Lagler HUMMEL User guide

BELT SANDING MACHINE HUMMEL®
HUMMEL
®
English / Englisch
S
t
a
u
b
-
d
u
s
t
-
p
o
u
s
s
i
è
r
e
-
p
o
l
v
o
S
t
a
u
b
-
d
u
s
t
-
p
o
u
s
s
i
è
r
e
-
p
o
l
v
o
-
-
<1
mg/m³
Operation,
Maintenance, Safety
Translation of original operating instructions
for the belt sanding machine
00.100.20.002 01.12.2012 *00.100.20.002*

HUMMEL®01.12.2012
English / Englisch
HUMMEL®- ASSEMBLIES
Fig. 1 Assemblies of the HUMMEL®belt sanding machine
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
2

HUMMEL®01.12.2012
English / Englisch
CONTENTS
1 Introduction.....................................................................................................................................................................4
1.1 Features of the machine ................................................................................................................................................4
1.2 Description of the machine ...........................................................................................................................................4
1.3 Intended use of the machine.........................................................................................................................................4
1.4 Safety devices.................................................................................................................................................................4
2 Hazard warnings and safety instructions ....................................................................................................................5
2.1 Hazard warnings.............................................................................................................................................................5
2.2 General safety instructions ...........................................................................................................................................8
3 Technical data...............................................................................................................................................................10
4 Commissioning..............................................................................................................................................................12
4.1 Preparing the machine for operation .........................................................................................................................12
4.2 Connecting the power cable .......................................................................................................................................15
4.3 Switching on the machine...........................................................................................................................................16
4.4 Switching off the machine...........................................................................................................................................18
5 Working with the HUMMEL®.......................................................................................................................................19
5.1 Application tips.............................................................................................................................................................19
5.2 Changing the sanding belt...........................................................................................................................................20
5.3 Regulating the sanding drum pressure ......................................................................................................................22
5.4 Emptying the dust bag..................................................................................................................................................23
6 Transport and storage..................................................................................................................................................24
6.1 Dismantling the machine before transportation .......................................................................................................25
6.2 Assembly after transportation ....................................................................................................................................27
6.3 Storage ..........................................................................................................................................................................28
7 Maintenance work and replacement of wearing parts............................................................................................29
7.1 Cleaning and care instructions...................................................................................................................................30
7.2 Lubrication ....................................................................................................................................................................33
7.3 Checking and setting the sanding belt tracking........................................................................................................33
7.4 Checking the machine setting.....................................................................................................................................36
7.5 Checking the dust pick-up...........................................................................................................................................38
7.6 Replacement of sanding drum ....................................................................................................................................38
7.7 Replacement of tensioning roller................................................................................................................................39
7.8 Replacement of rear wheel .........................................................................................................................................41
7.9 Replacement of lateral wheels ...................................................................................................................................42
7.10 Replacement and tensioning of V-belts .....................................................................................................................42
8 Regular maintenance and testing in accordance with accident prevention regulations ....................................46
9 Causes of faults ............................................................................................................................................................48
10 Circuit diagrams............................................................................................................................................................53
11 Spare parts....................................................................................................................................................................56
12 Service passport...........................................................................................................................................................71
13 EU Declaration of conformity ......................................................................................................................................72
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!
3

HUMMEL®01.12.2012
English / Englisch
INTRODUCTION
1.1 FEATURES OF THE MACHINE
Figure 1 (page 2) shows the most important assemblies 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
woodenandcork floors,plasticskating rinksandtartan 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!
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
Introduction
1
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.
Please read these operating instructions
completely before you begin working
with your HUMMEL®. 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.
4

HUMMEL®01.12.2012
English / Englisch
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!
• 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!
WARNING!
RISK OF DEATH, RISK OF INJURY, RISK OF
FIRE:
• Be certain to read the hazard warnings
and safety instructions before using the
machine!
• Instructyourco-workers andcolleagues
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!
Hazard warnings and safety instructions
2
5

HUMMEL®01.12.2012
English / Englisch
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 5.4, Emptying the dust bag)!
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:
3 wires with wire cross-sections of at least 2.5 mm²
- machines with motor for mains voltage 400 V:
5 wires with wire cross-sections of at least 1.5 mm²
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
6

HUMMEL®01.12.2012
English / Englisch
WARNING!
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!
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 when tilted backward or
forward!
• The machine may not be started if the sanding drum is on the
floor!
• 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 uninten-
tional 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!
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
7

HUMMEL®01.12.2012
English / Englisch
CAUTION!
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)! 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!
RISK OF PROPERTY DAMAGE:
• 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!
• 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.
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
8

HUMMEL®01.12.2012
English / Englisch
• 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.
• 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!
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
9

HUMMEL®01.12.2012
English / Englisch
TECHNICAL DATA
Manufacturer....................................................... Eugen Lägler GmbH
Machine type.................................................... belt sanding machine
Serial number ................................................................see type plate
Year of manufacture......................................................see type plate
Motor type.......................................................single-phase AC motor
- Voltage................................................................230 V | .......... 220 V
- Frequency ............................................... 50 Hz (CPS) | 60 Hz (CPS)
- Output.............................................................. 2.2 kW | ........2.9 kW
- Necessary fuse protection of mains supply.....16 A | ............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)
- Output.......................................................................................4.0 kW
- Necessary fuse protection of mains supply.............................16 A
Insulation class ...................................................................................B
Protection class ............................................................................IP 54
Safety devices......................................................no-voltage release,
temperature switch as overload
protection in the motor
Drum diameter.......................................................175.5 mm (~ 6 7/8“)
Drum width................................................................200 mm (~ 7 7/8”)
Drum speed................................................................ 2400 1/min (rpm)
Dimension of the sanding belt ...... 200 x 750 mm (~ 7 7/8” x 29 1/2”)
Overall length of the machine................................... 1040 mm (~ 41“)
Overall width of the machine......................................360 mm (~ 14“)
Overall height of the machine.............................1020 mm (~ 40 1/8“)
Weight of the machine housing..................................41 kg (~ 90 lbs)
Weight of the motor .....................................................34 kg (~ 75 lbs)
Weight of the guide tube.................................................4 kg (~ 9 lbs)
Overall weight of the machine..................................79 kg (~ 174 lbs)
Dust emissions at workplace.............. < 1 mg/m³ (~ 0.012 gr./cu.yd.)
(measured as per the testing requirements GS-HO-15 of
German statutory accident insurance DGUV)
Workplace-related noise emission values...........................76 dB(A)
Measurement uncertainty constant of the
noise emission values............................................................4 dB (A)
Vibration total value ahv ........................................................< 2.5 m/s²
(measured at the handle)
Technical data
3
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.
10