CEMB USA C68SE -B User Manual

Operating instructions

I

Contents page

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 HOISTING ................................................................................................................................................... 4

3 - COMMISSIONING ................................................................................................................................................................... 5

3.1 - ANCHORING ............................................................................................................................................................ 5

3.2 - ELECTRICAL CONNECTION .................................................................................................................................. 5

3.3 - PNEUMATIC CONNECTION (Versions SE and/or dispenser) ................................................................................. 5

3.4 - TO REPLACE THE ROLL OF LEAD ........................................................................................................................ 5

3.5 - EXTRA SAFETY DEVICES (VERSION SE) ............................................................................................................. 6

3.6 - ADAPTER MOUNTING ............................................................................................................................................ 6

3.7 - GUARD MOUNTING AND ADJUSTMENT (Exploded drawing 4) ............................................................................ 6

3.8 - SPACER WD.............................................................................................................................................................. 6

4 - CONTROLS AND COMPONENTS .......................................................................................................................................... 7

4.1 - BRAKE PEDAL ......................................................................................................................................................... 7

4.2 - PNEUMATIC LOCKING PEDAL (Version SE) .......................................................................................................... 7

4.3 - AUTOMATIC DISTANCE AND DIAMETER GAUGE ................................................................................................ 7

4.4 - AUTOMATIC WIDTH GAUGE .................................................................................................................................. 7

4.5 - COUNTERWEIGHT DISPENSER (OPTIONAL) ....................................................................................................... 7

4.6 - AUTOMATIC WHEEL POSITIONING......................................................................................................................... 7

4.7 - CLOCK CONTROL.................................................................................................................................................... 7

4.8 - KEYBOARD............................................................................................................................................................... 8

5 - INDICATIONS AND USE OF THE WHEEL BALANCER ........................................................................................................ 9

5.1 - INITIAL SCREEN ..................................................................................................................................................... 9

5.1.2 SCREEN-SAVE SCREEN ....................................................................................................................................... 9

5.2 - MENU ACCESS DIAGRAM ................................................................................................................................... 10

5.3 - PRESETTING OF WHEEL DIMENSIONS .............................................................................................................. 11

5.3.1 AUTOMATIC PRESETTING ...................................................................................................................................11

5.3.2 TO CALL MEMORIZED MEASUREMENTS .......................................................................................................... 12

5.3.3 - MANUAL PRESETTING ...................................................................................................................................... 13

5.3.4 - PRESETTING FOR LARGE-SCALE PRODUCTION............................................................................................ 15

5.4 - USER CONTROL ................................................................................................................................................... 15

5.4.1 - USER MEMORIZATION ...................................................................................................................................... 15

5.4.2 - TO CALL USER ................................................................................................................................................... 15

5.5 - RESULT OF MEASUREMENT ............................................................................................................................... 16

5.5.1 - INDICATION OF EXACT CORRECTION WEIGHT POSITION ......................................................................... 17

5.5.2 - “SPLIT” CONTROL .............................................................................................................................................. 18

5.5.3 - UNBALANCE OPTIMIZATION ............................................................................................................................ 19

5.5.4 - ALU AND STATIC MODES .................................................................................................................................. 19

5.5.5 - TO CANCEL STATIC UNBALANCE .................................................................................................................... 20

5.6 - STATISTICS ............................................................................................................................................................. 20

5.7 - DISPENSER ........................................................................................................................................................... 21

5.8 - WHEN AND WHY MATCHING................................................................................................................................. 21

5.9 - ECCENTRICITY MEASUREMENT (OPTIONAL) ................................................................................................... 23

6 - SETUP ................................................................................................................................................................................... 25

6.1 - LANGUAGE ............................................................................................................................................................ 25

6.2 - UNIT OF UNBALANCE MEASUREMENT ............................................................................................................. 25

6.3 - UNBALANCE DISPLAY THRESHOLD ................................................................................................................... 25

6.4 - UNBALANCE DISPLAY PITCH .............................................................................................................................. 25

6.5 - SPIN WITH GUARD CLOSED ............................................................................................................................... 25

6.6 - SCREEN-SAVER TIME .......................................................................................................................................... 25

6.7 - VISUAL ECCENTRICITY CHECK .......................................................................................................................... 25

6.8 - ACUSTIC SIGNAL.................................................................................................................................................... 25

6.9 - CLOCK SET-UP ....................................................................................................................................................... 25

6.10 - FIRST HARMONIC LIMIT ...................................................................................................................................... 25

7 - SPECIAL CALIBRATIONS AND FUNCTIONS ..................................................................................................................... 26

7.1 - ENABLING OF WIDTH MEASUREMENT .............................................................................................................. 26

7.2 - ENABLING OF THE DISPENSER ......................................................................................................................... 26

7.3 - PRESETTING THE CUSTOMER AND USER NAME .............................................................................................. 26

7.4 - ENABLING OF ECCENTRICITY MEASUREMENT................................................................................................ 26

7.5 - DRAWER UNIT ........................................................................................................................................................ 26

7.6 - CALIBRATIONS........................................................................................................................................................ 26

7.6.1 - GAUGE CALIBRATION ......................................................................................................................................... 26

7.6.2 - DISPENSER CONSTANTS ................................................................................................................................... 27

7.6.2.1 - DISPENSER CALIBRATION .............................................................................................................................. 27

7.6.2.2 - NUMBER OF DISPENSER PULSES IN ADVANCE........................................................................................... 27

7.6.3 - ADAPTER ECCENTRICITY CORRECTION......................................................................................................... 27

7.6.4 - WHEEL BALANCER CALIBRATION ..................................................................................................................... 27

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7.6.5 - TEST DRAWER UNIT ........................................................................................................................................... 27

7.6.6 - SELF TEST BALANCING MACHINE .................................................................................................................... 27

7.6.6.1 - TO CHECK THE ENCODER .............................................................................................................................. 28

7.7 - SETUP NAMES....................................................................................................................................................... 28

8 - ERRORS ................................................................................................................................................................................ 29

9 - ROUTINE MAINTENANCE .................................................................................................................................................... 30

9.1 - SCHEDULE MAINTENANCE................................................................................................................................... 30

9.2 - TO REPLACE THE FUSES .................................................................................................................................... 30

9.3 - ADAPTER END PIECE, SPINDLE P........................................................................................................................ 30

10 - RECOMMENDED SPARE PARTS LIST ............................................................................................................................. 31

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1- GENERAL

1.1 - GENERAL SAFETY RECOMMENDATIONS

- The balancing machine should only be used by duly authorized and trained personnel.

