Eliminating faults in a feeder which is running can cause serious accidents. ▲ Switch off the feeding system before every intervention and secure it against unintentional restarting (see Section 7.1). 1. Always switch off the feeders before carrying out repairs. 2. Check the equipment. 3. Please observe the error messages which are displayed on the connected control device or host computer. 4. Document faults and call the local service center (customer service see project manual).