Delay_System

9. 6. 7. 8. 3. 4. 5. 1. 2. 21 TYPES OF FAILURES The command unit does not work. The cylinder rods do not return/remain compres- sed. The cylinder rods are not blocked. The sheet is not properly formed. CAUSE The system is disconnected from the power source. The level of hydraulic fluid is insufficient (war- ning light of the control box is on). The oil temperature is too high (warning light of the control box is on). Obstacles, mechanical parts hinder the return. Pipes are misconnected. Quick couplings are not connected. The command unit does not pump any fluid. The blank holder is jammed. The press PLC or tool sensor signal is faulty. Pipes are misconnected. Presence of air inside the installation. The press PLC or tool sensor signal is faulty. The contrasting force is not correct. The blocking of the cylinder rods occurs at the wrong time. The quality/ductility of the raw material has changed. TROUBLESHOOTING SOLUTION Connect the Press to the electric power supply. Check whether the supplied tension is suitable. Fill up using suitable fluid (see “User’s and maintenance guide”). Check the air/oil exchanger. Make sure there are neither obstacles nor interruptions on the pipes which connect the cylinders to the unit. Remove the obstacle. Make sure that the connection is right. Connect properly. Check the command unit. Check the tool guide. Check the system logics. Make sure that the connection is right. Drain air out of the installation. Check the system logics. Adjust the response pressure of the pressure- reducing valve (max. 250 bar). Contact Special Springs’ customer service. The system is either over- or under-sized. Con- tact Special Springs’ customer service. Check the system logics. Adjust the response pressure of the pressure- reducing valve (do not exceed 250 bar). Contact Special Springs’ customer service.