XCMG XE210C Operating & Maintenance Manual page 103

XE210C Hydraulic Excavator
Don't rotate the upper machine structure to the side to
g)
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.
Don't place the bucket lever on vertical position to operate the
i)
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.
Don't operate the knapper continuously for over 1 min., which
k)
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.
Operating and Maintenance Manual 103
Wrong
Correct
Wrong
Fig.1-110
Attention! (Watch
out, don't let
knapper bump into
moving arm)
Fig.1-111
Fig.1-112
Correct
Fig.1-113
Fig.1-114
Correct
Wrong
Wrong
Wrong