General Information - Hofmann geodyna 8200 Manual De Operador

Operation
5.17 O p t i m i s a t i o n / W e i g h t
Minimisation

5.17.1 General information

The unbalance optimisation is used to minimise
operation noise.
During the optimisation the tyre is fitted on the rim in
a specific position based on the result of the different
unbalance measuring runs. This generally means that,
where present, axial and radial run–out and radial and
lateral forces are reduced and thus wheel running
conditions optimised. In addition, the entity of the
compensation weights required for wheel balancing
can be reduced.
If optimisation is not required, it is possible to achieve
weight minimisation.
This is possible, for example, when the rim does not
show shape defects, meaning that wheel unbalance
depends exclusively on tyre irregularities. In this case
the unbalance of the rim can be readjusted compared
to the unbalance of the tyre in a way that the they
compensate each other and a lower correction weight
is required.
5.17.2 O p e r a t i n g i n s t r u c t i o n s f o r
optimisation / weight minimisation
During tyre changing operations, as required for
optimisation/minimisation, the wheel balancer can be
used as a conventional wheel balancer by another
operator.
For this purpose, interrupt the optimisation/weight
minimisation program by pressing the ESC key or
STOP. key. The electronic control unit will then store
step 4, 6, 10 of the current program, the rim dimensions
and all data so far measured.
If another optimisation/weight minimisation run is to
be started after an interruption, it is sufficient to press
7
the key 7 (Fig. 4-10).
4-10
During optimisation/weight minimisation a measuring
run always has to be started with the START key.
"Starting by closing the wheel guard" is not operative
in this case.
The compensation carried out by the wheel clamping
device is cancelled by starting an optimisation or
minimisation cycle.
120