Hofmann megaspin 300, Operating Instructions Manual

Page 1: ... Operating instruction manual Controlpanel Wheel guard Weight and accessory tray Adapter holder pins Balancingspindle Automatic rim distance diameter gauge Automaticwidth gauge optional Parking brake pedal Pneumaticspindle locking pedal Version P HofmannIndustrialGmbH A 5302 Henndorf Hauptstraße 59 Tel 43 6214 6466 12 Fax 22 ...

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Page 3: ...LANCINGMACHINE 10 5 1 DOUBLE OPERATOR PROGRAM 10 5 2 PRESETTING OF WHEEL DIMENSIONS 10 5 2 1 AUTOMATICPRESETTING 10 5 2 1 1 AUTOMATICWIDTH OPTION 11 5 2 1 2 ALU M WHEEL 11 5 2 2 MANUAL PRESETTING Use only in special cases or for checks 12 5 3 RECALCULATIONOFTHEUNBALANCEVALUES 14 5 4 RESULT OF MEASUREMENT 15 5 4 1 INDICATIONOFEXACTCORRECTIONPOSITIONINALU M ALU2 ALU3 15 5 4 2 RESOLUTIONOFTHEUNBALANC...

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Page 5: ...ized personnel do not approach the balancing machine during the work cycle Avoid placing counterweights or other objects in the base which could impair the correct operation of the balancing machine 1 1 1 STANDARD SAFETY DEVICES STOP push button for stopping the wheel under emergency conditions The safety guard of high impact plastic is with shape and size designed to prevent risk of counterweight...

Page 6: ... 500mm Min max compressed air pressure 7 to 10 kg cm 2 approx 0 7 to 1MPa approx 7 to 10 BAR approx 100 to 145PSI 2 HANDLING AND HOISTING Fig 2 N B NEVER HOIST THE MACHINE USING OTHER LIFTING POINTS 3 COMMISSIONING 3 1 ANCHORING The machine can be operated on any flat non resilient floor Make sure that the machine rests solely on the three support points provided fig 2 3 2 ELECTRICAL CONNECTION Th...

Page 7: ...ng from the adapter Always actuate the unlocking control pedal with the machine stationary in order to avoid stress and abnormal wear on the adapter 3 4 ADAPTER MOUNTING The balancing machine is supplied complete with cone adapter for fastening wheels with central bore Other optional adapters can be mounted Fig 3 Fig 3A A B A B Megaspin300 a Back off screw B and remove threaded end piece A b Fit t...

Page 8: ...el diameter at the point of application of the counterweight It also allows correct positioning of the counterweights on the inside of the rim using the specific function see 5 4 1 which allows reading on the displays the position used for the measurement see 5 2 1 2 4 4 AUTOMATIC WIDTH GAUGE OPTIONAL This gauge allows measuring the rim of the wheel to be balanced in the point of application of th...

Page 9: ...on MENU selection confirm 13 Push button cycle start 14 Emergency stop push button 15 Pushbuttons manualDISTANCE DIAMETER WIDTHsetting 16 Homepushbutton 17 Position repeat push button 18 Push button selection of unit of measurement diameter width 19 Push button unbalance optimization control N B Only use the fingers to press the push buttons Never use the counterweight pincers or other pointedobje...

Page 10: ...10 0068 4 6 1 FUNCTIONS MENU CONTROL ...

Page 11: ...r 2 for subsequent balancing operations without setting the dimensions again 5 2 PRESETTING OF WHEEL DIMENSIONS 5 2 1 AUTOMATIC PRESETTING Standard wheels calibration necessary also for modes ALU 1 2 3 4 Static Fig 5 DISTANCE DIAMETER Move the gauge tip against the rim keeping it in position for at least 2 seconds N B The measurement is the same in Position A or Position B Always use the round par...

