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I_0316_M200S(B) finished.indd - Hofmann Megaplan

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Instructions for use<br />

I<br />

INDEX<br />

Page<br />

1 - GENERAL .....................................................................................................................................................................3<br />

1.1 - GENERAL SAFETY REGULATIONS ...............................................................................................................3<br />

1.1.1 - STANDARD SAFETY DEVICES ....................................................................................................................3<br />

1.2 - FIELD OF APPLICATION .................................................................................................................................3<br />

1.3 - OVERALL DIMENSIONS (standard protection) ................................................................................................3<br />

1.4 - TECHNICAL DATA ...........................................................................................................................................4<br />

2 - HANDLING , HOISTING .............................................................................................................................................4<br />

3 - START-UP ....................................................................................................................................................................4<br />

3.1 - ANCHORING ....................................................................................................................................................4<br />

3.2 - ELECTRICAL CONNECTION ..........................................................................................................................4<br />

3.3 - ADAPTER MOUNTING ....................................................................................................................................5<br />

3.4 - WHEEL GUARD ASSEMBLY AND ADJUSTMENT (Exploded views) .............................................................5<br />

4 - CONTROLS AND COMPONENTS ...............................................................................................................................5<br />

4.1 - AUTOMATIC DISTANCE MEASURING GAUGE .............................................................................................5<br />

4.2 - CONTROL PANEL AND DISPLAY ...................................................................................................................6<br />

4.2.1 OPERATION FUNCTIONS MENU ....................................................................................................................7<br />

5 - INDICATION AND USE OF THE WHEEL BALANCER ..............................................................................................8<br />

5.1 - USE OF THE GAUGE INSTALLED IN THE MACHINE ....................................................................................8<br />

5.2 - AUTO SELECT ..................................................................................................................................................8<br />

5.2.1 - AUTO SELECT FOR STEEL RIMS .................................................................................................................8<br />

5.2.2 - AUTO SELECT FOR ALU M RIMS .................................................................................................................9<br />

5.3 - ALU 3M RIMS .................................................................................................................................................10<br />

5.4 - PAX RIMS .........................................................................................................................................................11<br />

5.5 - ALU 1 AND ALU 4 RIMS .................................................................................................................................12<br />

5.6 - RESULT OF MEASUREMENT .......................................................................................................................13<br />

5.7 - DOUBLE OPERATOR PROGRAM ..................................................................................................................13<br />

5.8 - SPLIT FUNCTION .........................................................................................................................................14<br />

5.9 - UNBALANCE OPTIMIZATION ........................................................................................................................15<br />

5.10 - ALU AND STATIC MODES.............................................................................................................................16<br />

5.11 - MINISTAT - AUTOMATIC MINIMIZATION OF STATIC UNBALANCE............................................................17<br />

6 - SET UP ..............................................................................................................................................................18<br />

6.1 - SELF-DIAGNOSTICS .....................................................................................................................................18<br />

6.2 - SELF-CALIBRATION ......................................................................................................................................19<br />

7 - ERRORS ....................................................................................................................................................................20<br />

7.1 - INCONSISTENT UNBALANCE READINGS ..................................................................................................21<br />

8 - ROUTINE MAINTENANCE .......................................................................................................................................22<br />

8.1 - TO REPLACE THE FUSES ............................................................................................................................22<br />

9 - RECOMMENDED SPARE PARTS LIST ...................................................................................................................22<br />

I <strong>0316</strong> GB - 1


I <strong>0316</strong> GB - 2


1 - GENERAL<br />

1.1 - GENERAL SAFETY REGULATIONS<br />

- The machine should only be used by authorized and suitably trained personnel.<br />

- Do not use the machine for purposes other than those specified in this manual.<br />

- The machine should not be modified in any way except for those modifications explicitly carried out by<br />

the manufacturer.<br />

- Never remove the safety devices. Any work on the machine should only be carried out by speciali<br />

personnel.<br />

- Avoid using strong jets of compressed air for cleaning.<br />

- Use alcohol to clean the plastic panel or shelves (AVOID LIQUIDS CONTAINING SOLVENTS).<br />

