PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.15 HANDLING HIGH-PRESSURE PIPES q Do not bend high-pressure pipes or rub them with sharp or abrasive objects. Do not use any bent or cracked pipes or hoses that were previously rejected because of leaks or fastening defects, since they may burst during use. q Always repair or replace any loose or faulty fuel or oil pipe. Any leakage of fuel or oil may cause fires. 2.8.16 PRECAUTIONS TO BE TAKEN WHEN WORKING ON HIGH- PRESSURE SYSTEMS DANGEROUS!
q Do not forget that the work equipment circuits are always under pressure; for this reason, when it is necessary to add or drain hydraulic oil, or to service or inspect the hydraulic circuit, it is advisable to lower the equipment to the ground and completely release the pressure and also the residual pressure present in the tank. For this reason, always wear goggles and thick gloves during the inspections and use a piece of cardboard or a sheet of plywood to check for oil leakages. Small leakages from pipes under pressure and the resulting jets are extremely dangerous, since they can perforate the skin and get in the blood circulation or injure the eyes.
If you are struck by a jet of high-pressure oil or are injured, even if slightly, consult a doctor without delay. RWA01480 CORRECT RWA01580 2.8.17 PRECAUTIONS FOR MAINTENANCE WORK INVOLVING HIGH TEMPERATURES AND PRESSURES q When the machine is stopped at the end of operations, the engine coolant, the oil and all the components are hot and the hydraulic circuits are under pressure. In these conditions, if the coolant, the hydraulic oil or the engine oil are to be drained in order to change them or the filters, there are serious risks of injury and burns.
Wait for the temperature to lower within the normal operating range (40–45 °C) before carrying out the maintenance operations in accordance with the procedures indicated in the relevant sections of this manual. RWA00990 58