Butler LIBRAK240RTLD User manual

INSTRUCTION MANUAL
• For any further information please contact your local dealer or call:
For spare parts drawings refer to the section “ LIST OF COMPONENTS” enclosed to this manual.
GB TRANSLATION FROM THE
ORIGINAL INSTRUCTIONS
- Rev. n. 2 (11/2017)
LIBRAK240RTLD
LIBRAK240RTLCD
BUTLER ENGINEERING and MARKETING S.p.A. a s. u.
Via dell’Ecologia, 6 - 42047 Rolo - (RE) Italy
Phone [phone] - Fax [phone] - e-mail: [e-mail]
1294-M015-2_B
1294-M015-2_B

GB
Page 2 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
SUMMARY
SYMBOLS USED IN THE MANUAL AND
ON THE MACHINE________________________ 5
1.0 GENERAL INTRODUCTION __________ 7
1.1 Introduction ____________________________ 7
2.0 INTENDED USE _____________________ 7
2.1 Training of personnel __________________ 7
3.0 SAFETY DEVICES ___________________ 8
3.1 Residual risks __________________________ 8
4.0 GENERAL SAFETY RULES __________ 8
5.0 PACKING AND MOBILIZATION FOR
TRANSPORT ________________________ 9
6.0 UNPACKING ________________________ 10
7.0 MOBILIZATION_____________________ 10
8.0 WORKING ENVIRONMENT CONDI-
TIONS______________________________ 11
8.1 Working area __________________________11
8.2 Lighting _______________________________11
9.0 MACHINE ASSEMBLY ______________ 12
9.1 Anchoring system _____________________12
9.2 Accessories contained in the packing _12
9.3 Assembly procedure___________________13
9.3.1 Fitting the shaft on the flange _____13
9.3.2 Mounting of foot guard protection _13
10.0 ELECTRICAL CONNECTION ________ 14
10.1 Electrical checks ______________________14
11.0 AIR CONNECTION __________________ 15
12.0 MULTIFUNCTION LED PANEL ______ 15
12.1 DISPLAY and LEDs brightness adjust-
ment___________________________________16
13.0 FITTING THE WHEEL ON THE MAN-
DREL ______________________________ 16
13.1 Loading the wheel on the mandrel
with lifting device _____________________16
13.2 Wheel assembly________________________17
14.0 SWITCHING THE MACHINE ON AND
OFF ________________________________ 18
15.0 WHEEL BALANCING _______________ 19
15.1 Determination of wheel dimensions ___19
15.1.1 Manual setting of wheel
dimensions ________________________19
15.1.2 Entry of measures _________________21
15.2 User management _____________________24
15.3 Unbalance measurement ______________24
15.3.1 Indicative display of points where
to fit weight________________________24
15.3.2 Balancing mode____________________25
15.3.3 Dynamic balancing ________________26
15.3.4 ALU-S procedure ___________________26
15.3.5 Static balancing (STAT) ___________27
15.3.6 Positioning the correction
weights on the wheel_______________27
15.4 Measuring the unbalance with auxil-
iary programs_________________________28
15.4.1 ALU1 procedure ____________________30
15.4.2 PAX mode __________________________31
15.5 Recalculation Function ________________31
15.6 ECO-WEIGHT procedure _______________31
16.0 WHEEL BALANCING IN MOTOR-
BIKE MODE ________________________ 33
17.0 SPLIT PROCEDURE ________________ 33
18.0 WEIGHTS HIDDEN BEHIND
SPOKES MODE_____________________ 35
19.0 MATCHING PROCEDURE (Rim - Tyre
Optimization) ______________________ 36
20.0 CALIBRATION______________________ 38
20.1 “Zero mandrel” setting________________39
20.2 Weight measurement sensors calibra-
tion (CAR mode) _______________________39
20.3 Weight measurement sensors calibra-
tion (TRUCK mode) ____________________41
21.0 USER’S SETTING AND CUSTOMIZA-
TIONS______________________________ 42
21.1 Setting measurements units for rim
weight and width/diameter ____________43
21.2 Users’ management - Motorbike mode
- Eco-Weight - Residual static setting__43
21.3 Setting of Repositioning - Comfort -
Carter - Pax ___________________________43
21.4 Width measurement option setting ____44
21.5 Weights display management _________44
21.6 Setting adhesive weight dimensions
and static threshold percentage_______45
22.0 ERROR SIGNALS___________________ 46
23.0 ROUTINE MAINTENANCE __________ 47
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 3 of 52
24.0 TECHNICAL DATA__________________ 48
24.1 Dimensions____________________________49
25.0 STORING___________________________ 50
26.0 SCRAPPING ________________________ 50
27.0 REGISTRATION PLATE DATA ______ 50
28.0 FUNCTIONAL DIAGRAMS __________ 50
Table A - Electrical connection
diagram _________________________51
Table B - Pneumatic connection
diagram _________________________52
29.0 LIST OF COMPONENTS
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 4 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
2
1
34
5
6
7
8
Fig. 1
KEY
1 – Weight holding bridge
2 – Control panel/led display
3 – Distance caliper
4 – Threaded shaft
5 – Lifting device
6 – Main switch
7 – Lifting device control lever
8 – Weight fitting pliers
LIBRAK240RTLD - LIBRAK240RTLCD
1294-M015-0_B

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 5 of 52
SYMBOLS USED IN THE MANUAL AND ON THE MACHINE
Symbols Description
2167000
Read instruction manual.