- Before starting the wheel balancing cycle, make sure that the wheel is securely locked on the adapter.<br />

- The machine operator should avoid wearing clothes with flapping edges.<br />

- Make sure that unauthorized personnel do not approach the machine during the work cycle.<br />

- Avoid placing objects inside the base as they could impair the correct operation of the machine.<br />

1.1.1 - STANDARD SAFETY DEVICES<br />

- Stop key that stops the motor when an emergency arises.<br />

- Highly shock resistant plastic guard whose shape and size are designed to avoid the danger of<br />

counterweights spinning off in any direction except downwards. (option)<br />

- A microswitch will not let the machine start up if the guard is not down and stops the motor whenever the<br />

guard is raised.<br />

1.2 - FIELD OF APPLICATION<br />

The machine is designed for balancing wheels of cars , light commercial vehicles or motorcycles,<br />

weighing less than 70 Kg. It can be operated in a temperature range of 0° to +45°C.<br />

The following functions are provided: ; AUTO SELECT; ALU-M; ALU 3M; PAX; SPLIT; Unbalance optimization;<br />

Double operator; Self diagnostics; Self calibration.<br />

1.3 - OVERALL DIMENSIONS (standard protection)<br />

1384<br />

1174<br />

1162<br />

1645<br />

I <strong>0316</strong> GB - 3


1.4 - TECHNICAL DATA<br />

Weight with guard (excluding adapter) ................................... ~ 84 Kg.<br />

Single-phase power supply ..................................................... 115 / 230 V 50/60 Hz<br />

Protection class.......................................................................IP 54<br />

Max.power consumption .........................................................0,8 KW<br />

Balancing speed...................................................................... 100 min-1<br />

Cycle time for average wheel (14 kg)...................................... 6-8 seconds<br />

Max.resolution of measurement .............................................. 1 gram<br />

Position resolution ................................................................... ± 1.4 °<br />

Average noise.......................................................................... < 70dB (A)<br />

Rim-machine distance............................................................. 0 - 250 (310 mm)<br />

Rim width setting range........................................................... 1.5” ÷ 20” or 40 ÷ 510 mm<br />

Diameter setting range ............................................................ 10” ÷ 26” or 265 ÷ 665 mm<br />

Total wheel diameter inside standard guard ........................... 870 mm<br />

Total wheel width inside standard guard ................................. 430 mm<br />

2 - HANDLING, HOISTING<br />

NOTE: NEVER USE OTHER POINTS TO HOIST THE MACHINE<br />

3 - START - UP<br />

3.1 - ANCHORING<br />

The machine can only be operated on a flat non resilient floor. Make sure that the machine rests on the 3<br />

mounting points provided (see above) N.B.: It is advisable to secure the system to the ground using the<br />

specific feet (see above) in the event of continual use with wheels weighing over 35 Kg.<br />

3.2 - ELECTRICAL CONNECTION<br />

The machine is supplied with an electrical cable plus earth (ground).<br />

The supply voltage (and mains frequency) is given on the machine nameplate. It cannot be changed.<br />

Connection to mains should always be made by expert personnel.<br />

The machine should not be started up without proper earthing.<br />

Connection to the mains should be through a slow acting safety swich rated at 3 A (230V) or 8 A (115V).<br />

I <strong>0316</strong> GB - 4


3.3 - ADAPTER MOUNTING<br />

The wheel balancer is supplied complete with cone<br />

type adapter for fastening wheels with central bore.<br />

Other optional adapters can be mounted:<br />

a) Remove threaded end piece A after backing off<br />

screw B.<br />

b) Mount the new adapter (see enclosed brochures).<br />

3.4 - WHEEL GUARD ASSEMBLY AND ADJUSTMENT (Exploded views)<br />

a) Insert the wheel guard tube in its seat.<br />

b) Fit the mounting bolts and tighten them securely.<br />

The guard closed position can be adjusted by means of relative screw accessible from the rear of the<br />

machine. Adjust the angular position of microswitch control.<br />

Correct position is the one which keeps the tube exactly horizontal with the wheel guard closed.<br />

