Instructions for use
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 ........................................................................................................................................................4
3.1 - ANCHORING......................................................................................................................................................4
3.2 - ELECTRICAL CONNECTION ............................................................................................................................ 4
3.3 - ADAPTER MOUNTING ......................................................................................................................................5
3.4 - WHEEL GUARD ASSEMBLY AND ADJUSTMENT (OPTIONAL)......................................................................5
3.5 - SPACER WD......................................................................................................................................................5
4 - CONTROLS AND COMPONENTS ..............................................................................................................................5
4.1 - MANUAL RIM DISTANCE GAUGE ..................................................................................................................5
4.2 - CONTROL PANEL AND DISPLAY......................................................................................................................6
4.2.1 - OPERATION FUNCTIONS MENU ........................................................................................................7
5 - INDICATION AND USE OF THE WHEEL BALANCER ...............................................................................................8
5.1 - DOUBLE OPERATOR PROGRAM ....................................................................................................................8
5.2 - MANUAL PRESETTING OF WHEEL DIMENSIONS ......................................................................................8
5.2.1 - STANDARD WHEELS ..........................................................................................................................8
5.2.2 - SETTING WITH GAUGE EXTENSION ( OPTIONAL ) .........................................................................9
5.3 - RECALCULATION OF THE UNBALANCE .....................................................................................................10
5.4 - RESULT OF MEASUREMENT ........................................................................................................................10
5.4.1 - SPLIT FUNCTION (UNBALANCE SPREAD)......................................................................................11
5.4.2 - UNBALANCE OPTIMIZATION............................................................................................................12
5.4.3 - ALU AND STATIC MODES..................................................................................................................13
5.4.4 - AUTOMATIC MINIMISATION OF STATIC UNBALANCE....................................................................13
6 - SET UP ......................................................................................................................................................................14
6.1 - SELF-DIAGNOSTICS.......................................................................................................................................14
6.2 - SELF-CALIBRATION ...................................................................................................................................... 15
7 - ERRORS .....................................................................................................................................................................16
7.1 - INCONSISTENT UNBALANCE READINGS ..................................................................................................16
8 - ROUTINE MAINTENANCE..........................................................................................................................................17
8.1 - TO REPLACE THE FUSES ............................................................................................................................17
9 - RECOMMENDED SPARE PARTS LIST .....................................................................................................................17
I
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533
990
860
1- GENERAL
1.1 - GENERAL SAFETY RECOMMENDATIONS
- The wheel balancing machine should only be used by duly authorized and trained personnel.
- The wheel balancing machine should not be used for purposes other than those described in
the instruction manual.
- Under no way should the wheel balancing machine be modied except for those modications
made explicitly by CEMB.
- Never remove the safety devices. Any work on the machine should only be carried out by
specialist personnel.
- Avoid using strong jets of compressed air for cleaning.
- Use alcohol to clean plastic panels or shelves (AVOID LIQUIDS CONTAINING SOLVENTS).
- Before starting the wheel balancing cycle, make sure that the wheel is securely locked on the
adapter.
- The machine operator should avoid wearing clothes with apping edges. Make sure that
unauthorized personnel do not approach the machine during the work cycle.
- Avoid placing objects inside the base as they could impair the correct operation of the machine.
- Correct head disassembly (also see exploded drawings): the weight-holder head is anchored to
the bed on the front side with snap-tting clips; on the rear side, it is secured by a safety screw
accessed by removing the control panel.
1.1.1 - STANDARD SAFETY DEVICES
- Stop push button for stopping the wheel under emergency conditions.
- The wheel guard is not compulsory since the balancing speed is less than 100 min
-1.
1.2 - FIELD OF APPLICATION
The machine is designed for balancing wheels of car, light commercial vehicles or motorcycle, weighing less
than 65 Kg. It can be operated in the temperature range of 0° to + 45° C.
The following functions are provided: Double operator; ALU-S; SPLIT; Unbalance optimization; Self
diagnostics; Self-calibration
1.3 - OVERALL DIMENSIONS
Fig. 1
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1.4 - SPECIFICATION
Weight (excluding adapter) ~ 80Kg.
Single-phase power supply 115 / 230 V 50/60 Hz
Protection class IP 54
Max power consumption 800 W
Balancing speed < 100 min
Cycle time for average wheel (14 kg) 6-8 seconds
Max.resolution of measurement 1 gram
Position resolution ± 1.4 °
Average noise < 70dB (A)
Rim-machine distance 0 - 265 mm
Rim width setting range 1.5” ÷ 20” or 40 ÷ 510 mm
Diameter setting range 10” ÷ 26” or 265 ÷ 665 mm
-1
2 - HANDLING AND HOISTING
Fig. 2 Fig. 2a
NOTE: DO NOT HOIST THE MACHINE USING DIFFERENT GRIPS
(See “Correct head disassembly” - paragraph: GENERAL SAFETY REGULATIONS)
3 - COMMISSIONING
3.1 - ANCHORING
The machine can operate on any at non resilient oor.
