Janser Leopard User manual

USE AND MAINTENANCE MANUAL FOR THE LEOPARD MACHINE
This manual contains important information for safe use and operation of this machine.
Failure to read this manual before starting up, adjusting or carrying out maintenance operations on
this machine may cause damage to persons and/or things. The operator must be trained to use the
machine before starting it up. Keep this manual for future reference. For new manuals, apply to:
Janser GmbH - Maschinen- und
Gerätebau
Böblinger Straße 91 - D-71139 Ehningen
Tel. 07034 / 127-0 - Telefax 07034 / 8838
htt
p
:// www.
j
anser.com Email: info
@j
anser.com

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 2 INSTRUCTION MANUAL

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 3
INDEX
Instructions for operator safety .................................................................................................................. 4
Machine safety characteristics .................................................................................................................. 6
Introduction and machine characteristics................................................................................................... 7
Instructions for electrical connection ......................................................................................................... 7
Figures ....................................................................................................................................................... 8-9
Carrying the machine
one person .........................................................................................................
two people ..........................................................................................................
10
10
Setting the machine up ............................................................................................................................. 11
Machine operation...................................................................................................................................... 12
Adjustment procedure
centring the .........................................................................................................
sanding pressure.................................................................................................
wheels. ................................................................................................................
13
13
13
Routine maintenance
sanding chamber.................................................................................................
rollers ..................................................................................................................
wheels .................................................................................................................
dust bag ..............................................................................................................
belts.....................................................................................................................
bearings ..............................................................................................................
14
14
14
14
14
14
Spare parts................................................................................................................................................. 14
Problems/Causes/Remedies ..................................................................................................................... 15
Compliance declaration.............................................................................................................................. 16

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 4 INSTRUCTION MANUAL
INSTRUCTIONS FOR OPERATOR SAFETY
DANGER: means The operator or other person may be seriously injured or die if the
DANGER warnings found on this machine or in this manual are ignored or
not kept to. Read and comply with all the DANGER warnings found on this
machine or in this manual.
WARNING: means The operator or other persons may be injured if the WARNINGs found on
this machine or in this manual are ignored or not kept to. Read and comply
with all the WARNINGs found on this machine or in this manual.
CAUTION: means The operator or other persons may be hurt if the CAUTION warnings found
on this machine or in this manual are ignored or not kept to. Read and
comply with all the CAUTION warnings found on this machine or in this
manual
DANGER: Failure to read the LEOPARD machine manual before starting up, adjusting or carrying out
maintenance operations on the machine itself may cause injury to persons and/or damage
to things. The operator must be trained to use the machine before starting it up.
DANGER Sanding wooden floors may lead to an explosive environment. The following safety
procedures must be applied:
- Cigarettes, cigars, pipes, lighters, pilot lights and all other sources of fire may cause
explosion if they are used while sanding. Sources of fire must be completely removed from
the work area.
- Poorly ventilated work areas may lead to an explosive environment when certain
combustible materials are present in the air, such as, for example, solvents, thinners,
alcohols, fuels, some paints, sawdust and other combustible materials. Machines for
sanding floors can cause combustible materials and vapours to ignite.
- Working with the dust created by sanding may lead to spontaneous combustion or
explosions. Dust from sanding may catch fire and cause injury or damage. Dust from
sanding must be dealt with suitably. Always empty the sanding dust into metal containers
located outside the building.
- Empty the dust bag when it is one-third full. Empty the dust bag each time after finishing
with the machine. Never leave the dust bag unattended when it contains sanding dust.
- Do not empty the contents of the bag over a fire.
- Knocking against nails while sanding may cause explosion or start a fire. Always sink all
nails completely before sanding the surfaces.