4 - CONTROLS AND COMPONENTS<br />

4.1 - AUTOMATIC DISTANCE MEASURING GAUGE<br />

Allows measuring the distance of the point of application of the counterweight from the machine.<br />

I <strong>0316</strong> GB - 5


4.2 - CONTROL PANEL AND DISPLAY<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

1-2 Digital readouts, AMOUNT OF UNBALANCE, inside/outside<br />

3-4 Digital readouts, POSITION OF UNBALANCE, inside/outside<br />

5 Indicators, correction mode selected<br />

6 Indicators, selection made<br />

7 Push button, unbalance reading < 5 g (25 oz)<br />

8 Push button, operator selection<br />

9 Push button, selection of mode of correction<br />

10 Push button, SPLIT (unbalance spread)<br />

11 Push button, FUNCTIONS MENU<br />

12 Push button, menu selection confirmation<br />

13 Push button, cycle start<br />

14 Push button, emergency/home<br />

15 Push button AUTO SELECT<br />

16 Push buttons, manual DIAMETER setting<br />

17 Push buttons, manual WIDTH setting<br />

18 Push button, unbalance optimization<br />

Note:<br />

- Only use the fingers to press the push buttons. Never use the counterweight pincers or<br />

other pointed objects.<br />

- In case of audible alarm connected (see par. OPERATION FUNCTIONS MENU), any push button<br />

operation sounds with a “beep” alarm.<br />

I <strong>0316</strong> GB - 6


4.2.1 - OPERATION FUNCTIONS MENU<br />

MENU'<br />

ENTER<br />

on/off audible<br />

alarm<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

diameter<br />

mm/inch<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

width<br />

mm/inch<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

guard<br />

on/of<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

start from<br />

guard closing<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

approximates<br />

1-5g 0.1-25oz<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

ENTER<br />

See SELF-DIAGNOSTICS<br />

ENTER<br />

See SELF-CALIBRATION<br />

ENTER<br />

g/oz<br />

unbalance<br />

unit<br />

ENTER<br />

CONFIRM<br />

ENTER<br />

DISTANCE automatic gauge calibration<br />

HOME<br />

STOP<br />

RETURN TO MEASUREMENT SCREEN<br />

I <strong>0316</strong> GB - 7


5 - INDICATION AND USE OF THE WHEEL BALANCER<br />

5.1 - USE OF THE GAUGE INSTALLED IN THE MACHINE<br />

For clip-on weights use the gauge in the upper position A.<br />

For adhesive weights use the gauge either in the upper<br />

position A or the lower position<br />

B. It is recomended to use Position B. As here one can see<br />

where the adhesive weights will be placed.<br />

POS A.<br />

Note: Always use the round part of the striker plate.<br />

POS B.<br />

5.2 - AUTO SELECT<br />

The machine automatically detects the right balancing program for steel and ALU M rims.<br />

5.2.1 - AUTO SELECT FOR STEEL RIMS<br />

Pull out the gauge to the edge of the rim. Keep it<br />

there until you hear a beep<br />

Push back the gauge to the resting position. The machine automatically has detected the mode for<br />

steel rims.<br />

Set the diameter indicated on the rim.<br />

Set the width indicated on the rim, or measure the<br />

width with the calliper (standard accessory).<br />

Make a measuring spin, turn the wheel to the right angles, fix the clip-on weights, and make a control<br />

spin.<br />

To balance more tyres of the same type and dimension the machine automatically stores the current<br />

wheel data.<br />

I <strong>0316</strong> GB - 8


5.2.2 - AUTO SELECT FOR ALU M RIMS<br />

FI<br />

FE<br />

Pull out the gauge to the left plane, where<br />

you want to fix an adhesive weight. Keep the<br />

gauge there until you hear a beep. Pull it<br />

further out to the right plane and wait for the<br />

second beep.<br />

The machine automatically has detected the<br />

ALU M mode.<br />

Push back the gauge to the resting position.<br />

Set the diameter indicated on the<br />

rim.<br />

Make a measuring spin<br />

For the adhesive weight on the left position turn the wheel to the correct angle and simply fix the weight<br />

by hand at the 12 o' clock position or use the gauge for repositioning as described below.<br />

