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Fein GRIT GI 75, Manual, Page: 25 / 32

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Fein GRIT GI 75 Manual Download Page 25

GRIT by FEIN 

Alle Rechte bei FEIN, insbesondere für den Fall der Schutzrechtanmeldung.  
Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN. 

Sahre / MVK                                                      04 / 2009 
Hedensted / Grit                            

 1.  Loosen the 4 fixing nuts of the motor  
 2.  Take off the nuts and the brazen distance washers 
      and take off the motor from the machine housing. 
 3.  Loosen the 4 fixing screws and take off the  
      flange of the motor  

4.1.  Motor - dismounting 

 

Tools : 

 

Fork wrench 13 mm 
Iallen key 5 mm 

Summary of Contents for GRIT GI 75

Page 1: ...GRIT by FEIN Alle Rechte bei FEIN insbesondere für den Fall der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit GI 75 GI 75 2H ...

Page 2: ...VK 04 2009 Hedensted Grit GI 75 GI 75 2H Specifications Type GI 75 GI 75 2H Reference number 7 902 01 00 403 7 902 02 00 403 No load speed U min 3000 1500 3000 Power input kW 4 0 2 6 3 1 Voltage Volt 3 x 400 3 x 400 Frequency Hz 50 50 Grinding belt speed m s 30 15 30 Weight kg 65 65 Class of protection I I Belt dimension width lenght in mm 75 x 2000 75 x 2000 ...

Page 3: ...nd at least after having finished repair especially motor or switch it s important to test the turning direction of the motor without grinding belt mounted If the turning direction is wrong and working with grinding belt mounted it can cause accidents and damages of the belt grinder Furthermore you can t adjust a belt grinder correctly if the running direction is wrong Correct turning direction Sa...

Page 4: ... tested referring to VDE 701 part 1 as shown in the list below 1 protective earth conductor test Measuring points machine housing against PE on the plug Testing time 3 sec PE resistance max 0 3 Ohm with 5 m long mains power cable 2 Insulation resistance measurement Measuring points machine housing against L1 L2 L3 switch box must be open up see picture Testing time 3 sec Testing voltage 500 V DC I...

Page 5: ... 2009 Hedensted Grit Table of contents 1 Drive wheel 1 1 Drive wheel dismounting 1 2 Drive wheel mounting 1 3 Adjusting of grinding belt 2 Contact wheel 2 1 Contact wheel dismounting 3 Gas spring 3 1 Gas spring dismounting 3 2 Gas spring mounting 4 Motor 4 1 Motor dismounting 5 Switch box 5 1 Connection diagrams 5 2 Switch box dismounting 6 Most common spare parts ...

Page 6: ... fastened at the inner surfaces look at picture of the drive wheel and is causing an unbalance in the drive wheel Another reason for vibrations can be a broken hub on the inner site of the drive wheel It can caused by a failure in the aluminium casting process of the drive wheel In case of a heavy dust contamination the drive wheel has to be dismounted and checked from both sides If necessary the ...

Page 7: ... bei FEIN insbesondere für den Fall der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit Drive wheel Polyurethane Standard on GI 75 Machines 1 Drive wheel ...

Page 8: ...cult to adjust or steer you must check the surface of the drive wheel On a new drive wheel the surface is crowned left picture If crowning worn out or if irregular wearing of the surface has occurred the drive wheel must be replaced Depending on working intensity the endurance is very different It concerns drive wheels made of aluminiumn as well as drive wheels with polyurethane The wearing is per...

Page 9: ...er Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 Drive wheel The pictures on the left shows an irregular wear out on an unbalanced driving wheel because of a heavy grinding contamination ...

Page 10: ...rfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 1 Drive wheel dismounting 1 Open the side door and take it off 2 Loosen fixing screws of the cover for surface grinding table 3 Cover for surface grinding table must be taken off Tool Allen key 6 mm ...

Page 11: ...i FEIN Sahre MVK 04 2009 Hedensted Grit Tools Allen key 8 mm Fork wrench 24 mm Drive wheel puller 6 99 02 410 000 1 1 Drive wheel dismounting 1 Loosen the fixing screw of the drive wheel and take it off 2 Fasten the drive wheel puller onto the drive wheel and screw on the big hexagon head screw using a fork wrench M24 3 Take off the drive wheel ...

Page 12: ...n und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 2 Drive wheel mounting 1 Before the drive wheel will be mounted on the shaft must be lubricated 2 If it s difficult to put the driving wheel on by hand a rubber mallet can be used to move on the driving wheel with slightly hammer hits Tools Rubber mallet ...

Page 13: ... FEIN Alle Rechte bei FEIN insbesondere für den Fall der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 3 Adjusting of belt tracking ...

Page 14: ...Rechte bei FEIN insbesondere für den Fall der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit In the manual Original 1 3 Adjusting of belt tracking ...