Page 12: ... shown in fig 5B N B When the acoustic beep is enabled see section 4 6 1 acquisition of the dimensions is accompanied by a beep Return the gauges to rest position N B If the symbol of fig 5B remains on the display it means that at least one of the two measuring gauges is not in rest position The two measurements distance diameter and width can be made at different moments In this case first make t...

Page 13: ...or B in fig 5 as required Manual presetting is possible using the buttons as described below 5 2 2 MANUAL PRESETTING Use only in special cases or for checks Standard wheel Fig 8 Press until reading the symbol Preset the distance in cm of the wheel from the machine Select by pressing Preset the nominal width which is normally stamped on the rim or else measure the width with the calliper gauge stan...

Page 14: ... 9 PRESETTING Select the dimension to be preset by pressing N B When the outer diameter is not preset the system automatically calculates outer diameter 0 8 x inner diameter 5 3 RECALCULATION OF THE UNBALANCE VALUES Press after a new measurement presetting Reading 1 2 14 mm 1 2 ...

Page 15: ...ACT CORRECTION POSITION IN ALU M ALU2 ALU3 In correction modes ALU M ALU2 ALU3 it is possible to cancel approximations in the mounting of the counterweights by proceeding as follows 1 Press push button N B Correction position changes from 12 0 clock to 6 o clock 2 Bring the wheel into correct angular position indicated by the instrument for each side 3 Pull out the gauge in Pos B of fig 5 bearing ...

Page 16: ...to 12 RISULTS Move a spoke at random to the 12 o clock position Split unbalance not in position bring into position 1 Correction position 1 Bring second split unbalance in position 2 To return to normal unbalance display perform a new spin by pressing or else push button N B If button is pressed the angular correction positions are at 6 o clock see also 5 4 1 the other functions are disabled 15 30...

Page 17: ... by 180 Refit the wheel with the reference mark coinciding between rim and adapter RH display percentage reduction LH display actual static unbalance which can be reduced by rotation Mark the two positions of the rim and tyre and turn the rim on the tyre until the positions correspond in order to obtain the optimization on the display RETURN TO THE MEASUREMENT SCREEN TYRE POSITION RIM POSITION If ...

Page 18: ...outside and clip on weight inside restingsurface 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 applyingthetwocounterweightswhichaconventional wheelbalancerroundstothenearestvalue there...

Page 19: ...g appears Turn the wheel in reverse direction of rotation The following appears In one complete rev of the wheel in direction of rotation this should appear once Test parameter Displays values of DISTANCE sensor Displays values of DIAMETER sensor Displays values of WIDTH sensor optional END OF SELF DIAGNOSTICS CANCELS SELF DIAGNOSTICS IN ANY PHASE oppure or MENU ...

Page 20: ...0 g 3 5 oz on the outside in any position Shift the 100 g weight from the outside to the inside keeping the same position Turn the wheel with the 100 g weight to the 12 o clock position oppure or CAUTION Presetting of incorrect dimensions would mean that the machine is not correctly calibrated therefore all subsequent measurements will be incorrect until a new self calibration is performed with th...

Page 21: ...exactly as described above If the error persists contact the Technical Service Department In the event of incorrect input in the rim distance gauge calibration function press to cancel it 6 3 2 DIAMETER GAUGE Currently preset diameter Set the diameter with which to calibrate the machine 10 18 Press Move the gauge tip into measuring position N B at 12 o clock positioning it well as indicated in Fig...

Page 22: ...e to calibrate the width gauge with the assistance of another person so as to correctly position the gauge tip in the two positions required and at the same time press button In the event of errors or faulty operation the wording reappears on the displays return the width gauge to rest position and repeat the calibration operation making sure to carry it out as described above If the error persist...

Page 23: ...incorrect indication of the machine but only on faulty mounting of the wheel on the adapter i e in the two mountings the wheel has assumed a different position with respect to the balancing machine shaft centre line If the wheel has been mounted on the adapter with screws it could be possible that the screws have not been correctly tightened i e crosswise one by one or else as often occurs holes h...