For the adhesive weight on the right position turn the wheel to the correct angle.<br />

Pull out the gauge for repositioning and re-adjust the angle.<br />

Move the gauge further to the right<br />

until you hear a beep.<br />

Move the gauge further to the left until<br />

you hear a beep.<br />

Make a control spin<br />

To balance more tyres of the same type and dimension the machine automatically<br />

stores the current wheel data.<br />

To put in other dimensions or to change the balancing program press<br />

I <strong>0316</strong> GB - 9


5.3 - ALU 3M RIMS<br />

Press<br />

until the correct weight<br />

positions are indicated.<br />

To indicate the free choice of the position planes the ALU M LED is also lighting up at the same time.<br />

FI<br />

FE<br />

Pull out the gauge to the edge of the rim,<br />

where you want to fix the clip-on weight.<br />

Keep the gauge there until<br />

you hear a beep. Pull it further out to the<br />

right plane, where you want to fix the<br />

adhesive weight. Wait for the second beep.<br />

The machine confirms with ALU 3M<br />

Push back the gauge to the resting position.<br />

Set the diameter indicated on<br />

the rim.<br />

Make a measuring spin<br />

For the clip-on weight on the left position turn the wheel to the correct angle (see RESULT OF<br />

MEASUREMENT) and simply fix the weight by hand at the 12 o' clock position or use the gauge for<br />

repositioning as described below.<br />

For the adhesive weight on the right position turn the wheel to the correct angle.<br />

Pull out the gauge for repositioning and re-adjust the angle.<br />

Move the gauge further to the right<br />

until you hear a beep.<br />

Move the gauge further to the left until<br />

you hear a beep.<br />

Make a control spin<br />

To balance more tyres of the same type and dimension the machine automatically stores the current<br />

wheel data.<br />

To put in other dimensions or to change the balancing program press<br />

I <strong>0316</strong> GB - 10


5.4 - PAX RIMS<br />

Press<br />

FI<br />

FE<br />

Pull out the gauge to the left plane, where<br />

you want to fix an adhesive weight. Keep the<br />

gauge there until you hear a beep. Pull it<br />

further out to the right plane and wait for the<br />

second beep.<br />

The machine confirms with PAX<br />

Push back the gauge to the resting position.<br />

Set the diameter indicated on the rim in<br />

mm.<br />

Make a measuring spin<br />

For the adhesive weight on the left position turn the wheel to the correct angle (see RESULT OF<br />

MEASUREMENT) and simply fix the weight by hand at the 12 o' clock position or use the gauge for<br />

repositioning as described below.<br />

For the adhesive weight on the right position turn the wheel to the correct angle.<br />

Pull out the gauge for repositioning and re-adjust the angle.<br />

Move the gauge further to the right<br />

until you hear a beep.<br />

Move the gauge further to the left until<br />

you hear a beep.<br />

Make a control spin<br />

To balance more tyres of the same type and dimension the machine automatically stores the current<br />

wheel data.<br />

To put in other dimensions or to change the balancing program press<br />

I <strong>0316</strong> GB - 11


5.5 - ALU 1 AND ALU 2 RIMS<br />

Put in the wheel data as for steel rims described in AUTO SELECT FOR STEEL RIMS.<br />

