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ALTANA Heavy-Duty Impact Tester User Manual

Page 9

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¬ HOLE¬IN¬THE¬WEIGHT¬4HE¬WEIGHT¬MUST¬BE¬INSERTED¬¬
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¬ THE¬WEIGHT¬TO¬COME¬TO¬REST¬ON¬THE¬PUNCH¬

¬ 0LACE¬A¬SPECIMEN¬ON¬THE¬ANVIL¬2EST¬THE¬PUNCH¬¬
¬ ON¬THE¬SPECIMEN¬AND¬THE¬WEIGHT¬ON¬THE¬PUNCH¬¬
¬ ,OOSEN¬THE¬GUIDE¬TUBE¬AND¬ADJUST¬IT¬UP¬OR¬DOWN¬¬
¬ TO¬MAKE¬THE¬LIFTING¬SCREW¬PROTRUDE¬THROUGH¬¬
¬ THE¬TUBE¬SLOT¬AT¬THE¬ZERO¬MARK¬4HIS¬ADJUSTMENT¬¬
¬ CALIBRATES¬THE¬INSTRUMENT¬AND¬MINIMIZES¬THE¬¬
¬ CHANCES¬THAT¬THE¬LIFTING¬SCREW¬WILL¬STRIKE¬THE¬¬
¬ BOTTOM¬END¬OF¬THE¬TUBE¬SLOT¬4HE¬LIFTING¬SCREW¬¬
¬ MAY¬STILL¬STRIKE¬THE¬BOTTOM¬OF¬THE¬SLOT¬IF¬SUFlCIENT¬¬
¬ IMPACT¬IS¬USED¬TO¬CAUSE¬THE¬PUNCH¬TO¬¬
¬ COMPLETELY¬PENETRATE¬THE¬SPECIMEN¬

¬ 3INCE¬THIS¬CONDITION¬CAN¬ALSO¬LEAD¬TO¬PREMATURE¬¬
¬ FAILURE¬OF¬OTHER¬MAJOR¬COMPONENTS¬CARE¬SHOULD¬¬
¬ BE¬TAKEN¬TO¬DESIGN¬A¬TEST¬SO¬COMPLETE¬¬
¬ PENETRATION¬IS¬THE¬EXCEPTION¬RATHER¬THAN¬THE¬RULE¬

¬¬'ENTLY¬TIGHTEN¬THE¬SET¬SCREW¬TO¬SECURE¬THE¬TUBE¬¬
¬ INTO¬THIS¬POSITION

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