- The balancing machine should not be used for purposes other than those described in the
instruction manual.

- Under no way should the balancing machine be modifi ed except for those modifi cations made
explicitly by the manufacturer.

- Never remove the safety devices. Any work on the machine should only be carried out by duly
authorized specialist personnel.

- Do not use 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 not wear clothes with fl apping edges. Make sure that unauthorized
personnel do not approach the balancing machine during the work cycle.

- Avoid placing counterweights or other objects in the base which could impair the correct
operation of the balancing machine.

1.1.1 - STANDARD SAFETY DEVICES

- STOP push button for stopping the wheel under emergency conditions.

- The safety guard of high impact plastic is with shape and size designed to prevent risk of
counterweights from fl ying out in any direction except towards the fl oor.

- A microswitch prevents starting the machine if the guard is not lowered and stops the wheel
whenever the guard is raised.

1.2 - FIELD OF APPLICATION

The machine is designed for balancing car or motorcycle wheels weighing less than 65 kg. It can be
operated within a temperature range of 0° to +45°C.
It is provided with an automatic adhesive counterweight dispenser (optional).
It can measure the geometric radial run-out of the wheels (optional)
Fitted with two laser indicators for the correction position.
Can be fi tted with a weight-holder drawer unit with luminous indicators of the weight
to be used (optional)

1.3 - OVERALL DIMENSIONS (Standard protection)

Fig. 1

1505

1385

1695

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1.4 - SPECIFICATION

Single phase power supply..............................115 - 230 V 50-60 Hz

Protection class ...............................................IP 54

Max. power consumption.................................1100 W

Monitor ............................................................SVGA 15"

Balancing speed approx..................................180 min

Cycle time for average wheel (14 Kg) ..........5 seconds

Balancing accuracy .........................................0,5 grams

Position resolution ...........................................± 1.4 °

Average noise level .........................................< 70 dB(A)

Distance rim - machine....................................0 - 250 mm (400 mm can be preset)

Larghezza cerchione impostabile ...................1.5" ÷ 20" or 40 ÷ 510 mm

Diameter setting range ....................................10" ÷ 24" or 265 ÷ 615 mm

Total wheel diameter within guard ...................870 mm (standard)

Total wheel width within guard.........................430 mm (standard)

Max. wheel weight ...........................................65 Kg.

Min/max. compressed air pressure .................7 ÷ 10 Kg/cm

.........................................................................approx. 0.7 ÷ 1 Mpa;

.........................................................................approx. 7 ÷ 10 BAR;

.........................................................................approx. 100 ÷ 145 PSI.

-1

2

2 - HANDLING AND HOISTING

N.B. DO NOT HOIST THE MACHINE BY LEVERING UNDER THE CABINET

Fig. 2

Fig. 2 A

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3 - COMMISSIONING

3.1 - ANCHORING

The machine can be operated on any fl at non-resilient fl oor.
Make sure that the machine rests solely on the three support points provided (fi g. 2a).
If possible, it is advisable to anchor to the fl oor using relative mounting feet (see fi g. 2a) in the event of
continual use with wheels weighing over 35 Kg.

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 may NOT be changed.
Connection to the mains should always be made by expert personnel.
The machine should not be started up without proper earth (ground) connection.
Connection to the mains should be through a slow acting safety switch rated at 4A amp (230V) or 10
a m p ( 1 1 5 V ) .

3.3 - PNEUMATIC CONNECTION

For operation of the spindle with pneumatic locking (constant thrust air spring) connect the balancing
machine to the compressed air main. The connection fi tting is located at the back of the machine.
A pressure of at least 7 kg/cm2 (approx. 0.7 MPa or 7 BAR or 100 PSI) is required for correction
operation of the release device.

3.4 - TO REPLACE THE ROLL OF LEAD

(for machines provided with the dispenser option)
a) Open the cabinet door.
b) Mount the roll and insert the strip of lead under the rubber covered wheel; for easier insertion, act

on pin (1).

c) Close the cabinet.
d) Press the push buttons to dispense a counterweight with relative cutting.

N.B. - Mount the roll of lead correctly on the spool (2)

- Never carry out point d) with the cabinet open.

- When the roll of lead is close to fi nishing (last 2-3 rounds of strip), lift the lead from the

spool to decrease its curvature.

- Avoid bending the lead strip: the presence of strong bends and counterbends would

impair correct operation of the feed system.

- If the dispenser is not used for a long period, it could be possible that the fi rst weight to

be distributed is not accurate, therefore it should be discarded.

Fig. 3

1

2

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3.5 - EXTRA SAFETY DEVICES

- Wheel always locked even when there is pressure failure during the balancing cycle.

- Rotary block wheel retainer which, in the event of accidental pressing of the pneumatic locking
pedal during the balancing cycle, avoids risk of the wheel slipping from the adapter.

- Always actuate the unlocking control pedal with the machine stationary in order to avoid stress
and abnormal wear on the adapter.

3.6 - ADAPTER MOUNTING

The balancing machine is supplied complete with cone adapter for fastening wheels with central bore.
Other optional adapters can be mounted; hardened shaft and tapers.

Fig. 4 Fig. 4

C68 Professional a) Unscrew rod B.
b) Unscrew end-piece A.
c) Fit the new adapter.

N.B. If there is no pressure, to remove the wheel, merely unscrew rod B to its full extent.

3.7 - GUARD MOUNTING AND ADJUSTMENT

a) Fasten the components to the base as illustrated in specifi c exploded view.
b) The position of the wheel guard when closed can be adjusted with relative screw accessible at the back.
Correct position is the one which keeps the tube exactly horizontal with wheel guard closed.
c) Check that the microswitch is held down when the guard is closed.
d) Adjust the angular position of microswitch control.