Make the measuring spin.<br />

Press<br />

ALU<br />

as often as the LEDs for ALU 1 or ALU 2 are lighting up.<br />

Fix the weights at the indicated positions.<br />

Make a control spin.<br />

To balance more tyres of the same type and dimension the machine automatically stores the current<br />

wheel data.<br />

Note for ALU M/PAX programs:<br />

For the outer/right diameter the machine automatically calculates 80% of the value of the inner/left<br />

diameter.<br />

Note for ALU 3M programs:<br />

For the outer/right diameter the machine automatically calculates - 2" of the value of the inner/left<br />

diameter.<br />

For very special shaped rims you can adjust the right diameter as follows:<br />

Press one of the widths buttons for 3<br />

seconds.<br />

Adjust the right diameter to the shape<br />

of the rim.<br />

I <strong>0316</strong> GB - 12


5.6 - RESULT OF MEASUREMENT<br />

Inside correction<br />

Outside correction<br />

After performing a balancing spin, the amounts of unbalance are shown on the digital readouts.<br />

Digital readouts with LED ‘s 3 - 4 lit up indicate the correct angular wheel position to mount the counterweights<br />

(12 o’clock position). In case of audible alarm activated (see par. OPERATION FUNCTIONS MENU), the<br />

correction position will sound with a “beep” alarm. If the unbalance is less than the threshold selected, 0 is<br />

displayed instead of the unbalance; with FINE it is possible to read the values below the threshold chosen<br />

gram by gram.<br />

To enable automatic distance acquisition for a new wheel to be balanced, press<br />

N.B.:<br />

For wheel diameters less than or equal to 13” and at temperatures around 0°C, the wheel<br />

balancer automatically initiates a special measurement cycle involving two consecutive<br />

measurements. The precision of unbalance values and the reliability of the wheel balancer are<br />

unaffected. This type of operation is reset every time the wheel balancer is switched on.<br />

If the mobile symbol<br />

should appear at the end of any balancing start operation, turn<br />

the wheel by hand until the unbalance values are displayed.<br />

5.7 - DOUBLE OPERATOR PROGRAM<br />

This program allows memorizing the dimensions of two types of wheels. Thus two operators can work<br />

simultaneously on two differents cars using the same balancing machine. The system memorizes two<br />

programs with various preset dimensions.<br />

1 - Press USER to select operator (1 or 2). Selection is confirmed by panel-mounted Led.<br />

2 - Enter the dimensions (see AUTO SELECT ).<br />

3 - Press START to carry out the balancing as usual and to store the program.<br />

With<br />

USER<br />

program 1 or 2 is called for subsequent balancing operations without having to newly<br />

enter the dimensions.<br />

I <strong>0316</strong> GB - 13


5.8 - SPLIT FUNCTION (unbalance spread)<br />

The SPLIT function is used to position the adhesive weights behind the wheel spokes so that they are no<br />

longer visible. It is advisable to utilise this function only in the event of static unbalance or with<br />

ALU-M, ALU-3M or PAX functions. Input the wheel dimensions and start the spin. To start the SPLIT<br />

function, input the following data:<br />

Display example prior to<br />

SPLIT function<br />

Input the number of spokes (3-12)<br />

- Place any spoke in the vertical position.<br />

<br />

<br />

- Place the first Split unbalance in correction<br />

position 1.<br />

<br />

<br />

- Correction position 1<br />

<br />

<br />

- Place the second Split unbalance in correction<br />

position 2.<br />

<br />

<br />

- Correction position 2<br />

To return to normal unbalance display, press the button<br />

To perform a new spin, press the button START<br />

I <strong>0316</strong> GB - 14


5.9 - UNBALANCE OPTIMIZATION<br />

- This function serves to reduce the amount of weight to be added in order to balance the wheel<br />

