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6. START-UP AND OPERATION
6.1 Preparatory work
6.1.1 The surface of the specimen must be clean. Remove dirt, corrosion or oxide coatings and
avoid making the indent into any imperfections such as pits or porosity in the surface.
6.1.2 The minimum thickness of the specimen should be >10 times the depth of the
indentation. If there is visual deformation on the back of specimen after testing the load
is too high.
6.1.3 The specimen should be stable on the testing table and should be stationary during the
testing procedure. The test force must also be vertically applied on the specimen.
6.2 Usage of the instrument
6.2.1 Install the indenter into main shaft hole and align the flat edge towards the screw and
then tighten.
6.2.2 Turn on the power switch, the panel display window will count down. When the display
window shows “test force” of zero, the instrument automatically adjusts to the starting
position.
6.2.3 When starting up, the default test force is set to 2452N (250kg), the dwell time is set to 15
seconds. If you want to change the test force or dwell time, refer to Section 4.
6.2.4 When preparatory work is finished, place the specimen evenly on the testing table. Press
“CLR” to set zero and rotate the wheel to raise the anvil table. Continue rotating the
wheel until the specimen touches the indenter, and the window begins to display test
force.
NOTE: For 62.5kg~250kg forces (red LED lights), rotate the wheel to make the window display
about 30kg;
For 500kg~3000kg (green LED lights), rotate the wheel to make the window display
about 90kg.
