7. operating the multipress - Grass
7. operating the multipress - Grass
7. operating the multipress - Grass
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8. TROUBLE-SHOOTING AND CORRECTIVE ACTION8-103 The vertical feed speed cannot be adjustedPossible problems:- The non-return throttle valve (items 11 and / or 13 on <strong>the</strong> pneumatic wiring diagram) is defective.- The reversing valve (item 12 on <strong>the</strong> pneumatic wiring diagram) is defective.- The reversing valve (item 12 on <strong>the</strong> pneumatic wiring diagram) is not activated by <strong>the</strong> switch cam.In each of <strong>the</strong> above cases, a pneumatic technician or a <strong>Grass</strong> Service Center is to be contacted.8-104 The vertical bore head motor does not runPneumatic problems:- Is <strong>the</strong> insertion die arm swung up to <strong>the</strong> upper position? Check pneumatic position.- Remove <strong>the</strong> pneumatic hose “V” from <strong>the</strong> non-return throttle valve “11” on <strong>the</strong> switchgear cabinet(illustration 4-002-06) and check if <strong>the</strong> activated vertical bore head start button releases air to <strong>the</strong>pneumatic hose. If <strong>the</strong>re is no air, <strong>the</strong>n <strong>the</strong> problem lies with <strong>the</strong> pneumatic control.Electrical problems:- Is <strong>the</strong> machine plugged in?- Check <strong>the</strong> safety fuses in your factory electrical distribution panel. Replace fuse if necessary.- Is <strong>the</strong> main switch turned on?- Turn off <strong>the</strong> machine with <strong>the</strong> main switch. Open <strong>the</strong> switchgear cabinet with <strong>the</strong> corresponding key andpress <strong>the</strong> red button of <strong>the</strong> <strong>the</strong>rmal excess current release. Check <strong>the</strong> automatic safety switch. Close <strong>the</strong>switchgear cabinet.- Turn on <strong>the</strong> main switch.Mechanical problems:- Turn off <strong>the</strong> main switch. Check one of <strong>the</strong> threaded spindles on <strong>the</strong> drill gearbox to see if it canbe turned manually. This should turn <strong>the</strong> fan wheel in <strong>the</strong> electric motor. If not, <strong>the</strong> gearbox is mechanicallydamaged.- If <strong>the</strong> above tips do not help, please call in a pneumatic technician (see diagram, section 4-006) or alicensed electrician (see wiring diagram, section 4-007).The star in your cabinet93