¤ WARNING: For reasons of safety, always follow these safety precautions. 7. PRECAUTIONS DURING OPERATION 1-20 PRECAUTIONS IN COLD WEATHER ‡ After completing operations, remove any drops of water, snow, or mud stuck to the wiring harnesses, connector 1, switches, or sensors, and cover these parts. If drops of water get in and freeze, the machine may malfunction when it is next used, and this may lead to an unexpected accident. ‡ Carry out the warming-up operations thoroughly. If the control levers are operated before the machine is fully warmed up, the response of the machine will be slow, and this may lead to an unexpected accident.
‡ Operate the control levers to relieve the hydraulic pressure (raise the pressure to above the set pressure of the hydraulic circuit and relieve the pressure oil to the hydraulic tank) to warm up the oil in the hydraulic circuit. This improves the response of the machine and prevents mistaken operation. ‡ If the battery electrolyte is frozen, do not charge the battery or start the engine with power from another source. There is danger that the battery may catch fire. When charging the battery or starting with power from another source, let the battery electrolyte melt and check that there is no leakage of battery electrolyte before starting the operation.
Battery charge ratio © See “14.1.3 BATTERY”. ‡ In cold weather, do not touch metal surfaces with your bare hands. If you touch a metal surface in extremely cold weather, your skin may freeze to the metal surface. NEVER LET ANYONE RIDE ON ATTACHMENT Never let anyone ride on any work attachment, such as the bucket, crusher, grapple, or clamshell (grab bucket). There is danger of the person falling and suffering serious injury.