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b) Forbid empty hitting
Once the rock hit, immediately stop ,because
the continuous empty-hitting not only can damage the drill
rod and flat sales, but also damage to the mechanical load,
when rod position is incorrect or when used it-as a lever occ
urs runaway. (Percussion sounds will change when runaway)
c) Forbid to push rock
Forbid using side wall of quartering hammer to push rock,
because this is the main factor of damage bolt of quartering
hammer ,drill.
d) Do not take drill shank as crowbar
When take drill shank as crowbar, bolt and drill shankwill be
damaged.
e) Do not continue to beat over 1 minute
When Quartering hammer continue to hit over 1 minute,
rock still not be crushed, please replace hitting point and
continue to hit, continue to hit at the same place will quickly
wear drill shank.
f) Please from edge to crush big and hard rock.
From crack or edge begin to hit ,big and hard rock is easy to
be crushed.
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