Hofmann megaspin 300, Руководство по эксплуатации

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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. 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 reading the machine calibration parameters. Repeat the self-calibration.
9 General fault in memory of the machine calibration parameters. Contact Technical Service
Department.
10 Measured width value too small. Repeat the automatic width measurement.
11 Speed too high during unbalance measurement spins.
12/13/14 Difficulty in reading the analog signal. Contact Technical Service Department.
15/17 Inside/outside analog signal too high. Contact Technical Service Department.
16/18 Inside/outside analog signal too low. Contact Technical Service Department.
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 found to be still
out-of-balance when refitted on the vehicle, this could be due to the unbalance of the car 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.
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, item 317). If fuses require replacement, use ones of the same current rating. If the
fault persists, contact the Technical Service Department.
8.2 - ADAPTER END PIECE FOR SPINDLE SE
- Keep the internal felt ring constantly lubricated.
NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE.