WARNING: For reasons of safety, always follow these safety precautions. SAFETY If the travel damper switch is turned ON when the machine is traveling or when the work equipment is raised, the hydraulic accumulator in the travel damper will instantaneously be connected with the lift cylinder bottom circuit. Be careful when doing this, because the oil then will flow in or out in the direction to balance the oil pressure at the accumulator and lift cylinder bottom , so the work equipment will move. When releasing the pressure or charging with gas for the work equipment circuit of machines equipped with an accumulator, be careful to follow the instructions given for handling the accumulator.
Method of releasing the pressure or charging with gas. The accumulator is charged with high-pressure nitrogen gas, which is extremely dangerous, so heed the following advice and handle the accumulator carefully. Do not make any holes in the accumulator. Keep flames and heat away from the accumulator. Do not weld anything (such as bosses) to the accumulator. Gas must be released from an accumulator before it can be discarded; consult your Komatsu America International Distributor. Be sure to provide adequate ventilation to prevent gas poisoning. If it is necessary to start the engine, or handle fuel, flushing oil or paint within an enclosed or poorly ventilated area, open doors and windows.
Operate fans or similar devices to circulate air if opening doors and windows fails to provide sufficient ventilation. Remove all dirt from the surface of the windows and lights to ensure good visibility. Adjust the side mirror so you can see clearly from the operator’s seat, and always keep the surface of the mirror clean. Replace broken glass with a new replacement part(s). Check that all head lamps and working lamps operate properly. WA450-3MC 1-8 PRECAUTIONS WHEN HANDLING ACCUMULATOR VENTILATION FOR ENCLOSED AREAS PRECAUTIONS FOR MIRRORS, WINDOWS AND LIGHTS