Corghi EM9780 plus Manual De Uso página 69

- Spin the wheel by lowering the guard.
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 ac-
curacy. If it is not considered satisfactory,
change the value and position of the previ-
ously applied weights, according to the data
indicated in the balancing control diagram
(Fig. 16).
1
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 cor-
rectly 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
EM9780 plus - EM9780 C plus AutomaticLine - Operator's manual
o
16
for approximately one second. The brake ac-
tivates automatically with a reduced braking
force so as to allow the operator to move the
wheel manually until the correct position for
the other weight's application is reached.
- By pressing the Stop button
the wheel is in one of the weight application
positions and the brake is not on. The wheel is
unlocked by pressing the same button again,
performing a spin or after 50 seconds.
The shaft locking system can also be useful dur-
ing installation of special centring accessories.
If the Stop button
the wheel is rotating, the spin will be prematurely
interrupted.
In the version with a motorised wheel guard,
pressing the Stop
wheel moving will cause the spin to stop prema-
turely and the wheel guard to open.
If the automatic position search (RPA) function
is active, the machine stops the wheel in the
weight application position on the outer side
at the end of each balancing spin; if it is equal
to zero, the wheel is stopped in the inner side
weight application position.
By selecting the central part of one of the unbal-
ance position indicators or you press and release
the LIVE button
position search starts.
Balancing programmes for alloy
rims ALU 1 - 2 - 3 - 4 - 5
These programmes are used for maximum preci-
sion balancing of light alloy rims.
This type of wheel balancer is particularly suit-
able for application of adhesive weights on the
rim, thanks to the forward position of the wheel
in relation to the body, which allows a large zone
on the inside of the rim to be accessed freely.
To access one of these programmes, select at
least one adhesive weight.
when
is pressed while
button with the
, an automatic centred
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