3.8 - 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
other cone as a spacer to obtain spring thrust.

Spring

SPACER WD

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Spacer joint

Centring Joint

4 - CONTROLS AND COMPONENTS

4.1 - BRAKE PEDAL

4.2 - PNEUMATIC LOCKING PEDAL

This pedal allows the operator to hold
the wheel when fi tting the counterwei­ghts. It must not be actuated during

the measuring cycle.

This pedal allows releasing the
device fastening the wheel on the
adapter. Do not actuate this pedal

during the machine cycle and/or
when adapters other than the
standard cone adapter are moun­ted.

The pedal has a stable position; UP
to clamp the wheel, held DOWN to
release it.

4.3 - AUTOMATIC DISTANCE AND DIAMETER GAUGE

This gauge allows measurement of the distance of the wheel from the machine and the wheel diameter at
the point of application of the counterweight.
It also allows correct positioning of the counterweights on the inside rim by using the specifi c function (see

Indication of exact correction weight position ) which allows reading, on the monitor, the position used
for the measurement within the rim (For calibration, see Calibration).

The gauge can only be used with the counterweight pincers mounted.

4.4 - AUTOMATIC WIDTH GAUGE (Option)

Width gauging is through a SONAR device which measures the distance of the wheel without mechanical
contact, merely by closing the guard and each time a valid measurement has been made with gauge 4.3.

4.5 - COUNTERWEIGHT DISPENSER (Option)

The dispenser consists of a mechanism, controlled by the measuring instruments, designed to distribute
a counterweight equivalent to the measured weight, thus avoiding the approximations of commercial
counterweights. The counterweight is cut to the exact weight even if the approximate weight appears
on the displays. Accuracy of the weight is ± 1 gram. To dispense the counterweight, press relative
function push button for each side. The dispenser is operated pneumatically and uses the max. inlet
pressure which should be at least 7 kg/cm2 .

4.6 - AUTOMATIC WHEEL POSITIONING

At the end of the spin, the wheel is positioned according to the unbalance on the outside or else
according to the static unbalance (when selected).
Accuracy is ± 20 degrees.

4.7 - CLOCK CONTROL

The wheel balancer is provided with a clock having a back-up of about one month with the machine
switched off. If the machine remains off for a long period, at the fi rst switch on, check the date and time
(see Clock set-up), adjusting them if necessary.

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4.8 - KEYBOARD

FUNCTION KEYS: they immediately select corresponding function

Selection of special functions

Stops measuring cycle

Confi rm

N.B. - Press the buttons with the fi ngers only: never use the counterweight pincers or other

pointed objects.

- When the beep signal is enabled (see section ACUSTIC SIGNAL), pressing of any push

button is accompanied by a “beep”.

Starts measuring cycle

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5 - INDICATIONS AND USE OF THE WHEEL BALANCER

The monitor shows several information and suggests various alternative ways of use to the operator.
This is through various “screens”.

5.1 - INITIAL SCREEN

Buttons enabled

MENU'

: main functions screen (see MENU ACCESS DIAGRAM)

2

: type of correction (see ALU AND STATIC MODES)

START

: balancing spin (see RESULT OF MEASUREMENT )

Dimensions gauge: when extracted, the Dimensions screen is selected (see PRESETTING OF WHEEL

DIMENSIONS) .

If the machine remains on the initial screen for a certain amount of time without being used, the system
is automatically switched to a screen-save. Striking of any key, movement of the wheel of distance +

diameter gauge will cause automatic switching from the screen-save menu to the initial screen.

5.1.2 SCREEN-SAVE SCREEN

N.B. Name of the wheel balancer’s owner. Can be preset via the monitor (see Section ENABLING OF

ECCENTRICITY MEASUREMENT)

CEMB S.p.A.

Via Risorgimento 9

Mandello Lario - LC

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5.2 - MENU ACCESS DIAGRAM

N.B. - The symbol indicates the presence of a further menu.

- To return to the previous menu, press button

- To return to the initial screen, press button

MENU'

User control
(5.4)

Machine setup parameters

Language

B

User control

H

Unit of unbalance measurement

Unbalance display threshold

Unbalance display pitch

Spin with guard closing

Screen-saver time

Next

Cancel

Machine setup parameters

Visual eccentricity control

Acoustic Signal

Clock Setting

First harmonic limit

STOP

MENU'

A

PASSWORD : 1 +

C

For specialized personnel only

D

selections

Call user

Save user

Optimization

Dimensions

Statistic

Set-up

Special functions

Cancel

3

+ 5 + 7

Special functions

Width measurement

Adhesive weight dispenser

Eccentricity measurement

Customer’s personal

Users’ names

Calibration

Names Setup

Client Generalities

Names of Users

Cancel

Previous

Cancel

Calibrations

Distance

Diameter

Width

F

Cancel

E

Calibrations

Potentiometer

Adhesive weight dispenser

Eccentricity correction

Wheel balancer self-cali­bration

Wheel balancer self test

Cancel

G

Adhesive weight dispenser

Reference weight

n° of pulses in advance

Lenght of reference weight

Cancel Cancel

I 0201 GB - 10

Emission of reference weight

5.3 - PRESETTING OF WHEEL DIMENSIONS

5.3.1 AUTOMATIC PRESETTING

INDICATOR
L.T. function enabled
(see Buttons
Enabled)

The screen appears upon removing the distance + diameter gauge.
The indication “dimension acquired” is given by the symbol of the correction weight which changes from
blue to red.

- Standard wheels: Using the appropriate handgrip, move the end of the gauge against the rim in one
of the positions A/B shown in fi gure 8:

- Hold the gauge still in position for at least 2 seconds.

N.B. - Always use the round part of the gauge striker surface

Fig. 8

INDICATOR: Width
Sonar function enabled

POS A

POS B

The wheel width is measured by the Sonar upon closing the guard after a valid measurement of diameter
and rim distance (option). If the width measured is incorrect (out of range), the following message
appears:
“Sonar measure is out of range:”
“F1 = repeat”

“F2 = manual set-up”

When the acoustic signal is enabled (see
by a “beep”.
The so-obtained calibration is necessary for modes ALU 1, 2, 3, 4, CTS, Static, Dynamic.
Manual presetting is possible by using the buttons as described in MANUAL PRESETTING .