- It is suitable for static unbalance exceeding 30g.<br />

- It improves the residual eccentricity of the tyre.<br />

A)<br />

- Mark with chalk a reference point on the adapter and rim<br />

- With the aid of a tyre remover, turn the rim on the tyre by<br />

180°<br />

- Refit the wheel with the reference mark coinciding between<br />

rim and adapter<br />

TYRE<br />

POSITION<br />

RIM POSITION<br />

- RH display: percentage reduction<br />

- LH display: actual static unbalance which can be reduced<br />

by rotation<br />

- Mark the two positions of the rim and tyre, and turn the rim<br />

on the tyre until the positions correspond in order to obtain<br />

the optimization on the display<br />

RETURN TO MEASUREMENT SCREEN<br />

If before pressing the button<br />

no spin was performed, the machine requires one, as follows:<br />

The procedure resumes from point A).<br />

I <strong>0316</strong> GB - 15


5.10 - ALU AND STATIC MODES<br />

On the control panel, press ALU or button to select the type required.<br />

The 5-LED display shows the position where to apply the weights. If a spin has already been performed,<br />

the processor automatically recalculates, for each change of mode, the amounts of unbalance according<br />

to the new calculation.<br />

Button → DYNAMIC → STATIC → DYNAMIC<br />

DYNAMIC<br />

Balancing of steel or rims with application of clipon<br />

weights on the rim edges.<br />

STATIC<br />

Button<br />

ALU<br />

The static mode is necessary for motorcycle<br />

wheels or when it is not possible to place the<br />

counterweights on both sides of the rim.<br />

→ ALU M → ALU 3M → ALU 1 → ALU 2 → ALU M<br />

ALU M<br />

Balancing of alloy rims with hidden application of<br />

adhesive weights.<br />

ALU 3M<br />

Combined application: clip-on weight inside and<br />

hidden adhesive weight on outside (Mercedes).<br />

ALU - 1<br />

Balancing of alloy rims with application of<br />

adhesive weights on the rim shoulders.<br />

ALU - 2<br />

Combined application: adhesive weight outside<br />

and clip-on weight inside.<br />

PAX<br />

PAX type wheel balancing<br />

I <strong>0316</strong> GB - 16


5.11 - MINISTAT - AUTOMATIC MINIMIZATION OF STATIC UNBALANCE<br />

Initial unbalance<br />

sx dx<br />

g g<br />

Position 50°<br />

Possible approximation<br />

sx<br />

g<br />

dx sx dx sx dx sx dx<br />

g<br />

g<br />

g<br />

4 g static residual 3 g 1 g 6 g<br />

static residual static residual static residual<br />

g<br />

g<br />

g<br />

g<br />

With a traditional<br />

balancing machine<br />

Choice with minimum<br />

static residual<br />

This program is designed to improve the quality of balancing without any mental effort or loss of time<br />

by the operator. In fact by using the normal commercially available weights, with pitch of 5 in every 5<br />

g, and by applying the two counterweights which a conventional wheel balancer rounds to the nearest<br />

value, there could be a residual static unbalance of up to 4 g. The damage of such approximation is<br />

emphasized by the fact that static unbalance is cause of most of disturbances on the vehicle. This new<br />

function automatically indicates the optimum entity of the weights to be applied by approximating them<br />

in an “intelligent” way according to their position in order to minimize residual static unbalance. If it is not<br />

possible to minimize completely the static unbalance keeping in tolerance the dynamic unbalance, this<br />

function has the solution to minimize the static unbalance.<br />

I <strong>0316</strong> GB - 17


6.1 - SELF-DIAGNOSTICS<br />

6 - SET UP<br />

ENTER<br />

DISPLAY TEST<br />

- All displays, readouts and LED’s should light up in sequence.<br />

- Turn the wheel in direction of rotation.<br />

- Turn the wheel in reverse direction of rotation.<br />

- In one complete rev.of the wheel (in direction of rotation) this should appear once<br />

