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SECTION 9: MAINTENANCE
9.1 General
9.1.1 Apply alight costing of oil to the lifting screw, anvil and other moving surfaces of the tester.
9.1.2 Turn off power after finishing.
9.1.3 Turn the hand-wheel in counter-clockwise direction to lower it away from indenter.
9.1.4 When the tester is not in use cover with a dust cover.
9.1.5 If the tester has not been used for a long period, allow the unit to warm up several
minute to ensure the apparatus accuracy
.
9.2 Adjustment of the Tester
The instrument has been comprehensively tested at the factory to conform to all technical
requirements and standards. However, some variation may be caused by transportation,
disassembly or voltage difference etc., therefore the user may need to make the following
adjustments:
9.2.1 The surface of specimen and the indenter may need to be cleaned of any oil or dust. Use
IPA or ethanol to clean specimen and indenter.
9.2.2 If the tester has been moved or not used for some time, make several indents at a test
load of 29400N(3000kgf) to eliminate gaps between different parts and to insure proper
function of electronic components.
9.2.3 Electrostatic interference can affect the Loading/unloading sensor. Place tester in an
area that is free from strong electromagnetic interferences. If the unit needs to be reset after
the load has been applied and a reading cannot be obtained:
