. SAFETY PRECAUTIONS DURING OPERATION 2 - 19 PRECAUTIONS IN COLD AREAS Carry ou t the warming-up operation t machine is no t thoroughly warmed up before the control levers ar e operated, the r eaction of th e machine will be slow , and thi s may lead t o unexpected accidents If the bat tery electrolyte is frozen, do not c harge the battery or star t the engine with different ource. There is a hazard th at this will ignite t he battery a nd c ause t he batte ry to explode Before c harging or s tartin g the engine with a different power source, melt the battery electrolyte and check that there is n o leakage of electrolyte befo re starting.
Drain wa ter in the ai r tank If there is no sound of the air being rel eased when the service brake or parking brake are operated, check the air tank pres sure and r emove any snow or ice from around the brake v alve.