FORBIDDEN!
Wear work gloves.
Wear work shoes.
2167000
Wear safety earcaps.
99990758
Shock hazard.
Caution: hanging loads.
Mandatory. Operations or jobs to
be performed compulsorily.
Danger! Be particularly careful.
Symbols Description
Move with fork lift truck or pallet
truck.
Lift from above.
1541000
General danger.
Wear safety goggles.
Technical assistance necessary.
Do not perform any intervention.
Warning. Be particularly careful
(possible material damages).
Note. Indication and/or useful
information.
Attention: never lift the machine
by means of the mandrel.
99990114
Arrow plate.
999912940
LIBRAK240RTLD - LIBRAK240RTLCD
1294-M015-0_B

GB
Page 6 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
999915570
B1541000
•
*
99990114
999910050
99990758
♦
999919050 999916980
999916311
999912380
999912940
INFORMATION PLATE LOCATION TABLE
Code numbers of plates
B1541000 Danger plate
99990114 Arrow plate
99990758 Electricity danger plate
999910050 Protection device use plate
999912380 Plate of voltage values and frequencies of operation
999912940 Lifting plate
999915570 Crushing danger plate
999916311 Rubbish skip label
999916980 Capacity load 200 Kg plate
999919050 Digital Series label
♦Serial number plate
*Manufacturer nameplate
●Machine nameplate
IF ONE OR MORE PLATES DISAPPEAR FROM THE MACHINE OR BECOMES DIFFICULT
TO READ, REPLACE IT AND QUOTE ITS/THEIR CODE NUMBER/S WHEN REORDERING.
LIBRAK240RTLD - LIBRAK240RTLCD
1294-M015-0_B

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 7 of 52
SOME OF THE PICTURES AND/
OR DISPLAY SCREEN PAGES
PRESENT IN THIS MANUAL HAVE
BEEN OBTAINED FROM PICTURES
OF PROTOTYPES, THEREFORE
THE STANDARD PRODUCTION MA-
CHINES AND ACCESSORIES CAN
BE DIFFERENT IN SOME COMPO-
NENTS/DISPLAY SCREEN PAGES.
1.0 GENERAL INTRODUCTION
This manual is an integral part of the product and
must be retained for the whole operating life of the
machine.
Carefully study the warnings and instructions con-
tained in this manual. It contains important instruc-
tions regarding FUNCTIONING, SAFE USE and
MAINTENANCE.
KEEP THE MANUAL IN A KNOWN,
EASILY ACCESSIBLE PLACE FOR
ALL ACCESSORY OPERATORS
TO CONSULT IT WHENEVER IN
DOUBT.
THE MANUFACTURER DISCLAIMS
ALL RESPONSIBILITY FOR ANY
DAMAGE OCCURRED WHEN THE
INDICATIONS GIVEN IN THIS
MANUAL ARE NOT RESPECTED:
AS A MATTER OF FACT, THE NON-
COMPLIANCE WITH SUCH INDI-
CATIONS MIGHT LEAD TO EVEN
SERIOUS DANGERS.
1.1 Introduction
Thank you for preferring this wheel balancer. We feel
sure you will not regret your decision.
