safety instructions in a safe place!
• Observe the applicable regulations
and legal requirements in your
country!
Hazard warnings and safety instructions
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RISK OF DEATH and RISK OF PROPERTY DAMAGE from unsecured
load:
• When transported in a car or the like, the machines and all
parts must be secured against sliding!
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,
emptying the dust bag or cleaning the machine!
RISK OF FIRE from sparks while sanding or from spontaneous
combustion:
• Prior to sanding a nailed or screwed floor all nails or screws
must be countersunk deeply enough so that they cannot be
sanded:
- Countersink the nails for example with a hammer and a
punch!
- Tighten the screws!
• 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
manufacturers of paint, oil and wax!
• Cloths, pads, et cetera which have been immersed in oil or
wax can spontaneously combust! Be certain to note the
warning notices of the manufacturers of paint, oil and wax!
• The dust bag must always be removed from the machine
directly 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 in non-combustible environment ( Section 5.4,
Emptying the dust bag)!
• Always transport and store used dust bags in closed and
non-combustible containers!
• Always transport and store the machine without dust bag!
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
WARNING!
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RISK OF FIRE from the overheating of the cables:
• Only the following motor cables and power cables may be
used:
- Machines with motor for mains voltage 220 V or 230 V:
Cables with three wires! Each wire must have a cross-
section of at least 2.5 mm² (0.0039 sq.in.)!
- Machines with motor for mains voltage 400 V:
Cables with five wires! Each wire must have a cross-
section of at least 1.5 mm² (0.0023 sq.in.)!
• The maximum cable length in order to connect the machine
to the mains supply must not exceed 20 m (790”)!
HEALTH RISK caused by dust:
• Make sure that the dust bag is properly fastened to the
machine!
• Do not use damaged, washed or repaired dust bags!
• Do not work with an overfilled dust bag ( Section 5.4,
Emptying the dust bag)!
• If the machine is operated correctly, the mandatory dust
emission values will not be exceeded! Empty the dust bag
outdoors! At the same time a respiratory protective mask (at
least filter class P2) must be worn!
• Always wear a respiratory protective mask (at least filter
class P2) when executing works which might create dust,
e.g. emptying of the dust bag or cleaning of the machine!
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
WARNING!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
RISK OF INJURY and RISK OF PROPERTY DAMAGE from rotating
tools and parts of the machine:
• For all operating conditions of the machine only one operator
is required! As a consequence, for safety reasons only
the machine operator must be in the working area while
operating the machine!
• Do not let children or other persons touch the machine or
cables and keep them out of the work area!
• 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 when tilted backward or
forward!
• The machine may not be started if the sanding drum is on
the floor!
• Never leave the operational machine unattended!
• Do not reach into rotating tools or parts of the machine!
• Do not wear any long articles of clothing or jewelry! These
could be caught by moving parts!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from uninten-
tional starting of the machine:
• The power plug must always 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 HUMMEL®( Section 11, Spare parts HUMMEL®)!
Warranty claims for foreign parts or damage caused thereby
cannot be accepted!
CAUTION!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
HEALTH RISK caused by noise:
• Use hearing protection when conducting work that produces
noise! Observe the applicable regulations and legal require-
ments in your country!
RISK OF PROPERTY DAMAGE:
• Never use any cleaning products which contain solvents!
• Do not store the unused machine on the sanding drum!
Otherwise the sanding media can cause scratches on the
ground or the sanding drum can be damaged!
• Never conduct a maintenance or a replacement of wearing
parts on the newly sanded wooden floor! Thus, you will avoid
scratches or other damage to the floor!
• Improper transport will result in damage to the machine!
2.2 GENERAL SAFETY INSTRUCTIONS
• Check your machines for damage!
Before using the machines, you must inspect the safety
devices 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 replaced by an
authorized service shop insofar as nothing to the contrary
is indicated in the operating instructions.
Regularly inspect the motor 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 ( part
numbers in Section 11, Spare parts HUMMEL®).
Damaged electrical components must be replaced by a
qualified electrician ( part numbers in Section 11, Spare
parts HUMMEL®).
Do not use the machine if it cannot be switched on and/or
switched off by using its switch.
CAUTION!
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HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
• 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.
- Keep the handles dry and free of oil and grease.
• 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 tidy!
Untidy work areas 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!
They work better and more safely in the power range noted.
• Do not bend too far over the machine!
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.
• Store your machines safely!
Store your unused machines in a dry, closed location out of
the reach of children!
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3.1 DATA ON TYPE PLATE
ATTENTION!
In order to receive the correct spare parts from us, please
specify in inquiries and spare part orders always the serial
numbers of your machines!
