Komatsu Galeo PC800-8 Shop Manual page 260

SEN00386-03
2) Cut-off function
• If the load during operation increases and the
pump discharge pressure (P) rises to near the re-
lief pressure, pump controller lowers pump dis-
charge volume, to reduce the relief loss.
3) Cut-off cancel function
• The cut-off cancel function acts to stop the oper-
ation of the cut-off function in order to ensure the
pump flow when close to the relief pressure,
thereby preventing any drop in speed.
• Cut-off function and actuation of each switch
Switch
Function
Cut-off function
18
Working mode switch
P E
Cancel Actuated
10 Structure, function and maintenance standard
Travel lever
ON OFF
Cancel Actuated
Heavy lift
ON OFF
Cancel Actuated
PC800, 850-8