Jema Autolifte DWC-8-E Operation And Maintenance Manual Download Page 7 | Manualshive

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CHAPTER 1 DESCRIPTION OF THE MACHINE

The wheel balancer DWC-8-E is intended to be used to balance dynamically passenger car and
light truck wheels within one measuring run.

1. power switch
2. distance gauge
3. rubber pads
4. feeder

5. quick adapter
6. keyboard
7. foot brake pedal
8. calibration device

Indicator screen

Fig. 1

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Summary of Contents for DWC-8-E

Page 1: ...Computer wheel balancer DWC 8 E Operation and Maintenance Manual Jema Autolifte A S Industrihegnet 2 4030 Tune Denmark Tel Mail 45 48180300 info jemaautolifte dk ...

Page 2: ...2 Operation and Maintenance Manual Passenger car and light truck wheel balancer MODEL DWC 8 E Serial number ...

Page 3: ... 1 DESCRIPTION OF THE MACHINE Chapter 2 TECHNICAL SPECIFICATIONS Chapter 3 SAFETY Chapter 4 INSTALLATION Chapter 5 DESCRIPTION OF SUBPROGRAMMES Chapter 6 NOTES ON OPERATION Chapter 7 MAINTENANCE Chapter 8 MACHINE SCRAPPING Chapter 9 TROUBLESHOOTING III SPARE PARTS CATALOGUE ...

Page 4: ...ed in several ways Pallet stretch film cardboard box Pallet stretch film Pallet cardboard box Stretch film Transportation The packaging must be lifted or moved by means of forklift or pallet trucks Upon delivery of the load to the place of destination it is required to check if it has not been damaged during transportation It is also necessary to check completeness of the delivery against the wayb...

Page 5: ...romagnetic compatibility EMC Part 6 3 Generic standards Emission standard for residential commercial and light industrial orig PN EN 61000 6 4 2002 Electromagnetic compatibility EMC Part 6 4 Generic standards Emission standard for industrial environments orig PN EN ISO 13857 2008 Safety of machinery Safety distances to prevent reaching the upper limbs and lower the danger zones orig PN EN 349 A1 2...

Page 6: ...l includes only these maintenance and safety aspects which may help an operator or maintenance worker to understand better the construction and operation of the wheel balancer as well as to use it most efficiently In order to understand the terminology used in the manual the operator must have specific experience in workshop service maintenance and repair works ability to interpret correctly the d...

Page 7: ... DWC 8 E is intended to be used to balance dynamically passenger car and light truck wheels within one measuring run 1 power switch 2 distance gauge 3 rubber pads 4 feeder 5 quick adapter 6 keyboard 7 foot brake pedal 8 calibration device Indicator screen Fig 1 ...

Page 8: ...of the last measurement NEW MEASUREMENT Button of the wheel balancer calibration CALIBRATION Button starting the hidden weight programme Button of calculation of imbalances CALCULATION OF IMBALANCES Button of selection of the cut off threshold THRESHOLD CHANGE with diode signalisation Function button CAUTION Every instance of pressing any of the buttons is confirmed by a sound signal programme 1 b...

Page 9: ...ter 0 9 m rim diameter capacity 10 30 rim width capacity 2 15 weight imbalance volume indications accuracy 1g weight imbalance placement signalisation accuracy 3 degrees measurement time 6 7 sec weight of the machine ca 50 kg machine dimensions with adapter 77x60x33 cm wheel weight capacity up to 60 kg shaft rotational speed during measurement 95 130 rpm shaft rotational speed calibration with a w...

Page 10: ...uck wheels within one measuring run It is prohibited to use it in any other way In particular the wheel balancer is not suitable for using for purposes other than balancing balancing heavy truck wheels CAUTION Jema Autolifte and vendor shall not be liable for any personal injuries or damages to vehicles or any other objects caused by improper or unauthorised use of the wheel balancer CAUTION IT IS...

Page 11: ...lectric shock Hazards for staff The paragraph describes possible threats for the operator or any other people present near the wheel balancer caused by its improper use Risk of hitting There is a risk of hitting the component of the machine In the event when the guard is opened the staff must take special care not to hit themselves at the components of the machine Risk of wheel getting loose Befor...

Page 12: ...damaging a component of the wheel balancer while it is in operation In order to manufacture a reliable and safe wheel balancer Jema Autolifte used appropriate materials and manufacturing techniques adopted to the specified application of the machine However it should be noted that the wheel balancer must be operated in compliance with Jema Autolifte s recommendations It is required to perform tech...

