130
EM 9250
Operator’s manual
CHECK FOR CORRECT FUNCTIONING OF
BALANCING ACCESSORIES
Checking balancing accessories allows the operator to make sure that wear has not altered the
mechanical specifications of flanges, cones, etc. beyond the specified limits.
A perfectly balanced wheel, which has been disassembled and reassembled in a different posi-
tion, should not show an unbalance value greater than 10 grams.
When a higher unbalance is found, check all the accessories carefully and replace the components
that are not in perfect condition (e.g. showing dents, abnormal wear, flange unbalance, etc.).
Anyhow it is necessary to bear in mind that, if the cone is used to centre the wheel, satisfactory
balancing results cannot be achieved if the central hole of the wheel is out-of-round or incor-
rectly centred; Better results can be achieved by centring the wheel using the securing holes.
Bear in mind that any re-centring error made when the wheel is mounted on the car can be re-
moved only removed with an "on-the-vehicle balancing" of the wheel, using an on-the-vehicle
wheel balancer to complement the work of the wheel balancer.
TROUBLESHOOTING
Below is a list of faults that may occur and that the user can solve if the cause is found among
those indicated.
For any other malfunction or fault call in the technical support centre.
The machine does not switch on
(the displays remain switched off)
No power at the socket.
➥
Check the mains voltage is present.
➥
Check the electrical power circuit in the workshop.
The machine plug is defective.
➥
Check that the plug is undamaged.
One of the FU1-FU2 fuses of the rear electrical panel has blown
➥
Replace the blown fuse.
The diameters and width values measured with the automatic
measuring devices do not match the rated values of the rims.
The sensors have not been positioned correctly during measurement.
➥
Bring the sensors to the position shown in the manual and follow the instructions in the
WHEEL DATA ENTRY section.
The external sensor has not been calibrated.
➥
Calibrate the ultrasonic sensor. See warning instructions at the end of the ULTRASONIC
WIDTH SENSOR CALIBRATION section
The external mechanical sensor has not been calibrated.
➥
Carry out the sensor calibration procedure. See warning instructions at the end of the EX-
TERNAL MECHANICAL SENSOR CALIBRATION section.
The automatic measuring devices are not working
The sensor was not in the rest position at switch-on (A 10) and the
key has been pressed
