9-27 
9.18  
Diagram for hydraulic system (only for SHARP-RD1600)
P1:The pressure set to 38 bar. 
Hydraulic of unload equipment 
The operated pressure requires 38bar. When the pressure s
stem can be 
maintained to 38bar. But pipe has clo
, furthermore h
draulic of pressure 
continue to rise. To further ensure safet
, the unloadin
 valve(part 3.) is 
employed to unload the motion if the pressure is over the setting of 40bar.