This machine has been designed for use in profes-
sional workshops and stands out for its reliability
and easy, safe and rapid operation. With just a small
degree of maintenance and care, this wheel balancer
will give you many years of trouble-free service and
lots of satisfaction.
2.0 INTENDED USE
The machines of model LIBRAK240RTLD -
LIBRAK240RTLCD, and relative versions, are
wheels balancing machines for trucks, projected to
be used exclusively to cancel out, or at least reduce
to acceptable limits the vibrations of the wheels, by
fitting counterweights of suitable size and in specific
positions to the same wheels that are not correctly
balanced.
DANGER: EMPLOYING THESE
MACHINES OUTSIDE THE USE
DESTINATION THEY HAVE BEEN
DESIGNED FOR (AS INDICATED
IN THIS MANUAL) IS INAPPROPRI-
ATE AND DANGEROUS.
THE MANUFACTURER CANNOT
BE HELD RESPONSIBLE FOR ANY
DAMAGE CAUSED BY IMPROPER,
ERRONEOUS, OR UNACCEPTABLE
USE.
AN INTENSIVE USE OF THE EQUIP-
MENT IN INDUSTRIAL ENVIRON-
MENT IS NOT RECOMMENDED.
2.1 Staff training
The machine may be operated only by suitably
trained and authorized personnel.
Given the complexity of the operations necessary to
manage the machine and to carry out the operations
safely and efficiently, the personnel must be trained
in such a way that they learn all the information
necessary to operate the machine as intended by the
manufacturer.
A CAREFUL READING OF THIS
INSTRUCTION MANUAL FOR
USE AND MAINTENANCE AND A
SHORT PERIOD OF TRAINING
WITH SKILLED PERSONNEL CAN
BE AN ENOUGH PREVENTIVE
PREPARATION.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 8 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
3.0 SAFETY DEVICES
PERIODICALLY, AT LEAST MONTH-
LY, CHECK THE INTEGRITY AND
THE FUNCTIONALITY OF THE
SAFETY AND PROTECTION DE-
VICES ON THE MACHINE.
• Controls logic disposition
Its function is to prevent the operator from danger-
ous mistakes.
• Master switch
Its function is to disconnect machine electric supply.
3.1 Residual risks
The machine was subjected to a complete analysis of
risks according to reference standard EN ISO 12100.
Risks are as reduced as possible in relation with tech-
nology and product functionality.
Possible residual risks have been emphasized through
pictorial representations and warnings which placing is
indicated in “ PLATE POSITIONING TABLE” at page 6.
4.0 GENERAL SAFETY RULES
• Any tampering with or modification to the machine
not previously authorized by the manufacturer ex-
empts the latter from all responsibility for damage
caused by or derived from said actions.
• Removing of or tampering with the safety devices or
with the warning signals placed on the machine leads
to serious dangers and represents a transgression of
European safety rules.
• Use of the machine is only permitted in places free
from explosion or fire hazard and in dry places
under cover.
• Original spare parts and accessories should be used.
THE MANUFACTURER CANNOT
BE HELD RESPONSIBLE FOR ANY
DAMAGE CAUSED BY IMPROPER,
ERRONEOUS, OR UNACCEPTABLE
USE.
• Installation must be conducted only by qualified
personnel exactly according to the instructions that
are given below.
• Ensure that there are no dangerous situations dur-
ing the machine operating manoeuvres. Immediately
stop the machine if it miss-functions and contact the
assistance service of an authorized dealer.
• In emergency situations and before carrying out any
maintenance or repairs, disconnect all supplies to
the machine by using the main switch, placed on the
machine itself, and unplugging the power supply.
• The machine electrical supply system must be
equipped with an appropriate earthing, to which
the yellow-green machine protection wire must be
connected.
• Ensure that the work area around the machine is free
of potentially dangerous objects and that there is no
oil since this could damage the tyre. Oil on the floor
is also a potential danger for the operator.
• UNDER NO CIRCUMSTANCES must the machine be
used to spin anything but vehicle wheels. Bad locking
can cause rotating parts to come loose, with potential
damage to the machine and anything in the vicinity
and injury to the operator.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 9 of 52
OPERATORS MUST WEAR SUIT-
ABLE WORK CLOTHES, PROTEC-
TIVE GLASSES AND GLOVES,
AGAINST THE DANGER FROM
THE SPRAYING OF DANGEROUS
DUST, AND POSSIBLY LOWER
BACK SUPPORTS FOR THE LIFT-
ING OF HEAVY PARTS. DANGLING
OBJECTS LIKE BRACELETS MUST
NOT BE WORN, AND LONG HAIR
MUST BE TIED UP. FOOTWEAR
SHOULD BE ADEQUATE FOR THE
TYPE OF OPERATIONS TO BE CAR-
RIED OUT.
