- 8 - Jema Autolifte A/S wheel balancer DWC
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The machine is calibrated at the end of the cycle. The display reads “END CAL”.
Remove the 100 gram weight from the wheel, which can now be balanced with a further cycle.
The values that the machine records from this self-calibration operation are automatically stored in a special memory which also
maintains them when the machine is switched off, with storage lasting for about 10 years, so the machine will be ready for
correct functioning every time it is switched on.
However, the self-calibration operation can be repeated as often as you like or whenever the correct functioning of the machine
is in doubt.
3.10 STATIC-ALU functions
(For balancing wheels of motorcycle, in light alloy or special construction forms) Ref. Fig.6
NORMAL
: for balancing wheel rims in steel or light alloy by applying weights to the edge of
the rim with clips.
ALUS
: for balancing special shape wheel rim
(Look 3.8.1)
ALU1
: for balancing of the light alloy rims with application of adhesive weights on the rim
shoulders
ALU2
: for balancing wheel rims in light alloy with application of the inner side adhesive
weight. Position of the inner side weight is the one shown in the figure
ALU3
: for combined balancing: clip-on weight on the inside; hidden application of the
adhesive weight on the outside (Mercedes).
St
.: STATIC correction is required for motorcycle wheels or when it is not possible to place
the counterweights on both sides of the wheel rim.
- The ALU functions available can be selected at any time to provide a reading of the
correction weights to be applied to different positions from those shown in Figure 4 (normal).
Press key ALU to select the desired function. For each function, the microprocessor
elaborates the real values of the compensating weight corrected on the basis of the position
of the correction weight and memorizes them quickly on the unbalance displays.
3.11 Optimizing the unbalance
The optimizing operation enables you to reduce the amount of weight to add to the wheel in
order to balance it. In many cases, an improvement of the residual eccentricity on the tire
can also be achieved.
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Press key OPT, The display reads “r.S.”
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Press START The machine runs a measuring cycle.
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The display gives an instruction to turn the tire on the wheel rim. Make a reference
mark on the adapter and wheel rim with chalk, so as to be able to refit the wheel rim on
the bead of the tire in the same position.
Fig.6
- Use a tire changer to rotate the tire through 180 on the wheel rim.
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Fit the wheel rim back onto the adapter in the same position as before.
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Press START. The machine runs a second measuring cycle.
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The displays now read as follows: Right hand display: % value (symbol
current condition of the wheel.
Left hand display: Current static unbalance value. This is the value that can be reduced by the figure, read off the right
hand display by turning the tire on the rim.
LEDs:
Manually turn the wheel until the outer LED’s light up (display position); mark the top of the tire. Continue the
(manual) rotation and similarly mark the wheel rim where it corresponds to the position indicated by the inner LED’s.
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Unbalance optimizing is achieved by turning the tire on the wheel rim again (using a tire remover) until the two marks
line up. Press the STOP key to end the unbalance reduction operation and return to measuring wheel unbalance.
Summary of Contents for DWC
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Page 14: ... 14 Jema Autolifte A S wheel balancer DWC ...
Page 15: ... 15 Jema Autolifte A S wheel balancer DWC 8 POWER SUPPLY LAYOUT DIAGRAM 220 V CONNECTION ...
Page 17: ... 17 Jema Autolifte A S wheel balancer DWC 10 EXPLODED WHEEL BALANCER DRAWINGS ...
Page 18: ... 18 Jema Autolifte A S wheel balancer DWC ...
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