XE210C Hydraulic Excavator Operating and Maintenance Manual 103
g) Don’t rotate the upper machine structure to the side to
operate the knapper. This action will make the machine
unstable and even shorten the lifespan of lower machine
parts.
h) Operate the hydraulic excavator carefully and prevent the
knapper from bumping into moving arm.
i) Don’t place the bucket lever on vertical position to operate the
knapper, which may lead to the excessive vibration of
hydraulic cylinder of bucket lever and even the oil leakage.
j) Press down the knapper and place the hammer head(axial
center)vertically on object and push it in.
k) Don’t operate the knapper continuously for over 1 min., which
may cause the excessive abrasion of hammer’s head. If the
object can’t be shattered in 1 min., place the hammer’s head to
other positions, every change of which should not exceed 1
min.
Attention! (Watch
out, don’t let
knapper bump into
moving arm)
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