Page 13: ... the power supply source and compressed air system The wheel balancer may be placed on any even stable and dry floor All the parts must be uniformly lit with the light sufficient to safely perform all the operational adjustment and maintenance operations mentioned in this manual Presence of any shaded areas light reflections and blinding light is inadmissible any situations which may cause eye str...

Page 14: ...nting the adapter it is necessary to clean thoroughly the cone areas of shaft 1 and adapter 2 with an oil wetted cloth Mount the adapter onto the shaft so as to maintain the position of markers 3 on the shaft rod and adapter as in fig 3 Tighten up the adapter to the shaft with the use of screw 4 CAUTION Careful cleaning of the cone areas and maintenance of the adapter position against the shaft ov...

Page 15: ... 046 W St 6 6 centring cone No 2 65 111 mm 06 04 047 W St 7 7 nut clamp 8 centring disc No 1 with double cone 125 145 mm 06 04 017 W St 5 9 centring disc No 2 with double cone 145 165 mm 06 04 009 W St 2 10 centring cone No 3 40 57 mm 06 04 046 W St 3 11 reduction ring of the adapter 12 centring disc No 4 with double cone 110 125 mm 06 04 008 W St 4 additional accessories ...

Page 16: ...lamp nut revolves against the nut body within the limits indicated by a notch in the body positions L and D In the L position LOOSE the nut may be freely moved along the threaded stud of the adapter In the D position CLAMP the nut may be screwed onto the threaded stud ...

Page 17: ...e s thumbs on the nut rod as in fig 6 move lugs to the right to the position CLAMP and tighten up the nut pressing the wheel towards the faceplate Tightening up the nut In order to remove the wheel from the adapter it is necessary as in fig 7 to move lugs to the left to the position LOOSE and loosen the nut halfway It will get loosened and may be removed from the stud and the wheel may be removed ...

Page 18: ...he inner side of the rim nut of adapter 4 should be with a clamp 7 see fig 4 and 11 the spring of the cone should be placed in such a way so that the smaller diameter of the springs supported against the cone base fig 10 2 use of cone 5 6 8 9 10 with centring from the outer side of the rim as in fig 8 and fig 9 nut without clamp adapter without spring ...

Page 19: ...shed onto the nut catch Electrical connection of the wheel balancer CAUTION Plug the feeder cable into the socket 230V 50Hz CAUTION SINCE UNEXPECTED WARMING OF FROZEN METAL AND PLASTIC SOLID GENERATES CONSIDERABLE QUANTITIES OF WATER VAPOUR CONDENSATE IT IS FORBIDDEN TO PLUG IN COOLED WHEEL BALANCER TO THE POWER NETWORK BEFORE THE LAPSE OF 2 TO 3 HOURS REQUIRED TO DRY THE ELECTRONIC ELEMENTS AND T...

Page 20: ...een displays symbol and the value of width recently entered to the memory By pressing button and it is possible to adjust this parameter every half an inch in a range between 2 and15 inches 5 1 2 Entry of DIAMETER parameter Press the button on the keyboard The indicator screen displays symbol and the value of diameter recently entered to the memory By pressing button or it is possible to adjust th...

Page 21: ...gramme Press ALU button on the keyboard In the indicator screen the pictogram will be set at the height of pictogram Suitable programme is selected by pressing buttons or option 1 balancing a wheel through clamping weights on both sides of a rim option 2 balancing a wheel through sticking weights rod of controller 1 ...

Page 22: ...ng a weight to the inner side of the correction plane and clamping another weight on the outer side of a rim option 5 static balancing with one weight for very thin rims not recommended for car wheels option 6 balancing a wheel through sticking weights inside a rim option 7 balancing a wheel through clamping one weight on the inner correction plane and the other weight inside a rim ...

Page 23: ...ess button Press button in order to read out the data previously saved in the memory For other memories the respective buttons should be used 5 1 7 Wheel balancer drive The wheel balancer has a manual shaft drive In order to bring up the wheel to proper speed level hold the ball of the adapter nut and spin the shaft in the direction of the arrow on the wheel balancer casing The wheel should reach ...

Page 24: ...ide of the operator and is completed by displaying the value of imbalance in the indicator screen The indicator screen displayed exemplary values of imbalance 15 g applicable to inner left correction plane 18 g applicable to outer right correction plane spinning the wheel slowly at each revolution one may hear sound signals slightly different from one another They occur in such wheel positions for...

