ETHERLINK II - Repeater ManualPage 92 of 1066 SERVICE INSTRUCTIONS6.1 General requirements Before unpacking, check if the packing box is intact and if the equipment model isconsistent with that specified in the purchase contract. Before starting operating the device, read carefully the present technical description andservice instructions. Remember that the guarantee and the free-of-charge repair will not begranted under the following conditions:a) if the device or any of its parts fails due to improper installation, testing or operation.b) damages resulting from:1) misuse and improper installation, including but not limited to:- to use the product for its normal purpose or in accordance with the instructions on theproper use and maintenance,- installation and use of the product in a manner inconsistent with technical or safety in forcein the country where it is used, as well as the connection of the device to the power supplysource, other than required by the technical or safety standards,2) maintenance or repair performed by unauthorized service centers and dealers;3) operation of a malfunctioning device;4) accidents, lightning strokes, flooding, water, fire, improper ventilation, voltage drops, ingressof moisture and insects inside the equipment as well as other reasons, for example,electromagnetic and other interferences which are beyond the Supplier control and do notcorrespond to technical conditions;5) transportation except for the cases, when shipping is performed by an authorized dealer or aservice center;7) defects of the system into which this product is incorporated. The equipment should be powered from a primary DC source (38 … 72 V) with thegrounded “+”. Environment requirements:Temperature: from -5 to +45 °C;Relative air humidity: from 5% to 85% at +25 °C. It is strictly prohibited:a) to alter, delete, remove or make illegible the serial number of the device;b) to adapt, adjust and change the equipment in order to improve it or extend itsapplications without the prior written consent of the Supplier;c) to alter or adjust the equipment without the consent of the Supplier.