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 5
DANGER: Use of the machine before it is completely assembled may cause injuries to people
and/or damage to things. Do not use a machine which is not completely assembled.
Keep all fastenings closed. Adjust the machine according to the specifications.
DANGER: If the power supply circuit trips continuously or it provides insufficient power, there is a
risk of electrocution. Have an authorized electrician check the fuses, protection circuit
and power supply line.
DANGER: Maintenance or repairs carried out on a machine which is not duly disconnected from
the power supply line may cause electrocution. Disconnect the power line before
carrying out any maintenance work and/or repairs.
DANGER: Use of this machine connected to a grid without earth may cause electrocution. Never
disconnect or disable the power supply earth conductor. Consult an electrician if the
earth conductor is missing or if you suspect that the system is not suitably earthed.
DANGER: Use of this machine with a damaged power supply cable may cause electric shock. Do
not use the machine if the power supply cable is damaged. Do not use the power
supply cable for moving the machine.
DANGER: Injury or electrocution may occur if the machine passes over the power supply cable or
damages it. Keep the cable away from the lower part of the machine in order to avoid
contact with the abrasive. Keep the power supply cable up over the machine.
DANGER: The moving parts of this machine may cause serious injury and/or damage. Keep
hands, feet and loose clothing away from the moving parts of the sander.
DANGER: Injury or damage may be caused by using the sander without its guards and covers in
place. Always make sure that all guards and covers are in their places and well
attached.
DANGER: Carrying out maintenance operations, replacing or adjusting belts, or replacing the dust
bag may cause injury to the operator and/or surrounding people if the machine is
connected to the power supply.
WARNING: Serious injury or damage may occur if all the instructions on this machine or in this
manual are not read and complied with. Read and abide by all safety instructions. Make
sure that all the plates, transfer printings, warnings, cautions and instructions are fixed
to the machine. New plates may be had from your authorized JANSER retailer.
WARNING: Clouds of sanding dust may form and be breathed in while the sanding machine is
being used. Always wear a dust mask when using the machine for sanding.
WARNING: The eyes and/or body may be injured if protective clothing or devices are not worn.
Always wear safety glasses, protective clothing and a dust mask during any sanding
operation.
WARNING: During sanding operations, loud noises may occur which may damage hearing after
long exposure. Always use acoustic protection during any sanding operation.

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 6 INSTRUCTION MANUAL
CAUTION: Injury or damage may occur if maintenance and repairs are carried out by
unauthorized staff.
CAUTION: Injury or damage may occur if the machine is used to move other objects or if it is
moved on a slope. The machine must be used exclusively for sanding dry wooden
floors which are flat or have a maximum slope of 2%. Do not use the machine to sand
steps or pieces of furniture. Do not ride the moving machine.
CAUTION: Damage may be caused to the machine if it is not kept in a dry building when not in
use. Store the machine in a dry building.
CAUTION: Since the machine is heavy, disconnect the motor before moving it
CAUTION: Serious damage may be caused to the surface being worked if the machine is left
running on the spot while the roller is in contact with the surface. In order to avoid
damaging the surface, always approach the cutting line delicately. Do not stop while the
roller lowers or rises, but always move at a constant speed.
MACHINE SAFETY INSTRUCTIONS
The following information highlights potentially dangerous conditions for the operator and/or machine.
Read this manual carefully in order to become familiar with the machine. Learn to know when these
conditions may occur. Set all the safety devices on the machine. Take all necessary measures in
order to train the staff who will use the machine. Immediately report damage to the machine or
incorrect operation.
1. Keep hands and clothing away from rotating parts.
2. Keep hands on the handles when the machine is running.
3. Do not let go of the machine when the motor is running.
4. Do not run the machine with the belt and abrasive belt guards open.
5. Always run the machine with the dust bag in place.
6. Do not remove the dust bag while the motor is running.
7. Always disconnect the power supply cable before starting maintenance operations.
8. The machine must always be carried with care, since each single part in which the machine can be
dismantled is extremely heavy
9. Always use the machine in a well-ventilated area.
10. Always handle dust from sanding correctly (see page 3).

