6. GENERAL PRECAUTIONS ¤ WARNING: Failure to follow these safety precautions may lead to a serious accident. 1-7 MACHINES WITH ACCUMULATOR On machines equipped with an accumulator, for a short time after the engine is stopped, if the work equipment control lever is moved to the LOWER position, the work equipment will move down under its own weight. After stopping the engine, always place the safety lock in the LOCK position. When releasing the pressure inside the work equipment circuit on machines equipped with an accumulator, follow the procedure given in the inspection and maintenance section. Method of releasing pressure © See “11.14 HANDLING ACCUMULATOR”.
The accumulator is filled with high-pressure nitrogen gas, and it is extremely dangerous if it is handled in the wrong way. Always observe the following precautions. ‡ Never make any hole in the accumulator or expose it to flame or fire. ‡ Do not weld any boss to the accumulator. ‡ When carrying out disassembly or maintenance of the accumulator, or when disposing of the accumulator, it is necessary to release the gas from the accumulator. A special air bleed valve is necessary for this operation, so please contact your Komatsu distributor. Gas in accumulator © See “11.14 HANDLING ACCUMULATOR”. VENTILATION FOR ENCLOSED AREAS Exhaust fumes from the engine can kill.
‡ If it is necessary to start the engine within an enclosed area, or you handle fuel, flushing oil, or paint, open the doors and windows to ensure that you provide adequate ventilation to prevent gas poisoning. ‡ If opening the doors and windows still does not provide adequate ventilation, set up fans. A0055060