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- 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

Page 1: ......

Page 2: ...nd authorized personnel The training and informing of the operating staff should be done so as to enable them to operate the machine as described in the instructions provided by the manufacturer so that the machine performs in the best possible way and the operations are carried out efficiently and safely For any doubts relating to the use installation and maintenance of the machine please refer t...

Page 3: ...pe of operation to be performed Technical service repairs and replacement of parts All repair and extraordinary maintenance operations should be carried out by authorized and professionally qualified personnel Disconnect the machine from the mains supplies electricity compressed air etc before any maintenance operation Use original spare parts supplied by the manufacturer Consult the technical ser...

Page 4: ...s are all contained on the front panel The keyboard calibration system also provides a sufficient adjustment range to cope with unusual wheels aging motorcycles and cars Some ALU functions are available for specially shaped wheels or for presetting optional balancing machine functions see 3 5 using the keyboard 4 INSTRCUTIONS FOR USE 3 1 Lifting and Installation Lever the base to lift the balancin...

Page 5: ... side UNBALANCE VALUE digital display 6 DISTANCE calibration key 7 WIDTH calibration key 8 DIAMETER calibration key 9 Key for selecting g oz and mm inches self calibrating 10 Emergency key 11 Key to start cycle 12 Opt program 13 Threshold key 14 Key for selecting type of correction 15 Recalculation key N B Only use the fingers to press the push buttons Never use the pincers for the counterweights ...

Page 6: ...ured in mm or inches Start measuring cycle Emergency cycle stop The unit of measurement chosen for the unbalance grams or ounces and the option to start by closing the guard or by pressing the START key are stored in the machine s memory when it is switched off If the unit of measurement selected for the width and diameter mm or inches is inches this selection must be repeated every time the machi...

Page 7: ...of the machine to the inner track of the rim where glue grams must be placed B keys AE Distance from the edge of the machine to the outer track on the rim where glue grams must be placed D keys d1 Rim diameter measured at the inner track which adhesive glue grams to be installed and entered Usefully be measured before mounting the wheel on DWC Aluminum is pressed and hold and D keys change rim dia...

Page 8: ...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...

Page 9: ...r supply before executing any maintenance operations 4 1 Adjusting the belt pulley 1 Slightly loosen the four screws that support the motor and move the motor to adjust the belt tension 2 Block the four motor screws carefully check that the belt does not play laterally and touch the casing when in movement 4 2 Computer board replacement Machine parameters input When the computer board is to be rep...

Page 10: ...scalculation a Incorrect self calibration b Too high unbalance c Faulty memory card a Repeat the self calibration b Check the correct wheel centering on the spindle c Replace the board ERR 4 Wrong rotation direction a Wrong motor connection a Reverse the connection in the motor terminal board ERR 5 Open protection before beginning launch a Open protection b Faulty protection switch a Close the pro...

Page 11: ...ng machine N B When the computer board is replaced preset the machine parameters indicated on the related nameplate 6 1 CHECKING AND SETTING OF STATIC VALUE STI N Y Y Carry out self calibration Wheel balancing Tolerance 1 gram Select STATIC Apply 100 grams on inside Perform the spin Is the STATIC value on the inside between 98 and 102 grams Select function SELECTION OF MACHINE PARAMETERS Increase ...

Page 12: ...Y Carry out self calibration Wheel balancing Tolerance 1 gram Apply weight of 100 grams on the outside Perform the spin Is the 100 gram counterweight in the six o clock position Select function SELECTION OF MACHINE PARAMETERS Modify value S by making various attempts S is expressed in degrees END ...

Page 13: ...CE VALUE DF N Y Follow the procedure for CHECKING AND CALIBRATION DISTANCE VALUE DF 100 g weight on Inner Side F I the indication of dynamic unbalance is F I 100 5 F E 5 Select MACHINE PARAMETERS modify DF value by increasing or decreasing it 5 figures at a time Make self calibration END ...

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 16: ...ic bush 2 17 Hoop 1 206 P 100 520000 0 Seeger ring 2 18 S 051 230020 0 Motor 1 207 P 100 210000 0 Spring 1 19 B 040 061412 1 Washer 4 208 Y 004 000070 0 Graduated strip 1 20 B 014 050351 1 Screw 2 21 PX 100 110000 0 Plate 1 301 S 042 000380 0 Belt 1 22 B 024 050061 0 Screw 2 302 B 040 103030 1 Washer 1 23 B 040 050000 1 Washer 2 303 B 014 100251 0 Screw 3 24 S 025 000135 0 Cable circlip 1 304 B 05...

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 ...

Page 19: ... 19 Jema Autolifte A S wheel balancer DWC 207 206 205 203 204 202 201 208 ...

Page 20: ... 20 Jema Autolifte A S wheel balancer DWC ...

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