• The machine handles and operating grips must be
kept clean and free from oil.
• The workshop must be kept clean and dry. Make sure
that the working premises are properly lit.
The machine can be operated by a single operator.
Unauthorized personnel must remain outside the
working area, as shown in Fig. 3.
Avoid any hazardous situations. Do not use air-
operated or electrical equipment when the shop is
damp or the floor slippery and do not expose such
tools to atmospheric agents.
• When operating and servicing this machine, carefully
follow all applicable safety and accident-prevention
precautions.
The machine must not be operated by professionally
unskilled persons.
5.0 PACKING AND MOBILIZATION FOR
TRANSPORT
HAVE THE MACHINE HANDLED BY SKILLED
PERSONNEL ONLY.
THE LIFTING EQUIPMENT MUST WITHSTAND
A MINIMUM RATED LOAD EQUAL TO THE
WEIGHT OF THE PACKED MACHINE (SEE
PARAGRAPH “TECHNICAL SPECIFICATIONS”).
The machine is packed completely assembled. The
machine is inside a carton box which size is mm
800x1200x1300.
Movement must be by pallet-lift or fork-lift trolley.
The fork lifting points are indicated on the packing.
Fig. 2
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 10 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
7.0 MOBILIZATION
THE LIFTING EQUIPMENT MUST WITHSTAND
A MINIMUM RATED LOAD EQUAL TO THE
WEIGHT OF THE MACHINE (SEE PARAGRAPH
TECHNICAL SPECIFICATIONS). DO NOT AL-
LOW THE LIFTED MACHINE TO SWING.
NEVER LIFT THE MACHINE BY MEANS OF THE
MANDREL.
If the machine has to be moved from its normal work
post, the movement must be conducted following the
instructions listed below.
• Protect the exposed corners with suitable material
(Pluribol/cardboard).
• Do not use metallic cables for lifting.
• Make sure that the electricity supply is not connected.
• Place again the machine onto the original pallet with
whom it was delivered.
• Use transpallet or fork-lift for handling.
6.0 UNPACKING
DURING UNPACKING, ALWAYS
WEAR GLOVES TO PREVENT ANY
INJURY CAUSED BY CONTACT
WITH PACKAGING MATERIAL
(NAILS, ETC.).
The cardboard box is supported with plastic strapping.
Cut the strapping with suitable scissors. Use a small
knife to cut along the lateral axis of the box and open
it like a fan.
It is also possible to unnail the cardboard box from
the pallet it is fixed to. After removing the packing, and
in the case of the machine packed fully assembled,
check that the machine is complete and that there is
no visible damage.
If in doubt do not use the machine and refer to pro-
fessionally qualified personnel (to the seller).
The packing (plastic bags, expanded polystyrene, nails,
screws, timber, etc.) should not be left within reach of
children since it is potentially dangerous. These ma-
terials should be deposited in the relevant collection
points if they are pollutants or non biodegradable.
THE BOX CONTAINING THE FIX-
TURES IS CONTAINED IN THE
WRAPPING. DO NOT THROW IT
AWAY WITH THE PACKING.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 11 of 52
8.0 WORKING ENVIRONMENT CONDI-
TIONS
The machine must be operated under proper condi-
tions as follows:
• temperature: 0° + 45° C
• relative humidity 30 - 90% (dew-free)
atmospheric pressure: 860 - 1060 hPa (mbar).
The use of the machine in ambient conditions other
than those specified above is only allowed after prior
agreement with and approval of the manufacturer.
8.1 Working area
Fig. 3
200
600
600
USE THE MACHINE IN A DRY AND AD-
EQUATELY LIT PLACE, POSSIBLY INDOORS
OR ANYWAY IN A ROOFED AREA, THIS PLACE
MUST BE IN COMPLIANCE WITH APPLICABLE
SAFETY REGULATIONS.
