4. Installation et montage - Kessel

8. Control of the septic system8. Control unit operation Display/indicator panel Movement keys / direction keys Enter key/OK key Back key/ESC key Pilot lamp indicating readiness for operation Pilot lamp for malfunction message Mains power supply cable Mains connection for compressor Connection compressed air sensor Connection optionsfor external signal generator Connection for valve block Connecting socket for floating contactMenu navigationThe control unit's menu navigation is subdivided into thesystem information as well as three different main menuitems. The background lighting is activated if one of thecontrol keys is pressed once.OK-key: Skip to the next higher levelESC-key: Skip to the next lower level▲ : Navigation innerhalb einer Ebene▼Alarmkey:The acoustic signal can be acknowledgedby pressing this key once.If the fault has been eliminated, the visualfault can also be acknowledged by pressingthe key once more. If the fault has not beeneliminated, the acoustic alarm is triggeredonce more when the alarm key is pressedagain.an acoustic and visual alarm. The acoustic alarm can beacknowledged by pressing the alarm key. Stand-by modeis maintained for at least 72 hours. Afterwards, the controlunit switches off automatically. If the mains connection isre-established within one hour, the program will automaticallycontinue with the last program phase. If that is notthe case, the device re-initialises itself when the mainsconnection returns. This can also be carried out manuallyby prolonged pressing of the alarm key.Note:Certain menus are password-protected. This serves toprotect the plant against inappropriate use.In case of a mains power failure, the plant is not ready foroperation. The control unit switches to stand-by mode(battery operation). This becomes noticeable by means of122