2012/01 - Kessel

3. Installation / Electrical Connections3.2 Cable connectionsThe cables for the sensor and the pumpshould be placed in a DN 50 conduit pipe.Also, if being used with the system, thecables for the remote alarm signalling deviceand the potential free contact shouldalso be run in the conduit. Connect to thecontrol unit the pump cable (illustration 6)and optical sensor (illustration 7) to themarked locations (see magnified photosbelow) – cables should be inserted andscrewed secure (tighten to a torque of 3Nm for the pump cable connection and 1Nm for the optical sensor connection. Thepressure sensor connection should behand tightened.Notice for cable protectionIf the cables are exposed they should beprotected against damage from rodents.The appropriate protective material is availablefrom KESSEL if required.Ill. 8Pump connection gap – approx 3 to 4 mmOptical sensor connection gap –approx 1 to 2 mm↕gapComplete connection illustrationIllustration 6 – Pump connection➀ ➁ ➃ ➄Illustration 7 – Optical sensor connection➀ power connection➁ pump connection➂ pump 2 connection (for Duo systems)➃ optical sensor connection➄ pressure sensor connection Ill. 935