The location of the machine requires a usable space
as indicated in Fig. 3. The positioning of the machine
must be according to the distances shown. From the
control position the operator is able to observe all the
machine and surrounding area. He must prevent unau-
thorized personnel or objects that could be dangerous
from entering the area.
The machine must be fixed on a flat floor surface,
preferably of cement or tiled. Avoid yielding or irregu-
lar surfaces.
The base floor must be able to support the loads trans-
mitted during operation.
This surface must have a capacity load of at least 500
kg/m².
The depth of the solid floor must be sufficient to guar-
antee that the anchoring bolts hold.
8.2 Lighting
The machine does not require its own lighting for
normal working operations. However, it must be used
in an adequately lit environment.
In case of poor lighting use lamps having total power
800/1200 Watt.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 12 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
9.0 MACHINE ASSEMBLY
After having freed the various components from the
packing check that they are complete, and that there
are no anomalies, then comply with the following in-
structions for the assembly of the components making
use of the attached series of illustrations.
9.1 Anchoring system
The packed machine is fixed to the support pallet
through the holes prearranged on the frame. Such
holes can be used also to fix the machine to the ground,
through floor anchor small blocks (excluded from sup-
ply). Before carrying out the definitive fixing, check that
all the anchor points are laid down flat and correctly
in contact with the fixing surface itself. If not so, insert
shimming profiles between the machine and the fixing
lower surface, as indicated in Fig. 4.
IN CASE OF WHEEL WEIGHING
MORE THAN 30 KG, IT IS COM-
PULSORY TO FIX TO THE GROUND
BY MEANS OF SCREW ANCHORS.
X
X
1X
b
c
a
Fig. 4
a = 240
b = 1200
c = 485
• Execute 4 holes with 10 mm diameter on the floor
by the holes on the bottom floor;
• insert the small blocks (excluded from supply) into
the holes;
• fix the machine to the ground with 4 M8x80 mm
screws (excluded from supply) (Fig. 4 ref. 1) (or
with 4 8x80 mm stud bolts (excluded from supply)).
Tighten the screws with an approximate tightening
torque of 70 Nm.
9.2 Fixtures contained in the packing
The packing case contains also the fixtures box.
Check that all the parts listed below are there (see
Fig. 5).
For LIBRAK240RTLD model
Code Description N.
GAR103 Trucks ring nut with hand-
wheel + pusher ring
1
GAR113 Cone + vans adapter 1
129401060 Trucks width gauge 1
129480020 Trucks calibrator 1
1300A004 Weight pliers 1
For LIBRAK240RTLCD model
Code Description N.
GAR103 Trucks ring nut with hand-
wheel + pusher ring
1
GAR122 Flange for trucks wheels
bearing
1
GAR114 2 cones D. 202-221;281 trucks 1
129401060 Trucks width gauge 1
129480020 Trucks calibrator 1
1300A004 Weight pliers 1
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 13 of 52
9.3 Assembly procedures
9.3.1 Fitting the shaft on the flange
Screw the shaft with an Allen wrench (Fig. 6 ref. 1)
on the flange (Fig. 6 ref. 2).
1
2
Fig. 6
9.3.2 Mounting of foot guard protection
Fasten the foot guard protection (Fig. 7 ref. 1) at the
base of the lift (Fig. 7 ref. 2) using the screws (Fig. 7
ref. 3) and the washers (Fig. 7 ref. 4) supplied.
1
2
34 3
4
Fig. 7
GAR103
GAR113
129401060
129480020
GAR114
GAR122
1300A004
A
Fig. 5
THE GRIP-RING (FIG. 5 REF. A)
MUST BE MOUNTED WITH THE
TEETH OR DISCHARGE SIDE
TOWARDS THE RING-NUT (SEE
FIG. 5).
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 14 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
10.0 ELECTRICAL CONNECTION
EVEN THE TINIEST PROCEDURE
OF AN ELECTRICAL NATURE
MUST BE CARRIED OUT BY PRO-
FESSIONALLY QUALIFIED STAFF.
BEFORE CONNECTING THE MA-
CHINE MAKE SURE THAT:
• THE MAIN POWER RATING COR-
RESPONDS TO THE MACHINE
RATING AS SHOWN ON THE
MACHINE PLATE;
• ALL MAIN POWER COMPO-
NENTS ARE IN GOOD CONDI-
TION;
• THE ELECTRICAL SYSTEM
IS PROPERLY GROUNDED
(GROUND WIRE MUST BE THE
SAME CROSS-SECTION AREA
AS THE LARGEST POWER SUP-
PLY CABLES OR GREATER);
• MAKE SURE THAT THE ELEC-
TRICAL SYSTEM FEATURES A
CUTOUT WITH DIFFERENTIAL
PROTECTION SET AT 30 mA.