ACUSTIC SIGNAL), acquisition of the dimensions is accompanied

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- Wheel ALU-S (correction from the inside for two balancing planes with direct calibration):

After the measurement carried out for the inside FI as described in fi g. 9, pull out the gauge further to
memorize the data for the outside FE: select position A or B in fi gure 8 as required; keep this position
for at least 2 seconds.
The counterweight symbols change colour.
When the acoustic signal is enabled (see ACUSTIC SIGNAL ), the acquisition is accompanied by a
“beep”.

Fig. 9

The following buttons are enabled:

5

The button LT (LIGHT TRUCK) serves for improved dimensional calibration of large

size wheels such as off-the-road vehicles, trucks, or wheels which project by a large

amount from the rim.

Press button LT after the distance measurement and immediately upon lowering the

wheel guard for width measurement. The optional feature is automatically disabled

upon measuring another wheel.

6

7

START

Select the dimensions presetting in manual mode screen.

/

Return to initial screen.

STOP

Balancing spin

5.3.2 TO CALL MEMORIZED MEASUREMENTS

/

1

/

2

3

- when

- when 2 is pressed, the currently preset dimensions are saved.

4

/

Press the button with relative user’s name.

1

is pressed, the stored measurements will be called
(USER MEMORIZATION) while disregarding other measurements
made in the meantime.

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5.3.3 - MANUAL PRESETTING

If necessary, the dimensions can be inserted or edited in manual mode as follows:

+

4

or else press

6

from the Dimensions in automatic mode screen (which can be

to select the dimension to be preset (red).

3

/

to preset the required value.

to change unit of measurement.

to preset the dimensions for the ALU-S correction mode

- press

MENU'

reached by pulling out the distance + diameter gauge).

- press

- press

- press

- press

1

2

5

6

Defi nition of dimensions:
d = DIAMETER: Preset the nominal diameter stamped on the rim.
b = WIDTH: Preset the nominal width indicated on the rim.
a = DISTANCE: Preset the distance of the inside of the wheel from the machine, after measuring

it with relative gauge as described in fi g. 8.

Fig. 10

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- ALU S wheel

Likewise in the ALUS correction mode, the dimensions can be entered or changed manually by using the
buttons indicated on the screen and by following the diagram indicated by the graph.
To access the Manual ALUS dimensions presetting screen, press:

1) CUTTING SETTING TYPE OF CORRECTION = ALUS

MENU'

+

4

or

6

from the dimensions screen in automatic mode (can be reached by pulling out

the distance + diameter gauge)

2) CURRENT SETTING TYPE OF CORRECTION ≠ ALUS

MENU'

+

4

+

6

For a clearer understanding of the indications given by the graph, consult the following diagram:

Distance reading

- To return to the standard wheel dimensions presetting screen, press button

I 0201 GB - 14

6

.

5.3.4 - PRESETTING FOR LARGE-SCALE PRODUCTION

The machine can be used in production in the following two alternative ways:
1- Calibration with suitable wheel, as per the standard method. The machine is calibrated to the
dimensions of the wheel. On start-up or every change of production, the dimensions of the wheel in use
must be input (see Using the machine in Automatic Presetting)
2 - TCalibration on the wheel in use. This is useful when a rather long series of identical wheels is to
be balanced. Proceed as follows:

a) Switch off and restart the machine; the dimensions are preset by setup. Ignore these dimensions
and never modify them.
b) Perform a self calibration sequence with 3 spins (see Calibration of Wheel Balancer)
c) Use the machine as normal, bearing in mind that:

- on start-up, the machine is already calibrated for the wheel in use; no modifi cation or presetting
at start-up is therefore required.

- when changing the wheel in use, it is essential to repeat calibration.

5.4 - USER CONTROL

Save User

The wheel balancer can be used simultaneously by 4 different users who, through a simple sequence, can
memorize their work condition and call it when needed. The users’ names can be memorized (ENABLING

OF ECCENTRICITY MEASUREMENT).

5.4.1 - USER MEMORIZATION

- Preset the dimensions correctly according to the procedures already described in sections AUTOMATIC
PRESETTING and TO CALL MEMORIZED MEASUREMENTS .

- Press

- Press

MENU'

; the “MENU” window appears on the monitor.

2

; a window appears with the list of available USERS. The current user is displayed in red.

- Press the number corresponding to the required USER. The system returns to the initial screen

automatically.

5.4.2 - TO CALL USER

- Perform a measuring spin with any dimensions.

- Press button

- Press

MENU'

; the “MENU” window appears on the screen.

: a window appears with the list of available USERS. The current user is displayed

1

in red.

- Press the number corresponding to the required USER. The system automatically returns to the initial

screen with recalculation of the unbalance values on the basis of the effective dimensions of the USER
called.

- Alternatively, proceed as described in section TO CALL MEMORIZED MEASUREMENTS.

N.B. - The dimensions memorized as USER are lost when the machine is switched off.

- The USER control is also valid for the ALU-S dimensions.

- The current USER is always displayed in the Measurements and Dimensions screens.

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5.5 RESULT OF MEASUREMENT

After performing a balancing spin, the unbalance values are displayed as well as arrows useful for
positioning the point of application of the correction weight. After positioning the wheel, apply the weight
in the 12 o’clock position. When the beep signal is enabled (see section ACUSTIC SIGNAL), reaching of
the correction position is accompanied by a “beep”.
If the unbalance is less than the chosen threshold value, the “OK” appears instead of the unbalance value
to indicate, on that particular side, the wheel is in tolerance; the residual unbalance can be displayed by

pressing button

with an accuracy of 0.5 g (0.1 oz).

1

The following buttons are enabled:

Display of residual unbalance

1

2

Selection of correction mode (DYNAMIC, STATIC, ALU1, ALU2, ALU3, ALU4, CTS).

When the mode is changed, the unbalance values are recalculated automatically on the

basis of the previous spin (ALU AND STATIC MODES).

3

4

The weight to be applied on the inside is distributed by the dispenser.

