Pressing tool and pressing process for extruding press fittings

A method of activating a pressing tool, the pressing tool having a transmission device for actuating a pressing jaw, the pressing jaw interchangeably connecting on the pressing tool with a fastening pin, the method comprising the steps of:

• (a) electronically detecting for the presence of the pressing jaw on the pressing tool;
• (b) repeating step (a) if the presence of the pressing jaw is not detected in step (a), whereby steps (a) and (b) are repeated up to a first time delay at which point the pressing tool is shut off,
• (c) electronically detecting for the presence of the fastening pin in the hole of the pressing tool if the presence of the pressing jaw is detected in step (a);
• (d) repeating step (c) if the presence of the fastening pin is not detected in step (c), whereby steps (c) and (d) are repeated up to a second time delay at which point steps (f) or (g) are performed;
• (e) electronically enabling the transmission device to actuate the pressing jaw if the presence of the pressing jaw is detected in step (a) and the presence of the fastening pin is detected in step (c);
• (f) returning to step (a) if a predetermined maximum on-time without enabling the transmission device in step (e) has not been reached;
• and
• (g) electronically switching off the pressing tool if the predetermined maximum on-time without enabling the transmission device in step (e) has been reached.