The machine is supplied with 3 mt. of free cable. A plug
corresponding to the following requirements must be
connected to the cable:
• Conformity to Norm IEC 309
• 230 Volt – 16A
• 2P + Ground
• IP 44
FIT A TYPE-APPROVED (AS RE-
PORTED BEFORE) PLUG TO THE
MACHINE CABLE (THE GROUND
WIRE IS YELLOW/GREEN AND
MUST NEVER BE CONNECTED TO
THE PHASE LEADS). MAKE SURE
THAT THE ELECTRICAL SYSTEM
IS COMPATIBLE WITH THE RATED
POWER ABSORPTION SPECIFIED
IN THIS MANUAL AND APT TO
ENSURE THAT VOLTAGE DROP
UNDER FULL LOAD WILL NOT
EXCEED 4% OF RATED VOLTAGE
(10% UPON START-UP).
FAILURE TO OBSERVE THE ABOVE
INSTRUCTIONS WILL IMMEDIATE-
LY INVALIDATE THE WARRANTY.
10.1 Electrical checks
BEFORE STARTING UP THE
WHEEL-BALANCER, BE SURE TO
BECOME FAMILIAR WITH THE LO-
CATION AND OPERATION OF ALL
CONTROLS AND CHECK THEIR
PROPER OPERATION (SEE PAR.
“CONTROLS”).
CARRY OUT A DAILY CHECK OF
MAINTAINED-TYPE CONTROLS
CORRECT FUNCTIONING, BEFORE
STARTING MACHINE OPERATION.
Once the plug/socket connection has been made, turn
on the machine using the master switch (Fig. 8 ref. 1).
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 15 of 52
1
Fig. 8
11.0 AIR CONNECTIONS
Connect the wheel balancer to the centralised com-
pressed-air system by means of the connection on the
back of the machine (see Fig. 9).
The air system supplying the machine must be able
to supply filtered and de-humidified air at a pressure
between 8 and 10 bar. It must feature an on-off valve
upstream of the machine.
Fig. 9
12.0 MULTIFUNCTION LED PANEL
The wheel balancers are equipped with a multi-function
display panel with signal LEDs, together with a silk-
screen representing the shape of a rim and the various
available options.
This panel also includes LEDs indicating where the
operator shall fit adhesive or clip weights and the
balancing mode and/or option used, as well as correct
wheel rotation for inner/outer weights positioning.
Fig. 10
1 2 3 45
6 7 8 9
KEY
1 – Display screen “D1” showing INNER/DIMEN-
SIONS unbalance
2 – LED showing wheel rotation inner/outer
3 – Display screen “D2” showing OUTER/DIMEN-
SIONS unbalance
4 – Indication of the selected USER (see Par. 15.2)
5 – Selected mode indication
6 – Rim shape diagram with weights position
7 – OPTION Weights hidden behind spokes (see
Chapter 18)
8 – MATCHING OPTION (see Chapter 19)
9 – SPLIT OPTION (see Chapter 17)
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 16 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
12.1 DISPLAY and LEDs brightness adjust-
ment
Press the keys indicated below to adjust DISPLAY and
LEDs brightness.
Keep key , pressed and, at the same time, press
key to increase brightness.
Brightness is gradually increased until the max. level,
then display screens and LEDS will become dark; if
you continue brightness max. level will be reached
again, and so on.
THE ADJUSTMENT IS STORED
AUTOMATICALLY AND REMAINS
ALSO AFTER MACHINE SHUT-
DOWN.
13.0 FITTING THE WHEEL ON THE MAN-
DREL
To achieve perfect balancing, the wheel must be care-
fully and properly fitted on the mandrel. Imperfect
centring will inevitably cause unbalances.
MOST IMPORTANT IS THAT ORIGI-
NAL CONES AND ACCESSORIES
ARE USED MADE SPECIFICALLY
FOR USE ON THE WHEEL BAL-
ANCER.
Wheel fitting using the cones provided is illustrated
below.