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 7
INTRODUCTION AND MACHINE CHARACTERISTICS
Abrasive belt dimensions 750x203 mm
Roller width / diameter 200 mm / Ø 150 mm
Roller Speed AT 50 Hz / AT 60 Hz 2400 rpm / 2500 rpm
Motor ( A12 ) EUROPEAN / ( A11 ) USA 230V~50 Hz 2.2 kW / 220V~60 Hz 2.2 kW
Control lever operated from the handgrips
Level control by means of cam on one wheel
Safety motor protection heat cutout in the case of power failure, the motor does not
restart without manual reset
Wheels Ø 80 mm replaceable
Bearings lifelong lubricated radial bearings
Wheel pressure adjustment continuously adjustable
Machine dimensions 960x310x980 mm
Net weight 60.5 kg
Package dimensions 2 packings 680x370x640 mm & 960x430x220 mm
Gross weight 60 + 8.5 kg
Standard equipment Dust Bag, Electric Plug, Use Keys, Instruction Manual
INSTRUCTIONS FOR ELECTRICAL CONNECTION
CAUTION: This machine only works with the voltage and frequency shown on the machine plate.
Before connecting the cable to the power supply grid, make sure that the voltage and
frequency available are correct.
DANGER: Exposing the machine to water or rain leads to a risk of electrocution. Keep the machine in
a dry building.
DANGER: Incorrect mains connection of the machine leads to a risk of electrocution. In order to
prevent possible electric shocks, always use a three-wire electric system connected to an
electrical earth. For maximum protection against electric shocks, use a circuit protected
with a differential earth fault interrupter.
DANGER: Tampering with the earth pin in any way may lead to electrocution. Do not cut, remove or
break the earth pin. Do not try to insert a three-pin plug into a socket or connector which
does not have three holes. If the plug does not fit the socket, consult an authorized
electrician.
DANGER: Using the machine with a damaged plug or power supply cable may lead to electrocution. If
the cables or plugs are worn or damaged in any way, have them replaced by an electrician
or authorized service staff.
CABLES, EXTENSIONS AND PLUGS
Only use approved three-wire cables, two of which are current-carrying and one earth.
The maximum recommended length of the cable is 10 m; for lengths of greater than 10 m use cables with larger
cross- section.
DANGER If the machine is used with cables of insufficient cross-section and/or excessive length,
damage to persons and/or things may occur.
For Europe, the power supply cable must be of the HAR approved type, namely HO5VV-3x2.5 mm2, and the
plug must be of the 2P+T16A-250V approved type.
For non-European versions, consult an authorized JANSER distributor.

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 8 INSTRUCTION MANUAL
Figures

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 9
Figures

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 10 INSTRUCTION MANUAL
CARRYING THE MACHINE
WARNING: Since the machine is heavy, disconnect the motor before moving it. Ask for help
in lifting the machine and the motor.
MOVEMENT WITH ONE PERSON
In order to make movement easier, the machine can be dismantled into three parts:
motor
suction tube
base with roller
Proceed as follows:
1. Make sure that the power supply cable is disconnected from the mains and the machine.
2. Open the belt guard after unscrewing the attachment screw.
3. Loosen the belt stretcher using lever 2 (fig. A) and remove the belts.
4. Loosen knob 3 (fig. A) until the socket washers on the motor support shaft come out of their
sites on the supports.
5. Remove the motor and take it to the work site.
6. After lowering lever 4 (fig. A), unscrew and extract knurled knob 5 (fig. A).
7. Loosen nut 6 (fig. A), slip the tube off and take it to the work site.
8. Lift the base by taking hold of it at the front and back. Rest the belt guard against the chest
and carry it to the work site.
In order to reassemble the machine after moving it, proceed as follows:
1. Open the belt guard.
2. Fit the motor in place and fix it by tightening knob 3 (fig. A).
3. Fit the belts, stretch them and close the belt guard by tightening the respective screw.
CAUTION: Excessive belt tension may cause the ball bearings to wear prematurely.
The roller belt must deflect by 8mm when a load of 30 N is placed in the middle.
The aspirator belt must deflect by 8mm when a load of 18 N is placed in the
middle.
4. Fit the suction tube and roller control rod.
5. Lift the roller using lever 4 (fig. A).
6. Connect the power cable to the machine and mains.
MOVEMENT WITH TWO PEOPLE
In order to move the machine with two people, proceed as follows:
1. One operator takes hold of the handle hand-grip.
2. The second person lifts the machine using handle 1 (fig. A).

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 11
SETTING THE MACHINE UP
In order to start up the machine, proceed as follows:
1. Familiarize yourself with the machine and read all the danger, warning and caution instructions. Make
sure that all operators have read this manual.
2. Place the dust bag on the elbow and tie the cord above the flange on the elbow.
3. Find the power socket. The socket must be compatible with the plug. To avoid danger, the socket must
be earthed and protected with a fuse (20 amp).
4. Wind the cable around the pig's tail support. Keep the cable out of the machine's way.
5. Open side guard 9 (fig. B).
6. Lower the tensioning roller by turning lever 10 (fig. B) clockwise.
7. Insert the abrasive belt and allow it to protrude from the side by about 2 centimetres.
WARNING: Only use 750x203 mm abrasive belts.
8. Stretch the belt by turning lever 10 (fig. B) anticlockwise.
9. Put the plug into the socket.
10. Make sure that lever 4 (fig. A) is hooked up and the roller is off the floor.
11. Turn switch lever 8 (fig. A) momentarily from position 0 to the START position, and bring it back to 0
12. Observe the behaviour of the abrasive belt. Follow the "PROCEDURES FOR CENTRING THE
ABRASIVE BELT".
13. Close side guard 9 (fig. B).

