CEMB USA C72_2SE EVO (B) - Manual (Page 22)

22
Use and maintenance manual Rev. 12-2009
ENGLISH
Err. 22 Maximum number of spins
possible for the unbalance
measurement has been exceeded. 1. Check that a vehicle wheel has been mounted on the wheel
balancer.
2. Check functioning of the phase encoder and, in particular, the
reset signal.
3. Replace the computer board.
Err. 24 Distance between the spokes
less than 18 degrees. The minimum distance between the spokes where the 1.
unbalance is to be split must be greater than 18 degrees.
Repeat the SPLIT function increasing the distance between 2.
the spokes.
Err. 25 Distance between the spokes
greater than 120 degrees. The maximum distance between the spokes where the 1.
unbalance is to be split must be less than 120 degrees.
2. Repeat the split function increasing the distance between the
spokes.
Err. 26 First spoke too far from the
unbalance The maximum 1. distance between the unbalance position and
the spoke must be less than 120 degrees.
Repeat the split function increasing the distance between the
2.
spokes and the unbalance.
Err. 55 Sonar readout error.
Sonar values are insuffi cient for
correct measurement of eccentri-
city. 1. Position the eccentricity measurement sonar correctly before
performing the measurement.
2. Make sure that the wheel does not halt before completing at least
4/5 revolutions after the fi rst braking impulse.
3. Mount a wheel of medium dimensions (14”x5 ¾”) and perform
an eccentricity measurement . If in these conditions error 55
no longer occurs, this means that the wheel inertia causing the
problem is such as to half the wheel before having acquired the
minimum number of values necessary for reliable eccentricity
measurement.
Err. 56 Lateral Sonar readout error.
Lateral Sonar value readout
impossible. 1. Position the eccentricity measurement lateral sonar correctly
before performing the measurement.
2. Check eccentricity lateral sonar connections.
3. Check the power supplies on the power board.
4. Replace the eccentricity lateral sonar.
5. Make sure that the wheel does not stop before completing at least
4/5 revolutions after the fi rst braking impulse.
6. Replace the computer board.