SAFETY PRECAUTIONS DURING OPERATION WARNING: Failure to follow these safety precautions may lead to a serious accident. PROHIBITED OPERATIONS Do not dig the work face under an overhang. This may cause the overhang to collapse and fall on top of the machine. Do not carry out deep digging under the front of the machine. The ground under the machine may collapse and cause the machine to fall. Take emergencies into consideration and set the travel motor at the rear and the track (undercarriage) at right angles to the road before digging to enable the machine to move back quickly.
If the ground under the machine col- lapses and there is no time to drive in reverse, do not sud- denly raise the arm and boom. In some cases, it may in fact be safer to lower the arm and boom. AA30709C Do not swing the work equipment to the side when it is carry- ing a heavy load. The stability to the side is less than the sta- bility to the front, so there is danger that the machine may turn over. Limits on use To prevent accidents caused by breakage of the work equip- ment or tipping over of the machine under excessive load, do not use the machine in excess of its capacity. Always be sure to keep within the maximum specified load and safe angle determined for the structure.
AA30710C PRECAUTIONS WHEN OPERATING Be careful not to approach too close to the edge of cliffs. Carry out only work that is specified as the purpose of the machine. Carrying out other operations will cause breakdowns. Specified operations see “WORK POSSIBLE USING HYDRAULIC EXCAVATORS” on page 138. Do the following to ensure good visibility. AE305810 When operating in dark places, turn on the working lamps and front lamps, and install lighting at the jobsite if neces- sary. Do not carry out operations in fog, mist, snow, or heavy rain, or other conditions where the visibility is poor. Wait for the weather to clear so that visibility is sufficient to carry out work.
Always do as follows to prevent the work equipment from hit- ting other objects. When operating in tunnels, under bridges, under electric wires, or other places where the height is limited, be extremely careful not to let the bucket, boom, or arm hit anything. 31