Eccentricity measurement graph (option). The symbol above the key turns red is fi rst

harmonic eccentricity exceeds the limit indicated by the setup parameters (see

FIRST HARMONIC LIMIT).

5

6

The weight to be applied on the outside is distributed by the dispenser.

Split control for splitting of unbalance over presettable components (“SPLIT” CON

TROL). Button only enabled in STATIC or ALU S correction.

7

Indication of the longitudinal position of the unbalance (INDICATION OF EXACT COR

RECTION WEIGHT POSITION.) is enabled

MENU'

START

For selection of special functions

Balancing spin.

N.B. If the machine remains on this screen without being used for more than the time preset in the Setup
parameters (6), the screen automatically returns to the screen-save.

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5.5.1 - INDICATION OF EXACT CORRECTION WEIGHT POSITION

It is recommended to always use this function when correcting the unbalance through adhesive weights:
ALU S, STATIC, ALU 2, ALU 3.
In all cases this function allows cancelling approximations in the mounting of counterweights with
consequent reduction of the residual unbalance.

- Press button

- Pull out the rim distance+diameter gauge in position A, fi gure 8. Approach of the weight to the
correction position is indicated by a moving coloured arrow [ ].

- When a fi xed arrow [ ] is reached, rotate the wheel to correction position (FI or FE) and apply
the counterweight by turning the tip of the gauge towards the outside, into the position in which the
pincers touches the wheel. Compensation is made for the fact that the weight application position is
no longer at 12 o’clock (fi g. 11).

When the acoustic signal is enabled (see 6.8), the reaching of a fi xed arrow [ ] is accompanied
by a “beep”.

7

from the Measurements screen.

Fig. 11

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5.5.2 - “SPLIT” CONTROL

The SPLIT function is only possible in the case of static unbalance or ALU-S on the outside. It serves for
concealing any stick-on unbalance correction weights behind the rim spokes.

TO PRESET THE NUMBER OF RIM SPOKES

6

-From the STATIC or ALU-S measurement screen, press

- A window appears on the display indicating the currently preset number of spokes.

;

- Set the required number of spokes in the range 3 to 12 by pressing

1

and

2

- press to confi rm the presetting.

- Bring a spoke to the 12 o’clock position.

- press ; the Measurement Screen reappears with the unbalance values already split.
The ALU-S unbalance on the inside does not vary while as regards the STATIC unbalance and that
ALU-S on the outside:

- Gradually turn the wheel until an unbalance value appears.

- Apply an adhesive weight of the value indicated on the screen for the outside or STATIC, behind
the spoke in the 12 o’clock position.

- Again turn the wheel until a new unbalance value appears.

- Apply an adhesive weight of the value indicated on the screen for the outside or STATIC, behind
the spoke in the 12 o’clock position.

- Perform a spin to check for correct wheel balancing.

N.B. When SPLIT is enabled, the icon appears to the left of the screen.

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5.5.3 - UNBALANCE OPTIMIZATION

UNBALANCE OPTIMIZATION

- CAUTION!! The previous spin should have been performed
with the currently mounted wheel.

- Indicate the rim-adapter position with a reference mark
in order to remount the rim on the adapter in the same position.

- Remove the wheel from the wheel balancer.

- Turn the tyre on the rim by 180°.

- Remount the wheel on the wheel balancer positioning
the reference mark of the rim with that of the adapter.

- Close the guard and press the (START) push button.

The symbol is displayed automatically for static unbalance exceeding 30 grams (1.1 oz). The
program allows reducing the total unbalance of the wheel by compensating, when possible, the unbalance
of the tyre with that of the rim. It requires two spins with rotation of the tyre on the rim in the second spin.

Press

MENU'

+

3

after a fi rst spin and follow the instructions appearing on the monitor.

Cancel

5.5.4 - ALU AND STATIC MODES

From the Measurement screen, press button
Select the type required through the numeric keys. The return to the Measurement screen with the
recalculated values is automatic. A symbol always appears at the top of the screen indicating the enabled
weight application position.

Type of correction

STATIC

DINAMIC

2

: a window with the possible modes appears.

I 0201 GB- 19

STANDARD Balancing of steel or light alloy rims with application of

clip-on weights on the rim edges

STATIC The STATIC mode is necessary for motorcycle wheels or

when it is not possible to place the counterweights on
both sides of the rim.

ALU - 1 Balancing of light alloy rims with application of adhesive

weights on the rim shoulders.

ALU - 2 Balancing of alloy rims with hidden application of the

adhesive weight on the outside. The position of the out
side weight is on the adapter surface.

Support surface

piano d’appoggio

ALU - 3 Combined application: clip-on weight inside and hidden

adhesive weight on the outside (Mercedes). Outside
weight position is the same as ALU-2.

ALU - 4 Combined application: clip-on weight the outside and

hidden adhesive weight inside

CTS Special balancing with snap-in adhesive weights

between the edge of the tyre and rim, for both sides.

5.5.5 - TO CANCEL STATIC UNBALANCE

This function can be selected from the Setup screen. It serves for optimizing the residual unbalance by
correcting a wheel with standard counterweights in steps of 5 grams (1/4 oz.).
Thanks to this particular function, the position and best correction value are calculated in order to cancel

the static unbalance: the main cause of the vibrations which can be felt inside the car.

5.6 - STATISTICS

DAILY N° OF RUNS:

Indicates the number of runs performed as from switching on the machine. Such parameter is automati­cally reset after switching the machine off.

TOTAL N° OF RUNS:

Indicates the number of runs performed as from the last resetting of such counter. This parameter remains
memorized also when the machine is switched off.

The following push buttons are enabled:

6

: serves for resetting the daily number of

runs

7

: serves for resetting the total number of

runs.

Requires correct setting of a password.

STOP

: for returning to previous screen (MENU)

MENU'

: for returning to Measurement screen

I 0201 GB - 20

5.7 - DISPENSER

When the dispenser is enabled (see Section ENABLING OF THE DISPENSER), at the end of a spin,
it is possible to have adhesive counterweights of the exact weight measured by the machine (even if
displayed in steps of 5 grams or 1/4 oz).

