AEG Protect B. 750 PRO Operating Instructions Manual

31ENFinally, check the firm seating of the wire jumpers attached in theEmergency Power Off plug and tighten the two external screwsof the plug part (see also Page 26 Item 10).If you would like to use the emergency switch-off function,continue with Section 8.4 on Page 41.The integrated Emergency Power Off mechanism isused solely to switch off the UPS power. This isdone electronically and does not correspond to anEMERGENCY-STOP device as per DIN EN ISO 13850.7 Operation and Control7.1 Initial commissioningPlug the safety plug of the mains connection cable into theintended, properly fuse-protected safety socket. The UPS isautomatically supplied with power from the public mains. TheUPS starts up in the initialisation phase. All pictograms and LEDsof the liquid crystal display light up briefly.If an error indication is received, analyse the displayusing the overview in Chapter 9, starting on Page43. If the battery system is not recognised, forexample, go back to Chapter 6, starting on Page 28.The ex-works presetting of the rated output voltage is 230 V. Thechanging of this parameter is described in Section 7.4 on Page 38.7.1.1 Switching ON the UPSIf the UPS is in the so-called standby mode (e.g. after theprocedures described above), press and hold the "ON/MUTE"button (for about 3 seconds) until the "ON" message flashes atthe top right of the display. The UPS carries out a brief self-testand begins normal operation after a few seconds. The displayswitches to the UPS status display. The "OK" message appearsat the top right.Now switch on your electrical loads one after another. The deviceload of the UPS should not exceed the specified rated load of thei