Delay_System

8 10 1 2 3 4 4 5 6 7 8 9 12 11 11 10 5 6 7 8 9 12 11 11 3 2 1 4 4 ��������������� ��������������� ����������� ��������� ��������� ��� �������������������� ��� �������� ��� �������������������� �������������� PHASE-BY-PHASE SYSTEM DESCRIPTION Phase 1 The Ram of the press 1 is at TDC, the cylinder rods 2 are completely extended, the retention valves 4 and the pressure-reducing valve 6 stand idle. All the fluid pumped by the command unit 12 flows through the circuit of the air-oil exchanger 7 , which switches on and off automatically – thanks to a pre-set thermostat – in order to maintain the fluid at constant temperature. The cylinders with controlled return are completely full of fluid. During this phase, the system does not produce any contrasting force. For easier understanding, the following illustrations include a single cylinder with controlled return connected to a command unit. In reality, installations are made up of any number of cylinders according to practical requirements. It will be the responsibility of Special Springs’ technical office to determine, after consultation with the end user, what type of com- mand unit is suitable for any specific installation.