ENTER<br />

- Test parameter (Values are not relevant)<br />

ENTER<br />

- Displays the DISTANCE sensor values<br />

ENTER<br />

END OF SELF-DIAGNOSTICS<br />

HOME<br />

STOP<br />

CANCEL SELF-DIAGNOSTICS IN ANY PHASE<br />

I <strong>0316</strong> GB - 18


6.2 - SELF-CALIBRATION<br />

For machine self-calibration proceed as follows:<br />

- Fit a medium-sized steel wheel on the shaft. Example: 6” x 14” (± 1”)<br />

- Preset the exact dimensions of the wheel mounted.<br />

CAUTION!!<br />

Presetting of incorrect dimensions would mean that the machine is not correctly<br />

calibrated, therefore all subsequent measurements will be incorrect until a new<br />

self-calibration is performed with the correct dimensions!!<br />

ENTER<br />

- Perform a spin under normal conditions.<br />

START<br />

- Add 100 g. (3.5 oz) on the outside in any position.<br />

START<br />

- Shift the 100 g.weight from the outside to the inside keeping the<br />

same position.<br />

START<br />

- Rotate the wheel so to have the 100 g. weight to the 12 o’clock<br />

position.<br />

ENTER<br />

END OF SELF-CALIBRATION<br />

HOME<br />

STOP<br />

CANCEL SELF-CALIBRATION IN ANY PHASE<br />

I <strong>0316</strong> GB - 19


7 - ERRORS<br />

During machine operation, various causes of faulty operation could occur. If detected by the microprocessor,<br />

they appear on the display as follows:<br />

ERROR<br />

Black<br />

MEANING<br />

The wheel balancer does not switch<br />

on.<br />

1. Verify correct connection to the mains.<br />

2. Check and if necessary replace the fuses on the power board.<br />

3. Verify display function in self-diagnostics mode.<br />

4. Replace the computer board.<br />

Err. 1 No rotation signal. 1. Verify belt tautness.<br />

2. Verify the function of the phase pick-up board and, in particular,<br />

the reset signal.<br />

3. Replace the phase pick-up board.<br />

4. Replace the computer board.<br />

Err. 2<br />

Speed too low during detection.<br />

During unbalance measurement<br />

rotation, wheel speed is less than 42<br />

rpm.<br />

1. Make sure that a car wheel is mounted on the wheel balancer.<br />

2. Verify belt tautness.<br />

3. Verify the function of the phase pick-up board and, in particular,<br />

the reset signal.<br />

4. Replace the computer board.<br />

Err. 3 Unbalance too high. 1. Verify wheel dimension settings.<br />

2. Check the connection of the piezo sensors.<br />

3. Perform machine calibration.<br />

4. Mount a wheel with more or less known unbalance (less than 100<br />

grammes) and verify machine result.<br />

5. Replace the computer board.<br />

Err. 4<br />

Err. 5<br />

Rotation in opposite direction.<br />

After pressing [START], the wheel<br />

begins to rotate in the opposite<br />

direction (anticlockwise).<br />

Guard open<br />

The [START] pushbutton was pressed<br />

without first closing the guard.<br />

1. Verify the connection of the UP/DOWN – RESET signals on the<br />

phase pick-up board.<br />

1. Reset the error by pressing pushbutton HOME/STOP.<br />

2. Close the guard.<br />

3. Verify the function of the protection Switch.<br />

4. Press the [START] pushbutton.<br />

Err. 7 / Err. 8 NOVRAM parameter read error 1. Repeat machine calibration<br />

2. Shut down the machine.<br />

3. Wait for a minimum time of ~ 1 Min.<br />

4. Re-start the machine and verify correct operation.<br />

5. Replace the computer board.<br />

Err. 9 NOVRAM parameter write error. Replace the computer board.<br />

Err. 11<br />

Speed too high error.<br />

During unbalance measurement<br />

rotation, wheel speed is more than<br />

270 rpm.<br />

1. Check if there is any damage or dirt on the timing disc.<br />

2. Verify the function of the phase pick-up board and, in particular,<br />

the reset signal.<br />

3. Replace the computer board.<br />

Err. 12 Unbalance measuring cycle error. 1. Verify phase pick-up board function.<br />

