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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 - WHEEL GUARD ASSEMBLY AND ADJUSTMENT (OPTIONAL)
5
3.5 - WD SPACER (OPTION)
5
4 - CONTROLS AND COMPONENTS
5
4.1 - MANUAL DISTANCE MEASUREMENT GAUGE 5
4.2 - KEYBOARD AND DISPLAY
6
4.2.1 - FUNCTION MENU MANAGEMENT 7
5 - INSTRUCTIONS FOR USE OF THE WHEEL BALANCER 8
5.1 - SETTING THE WHEEL DIMENSIONS 8
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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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
- 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.
- Before disassembling the weight shelf, remove the guard (see specifi c instructions)
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 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.
the manufacturer.
-1.
1.3 - Overall dimensions
1
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1.4 - Technical data
Single-phase power supply 115 / 230 V - 50/60 Hz
Protection class IP 54
Max. power absorbed 0,8 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 - 252
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
Note: DO NOT LIFT THE WHEEL BALANCER USING OTHER GRIPS.
3 - Startup
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 (Fig.2a).
It is advisable to secure the system to the ground using the specifi c feet (Fig. 2a). if the machine is
continually used with wheels weighing over 35 kg.
3.2 - Electrical connection
The machine is supplied with a single-phase mains cable plus earth (ground).
The power supply voltage (and mains frequency) is indicated on the machine identifi cation plate and cannot be
changed. Connection to the mains must always be made by expert personnel.
The machine must not be set up without proper earthing.
Connection to the mains should be through a slow acting safety switch rated at 3 A (230V) or 8 A(115 V).
See enclosed diagram.
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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.
The wheel balancer is supplied complete with cone
adapters 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 flange (see attached sheets).
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 specific exploded view.
b) With the guard closed check that the microswitch prod has slipped into place on the ring.
c) Appropriately adjust the angular position of the control ring.
N.B.: Do not lean on the guard during the wheel balancing cycle.
3.5 - WD spacer (option)
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.
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3
1
5
2
10
9
11
15
16
12
13
17
18
19
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4.2 - Keyboard and display
1-2 Digital readouts, AMOUNT OF UNBALANCE, inside/
outside
3-4 Digital readouts, POSITION OF UNBALANCE,
inside/outside
5 Inside correction mode selection button
6 Indicators, correction mode selected
7 Outside correction mode selection button
8 Special function indicators
9 Manual DISTANCE setting button
10 Manual WIDTH setting button
11
Manual DIAMETER setting button
12 Push button, FUNCTION MENU
13 Balancing cycle stop button
14 Balancing cycle start button
15 Unbalance optimization push button
16 Push button, SPLIT (unbalance resolution)
17 HOME push button
18 MENU selection confirmation pushbutton
19 Push button, unbalance reading < 5 g (.25 oz)
Note: Press buttons only with your fingers. Do not use the counterweight grippers or other pointed objects.
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4.2.1 - Function menu management
start from
guard closing
approx. -5 g or
0.1-0.25 oz
See chapter on AUTODIAGNOSTICS
See chapter on AUTOCALIBRATION
g/oz unit of
measure
unbalance
RETURN TO MEASUREMENT SCREEN
CONFIRM
CONFIRM
CONFIRM
mm/inch
diameter
mm/inch
width
CONFIRM
CONFIRM
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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
inside and outside 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:
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Setting:
0 gauge
Note: Hold the
button down for more
than 2 seconds when the
value of any one of the
dimensions appears on
the display.
Balancing of alloy rims with hidden application of the outside adhesive weight.
The position of the weights can be set.
- Measuring:
(Nominal)
Note: Not setting dE as it is automatic, dE = d - 2”.
Outside
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c)
Combined balancing: clip-on weight on the inside and hidden adhesive
weight on the outside (Mercedes).
The position of the weights can be set.
0 gauge
Setting:
Note: not setting dE as it is automatic, dE = d - 2”.
- Measuring:
Note: Hold the
button down for more
than 2 seconds when the
value of any one of the
dimensions appears on
the display.
(Nominal)
Outside
cm
d) Setting with gauge extension
A
B
Extension + 60
60 mm
The extension increases the gauge distance measurement field by 60 mm (Fig. A) and allows distance
measurement even when the rim has a special profile (Fig. B).
Proceed as indicated below:
- Fit the extension on the distance gauge.
- Measure the distance as already described.
- Having read value “a” on the dial, reset the gauge to 0 and set by hand the value “a + 60”
- Manually set the diameter and the width.
5.2 - Measurement result
8a
Inside correction
8b
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.
Note : in the case of wheels with a diameter less than or equal to 13” and at temperature conditions near 0°, the wheel
balancer automatically inserts a special measuring cycle composed of two successive measurements.
The accuracy of the unbalance values and the reliability of the wheel balancer remain unchanged. This type of
operation is reset each time the wheel balancer is started.
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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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 carry out a new spin, press the
button.
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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.
- 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.
- 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
The led lights up
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 com
mercially 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.
Initial unbalance
Possible approximations
phase shift
With conventional
wheel balancer
Choice with minimum
static residual
residual static
residual static
residual static
residual static
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 spin under normal conditions.
- Add a 60 g. sample weight (2.00 oz) on the outside in any angular position.
- Shift the sample weight from the outside to the inside keeping the same
angular position.
rn the wheel until the sample weight is in the 12 o’clock position.
- Tu
END OF AUTOCALIBRATION
CANCEL AUTOCALIBRATION IN ANY PHASE.
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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. 5
Guard open
The [START] pushbutton was pressed
without first closing the guard.
1. Reset the error.
2. Close the guard.
3. Verify the function of the protection uSwitch.
4. Press the [START] button.
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.14/
Err.15/
Err.16/
Err.17/
Err. 18/
Err. 19
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.21
Motor on for more than 15 seconds. 1. Check functioning of the phase generator.
2. Check the connections on the power board.
3. Replace the computer board.
Err.22
Maximum number of spins possible for
the unbalance measurement has been
exceeded.
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. 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 tight
ened 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.
Err.32/
Err.33/
Err.34/
Err.35/
Err.36/
Err.37
Errors related to test functions of the wheel
balancer.
1. Cancel the error and continue using the wheel balancer as normal.
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