Page 25: ...se when after a control measurement one gets a result of for example 6 g for the inner plane and 7 g for the outer one What to do next Case 1 The indicator displays value 0 It signifies that the wheel has been balanced with the accuracy up to 5 g since such a cut off threshold had been adopted By pressing button and setting the cut off threshold to 2 g it is possible to identify whether the wheel ...

Page 26: ...ce is exactly at the opposite side of the previously attached weight or it is slightly moved from this point the weight should be decreased 1 weight 2 new correction position If previously attached weight is below the new correction position it should be moved upwards 2 ...

Page 27: ...te If the indicator screen displays 0 no imbalance there are no signals regarding the position of imbalance no arrows It may occur that in subsequent measurements of the wheel imbalance with the cut off threshold set to e g 5 g the results will change as follows first measurement 0 second measurement 6 g third measurement 0 etc The results are not incorrect The imbalance is certainly close to the ...

Page 28: ...ants to know the real values of imbalances for this wheel without the necessity to perform another measurement it suffices to enter correct data to the machine s memory and press the button The wheel balancer will display correct values of imbalances 5 2 2 Hidden weight programme The hidden weight programme is used when the user wants the correction weight for the outer side of the wheel not to be...

Page 29: ...alance and arrows directed toward one another It is a position in which the correction weight of 18 g 20 g should be stuck 4 6 After sticking correction weights exit the programme 3P by pressing button STOP Initiate the measuring cycle and check if the wheel has been properly balanced CALIBRATION WITH THE CALIBRATION DEVICE The wheel balancer is equipped with a self calibration system enabling the...

Page 30: ...ll display symbol CAL Hold it until hearing a sound signal and displaying the following pictogram 4 Spin the shaft so as to reach the rotational speed of 125 rpm Calibration cycle starts when the shaft revolutions are brought up to speed of 125 rpm ...

Page 31: ...ory of the machine using suitable buttons on the keyboard Parameter DISTANCE should be entered by means of a controller being approached to the edge of the rim Set the cut off threshold to the lowest value i e 2 g It should be noted that parameters WIDTH DIAMETER DISTANCE and the balancing programme must comply with the parameters of the wheel used for calibration 2 Attach the weight of 80 g to an...

Page 32: ...ine 1 weight of high weight 2 position of imbalance If the centre hole in the rim is deformed e g as a result of faulty manufacturing such a wheel must be balanced in the adapter for wheels with a rim without a centre hole Such an adapter constitutes an additional accessory to the wheel balancer and can be delivered at the client s special request After completion of work switch off the power with...

Page 33: ...wheel balancer in good technical condition it is recommended to comply with the following instructions FAILURE TO APPLY THESE RECOMMENDATIONS SHALL ABSOLVE JEMA AUTOLIFTE FROM ANY LIABILITY STIPULATED IN THE GUARANTEE 1 Clean the wheel balancer at least once a month without using chemical cleaning agents and high pressure spray guns 2 Inspect the technical condition of the machine on a periodic ba...

Page 34: ...the law applicable in the country of the machine installation Fire protection This machine does not pose any fire hazard In every case the place in which the wheel balancer is installed must comply with the requirements of fire protection regulations applicable in the county of the machine installation It is required to keep one or more portable fire extinguishers within the operator s reach in th...

Page 35: ...on of the measuring cycle Damaged plate of the controller transoptors incorrectly mounted wheel Blow the transoptors with dry air Correct mounting of the wheel Unstable incorrect indications of the distance controller Damaged plate of the controller transoptors Blow the transoptors with dry air Incorrect operation of the guard Incorrect tension of the shock absorber belt spring Lubricate the belt ...

Page 36: ...fety machines applicable in the essential requirements and relevant conformity assessment procedures as well as on the essential requirements of the following directives Directive 2006 95 CE the low voltage Directive 2004 108 CE the electromagnetic compatibility For verification of conformity with the provisions of law were consulted the harmonized standards or other norms documents PN EN ISO 1210...

Page 37: ...ecting electronic components Part 1 3 Particular requirements for solders for electronic applications and solders with fluxes or without fluxes for soldering electronic components PN EN 61760 1 2006 Surface mounting technology Part 1 Method qualification standard components for surface mount SMD The technical documentation of this device referred to in point 1 of Annex VII A of the Machinery Direc...

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