OPTISWITCH 3300 C with contacless electronic switch - Fagerberg

Maintenance and fault rectification7 Maintenance and fault rectification7.1 MaintenanceWhen used as directed in normal operation, OPTISWITCH3300 C is completely maintenance-free.7.2 Fault rectificationChecking the switching signal? OPTISWITCH 3300 C signals "covered" when the vibratingelement is not submerged (overfill protection)? OPTISWITCH 3300 C signals "uncovered" when thevibrating element is submerged (dry run protection)lSupply voltage too lowà Check the power supplylElectronics defectiveà Push the mode switch (min./max.). If the instrumentthen changes the mode, the instrument may bemechanically damaged. Should the switching functionin the correct mode still be faulty, return the instrumentfor repair.à Push the mode switch. If the instrument then does notchange the mode, the oscillator may be defective.Exchange the oscillator.à Check if there is buildup on the vibrating element, and ifso, remove it.lUnfavourable installation locationà Mount the instrument at a location in the vessel whereno dead zones or mounds can form.à Check if the vibrating element is covered by buildup onthe socket.lWrong mode selectedà Set the correct mode on the mode switch (max: overfillprotection; min: dry run protection). Wiring should becarried out acc. to the quiescent current principle.24 OPTISWITCH 3300 C - with contactless electronic switch29960-EN-060112