3.1.1 MACHINE TYPE PLATE
In order to be able to read the machine type plate of the HUMMEL®,
proceed as follows:
1The machine must be switched off ( Section 4.4, Switching
off the machine)!
2 Pull the power plug out of the socket!
3Open the belt guard (fig. 2)
4The machine type plate is located on the machine housing
below the belt tensioner (fig. 3).
The following technical data are specified on the machine
type plate (fig. 4):
1Manufacturer
2Serial number of machine (Mach.-No.)
3Year of manufacture (Year)
4Machine name (Type)
5Weight of machine in kilogram (Weight)
6Speed of sanding drum in 1/min (Rpm on drum)
7Country of manufacture
5Close the belt guard (fig. 5)!
Fig. 3 Machine type plate on machine housing.
Fig. 4 Data on machine type plate.
Fig. 2 Pull the power plug out of the socket and open
the belt guard.
7
5 6
Fußbodenschleifmaschine
Weight Rpm on drum
XX kg XXXX
Type
HUMMEL
Made in Germany
XXXXX-XX
12345
Mach.-No. Year
XXXXX-XX XXXX
Kappelrain 2
D-74363 Güglingen-Frauenzimmern
Tel. [phone] www.laegler.com
Eugen Lägler GmbH
1
2 3
2
4
TECHNICAL DATA
Technical data
3
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3.1.2 MOTOR TYPE PLATE
The motor type plate of the HUMMEL®is located on the switch
box of motor (fig. 6).
The following technical data are specified on the motor type plate
(fig. 7):
1Manufacturer
2Serial number of machine (Mach.-No.)
3Year of manufacture (Year)
4Motor size (Type)
5Required mains voltage in volt (V)
6Current consumption in ampere (A)
7Motor frequency in CPS (Hz)
8Motor power in kilowatt (KW)
9Motor speed in 1/min (Rpm)
10 Power factor cos phi (cos)
11 Insulation class (Insul. Cl.)
12 Protection class (Prot. Cl.)
13 Type of current
14 Country of manufacture
Fig. 6 Motor type plate on switch box.
Fig. 7 Data on motor type plate.
14
13
5 6 7 8 9 10
11 12
V A Hz KW Rpm cos
XXX XX XX XX XXXX 0.XX
Insul.Cl. Prot.Cl. Type of Current
B IP54 AC
Type
BG 112
Made in Germany
XXXXX-XX
12345
Mach.-No. Year
XXXXX-XX XXXX
Kappelrain 2
D-74363 Güglingen-Frauenzimmern
Tel. [phone] www.laegler.com
Eugen Lägler GmbH
1
2 3
2
4
TECHNICAL DATA
3
Fig. 5 Close the belt guard.
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TECHNICAL DATA
3.2 MACHINE DATA
Manufacturer Eugen Lägler GmbH
Machine type belt sanding machine
Machine name HUMMEL®
Serial number see type plate (fig. 3, fig. 6)
Year of manufacture see type plate (fig. 3, fig. 6)
Motor type single-phase AC motor
Voltage 230 V 220 V
230 V
220 V
(USA
version)
Frequency 50 Hz
(CPS)
60 Hz
(CPS)
60 Hz
(CPS)
Motor power 2.2 kW 2.9 kW
Necessary fuse protection of
mains supply
at least
16 A
at least
20 A
at least
20 A
Starting capacitor 60 µF 130 µF
Running capacitor 40 µF 40 µF
Motor type three-phase AC motor
Voltage 400 V
Frequency 50 Hz (CPS)
Motor power 4.0 kW
Necessary fuse protection of
mains supply at least 16 A
Insulation class B
Protection class IP 54
Safety devices
no-voltage release,
temperature switch as
overload protection in the
motor
Diameter of sanding drum 175.5 mm (approx. 6.9”)
Width of sanding drum 200 mm (approx. 7.9”)
Speed of sanding drum
- machine with motor 50 Hz (CPS)
- machine with motor 60 Hz (CPS)
approx. 2400 1/min (rpm)
approx. 2810 1/min (rpm)
Dimension of sanding belt 200 x 750 mm
(approx. 7.9” x 29.5”)
3
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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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.
Overall length of machine 1040 mm (approx. 40.9”)
Overall width of machine 360 mm (approx. 14.2”)
Overall height of machine 1020 mm (approx. 40.2”)
Weight of machine housing 41 kg (approx. 90 lbs)
Weight of motor 34 kg (approx. 75 lbs)
Weight of guide tube, complete 4 kg (approx. 9 lbs)
Overall weight of machine 79 kg (approx. 174 lbs)
Dust emissions at workplace
(Operation of the machine
according to the operating
instructions)
< 1 mg/m³
(approx. 0.012 gr./cu.yd.)
