Instructions for use
I
CONTENTS
1- GENERAL 3
1.1 - GENERAL SAFETY RECOMMENDATIONS 3
1.1.1 - STANDARD SAFETY DEVICES 3
1.2 - FIELD OF APPLICATION 3
1.3 - OVERALL DIMENSIONS 3
1.4 - SPECIFICATION 4
2 - HANDLING AND LIFTING 4
3 - COMMISSIONING 4
3.1 - ANCHORING 4
3.2 - ELECTRICAL CONNECTION 4
3.3 - ADAPTER MOUNTING 5
3.4 - WHEEL GUARD ASSEMBLY AND ADJUSTMENT (OPTIONAL) 5
3.5 - SPACER WD 5
4 - CONTROLS AND COMPONENTS 5
4.1 - MANUAL RIM DISTANCE GAUGE 5
4.2 - CONTROL PANEL AND DISPLAY 6
4.2.1 - OPERATION FUNCTIONS MENU 7
5 - INDICATION AND USE OF THE WHEEL BALANCER 8
5.1 - DOUBLE OPERATOR PROGRAM 8
5.2 - SETTING THE WHEEL DIMENSIONS 8
5.2.1 - PRESETTING WITH GAUGE EXTENSION 11
5.3 - RECALCULATION OF THE UNBALANCE VALUES 11
5.4 - MEASUREMENT RESULT 11
5.4.1 - SPLIT FUNCTION (UNBALANCE SPREAD) 12
5.4.2 - OUT OF BALANCE OPTIMIZATION 13
5.4.3 - ALU AND STATIC MODES 14
5.4.4 - AUTOMATIC MINIMISATION OF STATIC UNBALANCE 14
6 - SET UP 15
6.1 - SELF-DIAGNOSTICS 15
6.2 - SELF-CALIBRATION 16
7 - ERRORS 17
7.1 - INCONSISTENT UNBALANCE READINGS 18
8 - ROUTINE MAINTENANCE 18
8.1 - REPLACING THE PROTECTION FUSES 18
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990
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1- GENERAL
1.1 - General safety recommendations
▪ The wheel balancing machine should only be used by duly authorized and trained personnel.
▪ The wheel balancing machine should not be used for purposes other than those described in the instruction
manual.
▪ Under no way should the wheel balancing machine be modifi ed except for those modifi cations made explici-
tly by the manufacturer.
▪ Never remove the safety devices. Any work on the machine should only be carried out by specialist person-
nel.
▪ Avoid using strong jets of compressed air for cleaning.
▪ Use alcohol to clean plastic panels or shelves (AVOID LIQUIDS CONTAINING SOLVENTS).
▪ Before starting the wheel balancing cycle, make sure that the wheel is securely locked on the adapter.
▪ The machine operator should avoid wearing clothes with fl apping edges. Make sure that unauthorized per-
sonnel do not approach the machine during the work cycle.
▪ Avoid placing objects inside the base as they could impair the correct operation of the machine.
▪ Correct head disassembly (also see exploded drawings): the weight-holder head is anchored to the bed on
the front side with snap-fi tting clips; on the rear side, it is secured by a safety screw accessed by removing
the control panel.
1.1.1 - Standard safety devices
▪ Stop push button for stopping the wheel under emergency conditions.
▪ The wheel guard is not compulsory since the balancing speed is less than 100 min
1.2 - Field of application
The machine is designed for balancing wheels of car, light commercial vehicles or motorcycle, weighing less than 75
Kg. It can be operated in the temperature range of 0° to + 45° C.
The following functions are provided: Double operator; ALUS; SPLIT; Unbalance optimization; Self diagnostics;
Self-calibration.
1.3 - Overall dimensions
1
-1.
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1.4 - Specifi cation
Weight (excluding adapter) ~ 80Kg.