For alternative fittings, using optional accessories, refer
to the special instructions provided separately.
13.1 Loading the wheel on the mandrel with
lifting device
1. Remove any type of foreign body from the wheel
(Fig. 11 ref. 3): pre-existing weights, stones and
mud, and make sure the mandrel (Fig. 11 ref. 1)
and the rim centring area are clean before fitting
the wheel on the mandrel.
2. Guide the wheel on the lift slide (Fig. 11 ref. 2) with
the inside of the rim towards the wheel balancer.
3
1
2
Fig. 11
3. Hold the wheel, operate the control ( Fig. 12 ref. 1)
and let the lifting device raise (Fig 12 ref. 2) so
as to align the centring hole of the rim with the
mandrel.
2
1
Fig. 12
4. Now, guide the slide of the lifting device (Fig. 13
ref. 1), holding the wheel (Fig. 13 ref. 2), towards
the mandrel (Fig. 13 ref. 3) of the wheel balancer.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 17 of 52
2
1
3
Fig. 13
13.2 Wheel assembly
Only for LIBRAK240RTLD model
1. Remove any type of foreign body from the wheel
(Fig. 14 ref. 2): pre-existing weights, stones and
mud, and make sure the mandrel (Fig. 14 ref. 1)
and the rim centring area are clean before fitting
the wheel on the mandrel.
2. Fit the wheel (Fig. 14 ref. 2) with the inside of the
rim towards the wheel balancer.
3. Fit the adapter (Fig. 14 ref. 3) and the cone
(Fig. 14 ref. 4) against the wheel (Fig. 14 ref. 2).
You can mount the cone (Fig. 14 ref. 4) in the
two directions, depending on the diameter of the
centring hole. Fit the grip-ring (Fig. 14 ref. 5) in
the hand-wheel ring nut (Fig. 14 ref. 6) and fasten
them against the cone (Fig. 14 ref. 4).
As an alternative, use GAR344 (optional) and pro-
ceed as described below: mount the casing (Fig. 14
ref. 7) onto the protection cup (Fig. 14 ref. 8). Fit
the grip-ring (Fig. 14 ref. 9) into locking ring nut
(Fig. 14 ref. 10). Through the internal little levers
(Fig. 14 ref. 11), loose the ring nut (Fig. 14 ref. 10)
and approach it together with the casing (Fig. 14
ref. 7) and the cup (Fig. 14 ref. 8) to the cone
(Fig. 14 ref. 4). Then, through the external levers
(Fig. 14 ref. 12), turn the ring-nut (Fig. 14 ref. 10)
until the complete clamping of GAR344 accessory
onto the wheel (Fig. 14 ref. 2).
2
1
3 4
56
12
11
GAR344
78910
11
12
Fig. 14
Only for LIBRAK240RTLCD model
1. Remove any type of foreign body from the wheel
(Fig. 15 ref. 2): pre-existing weights, stones and
mud, and make sure the mandrel (Fig. 15 ref. 1)
and the rim centring area are clean before fitting
the wheel on the mandrel.
2. Place the support flange (Fig. 15 ref. 3) on the
mandrel (Fig. 15 ref. 1).
3. Fit the wheel (Fig. 15 ref. 2) with the inside of the
rim towards the wheel balancer.
4. Carefully choose the cone (Fig. 15 ref. 4) most suit-
able for the wheel to be balanced. Fit the cone with
the narrower part against the wheel (Fig. 15 ref. 2).
Fit the grip-ring (Fig. 15 ref. 5) in the hand-wheel
ring nut (Fig. 15 ref. 6) and screw them against
the cone (Fig. 15 ref. 4).
As an alternative, use GAR344 (optional) and pro-
ceed as described below: mount the casing (Fig. 15
ref. 7) onto the protection cup (Fig. 15 ref. 8). Fit
the grip-ring (Fig. 15 ref. 9) into locking ring nut
(Fig. 15 ref. 10). Through the internal little levers
(Fig. 15 ref. 11), loose the ring nut (Fig. 15 ref. 10)
and approach it together with the casing (Fig. 15
ref. 7) and the cup (Fig. 15 ref. 8) to the cone
(Fig. 15 ref. 4). Then, through the external levers
(Fig. 15 ref. 12), turn the ring-nut (Fig. 15 ref. 10)
until the complete clamping of GAR344 accessory
onto the wheel (Fig. 15 ref. 2).
