Corghi ET88 Manual De Uso página 84

ALU 5 balancing program: provides statistical calculation of the
balancing weights for application on the inner rim disc and the outside of the rim,
as shown in the icon.in the icon.
- Once a wheel spin has been performed, when the centred position is reached the
screen indicates where the balancing weights have to be placed in relation to the
program chosen.
- Set the nominal geometrical data of the wheel as described in the ENTERING
THE WHEEL DATA section. The machine will calculate new width and diameter
values using corrections on a statistical basis. If these values are outside the
normally accepted range stated in the TECHNICAL DATA section, the message
"Alu Err" is displayed.
- Perform a wheel spin and proceed as described for dynamic balancing. When
the centred position is reached, the screen shows the indication of where the
balancing weights have to be placed in relation to the program selected.
Some slight residual imbalance may remain at the end of the spin test due to the
considerable difference in shape found in rims with the same nominal diameters.
To counter this, change the amount and position of the weights in accordance with
the "balance check" diagram (fig.16) until an accurate balance status has been
obtained.
FLASH OPT OPTIMISATION PROGRAM
This program has been made even simpler and faster than other types of Flash
OPT program; in most cases, the results obtained can be compared with those of
the Standard program described below, using fewer wheel spins and therefore
speeding up the procedure.
For guidance on this procedure, refer to the next section, bearing in mind that the
flash version of the program must not be accessed until a wheel spin has been
performed.
The Flash OPT program automatically skips the first phase with the rim only (OPT
1) and the start of the procedure is indicated by Flash OPT.
The calculations made by this program are based on the imbalance values
obtained during the last wheel spin performed; for this reason, the last spin must
have been carried out with the wheel on which the quick optimisation procedure is
to be used.
- Turn the wheel until the valve is at 12 o'clock.
- Select the
See OPT3 of the Standard OPT program.
See OPT4 of the Standard OPT program.
84
OPT 1
icon to memorise the position of the valve.
OPT 2
OPT 3
ET 88 operator's manual