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Instructions for use
I
CONTENTS
1 - GENERAL 3
1.1 - GENERAL SAFETY REGULATIONS
3
1.1.1 - STANDARD SAFETY DEVICES
3
1.2 - FIELD OF APPLICATION
3
1.3 - OVERALL DIMENSIONS
3
1.4 - TECHNICAL DATA
4
2 - HANDLING AND LIFTING
4
3 - STARTUP
4
3.1 - ANCHORING
4
3.2 - ELECTRICAL CONNECTION
4
3.3 - ADAPTER MOUNTING
5
3.4 - WD SPACER
5
4 - CONTROLS AND COMPONENTS
5
4.1 - MANUAL DISTANCE MEASUREMENT GAUGE
5
4.2 - BRAKE PEDAL 5
4.3 - KEYBOARD AND DISPLAY
6
4.3.1 - FUNCTION MENU MANAGEMENT 7
5 - INSTRUCTIONS FOR USE OF THE WHEEL BALANCER 8
5.1 - SETTING THE WHEEL DIMENSIONS 8
5.1.1 - DIMENSIONS UNIT OF MEASURE
10
5.1.2 - PRESETTING WITH GAUGE EXTENSION 10
5.1.3 - DOUBLE OPERATOR PROGRAM
10
5.2 - MEASUREMENT RESULT 11
5.3 - RECALCULATION OF THE UNBALANCE VALUES 11
5.4 - SPLIT FUNCTION (HIDDEN WEIGHT)
12
5.5 - OUT OF BALANCE OPTIMIZATION
13
5.6 - AUTOMATIC MINIMISATION OF STATIC UNBALANCE
13
6 - SET-UP
14
6.1 - AUTODIAGNOSTICS
14
6.2 - AUTOCALIBRATION
14
7 - ERRORS 15
7.1 - INCONSISTENT UNBALANCE READINGS
16
8 - ROUTINE MAINTENANCE 16
8.1 - REPLACING THE PROTECTION FUSES
16
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956
500
926
1
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1 - General
1.1 - General safety regulations
-The wheel balancer may only be used by duly authorized and trained personnel.
- The wheel balancer must not be used for purposes other than those described in the instruction manual.
- The wheel balancer must not be modifi ed in any way except for those modifi cations made
explicitly by
the manufacturer.
- Do not remove the safety devices. Any work on the machine must be carried out by specialised personnel
only.
- 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 fl ange.
- The machine operator must not wear clothes with fl apping parts. Do not allow unauthorized personnel to
approach the wheel balancer when the cycle is running.
- Avoid placing objects in the base which could impair the correct operation of the wheel balancing machine.
1.1.1 - Standard safety devices
- The wheel guard is not compulsory since the balancing speed is less than 100 min
-1.
1.2 - Field of application
The machine is designed for balancing wheels of cars, light commercial vehicles or motorcycles weighing less than 75 kg.
It can be operated in a temperature range of 0° to + 45° C.
The following functions are provided: ALUS; SPLIT; Unbalance optimisation; Autodiagnostics; Autocalibration.
1.3 - Overall dimensions
2 2a
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1.4 - Technical data
Note: DO NOT LIFT THE WHEEL BALANCER USING OTHER GRIPS.
Single-phase power supply 230 V - 50/60 Hz
AC - 12/24 V DC
Protection class IP 54
Max. power absorbed 0,03 Kw
Balancing speed < 100 min
-1
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 - 210 mm
Rim width setting range 1.5” - 20” or 40 - 510 mm
Diameter setting range 10” - 30” or 265 - 765 mm
2 - Handling and lifting
3 - Startup
3.1 - Anchoring
The machine can operate on any flat non resilient floor.
Make sure that the machine rests solely on the three support points provided (Fig.2a).
3.2 - Electrical connection
The machine is provided with net supply (AC) and cable for battery supply (12-24VDC).
The supply voltage (and mains frequency) is given on the machine nameplate. It cannot be changed.
The machine should not be started up without proper earthing.
Connection to the mains should be through a slow acting safety swich rated at 0.5 A (230V). See attached diagram.
Spring
DC
WD
Cone
3
3a
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3.3 - Adapter mounting
4 - Controls and components
4.1 - Manual distance measurement gauge
This gauge serves to manually measure the distance between the point of application of the counterweight and the
machine
.
4.2 - Brake pedal
Allows braking the wheel at the end of the balancing cycle. It is also useful during application of the counterweights.
The wheel balancer is supplied complete with cone
flanges for fixing wheels with a central hole. Other
optional adapters can be mounted:
a) Remove the threaded end-piece A after unscrewing
the screw B.
b) Mount the new adapter (see attached sheets).