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 12 INSTRUCTION MANUAL
MACHINE OPERATION
DANGER: Sanding wooden floors may lead to an explosive environment. Cigarettes, cigars,
pipes, lighters, pilot lights and all other sources of fire may cause an explosion if
they are used while sanding. Sources of fire must be completely removed from
the work area.
DANGER: Poorly ventilated work areas may lead to an explosive environment when certain
combustible materials are present in the air, such as, for example, solvents,
thinners, alcohols, fuels, some paints, sawdust and other combustible materials.
Machines for sanding floors can cause combustible materials and vapours to
ignite. Read the manufacturers' instructions on each chemical product used in
order to decide whether it is combustible. Keep the work area well ventilated.
DANGER: Dust created by sanding may spontaneously ignite and cause injury or damage.
Dust from sanding must be dealt with suitably. Always empty the sanding dust into
metal containers located outside the building.
DANGER: Dust created by sanding may spontaneously ignite and cause injury or damage.
Empty the dust bag when it is one-third full. Empty the dust bag each time after
finishing with the machine. Never leave the dust bag unattended when it contains
sanding dust.
DANGER: Knocking against nails while sanding may cause explosion or start a fire. Always
sink all nails completely before sanding the surfaces.
1. Make sure that lever 4 (fig. A) is hooked up and the roller is off the floor.
2. Turn switch lever 8 (fig. A) from position 0 to the START position, hold it their until the motor has
reached sufficient rotary speed, then release the switch lever, which automatically returns to work
position 1.
WARNING: During the winter, with very low temperatures, if the first startup is difficult, remove
the abrasive belt, start up the motor and allow it to idle for a few minutes. Then
replace the belt and repeat the startup operations described above.
WARNING: This machine is fitted with a safety switch. If there is a power failure during the
work, the contactor automatically trips and prevents the machine from starting up
accidentally when power is restored. In order to start work again, the startup
procedure described above must be repeated.

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 13
ADJUSTMENT PROCEDURES
PROCEDURE FOR CENTRING THE BELT
When the motor is started up, the belt centres itself automatically.
WARNING: The belt is in the correct position when it protrudes from the sanding roller by
about 1.5 mm.
When the belt is first fitted, it may be in the wrong position. In this case, turn screw 12 (fig. C) as follows:
1. By turning the screw in a clockwise direction, the belt moves outwards.
2. By turning the screw in an anticlockwise direction, the belt moves inwards
ADJUSTMENT OF THE SANDING PRESSURE
In order to change the pressure of the roller on the floor, adjust handwheel 13 (fig. D) as follows:
1. By turning the handwheel in a clockwise direction, the roller pressure on the floor decreases.
2. By turning the handwheel in an anticlockwise direction, the roller pressure on the floor increases.
WALL EDGE WHEEL
In order to avoid damaging the skirting or wall while sanding along the wall, a small support with idle wheel (fig.
B) has been fitted.
WARNING: The wall edge wheel is correctly positioned when the machine is about 8 mm from
the wall with the wheel in contact with it.
Before starting work, position the wheel correctly by unscrewing screw 11 (fig. B), moving the support to the
required position and tightening the screw.
WHEEL ADJUSTMENT
(on a plane parallel to the roller axis)
In order to adjust the position of the wheels, proceed as follows:
1. Turn the machine upside down.
2. With the tool provided (14 fig. E), check whether the wheels protrude from the basement by an equal
amount. If this is not so:
3. Loosen nut 15 (fig. E).
4. Turn the off-centre pin (fig. E) until the wheel protrudes by the same amount as the other wheel.
5. Tighten nut 15 (fig. E).