Single-phase power supply 115 / 230 V 50/60 Hz
Protection class IP 54
Max power consumption
Balancing speed < 100 min
Cycle time for average wheel (14 kg) 6-8 seconds
Max.resolution of measurement 1 gram
Position resolution ± 1.4 °
Average noise < 70dB (A)
Rim-machine distance 0 - 265 mm
Rim width setting range 1.5” ÷ 20” or 40 ÷ 510 mm
Diameter setting range 10” ÷ 30” or 265 ÷ 765 mm
0,8 Kw
-1
2 - HANDLING AND LIFTING
2 2a
NOTE: DO NOT HOIST THE MACHINE USING DIFFERENT GRIPS
(See “Correct head disassembly” - paragraph: GENERAL SAFETY REGULATIONS)
3 - COMMISSIONING
3.1 - Anchoring
The machine can operate on any fl at non resilient fl oor.
Make sure that the machine rests solely on the three support points provided (fi g. 2a).
3.2 - Electrical connection
The machine is supplied with a single phase mains cable plus earth (ground).
The supply voltage (and mains frequency) is given on the machine nameplate. It cannot be changed.
Connection to the mains should always be made by expert personnel.
The machine should not be started up without proper earthing.
Connection to the mains should be through a slow acting safety switch rated at 3 A (230V) or 8 A (115V). See enclosed layout.
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3.3 - Adapter mounting
3
A
B
The wheel balancing machine is supplied complete
with cone adapter for fastening wheels with central
bore. Other optional adapters can be mounted:
a) Remove threaded end piece A after backing off
screw B.
b) Mount the new adapter (see enclosed brochures).
NOTE: CAREFULLY CLEAN THE COUPLING
SURFACES BEFORE PERFORMING ANY
OPERATION.
3.4 - Wheel guard assembly and adjustment (optional)
a) Fasten the components to the base as illustrated in the specifi c exploded drawing.
b) The position of the wheel guard when closed can be adjusted with relative screw accessible at the back. Cor-
rect position is the one which keeps the tube exactly horizontal with the wheel guard closed.
c) Check that the microswitch is held down when the guard is closed.
Note: Do not lean on the guard during the wheel balancing cycle.
3.5 - Spacer WD
When balancing very wide wheels (9”), there is not enough space to turn the distance gauge. To withdraw the
wheel from the machine side, fi t spacer WD on the adapter body and secure it with the standard issue nuts.
When centring the wheel with the cone on the inside, fi t the DC spacer to obtain spring thrust.
3a
DC
Spring
WD
Cone
4 - CONTROLS AND COMPONENTS
4.1 - Manual rim distance gauge
This gauge serves for manual measurement of the distance of the point of application of the counterweight from the
machine.
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4.2 - Control panel and display
4
6
12
3
4
7
15
5
1-2 Digital readouts, AMOUNT OF UNBALANCE,
inside/outside
3-4 Digital readouts, POSITION OF UNBALANCE,
inside/outside
5 Indicators, correction mode selected
6 Indicators, selection made
7 Push button, unbalance reading < 5 g (25 oz)
8 Push button, operator selection
9 Correction mode selection pushbutton
10 Push button, SPLIT (unbalance resolution)
11 Push button, FUNCTIONS MENU
13
8
10
9
11
12
16 17
12 Menu selection confi rmation pushbutton
13 Push button, cycle start
14 Push button, emergency/home
15 Push buttons, manual DISTANCE setting
16 Push buttons, manual DIAMETER setting
17 Push buttons, manual WIDTH setting
14
Note: Press buttons only with your fi ngers. Never use the counterweight pincers or other pointed
objects.
When the beep signal is enabled (see FUNCTION MENU MANAGEMENT), pressing of any
push button is accompanied by a “beep”.
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4.2.1 - Operation functions menu
See optimization unbalance section
See SELF-DIAGNOSTICS chapter
See SELF-CALIBRATION chapter
mm/inch
diameter
mm/inch
width
guard
on/off
start from
guard closing
approx.
1-5g or .1-.25oz
on/off
acoustic
signal
g/oz unbalance
measurement
CONFIRM
CONFIRM
CONFIRM
CONFIRM
CONFIRM
CONFIRM
CONFIRM
unit
RETURN TO MEASUREMENT SCREEN
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b
5 - INDICATION AND USE OF THE WHEEL BALANCER
5.1 - Double operator program
This program allows memorizing the dimensions of two types of wheels. Thus two operators can work simultaneously on two different cars using the same balancing machine. The system memorizes two programs with various
preset dimensions.
1 - Press
2 - Input the dimensions (see
3 - Press to perform balancing normally
With
sions.
to select operator (1 or 2). Selection is confi rmed by panel-mounted Led.
