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Make sure that the grounding of the SPD is as short and straight as possible with the specified wire size according to the technical data. Use a local equipotential bonding bar if possible. For proper operation the SPD must be connected to a low impedance ground. Remote Contact Signaling: In case of a device with remote contact CAN: Type 2 Component Assemblies signaling make sure that the torque is as indicated in the technical data. Problem Diagnostics: If there should be any problem please contact your local DEHN representative.