2
1
3
4
56
12
11
GAR344
78910
11
12
Fig. 15
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 18 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
THE GRIP-RING (FIG. 15-15
REF. 5-9) MUST BE MOUNTED
WITH THE TEETH OR DISCHARGE
SIDE TOWARDS THE RING-NUT
(FIG. 14-15 REF. 6-10).
For all the models
1 - Once these operations are over, (only if using
GAR344), release the ring-nut (Fig. 14-15 ref. 10)
through the external levers (Fig. 14-15 ref. 12) and
then move it away from the cup (Fig. 14-15 ref. 8)
by means of the small levers (Fig. 14-15 ref. 11).
14.0 SWITCHING THE MACHINE ON AND
OFF
The ON/OFF master switch is located on the rear of
the machine.
To start the machine and access the program, switch
on the system by turning the master switch.
Wait a few seconds for the operating program to load
and for the first program page to appear on the dis-
play screens D1 and D2: (flashing dashes
)
Use operative keyboard keys (see Fig. 10) to use all
machine available functions.
Key for balancing cycle start.
Key for stop / end procedure.
Key for data recalculation / confirma-
tion.
Key for wheel dimensions entry.
Keys to increase/decrease entered
values.
Key for MOTORCYCLE/CAR/TRUCK
wheel cycle.
Key for balancing program selection.
Key for Option selection.
Key for Eco-Weight procedure.
“Zoom” key for not rounded-off unbal-
ance displaying.
Key for user U1-U2 selection.
Key for threaded shaft lock/unlock.
During program running, the different keys may have
meanings different from the previously described
ones. The following pages of this manual will supply
a detailed description of these keys.
In addition, some functions are achieved by pressing
a combination of several keys, that will be described
later on in this manual.
Usually, to go back and abort the procedure, press
.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB Page 19 of 52
15.0 WHEEL BALANCING
15.1 Determination of wheel dimensions
15.1.1 Manual setting of wheel dimensions
The wheel balancers feature a graduated scale for the
manual detection of the distance for weight fitting.
The value of machine's distance from rim is always set
with “mm” measurement unit.
Rim width and diameter values, on the other hand,
can be set in “inches” or “mm”; in the examples in this
manual “inch” introduction is indicated.
The rim diameter and width have to be measured
directly on the rim itself or detected by means of the
manual caliper (on issue) only for the rim width (see
Fig. 18).
In order to insert such values or to check them again
the operator will have to carry out the following pro-
cedures:
- from wheel dimensions page, press key to
select the value to be edited or set; the digit on the
display corresponding to the value to be edited is
flashing.
- Press the / keys until the desired
value is reached.
- Press the key to confirm and to move to the
next value to be edited or set.
The graduated scale shall be positioned inside the rim,
at the distance where any adhesive weight shall be fitted
(for example ALU-S), or sometimes against rim inner
edge (for example DYN). To make user’s job easier, the
corresponding LED will flash on rim shape displaying.
Fig. 16
Both LEDs
will flash
ALU-S
program
DYN program
LED inside
the rim flashing
ALU2 program
Both LEDs
will flash
Fixed LED
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD

GB
Page 20 of 52
INSTRUCTION, USE AND
MAINTENANCE MANUAL
• To make a measurement in STATIC mode (STAT):
Press key to select STATIC balancing program.
The corresponding LED turns on. Press key to
switch to the entry of the measures required.
Letter will appear on “D1” display to indicate
rim diameter value entry. The value on display “D2”
starts flashing.
Use keys / to set the value required
on “D2” display.
Dimension entry for static mode is completed.
Fig. 17
STAT mode
Weight application
point
Diameter measurement input
• To make a measurement in DYNAMIC mode (DYN):
Press key to select DYNAMIC balancing pro-
gram. The corresponding LED turns on.
DYN mode
Weight application
points
Letter will appear on “D1” display to indicate the
entry of the rated width value indicated on the rim.
The value on display “D2” starts flashing.
This measure can be detected with a graduated
caliper: place it on wheel outer and inner side (see
Fig._18).
Fig. 18
MANUAL CALIPER.
Width manual measurement
Use keys / to set the measured value
on “D2” display.
Press key to shift to the next value.
1294-M015-0_B
LIBRAK240RTLD - LIBRAK240RTLCD