PRESETTING WHEEL DIMENSIONS )
program 1 or 2 is called for subsequent balancing operations without having to newly enter the dimen-
5.2 - Setting the wheel dimensions
a)
DYNAMIC balancing of steel or light alloy rims with application of clip-on
weights on the edge of the rim.
From the measurement frame, press
The illuminated LEDs indicate the position where the weights should be applied. If a spin has already been carried
out, each time the mode is changed, the processor automatically recalculates the unbalance values on the basis of
the new setting.
MEASURING:
5 5a
ALU
button to select the desired correction mode.
Reading point
SETTING:
b
- Set the distance “a” between the inside of the wheel
and the machine
- Set the nominal width, normally indicated on the rim, or measure
the width “b” using the caliper gauge supplied.
- Set the nominal diameter “d” indicated on the tyre.
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This setting is also valid for the following correction modes:
The STATIC mode is required for motorcycle wheels or when it is not possible to
place the counterweights on the two sides of the rim.
Balancing of light alloy rims with application of adhesive weights on the shoulders of the rims. The position of the weights is fi xed from the edges of the rim to
the inside of the rim.
Combined balancing: adhesive weight on the outside and clip-on weight on the
inside. The position of the outside weight is fi xed from the outside edge of the
rim to the inside of the rim.
Combined balancing: adhesive weight on the inside and clip-on weight on the
outside. The position of the inside weight is fi xed from the edge of the rim to the
inside of the rim.
b)
Balancing of alloy rims with hidden application of the outside adhesive weight.
The position of the weights can be set.
MEASURING:
6
SETTING:
0 gauge
Set the nominal value shown on the wheel rim, bearing in mind that in the calculations the inside adhesive
weight is considered applied at a diameter Ø d - 1".
Note: not setting dE as it is automatic, dE = d - 2”.
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c)
MEASURING:
7
Combined balancing: clip-on weight on the inside and hidden adhesive
weight on the outside (Mercedes).The position of the weights can be set.
SETTING:
(Nominal)
Note: not setting dE as it is automatic, dE = d - 2”.
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5.2.1 - Presetting with gauge extension
Extension + 60
A B
60 mm
cm
The extension increases the distance measuring range of the gauge by 60 mm (fi g. A) and allows measuring the
distance also when the rim is of special shape (fi g. B).
Proceed as follows:
- Insert the extension on the distance gauge.
- Measure the distance as already described in the above procedures.
- After reading value “a” on the scale, return the gauge to “0” and preset the value “a + 60” in manual mode.
- Preset the diameter and width in manual mode.
5.3 - Recalculation of the unbalance values
Press after new setting of the measurement.
5.4 - Measurement result
Correction of inner side Correction of outer side
After performing a balancing spin, the amounts of unbalance are shown on the digital readouts.
The matrix displays indicate the correct angular wheel position to mount the counterweights (12 o’clock position).
When the beep signal is enabled (see section
reaches the correction position.
CONTROL OF THE FUNCTIONS MENU ), this is activated when the wheel
If the unbalance is less than the threshold selected, is displayed instead of the unbalance, with it is possible
to read the values below the threshold chosen gram by gram.
NOTE: In the event of wheels with diameter less than or equal to 13” and at temperature conditions
near 0°, the wheel balancer automatically engages a special measuring cycle involving two suc
cessive measurements. The precision of unbalance values and the reliability of the wheel
balancer are unaffected. This type of operation is reset every time the wheel balancer is started.
If at the end of any balancing run, the fl ashing symbol
wheel until unbalances are displayed.
appears, manually turn the
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5.4.1 - SPLIT function (unbalance spread)
The SPLIT function is used to position the adhesive weights behind the wheel spokes so that they are not visible. This
function should be used only in the case of static unbalance or where the hidden adhesive weight is to be applied on the
outside. Input the wheel dimensions and do a spin.
Start the SPLIT function as follows:
Example of display prior to SPLIT function
- Place the wheel in the outside unbalance correction position.
- Set one of the top spokes (preferably the one to the left of the
unbalance) to 12 o’clock.
- Press the button
- Follow the UP/DOWN indication of the positioning LEDs and
set the second top spoke to 12 o’clock.