For this purpose:

5

1. Press

2. Press

3. If the SPLIT function has been selected, it is also possible to dispense the adhesive weight for values
regarding the split on the two spokes: the dispenser distributes the adhesive weight according to the
positioned spoke. Distribution is disabled for weights less than 5 grams.

to have the adhesive weight for the outside.

3

to have the adhesive weight regarding the inside.

5.8 - WHEN AND WHY MATCHING

The C68 software associated with eccentricity measurement is a powerful tool for determining the need
to perform relative rotation between the rim and tyre in order to reduce the eccentricity of the wheel
down to acceptable limits. The principle adopted is based on the consideration that a rim with acceptable
tolerance, mounted with an acceptable tyre, can statistically generate a total eccentricity which is not
acceptable but can be improved by matching.

Generally speaking, rim measurement is not necessary, accurate or useful because:

· To measure the rim it is necessary to remove the tyre. There can by coarse errors on the outside

(e.g. aluminium wheels!)

· The two rim sides can be eccentric in a very different way. Therefore to which one to make reference?

What is the effect on the tyre mounted?

· To improve the eccentricity of a wheel, the rim should be eccentric, to compensate the tyre. And

viceversa.

· If after a rotation by 180° of a wheel, the value is still out-of-tolerance, either the tyre or rim are too

eccentric: One of the two must be replaced!

Ideal wheel

rotation axle

SOLUTION:

Rotate the tyre on the rim by 180°

wheel

Example 1

rim

Rim + 0.8 mm

Tyr e + 0.6 mm

tyre

Wheel + 1.3 mm

Eccentricity of the wheel is exces-

sive, due to an acceptable rim or

type but randomly placed in an
“unfortunate” relative position”.

RESULT:
wheel eccentricity 0.3 - 0.4 mm (in tolerance)

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wheel

Example 2

Ideal wheel

rotation axle

Ideal wheel

wheel

rim

rim

tyre

Rim + 0.8 mm

Tyr e - 0.6 mm

Wheel + 0.3 mm

Eccentricity of the single items

has been compensated.

The wheel is acceptable.

Example 3

Rim 0 mm

tyre

Eccentricity of the wheel cannot
be compensated by the rotation

rotation axle

SOLUTION:

Rotate the tyre on the rim by 180°

5.8.1 - PRESETTING OF TOLERANCE ON THE MACHINE

There is no general rule concerning acceptability of an eccentricity value . As a fi rst approximation we
consider it correct to use a threshold of 1 to 1.5 mm. The E/ECE/324 standard prescribes 1.5 mm as
max. eccentricity of a rebuilt tyre.

5.8.2 - VALUE OF STATIC UNBALANCE, CORRELATED WITH ECCENTRICITY

Clear indication is given in the Measurement screen of both the value and position of the static unbalance
as well as the eccentricity. In fact, it is interesting to check the correlations of the two values, above all of
the two positions. When the two positions have a similar angle (± 30° one from the other), there is a clear

sign that an eccentricity is present which can be compensated by matching.

RESULT:

no improvement is obtained

Tyr e + 1.2 mm

Wheel + 1,2 mm

because the rim is perfect!

5.8.3 - VALUE OF UNBALANCE CORRESPONDING TO ECCENTRICITY

Fur user’s reference, the centrifugal force is calculated corresponding to a certain speed, compared to
the force generated by the eccentricity present on the tyre (calculated with an approximate average
elastic constant).

I 0201 GB - 22

5.9 - ECCENTRICITY MEASUREMENT (OPTIONAL)

The much enlarged fi gures show the outer tyre surface and axis of wheel rotation.

Fig. A shows measurement of the total Peak-to-Peak eccentricity defi ned as maximum radial deviation
of the tyre surface.

Fig. A Fig. B
Fig. B shows measurement of the eccentricity
of the 1st harmonic, i.e. the eccentricity of that
circle which “recopies” the tyre shape, by avera­ging the local deviations of the tyre from the
round shape.

Obviously the P.P. measurement is normally
greater than that of the 1st harmonic. Tyre
manufacturers normally supply two different
tolerances for the two eccentricities.

At the end of the balancing spin it is possible to automatically measure the eccentricity of the tyre
through the SONAR sensor installed on the guard. The sensor should be positioned by hand in front
of the tyre tread.

GRAPH 1 - (yellow)

GRAPH 2 - (red)

GRAPH 1 : represents the actual Peak-to-Peak eccentricity.
GRAPH 2 : represents the eccentricity of the 1st harmonic. For a wheel in optimum conditions, such
graph should approach a straight line.

While rotating the wheel, the screen cursor indicates the current value, with the stage referred to the

6

eccentricity measurement sensor. Press pushbutton
tion about eccentricity is displayed, such as the imbalance effect which the fi rst eccentricity harmonic
measured may exert at an average speed of 120 km/h.

to access a panel where important informa-

I 0201 GB- 23

N.B.: If the fi rst harmonic value is higher than the limit indicated by setup parameters (see FIRST
HARMONIC LIMIT), at the end of the eccentricity measurement, the following window appears:

CAUTION

Visualisation excentri-

Eccentricity Display

cité

In this case, it is advisable to rotate the tyre on the rim by 180° in order to reduce the eccentricity
value measured.

For more detailed information, press pushbutton .

Before balancing the wheel, it is advisable to rotate the
tyre on the rim by 180° in order to educe the eccentricity
measured.
CAUTION! The current eccentricity of 1.0 mm gives rise
to a force more or less equivalent to that generated by an
imbalance of 33.2 gr at a speed of 120 km/hour.

I 0201 GB - 24

6 - SETUP

(see diagram showing access to the menus)
The Setup screen provides the user with many possibilities required for presetting the machine according
to his own requirements. Such settings remain unaltered even when the machine is switched off.

The following buttons are enabled:

STOP

: return to previous window

MENU'

: return to Measurement screen

from

1

to

7

: for selection of the parameter.

6.1 - LANGUAGE

This function allows selecting the language to be used for displaying descriptive and diagnostic messages
regarding machine operation.

6.2 - UNIT OF UNBALANCE MEASUREMENT

It is possible to select whether to display the unbalance values expressed in grams or ounces .

