Counterweight Removal/Install Device Alarm - Hitachi ZAXIS 470LC-5B Operator's Manual

Counterweight Removal/Install Device Alarm

When oil pressure in the counterweight removal/install
device cylinder increases, an alarm sounds continuously and
background of icon (2) turns red on the monitor.
Icon indicates warning situation.
(Red background)
IMPORTANT:
 Do not operate the machine if the buzzer sounds
when the counterweight is fully installed. Failure to
follow direction may cause serious damage to the
counterweight removal/install device. If the buzzer
sounds, immediately check and ensure the stop
valve is fully closed and the lifting yoke is in the REST
position by operating the counterweight removal/
install operation lever. Refer to counterweight
removal/install sections for information on
counterweight operation.
 If the buzzer sounds while the counterweight is
removed and the remove and install arm is in the
up position, fully close the stop valve and lower
the counterweight removal/install device until the
clearance (C) between the device and the machine
frame becomes approximately 100 mm by operating
the counterweight removal/install operation lever.
After that, be sure to fully open the stop valve.
OPERATOR'S STATION
2
Lifting Yoke REST Position
C
Inside Pump Compartment Door
2
MJAA-NACW1-003
Lifting Yoke
MJAA-NACW1-017
MJAA-NACW1-009
Counterweight
Removal/Install
Operation Lever
Stop Valve
MJAA-NACW1-013