2. Verify correct motor operation.<br />

3. Verify belt tautness.<br />

4. Replace the computer board.<br />

Err.13/<br />

Err.14/<br />

Err.15/<br />

Err.16/<br />

Err.17/<br />

Err.18<br />

Unbalance measurement error. 1. Verify phase pick-up board function.<br />

2. Check the connection of the piezo sensors.<br />

3. Verify machine earth/ground connection.<br />

4. Mount a wheel with more or less known unbalance (less than 100<br />

grammes) and verify machine result.<br />

5. Replace the computer board.<br />

Procedure error in automatic distance<br />

acquisition in ALU M, ALU 3M and PX<br />

mode.<br />

1. Pull out the gauge and measure the outer side distance.<br />

2. Check distance gauge calibration.<br />

3. Check function of distance potentiometer.<br />

No unbalance value shown. 1. Turn the wheel until the imbalance is displayed<br />

I <strong>0316</strong> GB - 20


7.1 - INCONSISTENT UNBALANCE READINGS<br />

Sometimes after balancing a wheel and removing it from the balancing machine, it is found that, upon<br />

mounting it on the machine again, the wheel is not balanced.<br />

This does not depend on incorrect indication of the machine, but only on faulty mounting of the wheel on the<br />

adapter, i.e. in the two mountings the wheel has assumed a different position with respect to the balancing<br />

machine shaft centre line. If the wheel has been mounted on the adapter with screws, it could be possible<br />

that the screws have not been correctly tightened, i.e. crosswise one by one, or else (as often occurs) holes<br />

have been drilled on the wheel with too wide tolerances.<br />

Small errors, up to 10 grams (0.4 oz) are to be considered normal in wheels locked by a cone; the error is<br />

normally greater for wheels fastened with screws or studs.<br />

If, after balancing, the wheel is found to be still out-of-balance when refitted on the vehicle, this could be<br />

due to unbalance of the car brake drum or very often due to the holes for the screws on the rim and drum<br />

sometimes drilled with too wide tolerances.<br />

In such case a readjustment could be advisable using the balancing machine with the wheel mounted.<br />

I <strong>0316</strong> GB - 21


8 - ROUTINE MAINTENANCE<br />

Switch off the machine from the mains before carrying out any operation.<br />

8.1 - TO REPLACE THE FUSES<br />

Remove the weight holder shelf to gain access to the power supply board where the fuses are located<br />

(see Exploded Drawings). If fuses require replacement, use ones of the same current rating.<br />

If the fault persists, contact Technical Service Department.<br />

NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE<br />

9 - RECOMMENDED SPARE PARTS LIST<br />

(For references, see exploded drawings)<br />

CODE<br />

DESCRIPTION<br />

020600503 Bearing 6005 - 2Z Ø 25/47/12<br />

181198630 Spring 19863P<br />

080077004 Rigid belt - Poly V - TB2 - 770 - 4 Vee’s<br />

67M38954H<br />

Position pick-up board with cable<br />

05PR55985<br />

LEXAN panel<br />

511242101 Oscillating switch 16A<br />

67M36950A<br />

Power board<br />

681002000 Fuses DM5x20 - 2A<br />

86SC58670<br />

Computerboard<br />

181206560 Spring, rim distance gauge 20656P<br />

86SB40113<br />

Cable with protective microswitch<br />

SPECIAL PARTS FOR 230 V MACHINE<br />

50FG54366<br />

Single phase motor 230V/50-60 Hz - 0.12Kw HB63B-4<br />

86SZ50867<br />

Complete power board<br />

611000312 Braking transformer 30 VA -0/50<br />

568001058 Capacitor 10MF 450V FASTON screw M8<br />

611000308 Power supply transformer 30 VA 230 9/9<br />

SPECIAL PARTS FOR 115 V MACHINE<br />

50FG54283<br />

Single phase motor 115V/50-60 Hz - 0.12Kw HB63B-4<br />

86SZ50868<br />

Complete power board<br />

611000313 Braking transformer 30 VA 115 -0/25<br />

568003558 Capacitor 35MF 450V FASTON screw M8<br />

611000307 Power supply transformer 30 VA 115-9/9<br />

I <strong>0316</strong> GB - 22

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