OPTIONS, ATTACHMENTS 29.2 METHOD OF OPERATING ECSS The ECSS switch is on the left side of the panel. Pressing the ECSS switch turns on ECCS and the pilot lamp (orange) lights up. Pressing the switch again turns off the pilot lamp and the ECSS is canceled. It is possible to perform this operation with the ECSS switch ON. If the damper is kept ON during operations, and the hydraulic pressure in the circuit at the bottom end of the lift cylinder exceeds 150 kg/cmІ (2,130 psi) during operations, the solenoid valves are automatically closed, and the ECSS is canceled to protect the hydraulic accumulator from high pressure.
29.3 PRECAUTIONS WHEN OPERATING ECSS SWITCH WARNING Turning the ECSS switch ON while the machine is traveling or when the work equipment is raised connects the hydraulic ECCS accumulator to the bottom of the lift cylinder. Oil then enters or leaves the hydraulic accumulator in the direction to maintain the balance. The work equipment will move, so be extremely careful when operating the switch. If operations are performed with the ECSS switch ON, and the hydraulic accumulator is automatically switched by the action of the pressure switches during operation, the work equipment could immediately move. Never perform an inspection and maintenance with the ECSS switch ON.
This situation is extremely dangerous, as the work equipment could move. Always stop the machine and lower the equipment to the ground before operating the ECSS switch. When performing an inspection and maintenance, also lower the work equipment to the ground. Turn the ECSS switch OFF before starting the maintenance operation. REMARKS If the ECSS switch is at the ON position and the starting switch is at the OFF position, the ECSS will not work. However, if the starting switch is at the ON position, the ECSS can be actuated. ECSS is not actuated if the transmission is in 1st gear, and speed is slower than 5 km/h (3.1 mph).
ECCS is actuated when the transmission is in 2nd to 4th gear, and the accumulator pressure is switched to two levels in accordance with the load to absorb the chassis vibration effectively. WA450-3MC 5-8