EM 8070 operator’s manual
GB
Err 29 Wheel spin device failure. Try moving the wheel by hand; if the fault
does not disappear, call in the technical service.
Err 30 Failure on wheel spin device. Switch off the machine and call in the
technical service.
Err 31 Optimisation procedure already started by another user.
Cr Err Spin carried out with wheel guard up. Lower the guard in order to carry out
the spin.
BALANCING ACCESSORY
AVAILABILITY STATUS
This check allows the user to make sure that wear has not altered the mechanical
specifications of flanges, cones, etc., beyond the specified limits.
The test is carried out with a perfectly balanced wheel (to zero without the threshold
and showing the first gram). When this wheel is mounted on the balancing machine,
removed and remounted in a different position, the imbalance weight should not be
more than 10 grams.
If the imbalance is higher, check all the accessories with care and replace any that show
dents, abnormal wear, bent flanges, etc.
Always remember that if you are using a cone to centre the wheel on the shaft, you will
never obtain good results if the hole in the rim is not perfect, i.e.: off-centre or out-of-
round. Results are always better when the wheel is centreed with the rim holes.
It should be remembered that any difference between the way the wheel is mounted
on the vehicle and the way it is mounted on the balancing machine will undoubtedly
generate a certain degree of imbalance.
This can only be eliminated with “on vehicle balancing”, using a finishing balancing
machine to complement the work on the bench balancing machine.
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