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 14 INSTRUCTION MANUAL
ROUTINE MAINTENANCE
In order to keep the machine in good working condition, it is necessary to maintain the following items
periodically.
SANDING CHAMBER
Periodically vacuum-clean the sanding chamber of dust in order to prevent interference with correct tensioner
operation.
ROLLERS
Periodically check the external surface of the tensioning and sanding rollers. Remove any dirt.
WHEELS
Periodically remove dirt from the machine body and wheels. Dirt can cause ripples on the sanded surface.
DUST BAG
Remove the bag and shake it vigorously to empty out the sanding dust. Turn the bag inside out and wash it in a
washing machine in cold water in order to prevent the pores from blocking and its ability to collect dust from
decreasing.
BELT TENSION
Periodically check the belt tension. For adjustment procedures, see pg. 10.
BALL BEARINGS
Check the ball bearings periodically for wear or damage according to the following schedule:
Wheels after the first 2500 hours.
Belt stretching pulley after the first 2500 hours.
Impeller shaft after the first 2500 hours.
Tensioning rollers after the first 2500 hours.
Sanding roller after the first 5000 hours.
Motor shaft after the first 5000 hours.
SPARE PARTS
Always use original JANSER spare parts. The guarantee and consequent responsibility are forfeited if non-
original JANSER spare parts are used, and if repairs and adjustments are carried out by unauthorized
personnel.

BELT-SANDER FOR WOODEN FLOORS
Leopard
INSTRUCTION MANUAL Page 15
PROBLEMS CAUSES REMEDIES
Insufficient cut worn or unsuitable abrasive
insuffiecient roller pressure
roller belt tension insufficient
worn roller belt
replace abrasive
increase roller pressure, see pg. 13
increase belt tension, see pg. 10
replace belt
Insufficient motor
speed
insufficient voltage due to:
excessive length or unsuitable cable cross-
section
precarious connections
faulty running capacitor
faulty motor
use cable of suitable length and cross-
section
set up suitable connections
contact an authorized JANSER distributor
contact an authorized JANSER distributor
Grooved work surface faulty belt
dirty or faulty roller surfaces
incorrect wheel adjustment
replace the belt
clean the outer surface of the tensioner
clean, straighten or replace the rubber-
coated roller
correct their position, see pg. 11
Insufficient dust
collection
dust bag over one-third full
dust bag dirty or with closed pores
intake and or outlet ducts blocked
empty out the contents of the bag
shake out the bag and wash it
clean the air ducts
The motor does not
start
faulty safety switch or contactor
faulty startup capacitor
insufficient voltage due to precarious
connections
faulty motor
no mains supply voltage
contact an authorized JANSER distributor
contact an authorized JANSER distributor
contact an authorized JANSER distributor
contact an authorized JANSER distributor
check the power supply and connections
Burns on the work
surface
worn abrasive
excessive roller pressure
excessively fine abrasive
replace abrasive
decrease sanding pressure, see pg. 13
use a coarser abrasive

BELT-SANDER FOR WOODEN FLOORS
Leopard
Page 16 INSTRUCTION MANUAL
EC COMPLIANCE DECLARATION
73/23CEE, 89/392/CEE, 91/368/CEE / 89/336/CEE, 92/31/CEE, 93/44/CEE / 93/68/CEE
We
Janser GmbH
Böblinger Straße 91
71139 Ehningen
GERMANY
declare under our responsibility that the product
Belt Sander Leopard
to which this declaration relates complies with the following standards or other normative document(s):
àSafety of machinery - Basic concepts, general principles for design
Basic terminology, methodology EN 292 Part 1 –September 1991
àSafety of machinery - Basic concepts, general principles for design
Technical principles and specification EN 292 Part 2 September 1991
àSafety of machinery - Electrical equipment of machines
Part 1 : General requirements EN 60204-1 - October 1992
àSafety of household and electrical appliances - General requirements
EN 60335-1 - June 1988 + Modification 2, 5, 6, A51, A52, A53, A54, A55
àLimits and methods of measurements of radio disturbance characteristics of electrical motor-
operated and thermal appliances for households and similar purposes, electric tools and similar
electric apparatus - EN 55014 - Edit. 1987 + modification A2 (1990)
àGeneral emission standard - Residential, commercial and light industry EN 50082-1 Edit. 1992
following the provisions of the Directives:
73/23CEE, 89/392/CEE, 89/336/CEE, 91/368/CEE 92/31/CEE, 93/44/CEE 93/68/CEE
Management
W.Müller
Technical Responsible
H.Serediuk