Make sure that the machine rests solely on the three support points provided (g.2a).
3.2 - ELECTRICAL CONNECTION
The machine is supplied with a single phase mains cable plus earth (ground).
The supply voltage (and mains frequency) is given on the machine nameplate. It cannot be changed.
Connection to the mains should always be made by expert personnel.
The machine should not be started up without proper earthing.
Connection to the mains should be through a slow acting safety switch rated at 3 A (230V) or 8 A (115V).
See enclosed layout.
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A
B
Spring
DC
WD
Cone
3.3 - ADAPTER MOUNTING
The wheel balancing machine is supplied complete with
cone adapter for fastening wheels with central bore. Other
optional adapters can be mounted:
a) Remove threaded end piece A after backing off screw B.
b) Mount the new adapter (see enclosed brochures).
Note: CAREFULLY CLEAN THE COUPLING SURFACES
BEFORE PERFORMING ANY OPERATION.
Fig. 3
3.4 - WHEEL GUARD ASSEMBLY AND ADJUSTMENT (OPTIONAL)
a) Fasten the components to the base as illustrated in the specic exploded drawing.
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 the wheel
guard closed.
c) Check that the microswitch is held down when the guard is closed.
Note: Do not lean on the guard during the wheel balancing cycle.
3.5 - SPACER WD
When balancing very wide wheels (9”), there is not enough space to turn the distance gauge. To
withdraw the wheel from the machine side, 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, t the DC spacer
to obtain spring thrust.
Fig.3a
4 - CONTROLS AND COMPONENTS
4.1 - MANUAL RIM DISTANCE GAUGE
This gauge serves for manual measurement of the distance of the point of application of the counterweight from the machine.
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4.2 - CONTROL PANEL AND DISPLAY
Fig. 4
6
1 2
3
4
7
13
8 9 10 11 12
14
15
16
17
5
1-2 Digital readouts, AMOUNT OF UNBALANCE,
inside/outside
3-4 Digital readouts, POSITION OF UNBALANCE,
inside/outside
5 Indicators, correction mode selected
6 Indicators, selection made
7 Push button, unbalance reading < 5 g (25 oz)
8 Push button, operator selection
9 Correction mode selection pushbutton
10 Push button, SPLIT (unbalance resolution)
11 Push button, FUNCTIONS MENU
Note: - Press buttons only with your ngers. Never use the counterweight pincers or other pointed objects.
- When the beep signal is enabled (see FUNCTION MENU MANAGEMENT), pressing of any push
button is accompanied by a “Beep”.
12 Menu selection conrmation pushbutton
13 Push button, cycle start
14 Push button, emergency/home
15 Push buttons, manual DISTANCE setting
16 Push buttons, manual DIAMETER setting
17 Push buttons, manual WIDTH setting
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4.2.1 - OPERATION FUNCTIONS MENU
See optimization unbalance section
See SELF-DIAGNOSTICS chapter
See SELF-CALIBRATION chapter
diameter
mm/inch
mm/inch
width
guard
on/off
start from
guard closing
approx.
1-5g or .1-.25oz
on/off
acoustic
signal
g/oz unbalance
measurement
CONFIRM
CONFIRM
CONFIRM
CONFIRM
CONFIRM
CONFIRM
CONFIRM
unit
RETURN TO MEASUREMENT SCREEN
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5 - INDICATION AND USE OF THE WHEEL BALANCER
5.1 - DOUBLE OPERATOR PROGRAM
This program allows memorizing the dimensions of two types of wheels. Thus two operators can work
simultaneously on two different cars using the same balancing machine. The system memorizes two
programs with various preset dimensions.
1 - Press to select operator (1 or 2). Selection is conrmed by panel-mounted Led.
2 - Input the dimensions (see PRESETTING WHEEL DIMENSIONS )
3 - Press to perform balancing normally
With program 1 or 2 is called for subsequent balancing operations without having to newly enter
the dimensions.
5.2 MANUAL PRESETTING OF WHEEL DIMENSIONS
5.2.1 - Standard wheels
Fig. 5
readout
- Preset distance “a” for the inside of the wheel from the machine
- Set the rated width, which is generally indicated on the rim, or measure
width “b” using the compass gauge supplied..
- Preset the nominal diameter “d” indicated on the tyre.
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cm
- Wheel ALU-S
- Measure the dimensions as shown in the following diagram
Fig. 6
0 gauge
PRESETTING:
Note: when dE is not set, dE = 0.8 dI is automatic
5.2.2 - SETTING WITH GAUGE EXTENSION ( OPTIONAL )
Extension +6
Fig. A Fig. B
The extension increases the gauge distance measurement eld by 6 cm (Fig. A) and allows distance
measurement even when the rim has a special prole (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 + 6”
- Manually set the diameter and the width.
