Use and maintenance manual – 10/2016 Rev. 3 Page 21
16. HIDDEN WEIGHTS PROGRAM
This program divides the external weight W in two weights W1 and W2 (smaller than the initial external weight W) located in any
two positions selected by the operator.
The two weights W1 and W2 must form a maximum angle of 120° including the external weight W, as shown in Figure F16.1.
Figure F16.1: Hidden Weights Program: valid and invalid conditions for use. In this example, the external balancing weight W is
marked at 12 o'clock (H12), but it can also be marked at 6 o'clock (H6) or 3 o'clock (H3): see text
The Hidden Weights program is used for aluminum rims when:
• You want to hide the external weight behind two spokes for aesthetic reasons.
• The position of the external weights coincides with a spoke, therefore a single weight cannot be applied.
NOTE: This program can be used with any Program Type and with any Wheel Type. It can also be used to divide the static weight into
two separate weights (especially useful with wheels for motorbikes).
To use the HIDDEN WEIGHTS program, proceed as follows:
1. Perform wheel balancing without applying the external weight;
2. Rotate the wheel manually until all external imbalance search LEDs light up (see detail [4] in figure F13.1);
3. For ease of use, make a reference mark on the tyre in the imbalance position at 12 o'clock;
4. Press [F+P5] to run the Hidden Weights program. If the wheel is balanced on the external side, the
machine will display error code Err 050 to indicate that the operation is not allowed;
5. If instead there is an imbalance on the external side, the machine will display the message shown in Figure F16.2;
Figure F16.2: W1 weight position input
NOTE: You can exit the “Hidden Weights” program at any time by pressing [F+P5] .
6. Manually rotate the wheel anticlockwise up to the point where you want to apply the external weight W1, and press [P1]
to confirm. The angle formed by W1 and by the initial external weight W must be less than 120°;
The angle between the two weights
W1 and W2 is ≥ 120°.
External imbalance W is not within W1
and W2.
The angle between the two weights
W1 and W2 is < 120° and includes
the initial external weight W.
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