Operating Instructions & Parts Manual
Page 9
Troubleshooting Chart
Incorrect hardness measurement
1. Contaminants effecting
measurement
2. Elevation screw cover is interfering
with specimen, anvil or elevation
screw.
3. Indentor is damaged.
1. Be sure the anvil, top of elevation
screw, threaded collar, indentor and
specimen are all clean and free of oil,
grease, dirt, shavings, debris, etc.
2. Be sure elevation screw cover and
top is clean and free of any dirt, oil,
grease, etc. Position cover properly
on the elevation screw well below
the anvil.
3. Inspect indentor for damage, replace
diamond indentor if chipped or
broken, replace 1/16" steel ball if
deformed or damaged.
4. Refill dash pot, see Maintenance,
above.
When using the test block, a different
hardness is measured at different
locations on the block.
1. Burrs on bottom of test block.
2.
Air trapped under test block.
1. Use oil sharpening stone to remove
burrs.
2. When testing different locations on a
test block, slide test block on anvil,
maintaining contact between anvil
and block.
Dial indicator needle rotates too fast at
start of test
1. Dash pot is low on oil.
1. Refill dash pot
See Maintenance, above.
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