Page 15: ...unning noiselees and without any resistance Vibrations in the contact wheel occurs if grinding dust takes place at the same spot if the polyurethane lining has come off if pieces of polyurethane are broken down partly or if the polyurethane has been burnt by red hot dust particles in a full spark box If the contact wheel runs in a condition as mentioned before the bearings will fail too Also the d...

Page 16: ...fügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 2 Contact wheel In case of changing the ball bearings it s possible to order a service kit that contents the two bearings different locking rings distance rings screws and shaft Order no 3 90 00 001 45 9 ...

Page 17: ...ntact wheel bracket has been set up from the factory If it s impossible to adjust the belt even after replacement of drive wheel contact wheel or gas spring it can be necessary to adjust the setting of the contact wheel bracket However this should only be done as the last possibility after checking all other settings belt tension drive wheel contact wheel and belt adjustment 2 Contact wheel ...

Page 18: ...ll der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 Loosen screws yellow arrows 2 Take off spark box and eye protection shield 3 Take off grinding belt 2 1 Contact wheel dismounting ...

Page 19: ...ügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 Loosen screw M10 allen key 8mm 2 Loosen screw M8 allen key 5mm 3 Take off contact wheel 4 Change the contact wheel and tighten the screws Tools Allen key 8 mm Allen key 5 mm 2 1 Contact wheel dismounting ...

Page 20: ... machine is started and switched off even if workpiece is pressed against the belt This will cause a wear out of the crowning on the drive wheel and creating also an unbalance After a while it will be impossible to hold the belt in the required tracking position Reduced functioning of a gas spring can be caused by contamination of grinding dust and therefore it is very important clean up the machi...

Page 21: ...ie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 Take off face grinding rest 2 Loosen the nuts for gas spring fixing fork wrench 13 mm 3 Loosen the nut on the spanner fork wrench 19 mm 4 Take off the holder and the gas spring Tools Fork wrench 13 and 19 mm 3 1 Gas spring dismounting ...

Page 22: ...den Fall der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 3 2 Gas spring mounting By mounting the gas spring you must be aware of keeping the correct position of the gas spring ...

Page 23: ...r is totally sealed the wear of the motor caused by external forces is rather minimal The most common wear out is detected on the ball bearings The wear out can happen when the drive wheel is unbalanced no maintenance on the drive wheel The risk of a motor failure is minimal and only possible if a failure happen during the winding process or if the motor gets overloaded In case of worn out ball be...

Page 24: ...erfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit In case of defect ball bearings it is possible to order a service kit which contents the two ball bearings a crinkled spring washer and two rubber seals look at foto Order no 3 90 00 001 656 4 Motor ...

Page 25: ... Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 Loosen the 4 fixing nuts of the motor 2 Take off the nuts and the brazen distance washers and take off the motor from the machine housing 3 Loosen the 4 fixing screws and take off the flange of the motor 4 1 Motor dismounting Tools Fork wrench 13 mm Iallen key 5 mm ...

Page 26: ...und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 5 Switch box In case of a defect switch or a defect speed switch the whole switch box including cable and CEE plug must be replaced The components like under voltage relay or switch are not available separately Standard delivery GI 75 2H Standard delivery GI 75 ...

Page 27: ...de Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 5 Switch box In case of a damaged power cable it s possible to get a new power cable with CEE plug as a spare part Order no 3 90 00 001 70 1 3 x 400 Volt Order no 3 90 00 004 495 3 x 220 Volt ...

Page 28: ...T by FEIN Alle Rechte bei FEIN insbesondere für den Fall der Schutzrechtanmeldung Jede Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 5 1 Connection diagram ...

Page 29: ...ügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 5 2 Switch box dismounting Example GI 75 2H 1 Loosen the 4 screws in the front panel of the switch box and take it off 2 Loosen the 4 screws in the bottom of the switch box Tools Crosshead screw driver PH2 ...

Page 30: ... und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit 1 Loosen the connection wires from the switch box on the terminal block 2 Loosen the earth contact where it s connected to the motor housing 3 Remove the switch box Tools Fork wrenh 6 mm Cross head screw driver PH2 5 2 Switch box dismounting Example GI 75 2H ...

Page 31: ... Verfügungsbefugnis wie Kopieren und Weitergabe liegt bei FEIN Sahre MVK 04 2009 Hedensted Grit Important when disconnecting the wires from the terminal block be aware of the order of the different colours of the wires Make a note or make a photo 5 2 Switch box dismounting Example GI 75 2H ...

Page 32: ...90 00 000 172 GI 75 Switch box 3 90 00 000 174 GI 75 2V Switch box 3 90 00 000 173 GI 75 2H Switch box 3 90 00 000 175 GI 75 2H2V Cable with CEE plug 3 90 00 001 701 3 x 400 V Cable with CEE plug 3 90 00 004 495 3 x 220 V Emergency push button 3 90 00 000 479 Motor 3 90 00 000 156 GI 75 GI 75 2V Motor 3 90 00 000 176 GI 75 2H Motor 3 90 00 000 177 GI 75 2H2V Service Kit for contact wheel 3 90 00 0...

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