Note: CAREFULLY CLEAN THE COUPLING
SURFACES BEFORE PERFORMING ANY
OPERATION.
3.4 - WD spacer
When balancing very wide wheels (9”), there is not enough space to turn the distance gauge. To move the wheel
away from the machine side, fit the WD spacer on the flange body and secure it with the standard issue nuts. When
centring the wheel with cone from the inside, mount the DC spacer to obtain spring thrust.
15
10
8 9
12
11
13
14
6
4
3
16
17 18
1
5
4
2
19
7
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4.3 - Keyboard and display
1-2 Digital readouts, AMOUNT OF UNBALANCE, inside/
outside
3-4 Digital readouts, POSITION OF UNBALANCE,
inside/outside
5 Indicators, selection made
6 Push button, FUNCTION MENU
7 Push button, SPLIT (unbalance resolution)
8 Unbalance optimization selection button
9 Push button, unbalance reading < 5 g (.25 oz)
10 ALUS correction mode selection button
11
Correction mode selection button
12 Selecting the unit of measure for diameter
and width
13 Push button, operator selection
14 MENU selection confirmation pushbutton
15 HOME push button
16 Manual DISTANCE setting button
17 Manual WIDTH setting button
18 Manual DIAMETER setting button
19 Indicators, selection made
Note: - Press buttons only with your fingers. Do not use the counterweight grippers or other pointed
objects.
-
In case of audible alarm connected (see par. OPERATION FUNCTIONS MENU), any push button
operation sounds with a “b
eep” alarm.
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4.3.1 - Function menu management
approx.1-5 g
or
0.1-0.25 oz
See chapter on AUTODIAGNOSTICS
See chapter on AUTOCALIBRATION
g/oz unit of
measure
unbalance
CONFIRM
on/off
audible
alarm
CONFIRM
CONFIRM
RETURN TO MEASUREMENT FRAME
5
b
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5 - Instructions for use of the wheel balancer
5.1 - 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 to select the desired correction mode.
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.
- 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.
Reading
- Measuring
- Setting
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 fixed 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 fixed 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 fixed from the edge of the rim to the
inside of the rim.
This setting is also valid for the following correction modes:
+
6
7
+
Fianco
interno
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Note: not setting dE as it is automatic, dE = d - 2".
0 gauge
Note: not setting dE as it is automatic, dE = d - 2".
b)
Balancing of alloy rims with hidden application of the outside adhesive weight.
The position of the weights can be set.
On the measurement screen, press the button :
- Measuring: Setting:
c)
Combined balancing: clip-on weight on the inside and hidden
adhesive weight on the outside (Mercedes).The position of the
weights can be se
t.
On the measurement screen, press the button :
- Measuring: Setting:
Inside
Nominal
Inside
Nominal
Note: Hold the button
for more than
2 seconds when the value of any one of
the dimensions appears on the display.
0 gauge
cm
A B
60 mm
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5.1.1 - Dimensions unit of measure
The distances are always expressed in mm. To set the diameter or width in mm press the
button when the
current diameter or width value is shown on the display.
Default always in inch.
5.1.2 - Presetting with gauge extension
The extension increases the distance measuring range of the gauge by 60 mm (fig. A) and allows measuring the
distance also when the rim is of special shape (fig. 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.
Extension + 60
5.1.3 - Double operator program
This program allows memorizing the dimensions of two types of wheels. Thus two operators can work simultaneously
on two differents cars using the same balancing machine. The system memorizes two programs with various present
dimensions.
1 - Press
to select operator (1 or 2). Selection is confirmed by panel-mounted Led.
2 - Enter the dimensions (see PRESETTING OF WHEEL DIMENSIONS).
3 - Perform a manual spin to store the program.
With program 1 or 2 is called for subsequent balancing operations without having to newly enter the
dimensions.
5.2 - Measurement result
Inside correction
Outside correction
After performing a balancing spin, the amounts of unbalance are shown on the digital readouts.
The illuminated LEDs 3 and 4 indicate the correct angular position of the wheel to mount the counterweights
(12 o’clock).
If the unbalance is less than the threshold value selected,
the values below the threshold can be read, selected gram by gram.
is displayed instead of the unbalance value; with
5.3 - Recalculation of the unbalance values
Press after new setting of the measurement.
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15
30
15
15
30
30
15
30
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5.4 - SPLIT function (hidden weight)
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
- Set the first split unbalance to correction position 1
- Correction position 1
- Set the second split unbalance to correction position 2
- 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 spin the wheel again, manually bring the wheel up to speed.
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5.5 - 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. (the led
OPT.
comes on ).
