Corghi ET88 Manual De Uso página 80

WARNING
Check that the system which fits the weight to the rim is in optimum condition.
A weight which is not properly or correctly fitted may come off as the wheel
rotates, creating a potential danger.
If the "RPA" (position centred) program is active, at the end of each balancing
wheel spin the machine stops the wheel in the position for application of the
weight on the inside; if this balancing weight is equal to zero, the wheel is stopped
in the position for the outside. If theicon
selected the automatic position search for the second side position begin.
This function is described in greater detail in the AUTOMATIC POSITION SEARCH
section.
A wheel can be balanced by applying a single counterweight on one of its sides
or in the centre of the well; in this case, the wheel is balanced statically. However,
there is still the risk of dynamic imbalance, which becomes more significant as the
width of the wheel increases.
- Press the
Now only one indicator for the position search is present on the image displayed;
- set the wheel diameter value (in static mode, there is no need to enter the width
and distance values);
- spin the wheel;
- at the end of the spin turn the wheel until the central element of the position
indicator illuminates;
- lock the wheel in position by pressing the STOP key, to simplify the weight
application stage which follows;
- fit the balancing weight at 12 o'clock (it makes no difference whether it is on
the inside or outside of the rim or in the centre of the well). If the weight is
placed in the centre of the well,it will be on a diameter smaller than the nominal
diameter of the rim, so during the diameter setting stage a diameter value 2 or 3
inches below the nominal diameter will have to be entered if the wheel is to be
balanced correctly.
Bear in mind that it is often possible to obtain better results if the weight is
divided into two equal parts, for placing on either side of the rim.
- Perform a checking wheel spin to check the precision of the balancing operation.
To balance aluminum wheels we usually use self-adhesive weights that are
positioned differently from the clip weights used in standard balancing (fig. 17).
There are various ALU balancing programs, specially designed to work with rims of
this type.
80
Static balancing
Static balancing program icon from the main menu.
Balancing aluminum (ALU) wheels
position search is
ET 88 operator's manual