Lagler ELF User manual

ELF
DRUM SANDING MACHINE ELF
English / Englisch
www.laegler.com
Translation of original operating instructions
for the drum sanding machine
Operating Instructions
00.200.20.002 01.10.2019 *00.200.20.002*

ELF 01.10.2019
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 ........................................................................................................................................13
3 Technical data .............................................................................................................................................................15
3.1 Data on type plate .......................................................................................................................................................15
3.1.1 Machine type plate ...................................................................................................................................................15
3.1.2 Motor type plate ........................................................................................................................................................16
3.2 Machine data ...............................................................................................................................................................17
4 Commissioning ............................................................................................................................................................19
4.1 Preparing the machine for operation ........................................................................................................................19
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) ..............................................................................23
4.3.3 General .......................................................................................................................................................................24
4.4 Switching off the machine ..........................................................................................................................................24
5 Working with the ELF ..................................................................................................................................................25
5.1 Application tips ............................................................................................................................................................25
5.2 Changing the abrasive ................................................................................................................................................26
5.2.1 Sanding drum for clamping abrasive paper ...........................................................................................................26
5.2.2 Centrifugal sanding drum .........................................................................................................................................29
5.3 Regulating the sanding pressure ...............................................................................................................................30
5.4 Sanding with the machine ..........................................................................................................................................31
5.5 Emptying the dust bag .................................................................................................................................................32
6 Transport and storage .................................................................................................................................................34
6.1 Dismantling the machine before transportation ......................................................................................................35
6.2 Assembly after transportation ...................................................................................................................................37
6.3 Storage .........................................................................................................................................................................39
2

ELF 01.10.2019
English / Englisch
CONTENTS
7 Maintenance work and replacement of wearing parts .........................................................................................40
7.1 Cleaning and care instructions ..................................................................................................................................41
7.2 Lubrication ...................................................................................................................................................................42
7.3 Checking the machine setting ....................................................................................................................................43
7.4 Checking the dust pick-up ..........................................................................................................................................44
7.5 Replacement of sanding drum ...................................................................................................................................45
7.6 Replacement of rear wheel ........................................................................................................................................46
7.6.1 Replacement of rear wheel only ..............................................................................................................................46
7.6.2 Replacement of complete rear wheel assembly ....................................................................................................47
7.7 Replacement of lateral wheels ..................................................................................................................................47
7.8 Replacement and tensioning of V-belts ....................................................................................................................48
7.8.1 Replacement of V-belts ............................................................................................................................................48
7.8.2 Tensioning of V-belts ................................................................................................................................................50
8 Regular inspection and maintenance work in accordance with accident prevention regulations ................52
9 Causes of faults ...........................................................................................................................................................54
9.1 The machine does not run or has switched off automatically ................................................................................54
9.2 The machine attempts to start up but is not able to do so ......................................................................................55
9.3 The machine runs but has no or very little sanding power capacity .....................................................................55
9.4 The machine vibrates intensely and runs noisily .....................................................................................................56
9.5 The machine runs but creates a great deal of dust .................................................................................................57
9.6 Sanding problems (waves, strips, grooves) ..............................................................................................................57
10 Circuit diagrams ..........................................................................................................................................................59
11 Spare parts ELF ............................................................................................................................................................62
12 Service passport .........................................................................................................................................................75
13 EC Declaration of conformity for machines (EC Directive 2006/42/EC) ................................................................76
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:
3

ELF 01.10.2019
English / Englisch
PARTS AND ASSEMBLIES
Fig. 1 Main features of the drum sanding machine ELF.
MultiClip for dust bag fixture
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
Dust bag
Machine housing
Wall-protecting roller
Bracket
Drum cover
4

ELF 01.10.2019
English / Englisch
INTRODUCTION
1.1 FEATURES OF THE MACHINE
Figure 1 shows the most important components which make up the
ELF. We recommend that you take some time to become familiar
with the machine.
1.2 DESCRIPTION OF THE MACHINE
The ELF drum sanding machine is available in two different working
widths (200 mm and 300 mm). The ELF works with a conventional
sanding drum with paper tensioning.
The ELF 200 and the ELF 300 can alternatively be equipped with a
centrifugal sanding drum.
The work zone is covered by the machine housing and foldable
drum 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 ELF drum sanding machine is suitable for dry sanding wooden
and cork floors in dry environment.
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 ELF. All LÄGLER®
products are subjected to a thorough
inspection before leaving the factory.
Read these operating instructions
completely before working with the
ELF 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”
(www.laegler.com) or contact our service
department, your retailer or your importer.
1
5

ELF 01.10.2019
English / Englisch
1.4 SAFETY DEVICES
The following parts of the machine are safety devices and must
accordingly be kept in perfect working order:
Drum cover = Dust shield, protection against abrasives
and rotating parts
Side cover = Dust shield, protection against abrasives
and rotating parts
Machine housing = Protection against abrasives and rotating
parts
Belt guard = Protection against V-belts and rotating
parts
Switch box = Protection against live parts
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
For the ELF with sanding drum, the basic equipment still includes
additionally one paper template and two hexagonal socket
wrenches with wrench size 10 mm.
INTRODUCTION
1
6

ELF 01.10.2019
English / Englisch
NOTE:
You will find the corresponding part
numbers for the optional equipment and
wearing parts in Section 11, Spare parts
ELF.
1.5.2 OPTIONAL EQUIPMENT
• 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
• O-ring used as a strain relief device
• Dust bag
• MultiClip for dust bag fixture
• Side cover
• Drum cover
• V-belts
• V-belt pulleys
• Belt tensioner
• Sanding drum
(in case of daily use, exchange every 1 - 2 years)
• Guide roller at the machine housing
• Rear wheel
• Lateral wheels
INTRODUCTION
1
7

ELF 01.10.2019
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!
• 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!
• If the electrical installation is improper, there will be a risk
of death if the machine is connected directly to the mains
socket with the extension cable!
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 ELF)!
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!
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
2
8

ELF 01.10.2019
English / Englisch
RISK OF DEATH from electrical shock:
• 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!
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!
HAZARD WARNINGS AND SAFETY INSTRUCTIONS
2
WARNING!
9