- It improves the residual eccentricity of the tyre.
RIM
POSITION
TYRE
POSITION
- With a piece of chalk make a reference mark on the flange and the rim
- With the aid of a tyre remover, turn the tyre on the rim by 180°
- Refit the wheel in such a way that the reference marks on the rim and the flange
coincide.
- Perform a manual spin
- RH display: percentage reduction value
- LH display: actual static unbalance value which can be reduced by rotation
- 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.
CANCEL OPTIMISATION IN ANY PHASE
Unbalance already measured
No previous
unbalance
measurement
unbalance measurement
Perform a manual spin
Initial unbalance
Possible approximations
residual static
residual static residual static residual static
With conventional
wheel balancer
Choice with
minimum static
residual
5.6 - Automatic minimisation of static unbalance
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.
phase shift
6 - Set-up
6.1 - Autodiagnostics
Performs tests useful for maintenance staff.
6.2 - Autocalibration
For autocalibration proceed as follows:
- Fit a wheel with steel rim of average dimensions on the shaft. Example 6” x 14” (± 1”)
- Set the exact dimensions of the wheel mounted.
CAUTION !! Setting incorrect dimensions will result in the machine not being properly calibrated and hence all
the subsequent measurements will be incorrect until a new autocalibration is performed with the
correct dimensions!!
- Perform a manual spin
- Add a 60 g. sample weight (2.00 oz) on the outside in any angular position.
- Perform a manual spin
- Shift the sample weight from the outside to the inside keeping the same
angular position.
- Perform a manual spin
- Turn the wheel until the sample weight is in the 12 o’clock position.
END OF AUTOCALIBRATION
CANCEL AUTOCALIBRATION IN ANY PHASE.
6.2.1 – Specic procedure for exclusive use of the driving wheels (from memory M2691)
- Use one driving wheel with a rim width of not less than 5.5”
- Apply the sample adhesive weight of 60 g alternatively on the balconies as shown in the attached Figure 8a
- Measure the dimensions as indicated in Fig. 5
- Proceed with calibration as already described.
N.B.: The machine calibrated in this way, operates properly only for the correction modes shown below.
8a
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8b
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7 - Errors
During machine operation there may be various causes of malfunctioning which, if detected by the microprocessor,
are indicated on the display:
ERRORS CAUSES CONTROLS
Black The wheel balancer does not come on. 1. Check proper connection to the mains.
2. Check and if necessary replace the fuses on the power board.
3. Replace the computer board.
Err. 1
No rotation signal. 1. Check belt tautness.
2. Check functioning of the phase generator and, in particular, the
reset signal.
3. Replace the phase generator.
4. Replace the computer board.
Err. 2 Too low speed during measurement.
During the unbalance measurement
revolutions, the wheel speed has fallen to
below 42 rpm.
1. Check that a vehicle wheel has been mounted on the wheel
balancer.
2. Check belt tautness.
3. Check functioning of the phase generator and, in particular, the
reset signal.
4. Replace the computer board.
Err. 3 Too high unbalance. 1. Check the wheel dimension setting.
2. Check the sensor connections.
3. Run the machine calibration function.
4. Mount a wheel with a more or less known unbalance (less than 100
grams) and check the machine response.
5. Replace the computer board.
Err. 4
Rotation in opposite direction.
After pressing [START], the wheel
starts turning in the opposite direction
(anticlockwise).
1. Verify the connection of the UP/DOWN - RESET signals on the
phase generator.
Err. 7 /
Err. 8 /
Err. 9
NOVRAM parameter read error 1. Repeat machine calibration
2. Shut down the machine.
3. Wait for at least ~ 1 min.
4. Restart the machine and check proper functioning.
5. Replace the computer board.
Err. 11 Too high speed error.
The average spinning speed is greater than
240 rpm.
1. Check if there is any damage or dirt on the timing disc.
2. Check functioning of the phase generator and, in particular, the
reset signal.
3. Replace the computer board.
Err. 12 Unbalance measuring cycle error.
1. Verify phase pick-up board function.
2. Verify correct motor operation.
3. Verify belt tautness.
4. Replace the computer board.
Err.13/
Err.14/
Err.15/
Err.16/
Err.17/
Err.18
Unbalance measurement error. 1. Check functioning of the phase generator.
2. Check the sensor connections.
3. Check the machine earthing connection.
4. Mount a wheel with a more or less known unbalance (less than 100
grams) and check the machine response.
5. Replace the computer board.
Err. 24
Distance between the spokes smaller
than 18 degrees.
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.
Err. 25
Distance between the spokes greater
than 120 degree
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.
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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 flange, 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 flange 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 refitted 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 fitted 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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