Komatsu WA320-5H Operation & Maintenance Manual page 92

OPERATION
E.C.S.S. SWITCH
(Option)
q If the machine is traveling or the work equipment is raised, the moment the E.C.S.S. switch is turned
ON, the work equipment will move.
q If the E.C.S.S. system is switched on, the work equipment may move.
q Never turn the E.C.S.S. switch ON during inspection or maintenance. The work equipment will move
and this will create a dangerous situation.
q Always stop the machine and lower the work equipment to the ground before operating the E.C.S.S.
NOTICE
switch.
q When carrying out inspection and maintenance, first lower the work equipment to the ground, then
turn the E.C.S.S. switch OFF before starting the inspection and maintenance operation.
q When carrying out leveling work, turn the E.C.S.S. switch OFF.
The E.C.S.S. is a device that uses the hydraulic spring effect of an accumulator to absorb the vibration of the chas-
sis during travel and allows the machine to travel smoothly and at high speed.
This switch (7) is used to turn the E.C.S.S. ON and OFF.
Position (a): ON
The pilot lamp (A) lights up and the E.C.S.S. is
actuated.
Position (b): OFF
The E.C.S.S. is not actuated.
REMARK
The travel damper is automatically actuated when the travel speed becomes more than 6 km/h (3.7 MPH); when
the travel speed goes below 5 km/h (3.1 MPH) it is automatically disengaged (when 20.5-25 tires are used).
WARNING
EXPLANATION OF COMPONENTS
3-33