6.3 - UNBALANCE DISPLAY THRESHOLD

This consists of the unbalance threshold below which the wording “-OK-” appears on the screen at
the end of the spin instead of the unbalance; the presettable values vary according to the unit of
measurement selected.

6.4 - UNBALANCE DISPLAY PITCH

This represents the display pitch of the unbalance and varies according to the unit of measurement
selected. The selection “5 g” (1/4 oz) enables display of the correction values on both sides such as to
bring the static unbalance to 0 (theoretical). It is recommended to preset this function as standard use
of the machine as it improves the balancing quality. The computer makes a complex calculation which
allows cancelling the residual static unbalance by varying the value and position of the counterweights
fi xed in steps of 5 grams (1/4 oz).

6.5 - SPIN WITH GUARD CLOSED

When “ON” is selected the automatic start of the spin is enabled when the guard is closed.

6.6 - SCREEN-SAVER TIME

When the machine remains unused for longer than the time preset with this function, the processor
automatically returns to the Initial screen. Preset the time in seconds.

6.7 - VISUAL ECCENTRICITY CHECK

At the end of wheel acceleration, as soon as the motor is disengaged, the guard can be opened for visual
control of any wheel eccentricity as the rotation speed gradually drops.
Do not strike the wheel during the entire deceleration stage; to brake the wheel, close the guard. However,
avoid using the brake as far as possible because this may compromise unbalance measurements. The
unbalance values measured are only displayed when the wheel has come to a standstill.
This function is active for only one machine run.

6.8 - ACOUSTIC SIGNAL

When “ON” is selected. the sending of an acoustic signal (beep)) is enabled in the following cases:

- when any push button is pressed;

- when dimensions are acquired in automatic mode;

- when the correct angular position for weight application is reached in the Measurement screen;

- when the correct angular position for weight application is reached in the Position Repeater screen.

6.9 - TO SET THE CLOCK

Serves for correct setting of the date and time: follow the instructions on the screen.

6.10 - FIRST HARMONIC LIMIT

The fi rst harmonic limit beyond which it is felt suitable to rotate the tyre on the 180° rim. Recommended
Limit = 1.2 mm. If a 1st harmonic higher than the set limit is measured, a window appears on screen to
indicate the need to rotate the tyre of the rim.

I 0201 GB- 25

- CAUTION -

7 - SPECIAL CALIBRATIONS AND FUNCTIONS

(See MENU ACCESS DIAGRAM )

In order to gain access to the “Reserved Calibrations and functions” it is necessary to enter a password.
Any incorrect operation within the functions described below could impair the operation of the wheel
balancing machine. Unauthorized use will cause cancellation of the warranty on the machine.

7.1 - ENABLING OF WIDTH MEASUREMENT

This function enables/disables automatic width measurement with SONAR or contact device; always
select “SONAR”.

7.2 - ENABLING OF THE DISPENSER

This function enables/disables dispenser operation.

7.3 - ENABLING OF ECCENTRICITY MEASUREMENT

Enables/disables measurement of the tyre eccentricity during an unbalance measurement spin.

7.4 CONTROL OF SERIAL OUTPUT RS232C (OPTION)

This option enables/disables the sending of the measured unbalance and phase values to serial output
RS232C.

Transmission speed = 9600 baud
Data format = 7 bit Start
7 bit Data
1 bit Even parity
1 bit Stop

At the end of each unbalancing measuring spin, the balancing machine enables the RTS signal, then
places the "$" character on standby to be able to transmit the data; all functions remain on hold until data
transmission is enabled, at the end of which the RTS signal is reset to the inactive state.
The items of data transmitted via serial line are in ASCII format and are separated between each other
by the <cr> character (0x0d).

Sending sequence is as follows:

- 0000 <cr>

- Value of correction weight, left side <cr>

- Correction phase, left side <cr>

- Value of correction weight, right side <cr>

- Correction phase, right side <cr>

The fi rst 5 zero bytes represents the start of transmission message. The correction values are expressed
in grams, in steps of .1 gram.
The phase values are expressed in degrees, in the range 0% 359

See specifi c computer board on exploded drawings.

7.5 - DRAWER UNIT

Enables/disenables management of a drawer unit with unbalance correction weights

7.6-CALIBRATIONS

When

7.6.1- GAUGE CALIBRATION

Select the gauge to be calibrated and follow the instructions appearing on the monitor.

N.B.:

- In the diameter gauge calibration it is highly important to position the gauge correctly as shown in fi g.8.

- In the width gauge calibration it is necessary to enter two dimensions which can be measured as
follows:

is pressed from the Special Functions menu, access is gained to the Calibration menu.

6

I 0201 GB - 26

A - GAUGE “ZERO” DISTANCE
SONAR “ZERO” DISTANCE

B - DISTANCE FROM CALIBRATION POINT

Fig. 12

7.6.2 - DISPENSER CONSTANTS

7.6.2.1 - DISPENSER CALIBRATION

- Press

- Measure the length of the counterweight

: a reference counterweight is distributed.

6

Fig. 13

- Accurately weigh the counterweight obtained on a balance.

- With

- With

1

enter the exact weight obtained.

3

enter the length.

7.6.2.2 - NUMBER OF DISPENSER PULSES IN ADVANCE

Generally preset Ø.
If the weight distributed by the dispenser is always in excess, regulate the number of pulses so as to

reach the real weight.

7.6.3 - ADAPTER ECCENTRICITY CORRECTION

This function allows electronic compensation of the systematic balancing error due, for example, to an
eccentric adapter. It is not able to compensate for errors due to worn adapters or adapters with a certain
amount of play.
Never use this function unless advised by specialist personnel. Follow the instructions on the monitor.

When the Eccentricity Correction is enabled, the icon appears to the left of the screen.

7.6.4 - WHEEL BALANCER CALIBRATION

For calibration of the machine, proceed as follows:

- Use a medium-sized metal wheel. Example: 6" x 14" (± 1")

- Preset the wheel dimensions with GREAT CARE.

- Follow the instructions appearing on the monitor.

7.6.5 - TEST DRAWER UNIT

In the event that the drawer unit is enabled (see Drawer unit), start up in sequence all the LEDs on
the drawer unit.