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5.3 - RECALCULATION OF THE UNBALANCE
Press after new setting of the measurement.
5.4 - RESULT OF MEASUREMENT
Fig. 7
Correction of inner side Correction of outer side
After performing a balancing spin, the amounts of unbalance are shown on the digital readouts.
Digital readouts with LED ‘s 3 - 4 lit up indicate the correct angular wheel position to mount the counterweights (12 o’clock position). If the audible alarm is enabled (see FUNCTION MENU MANAGEMENT ) the acquisition
of the correction position is conrmed by a “beep” alarm.
In the event of unbalance less than the selected threshold value
value , with
NOTE: In the event of wheels with diameter less than or equal to 13” and at temperature conditions near
0°, the wheel balancer automatically engages a special measuring cycle involving two successive
measurements. The precision of unbalance values and the reliability of the wheel balancer are
unaffected. This type of operation is reset every time the wheel balancer is started.
If at the end of any balancing run, the ashing symbol
until unbalances are displayed.
it is possible to read the values below the selected threshold gr. by gr.
, is displayed in place of the unbalance
appears, manually turn the wheel
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15
30
15
15
30
30
15
30
5.4.1 - SPLIT FUNCTION (unbalance spread)
The SPLIT function is used to position the adhesive weights behind the wheel spokes so that they are
no longer visible. It is advisable to use this function only in the event of static unbalance or in the
ALU S function. Input the wheel dimensions and start the spin. To start the SPLIT function, input the
following data:
Display example prior to
SPLIT function
Input the number of spokes ( 3 ÷ 12 )
- Move any spoke to the 12 o’clock position
- Place the rst Split unbalance in correction position 1
- Correction position 1
- Place the second Split unbalance in correction position 2
- Correction position 2
To return to normal unbalance display, press the button
To perform a new spin, subsequently press the button
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5.4.2 - UNBALANCE 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 exceeding 30g.
- It improves the residual eccentricity of the tyre.
- Mark with chalk a reference point on the adapter and rim
- With the aid of a tyre remover, turn the rim on the tyre by 180°
- Ret the wheel with the reference mark coinciding between rim and
adapter
- RH display: percentage reduction
- LH display: actual static unbalance which can be reduced by rotation
TYRE
POSITION
RIM POSITION
- Mark the two positions of the rim and tyre, and turn the rim on the
tyre until the positions correspond in order to obtain the optimization
on the display
RETURN TO START OF OPTIMIZATION
RETURN TO MEASUREMENT SCREEN
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12/13 mm
piano appoggio
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5.4.3 - ALU AND STATIC MODES
From the measurement screen, press button to select the type required. The 5-LED displays
show the position where to apply the weights. If a spin has already been performed, the processor
automatically recalculates, for each change of mode, the amounts of unbalance according to the new
calculation.
Fig. 8
DYNAMIC 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 light alloy rims with hidden application of the
outer adhesive weights.
Outer weight position is xed.
support surface
ALU - 3 Combined application: clip-on weight inside and hidden adhe-
sive weight on outside (Mercedes). Outer weight position is the
same as ALU-2.
ALU - 4 Combined application: adhesive weight outside and clip-on
weight inside.
5.4.4 - AUTOMATIC MINIMISATION OF STATIC UNBALANCE
Initial unbalance
Phase shift
Possible approximations
static residual
static residual
static residual
static residual
With conventional
wheel balancer
Choice with minimum
static residual
This program is designed to improve the quality of balancing without any mental effort or loss of time by
the operator. In fact by using the normal commercially available weights, with pitch of 5 in every 5 g,
and by applying the two counterweights which a conventional wheel balancer rounds to the nearest value,
there could be a residual static unbalance of up to 4 g. The damage of such approximation is emphasized
by the fact that static unbalance is cause of most of disturbances on the vehicle. This new function
automatically indicates the optimum entity of the weights to be applied by approximating them in an
“intelligent” way according to their position in order to minimize residual static unbalance.
6.1 - SELF-DIAGNOSTICS
- All displays, readouts and Led’s should light up in sequence
- Turn the wheel in direction of rotation.
- Turn the wheel in reverse direction of rotation.
- In one complete wheel revolution (in direction of rotation), this should appear once:
6 - SET UP
DISPLAY TEST
- Press
- Test parameter
END OF SELF-DIAGNOSTICS
CANCEL SELF-DIAGNOSTICS IN
ANY PHASE
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6.2 - SELF-CALIBRATION
For machine self-calibration proceed as follows :
- Fit a wheel with steel rim of average dimensions on the shaft. Example 6” x 14” (± 1”)
- Preset the exact dimensions of the wheel mounted.
