Corghi EM9980 Manual De Uso página 58

shown in figure 15d. Press the icon
to confirm the selected balancing programme.
After this operation, the machine may request
confirmation of the acquired dimensions; in this
case, proceed as described above.
CAUTION
The status of the internal sensor is indicated
in the LIVE programme (Fig.15). If it is GREEN
, this means that the laser is reading
correctly, whereas if it is RED
means that the laser does NOT read. To remedy
this situation, move the wheel slightly until the
sensor status changes.
If the sensor configuration does NOT change by
moving the wheel (or using a different wheel)
enter the dimensions manually and contact
technical support.
Note: the balancing planes where the adhesive
weights are to be applied may be selected by
the user according to the specific shape of the
rim. It should be remembered, however, that in
order to reduce the quantity of the weight that is
to be applied it is preferable to select balancing
planes that are as far apart as possible: if the
distance between the two planes is less than
37 mm (1.5"), the A 64 message is displayed.
Dynamic balancing (Dynamic)
This balancing mode is the most commonly used
one. If a different balancing programme is run-
ning, the programme must be set by selecting
the correct icons.
Now proceed as follows:
Press the Dimensions button
-
enable automatic dimension measurement.
The button remains pressed and the inner
light turns red
- Spin the wheel by lowering the guard.
58
this
to
.
To ensure accurate results, do not apply undue
stress to the machine during the spin and do not
interfere with laser sensor reading.
- Select the first side to be balanced.
- Rotate the wheel until the central element of
the corresponding position indicator lights
up.
- Apply the indicated balancing weight to the
12 o'clock position on the rim.
- Repeat the operations listed for the second
side of the wheel.
- Perform a test spin to check balancing accuracy.
If it is not considered satisfactory, change the
value and position of the previously applied
weights, according to the data indicated in the
balancing control diagram (Fig. 14).
Bear in mind that a counterweight positioning
error of just a few degrees may lead to a re-
sidual unbalance as large as 5-10 grams during
the verification phase, especially in the case of
large unbalances.
WARNING
Check that the system which fits the weight to
the rim is in optimum condition.
A weight which is not fitted properly or correctly
may come off as the wheel rotates, thus creating
a potential danger.
The wheel can be locked in three ways in order
to make the weight application operation easier:
- By keeping the wheel in the centred position
for approximately one second. The brake ac-
tivates automatically with a reduced braking
force so as to allow the operator to move the
EM9980 - Operator's manual
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