SANY LATIN AMERICA
4-189
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
Operation
●
About 3 second after all control levers are
neutralized, engine speed will drop to the
fi
rst deceleration level about 100 rpm lower
than the set speed. After another 3 sec-
onds engine speed enters low speed (1400
rpm) to reduce the loss of the hydraulic
system and engine wear, and reduce fuel
consumption and noise. When the control
lever is operated again, the engine speed
rises instantly to the previous level.
●
If any control lever is operated while the
engine speed is kept at decelerated level,
engine speed will rise instantly to the level
set by the fuel control dial.
Function
●
If all the control levers are neutralized, en-
gine speed will drop to the medium level
automatically to reduce fuel consumption
and noise.
●
If any of the levers is operated, the engine
speed rises to the set level instantly.
ZX215-1002206
3s
(1350rpm)
Drop
100rpm
Control lever
Operated
Unoperated
Operated
Set rpm
Time (s)
less than 2 S
Deceleration
Less than 1 S
Speed (rpm)
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