Hofmann megaspin 300, Руководство по эксплуатации

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5.4.4 - ALU AND STATIC MODES
From the Measurement screen, press button or to select the type required. The 5-LED displays
show the position where to apply the weights. If a spin has already been performed, the processor
automatically recalculates, for each change of mode, the amounts of unbalance according to the new
setting.
Fig. 13 Button
→
DYNAMIC
→
STATIC
→
DYNAMIC
DYNAMIC Balancing of steel or light alloy rims with application of clip-on
weights on the rim edges.
STATIC The STATIC mode is necessary for motorcycle wheels or
when it is not possible to place the counterweights on both
sides of the rim.
Button
ALU
→
ALU M
→
ALU 1
→
ALU 2
→
ALU 3
→
ALU 4
→
ALU M
ALU - 1 Balancing of light alloy rims with application of adhesive
weights on the rim shoulders.
ALU - 2 Balancing of light alloy rims with hidden application of the
outer adhesive weight. Outer weight position is fixed.
ALU - 3 Combined application: clip-on weight inside and hidden
adhesive weight on outside (Mercedes). Outer weight position
is the same as ALU-2.
ALU - 4 Combined application: adhesive weight outside and clip-on
weight inside.
resting surface
5.4.5 - AUTOMATIC ZEROING OF STATIC UNBALANCE
This program is designed to improve the quality of balancing without any mental effort or loss of time by the
operator. In fact when using the normal commercially available weights, with pitch of 5 in every 5 g, and when
applying the two counterweights which a conventional wheel balancer rounds to the nearest value, there could
be a residual static unbalance of up to 4 g. The damage of such approximation is emphasized by the fact that
static unbalance is cause of most of disturbances on the vehicle. This new function automatically indicates the
optimum entity of the weights to be applied by approximating them in an "intelligent" way according to their position
in order to minimize residual static unbalance (theoretical zero). If it is not possible to completely zero the static
unbalance with the dynamic unbalance kept in tolerance, such function supplies the solution for minimizing the
static unbalance.
Selection with
minimum static
residual unbalance
sx dx
23 g 18g
50°
phase shift
sx dx
residual static
25 g 20g
4 g
With
conventional
wheel balancer
Initial
unbalance
Possible approximations
sx dx
25 g 15g
3 g
residual static
sx dx
20 g 20g
1 g
residual static
sx dx
20 g 15g
6 g
residual static