Hofmann geodyna 7100 Manual De Operador página 48

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5-16
Operation
If optimisation is not required, weight minimisation (also
known as matching) is possible.
For example, when the rim has no shape defects,
meaning that wheel imbalance depends exclusively
on tyre irregularities. In such cases, the rim imbalance
may be positioned relative to the tyre imbalance so
that they compensate one another and the machine
calculates a minimum correction weight.
Instructions for balancing
optimisation / weight minimisation (Fig. 5-16)
During tyre changing operations required for balancing
optimisation / weight minimisation, the wheel balancer
can be used as a conventional wheel balancer by
another operator.
For this purpose, interrupt the optimisation /
minimisation program by pressing the STOP key (4).
The electronic unit will store the current program step,
the rim dimensions and all measurements taken so far.
To continue with the optimisation / minimisation
program, press the F key (1) in succession. The
program then continues from the step where it was
interrupted, with the relative measurement values and
the balancing optimisation / weight minimisation may
continue.
If a measuring run is interrupted by operation of the
STOP key (e.g.: to clamp the wheel better or due to
an emergency), the machine returns to the previous
program step. Reset the valve position and continue
balancing optimisation / weight minimisation.
After interruption by operation of the STOP key the
readings refer to the imbalance of the latest measuring
run.
To restart balancing optimisation / weight minimisation
after an interruption, simply press the PRO-MATCH
key (2).
During balancing optimisation / weight minimisation a
measuring run always has to be started with the START
key (3). The "Start measuring run by closing wheel
guard" operating mode is not operative in this case.
Wheel clamping means compensation is cancelled
by starting the balancing optimisation / weight
minimisation cycle.
Balancing optimisation program cycle
The following is a description of the balancing
optimisation program cycle (code OP) and weight
minimisation (code UN).
Balancing optimisation
If after the measuring run the imbalance in the left or
right correction plane and/or the static imbalance is
more than 30 grams, perform automatic optimisation
by activating the F+PRO-MATCH symbol.
• Before optimisation check that the rim dimensions
have been set correctly.
You cannot correct the data later.
• Demount the tyre and clamp only the rim for the
compensation run.