Sennheiser ADN D1 Instructions for Use - Page 24

Putting the conference system into operation Putting the conference system into operation Preparing the ADN CU1 central unit for use Setting up the central unit on a flat surface or mounting it into a rack If you want to place the central unit on a flat surface: ̈ Make sure that the air vents are not covered or blocked. ̈ Place the central unit on a flat surface as shown. If you want to mount the central unit into a 19" rack, the central unit must be supported and fixed to the rack using additional components. CAUTION Danger of material damage and personal injury when rack mounting the central unit! When installing the product in a closed or multi-rack assembly, please consider that, during operation, • the ambient temperature within the rack may drastically increase, • high mechanical loading may be exerted on e.g. the housings or cables, • intrinsically harmless leakage currents of the individual mains units may accumulate, thereby exceeding the allowable limit value. This can cause material damage and electric shocks. ̈ Always mount the central unit using a suitable rack tray. Make sure that the mechanical loading of the rack is even. ̈ Make sure that the ambient temperature within the rack does not exceed the permissible temperature limit specified in the specifications (see page 155). Ensure sufficient ventilation; if necessary, provide additional ventilation. ̈ Provide for a duct or vent space of 1 U above the ADN CU1 central unit to ensure that the heated air can dissipate. ̈ When connecting to the mains power supply, observe the information indicated on the type plate. Avoid circuit overloading. If necessary, provide overcurrent protection. ̈ Ground the rack via an additional ground connection. ADN Digital Conference System | 23