CAUTION !! Presetting of incorrect dimensions would mean that the machine is not correctly calibrated,
therefore all subsequent measurements will be incorrect until a new self-calibration is
performed with the correct dimensions!!
- Perform a spin under normal conditions.
- Add 100 g. (3.5 oz) on the outside in any angular position.
- Shift the 100 g.weight from the outside to the inside keeping the same
angular position.
- Rotate the wheel so to have the 100 g. weight to the 12 o’clock position.
END OF SELF-CALIBRATION
CANCEL SELF-CALIBRATION IN ANY PHASE
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7 - ERRORS
During machine operation, various causes of faulty operation could occur. If detected by the
microprocessor, they appear on the display as follows:
ERROR MEANING
1 No rotation signal. Could be caused by faulty position transducer, or something
preventing the wheel from turning.
2 During the measurement spins, wheel speed had dropped below 60 r.p.m. Verify
encoder function (see SELF-DIAGNOSTICS) and repeat the spin.
3 Unbalance too high.
4 Rotation in opposite direction.
5 Guard open before start of spin.
7 Fault in reading the machine calibration parameters. Repeat the self-calibration.
8 Fault in writing the machine calibration parameters. Repeat the self-calibration.
9 General fault in memory of the machine calibration parameters. Contact Technical
Service Department.
11 Speed too high during unbalance measurement spins.
12/13/14 Difculty in reading the analogue signal. Verify encoder function (see SELF-
DIAGNOSTICS). Contact Technical Service Department.
15/17 Inside/outside analogue signal too high. Contact Technical Service Department.
16/18 Inside/outside analogue signal too low. Contact technical service department.
Perform a manual wheel spin until the unbalance is displayed.
7.1 - INCONSISTENT UNBALANCE READINGS
Sometimes after balancing a wheel and removing it from the balancing machine, it is found that, upon
mounting it on the machine again, the wheel is not balanced.
This does not depend on incorrect indication of the machine, but only on faulty mounting of the wheel
on the adapter, i.e. in the two mountings the wheel has assumed a different position with respect to the
balancing machine shaft centre line. If the wheel has been mounted on the adapter with screws, it could
be possible that the screws have not been correctly tightened, i.e. crosswise one by one, or else (as often
occurs) holes have been drilled on the wheel with too wide tolerances.
Small errors, up to 10 grams (0.4 oz) are to be considered normal in wheels locked by a cone; the error is
normally greater for wheels fastened with screws or studs.
If, after balancing, the wheel is still unbalanced when retted, this could be due to the unbalance of the
brake drum or very often due to the holes for the screws on the rim and drum sometimes drilled with too
wide tolerances. In such case a readjustment could be advisable using the balancing machine with the
wheel mounted. (For example, our L36, L38/2 models).
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8 - ROUTINE MAINTENANCE
Switch off the machine from the mains before carrying out any operation.
8.1 - TO REPLACE THE FUSES
Remove the weight holder shelf to gain access to the power supply board where the fuses are located
(see exploded drawings) . If fuses require replacement, use ones of the same current rating.
If the fault persists, contact Technical Service.
NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE.
9 - RECOMMENDED SPARE PARTS LIST
(For references, see exploded drawings)
CODE DESCRIPTION
020600503 Bearing 6005 - 2Z Ø 25/47/12
181198630 Spring 19863P
080077004 Rigid belt Poly V - TB2 - 770 - 4 crested
67M38954H Position pick-up board with cable
05PR36154 LEXAN Panel
181206560 Distance gauge spring
67M36950A Power board
681002000 Fuses DM5x20 - 2A
511242101 Bipolar platform switch (oscillating)
86SC40721 Computer board
SPECIAL PARTS FOR 230 V MACHINE
50FG54366 Single phase motor 230V/50-60 Hz - 0.12Kw HB63B-4
86SZ46810 Complete power board
611000314 Braking transformer 30 VA 230 - 0/50
568001058 Capacitor 10MF 450V Faston screw M8
611000308 Power transformer 30 VA 230 - 9/9
SPECIAL PARTS FOR 115V MACHINE
50FG54283 Single phase motor 115V/50-60 Hz - 0.12Kw HB63B-4
86SZ46811 Complete power board
611000313 Braking transformer 30 VA 0/115 - 0/30
568003558 Capacitor 35MF 450V FASTON screw M8
611000307 Power transformer 30 VA 115 - 9/9
SPECIFIC SPARE PARTS - CSA STANDARDS
50FG42403 Single phase motor BIMA 56/B14Kw0.11-4p CSA 115V/50-60Hz
67M36950C Power board ( CSA )
681002001 Fuses DM5x20 - 2A type GMA ( CSA )
568003540 Electrical capacitor 35MF 250V MLR25U CSA M8 screw
611000301 Power supply transformer ( CSA )
611000310 Braking transformer ( CSA )
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