Workplace-related noise
emission values 76 dB(A)
Measurement uncertainty
constant of the noise emission
values
4 dB(A)
Vibration total value ahv
(measured at the handle) < 2.5 m/s²
TECHNICAL DATA
3
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COMMISSIONING
Commissioning
This section describes the procedure for commissioning the
HUMMEL®on site. In order to exclude the possibility of damage and
malfunctions, it is essential to proceed in the sequence outlined
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 PREPARING THE MACHINE FOR OPERATION
1Unpack the machine carefully. The bottom part of the supplied
transport crate makes a useful container for storage or
transportation of the machine ( Section 6, Transport and
storage). Please ensure that the packaging materials are
responsibly disposed of.
2Press the lowering lever at the handle downwards (fig. 8, 1).
3Insert the guide tube into the opening in the machine housing
and at the same time insert the upper rod into the lower rod
(fig. 8, 2).
4Carefully tighten the wing screw at the lower rod (fig. 9) and
the wing nut at the machine housing (fig. 10).
Fig. 8 When inserting the guide tube, make sure that
the upper rod of the lowering mechanism feeds
in correctly!
Fig. 9 After inserting the guide tube, carefully tighten
the wing screw at the lower rod.
Fig. 10 After inserting the guide tube, carefully tighten
the wing nut at the machine housing.
4
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COMMISSIONING
5Lift the sanding drum off the floor by turning the lowering
lever at the handle upwards (fig. 11).
6Hook the cable support into the bracket at the top of the
guide tube (fig. 12)
7Fasten the dust bag firmly using the cord and the MultiClip at
the end of the guide tube (fig. 13). Ensuring when mounting
that the opening of the guide tube is not closed.
8Release the cover lock (fig. 14, 1) and remove the side cover
on the right of the machine housing (fig. 14, 2).
9Pull the operating lever of the drive unit upwards (fig. 14, 3).
This will lower the tensioning roller.
10 Position the sanding belt on the tensioning roller of the drive
unit (fig. 15) and push it over the tensioning roller and the
sanding drum (fig. 16).
Fig. 12 Hook the cable support into the bracket at the
guide tube.
Fig. 13 Mount the dust bag using the cord (1) and the
MultiClip (2 and 3) at the end of the guide tube.
Fig. 14 Release the cover lock (1), remove the side
cover (2) and lower the tensioning roller by pulling
up the operating lever (3).
Fig. 15 Position the sanding belt on the tensioning roller
of the drive unit.
Fig. 16 Push the sanding belt far enough over the sanding
drum and tensioning roller so that the sanding
drum is fully covered by the sanding belt.
Fig. 11 Lift the sanding drum off the floor by turning the
lowering lever at the handle upwards.
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HUMMEL®01.01.2019
English / Englisch
COMMISSIONING
Fig. 18 Tension the sanding belt by lowering the operating
lever. Otherwise, damage or injury can occur!
11 Position the sanding belt so that it evenly covers the sanding
drum (fig. 17, A).
WARNING!
RISK OF FIRE from the formation of sparks while sanding:
Position B of the sanding belt in fig. 17 provoke sparking
during sanding! Avoid this without fail!
12 To tension the sanding belt, press the operating lever of the
drive unit downwards (fig. 18). Otherwise, damage or injury
can occur!
13 Connect the machine to the mains supply ( Section 4.2,
Connecting the power cable).
14 Before sanding, the precise tracking of the sanding belt
must be checked! Adjusted it if necessary ( Section 7.3,
Checking and setting the sanding belt tracking)!
CAUTION!
RISK OF INJURY and RISK OF PROPERTY DAMAGE from
rotating parts of the machine:
• Always tension the sanding belt before switch on the
machine (fig. 18)!
• Always lift the sanding drum off the floor before switch
on the machine (fig. 19)!
• Never reach into the area of the sanding belt while it is
running!
• During the test run, ensure that no objects randomly
positioned in the vicinity can be picked up by the sanding
belt and no other persons are in the danger area!
15 After the checking and setting of the sanding belt tracking
mount the side cover (fig. 20).
16 The machine is now ready for operation ( Section 4.3,
Switching on the machine).
Fig. 17 Position the sanding belt so that it evenly covers
the sanding drum (A). Avoid position B without
fail (RISK OF FIRE)!
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Fig. 19 Lift the sanding drum off the floor by turning the
lowering lever at the handle upwards.
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