- Press button
15
30
30
30
- Set the fi rst split unbalance to correction position 1
15
- Correction position 1
15
- Set the second split unbalance to correction position 2
30
15
- Correction position 2
N.B.: If error 24 is displayed, repeat the SPLIT function ensuring that the minimum distance between the
spokes is greater than 18 degrees. If error 25 is displayed,repeat the split function ensuring that the
maximum distance between the spikes is smaller than 120 degrees.
To return to normal unbalance display, press any button.
To perform a new spin, subsequently press the button
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5.4.2 - Out of balance optimization
- This function serves to reduce the amount of weight to be added in order to balance the wheel.
- It is suitable for static unbalance greater than 30 g.
- It improves the residual eccentricity of the tyre.
(the led
comes on ).
OPT.
Unbalance already measured
No previous
unbalance measurement
unbalance measurement
- With a piece of chalk make a reference mark on the fl ange
- With the aid of a tyre remover, turn the tyre on the rim by
- Refi t the wheel in such a way that the reference marks on the
- RH display: percentage reduction value
- LH display: actual static unbalance value which can be
TYRE
POSITION
and the rim
180°
rim and the fl ange coincide.
reduced by rotation
RIM POSITION
- Mark the two positions of the rim and tyre, and turn the tyre
on the rim until the positions correspond in order to obtain
the optimization on the display.
RETURN TO MEASUREMENT SCREEN.
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5.4.3 - ALU and STATIC modes
From the measurement screen, press button
to select to select the desired correction mode.
The 5-LED displays show the position where to apply the weights. If a spin has already been performed, the processor automatically recalculates, for each change of mode, the amounts of unbalance according to the new calculation.
5.4.4 - Automatic minimisation of static unbalance
Initial unbalance
Phase shift
Possible approximations
static residual
With conventional
wheel balancer
static residual
static residual
Choice with minimum
static residual
static residual
This program is designed to improve the quality of balancing without any mental effort or loss of time by the operator. In fact by using the normal commercially available weights, with pitch of 5 in every 5 g, and by applying the two
counterweights which a conventional wheel balancer rounds to the nearest value, there could be a residual static
unbalance of up to 4 g. The damage of such approximation is emphasized by the fact that static unbalance is cause
of most of disturbances on the vehicle. This new function automatically indicates the optimum entity of the weights
to be applied by approximating them in an “intelligent” way according to their position in order to minimize residual
static unbalance.
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6 - SET UP
6.1 - Self-diagnostics
DISPLAY TEST
All displays, readouts and Led’s should light up in sequence
- On the right-hand display the current position of the wheel is indicated
with numbers from 0 to 127.
- Turning the wheel in the direction of rotation for the unbalance measurement, the word UP must appear on the left-hand display.
- With one full turn of the wheel (in the direction of rotation) should
appear only once:
- Test parameter
END OF SELF-DIAGNOSTICS
CANCEL SELF-DIAGNOSTICS IN ANY PHASE.
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6.2 - Self-calibration
For machine self-calibration proceed as follows :
▪ Fit a wheel with steel rim of average dimensions on the shaft. Example 6” x 14” (± 1”)
▪ Preset the exact dimensions of the wheel mounted.
CAUTION !! Presetting of incorrect dimensions would mean that the machine is not correctly
calibrated, therefore all subsequent measurements will be incorrect until a new
self-calibration is performed with the correct dimensions!!
- Perform a spin under normal conditions.
- Add a sample weight of 60 g. (2.00 oz) on the outside in any angular position.
- Shift the a sample weight from the outside to the inside keeping the same
angular position.
- Rotate the wheel so to have the a sample weight to the 12 o’clock position.
END OF SELF-CALIBRATION
CANCEL SELF-CALIBRATION IN ANY PHASE.
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7 - ERRORS
During machine operation, various causes of faulty operation could occur. If detected by the microprocessor, they
appear on the display as follows:
ERRORS CAUSES CONTROLS
Black The wheel balancer does not switch on. 1. Verify correct connection to the mains.
Err. 1 No rotation signal. 1. Verify belt tautness.
Err. 2 Speed too low during detection.
Err. 3 Unbalance too high. 1. Verify wheel dimension settings.