7.6.6 - SELF-TEST BALANCING MACHINE

An automatic self-diagnostics cycle is provided for easier trouble shooting. At the end of the self­diagnostics cycle, several parameters are displayed which are useful for the Technical Service Department
in order to identify machine faults.

: returns to previous menu.

STOP

I 0201 GB- 27

7.6.6.1 - TO CHECK THE ENCODER

When the spindle is rotated:

- the angular position “POS” should vary from 0 to 128;

- the wording “UP” should appear when rotated clockwise and “DOWN” when rotated in the opposite
direction.

Encoder check

Check for correct oper­ation of the diameter
gauge; the number
increases when the
gauge is rotated out­wards

Check for correct
operation of the dis­tance gauge;
the number
increases when the

Check of the width sonar:
the number decreases
when a surface is
approached to the sonar

gauge is pulled out.

Check of the eccentricity sonar (option):
the number decreases when a surface is
approached to the sonar

In the event of failure or faulty operation of the wheel balancing machine, notify the Technical Service
of all the parameters displayed.

7.7 - SETUP NAMES

Special Functions

Width measurement

Adhesive Weight Dispenser

Eccentricity Measurement

Drawer unit

Calibrations

Names setup

Cancel

The machine can be customized by presetting:
a) The name appearing on the Initial screen (screen-save).
b) The name of 4 different machine users ( USER NAME).
An “ideal” keyboard appears on the monitor with the set of characters available for composition of the
wordings.
The Customer’s name consists of three lines, each max. 30 characters.
The USER NAME consists of a wording max. 15 characters.

I 0201 GB - 28

8 - ERRORS

ERROR MEANING

1 No rotation signal. Could be due to a faulty position transducer, or to the

motor failing to start, or to something preventing the wheel from turning.

2 During the measurement spins, wheel speed had dropped below 60
r.p.m. Check encoder functioning (see TO CHECK THE ENCODER )
and repeat the launch.

3 Error in the mathematical calculations, most probably caused by incorrect

carrying out of the self-calibration. Repeat the self-calibration. Wheel
unbalance too high.

4 Motor turning in opposite direction.

5 Guard open before start of spin.

7/8/9 Fault in the machine setup parameters.
Check for correctness of the basic setup parameters and repeat the

machine calibration. Contact Technical Service.

11 Speed too high for the measurement.

12/13/14 Overfl ow of counters used for the measurement. Check encoder functio

ning (see TO CHECK THE ENCODER). Contact Technical Service.

15/16/17/18 Contact Technical Service.

20 Wheel stopped before having positioned it.

21/22/23/24/25 Error in the weight dispenser control. Contact Technical Service.

30 Error in clock control on the screen.

40 ÷ 53 Error in control of eccentricity measurement graphs

54 ÷ 55 Sonar management error: Check operation (see Self-diagnostics)

60 ÷ 65 Drawer unit management error. Contact technical Service

I 0201 GB- 29

9 - ROUTINE MAINTENANCE

9.1 - SCHEDULED MAINTENANCE

Switch off the machine from the mains before carrying out any operation.
Grease lubricate the movable blade of the weight dispenser

9.2 - TO REPLACE THE FUSES

Remove the weight holder shelf to gain access to the power supply board where the 4 fuses are
located (see Exploded Drawings). If fuses require replacement, use ones of the same
current rating. If the fault persists, contact Technical Service.
Likewise there is one fuse on the dispenser power supply board.

9.3 - ADAPTER END PIECE, SPINDLE SE

Keep the internal felt ring constantly lubricated. (see exploded drawings)

NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE.

I 0201 GB - 30

10 - RECOMMENDED SPARE PARTS LIST

(For further details, see exploded drawings)

CODE DESCRIPION

181198630 Spring 19863P
080077007 Rigid belt Poly V - TB2 - 770 - 7 Vee’s
67M38954N Position pick-up board with cable
182245870 Spring, brake lever 24587P
182185750 Spring, rim distance gauge
86SB36752 Cable, automatic rim distance gauge
86SB36493 Cable, automatic diameter gauge
05PR36712 LEXAN panel
511242101 Two-pole switch 16A
67M37412A Power board with 4 relays
681002000 Fuses DM 5x20 - 2A
86SC51824 Computer board
962529610 24V power supply board
801100164 Monitor 15"
681006300 Fuses DM 5x20 - 6.3 A
86SB35179 Width sonar (standard protection)
86SB34144 Cable with microswitch protection (standard protection)

SPECIAL PARTS FOR 230V MACHINES

501054213 Single phase motor
86SZ44936 Complete power board
611000314 Braking transformer 30VA 230V
568001458 Capacitor 14MF 450 V FASTON screw M8
611000306 Dispenser power transformer 30VA 230 - 9/9
611035188 Power transformer 40VA

SPECIAL PARTS FOR 115V MACHINES

502054114 Single phase motor
86SZ44937 Complete power board
611000313 Braking transformer 30VA 115V
568002557 Capacitor 25MF 450V FASTON screw M8
611000301 Dispenser power transformer 30VA 115-9/9
611035187 Power transformer 40VA

SPECIAL PARTS FOR SPINDLE SE

020600703 Bearing 6007 - 2Z Ø 35/62x14
020600702 Bearing 6007 - LLB Ø 35/62 X 14 - (labyrinth seal)
18FP29329 Air spring 115 kg. stroke 75 mm.
16FB49504 Spool valve
18FB42639 Pneumatic pedal spring

DISPENSER PARTS

161027080 Air cylinder SCB Ø 27x80 - 30717P
160002405 Coil MB5 24V DC
165051024 Microvalve 1/8 305 - M1
547007040 Position pick-up OPB 704W
165000025 Illuminated anti-interference adapter
182198040 Spring
508000054 Geared motor Q54E 24V dc CEM
290200100 Roll of lead
020600203 Bearing 6002-2Z Ø 15/32/9

DRAWER UNIT

67M25930A Width LED card
791300016 PLC MATS. 81N/2

230V/50 - 60 Hz

115V/50 - 60Hz

I 0201 GB- 31

I 0201 GB - 32