Err. 4 Rotation in opposite direction.
Err. 5 Guard open
Err. 7 /
Err. 8
Err. 9 NOVRAM parameter write error. Replace the computer board.
Err. 11 Speed too high error.
Err. 12 Unbalance measuring cycle error. 1. Verify phase pick-up board function.
Err.13/
Err.14/
Err.15/
Err.16/
Err.17/
Err.18
Err. 24 Distance between the spokes smaller
Err. 25 Distance between the spokes greater
During unbalance measurement rotation,
wheel speed is less than 42 rpm.
After pressing [START], the wheel
begins to rotate in the opposite direction
(anticlockwise).
The [START] pushbutton was pressed
without fi rst closing the guard.
NOVRAM parameter read error 1. Repeat machine calibration
During unbalance measurement rotation,
wheel speed is more than 270 rpm.
Unbalance measurement error. 1. Verify phase pick-up board function.
than 18 degrees.
than 120 degree
Wheel stopped before completing the
unbalance measuring cycle
2. Verify and eventually replace the fuses on the power card.
3. Verify monitor function.
4. Replace the computer board
2. Verify the function of the phase pick-up board and, in particular,
the reset signal.
3. Replace the phase pick-up board.
4. Replace the computer board.
1. Make sure that a vehicle wheel is mounted on the wheel balancer.
2. Verify belt tautness.
3. Verify the function of the phase pick-up board and, in particular,
the reset signal.
4. Replace the computer board.
2. Check detection unit connections.
3. Perform machine calibration.
4. Mount a wheel with more or less known unbalance (less than 100
grammes) and verify the response of the machine.
5. Replace the computer board.
1. Verify the connection of the UP/DOWN – RESET signals on the
phase pick-up board.
1. Reset the error.
2. Close the guard.
3. Verify the function of the protection uSwitch.
4. Press the [START] pushbutton.
2. Shut down the machine.
3. Wait for a minimum time of ~ 1 Min.
4. Re-start the machine and verify correct operation.
5. Replace the computer board.
1. Check if there is any damage or dirt on the timing disc.
2. Verify the function of the phase pick-up board and, in particular,
the reset signal.
3. Replace the computer board.
2. Verify correct motor operation.
3. Verify belt tautness.
4. Replace the computer board.
2. Check detection unit connections.
3. Verify machine earth/ground connection.
4. Mount a wheel with more or less known unbalance (less than 100
grammes) and verify the response of the machine.
5. Replace the computer board.
1. The minimum distance between the spokes where to split the
unbalance must be greater than 18 degrees
2. Repeat the SPLIT function increasing the distance between the
spokes.
1. The minimum distance between the spokes where to split the
unbalance must be smaller than 120 degrees
2. Repeat the SPLIT function increasing the distance between the
spokes.
1. Manually spin the wheel until the unbalance is displayed
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7.1 - Inconsistent unbalance readings
It may occur that after balancing a wheel, when removing it from the wheel balancer and then remounting it, the
wheel is not balanced. This is not the result of an incorrect indication by the machine, but only of incorrect mounting
of the wheel on the fl ange, i.e. in the two mountings the wheel has assumed a different position with respect to shaft
axis of the wheel balancer. If the wheel has been mounted on the fl ange with screws, it may be that the screws have
not been tightened correctly in gradual criss-cross manner one after the other, or (as often occurs) holes have been
drilled in the wheel with too wide tolerances.
Small errors, up to 10 grams (0.4 oz), are to be considered normal in wheels locked with a cone: the error is normally
greater for wheels locked with screws or studs.
If, after balancing, the wheel is still unbalanced when refi tted on the vehicle, this could be due to the unbalance of
the brake drum or very often is due to the screw holes in the rim and the drum drilled with too wide tolerances. In this
case a readjustment would be advisable using the wheel balancer with the wheel mounted.
8 - ROUTINE MAINTENANCE
Before carrying out any operation on the machine, cut the power supply to the machine.
8.1 - Replacing the protection fuses
A protection fuse is fi tted on the power board, accessible by dismantling the weight shelf (see Exploded Drawings). If
fuses require replacement, use ones with an identical current rating.
If the fault persists, contact Technical Service.
NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE.
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