Well having er  carried this appliance nine flights of stairs to the ninth floor of the flat erm my objective was to gain entry  into the flat onsh , sorry once the okay was given  erm, again the objective was to gain entry into the flat as quickly and as quietly as possible  er, by my mistake the equipment was not placed one hundred percent correctly  and began to malfunction.  er  It started to make er a bit of a whirring noise, and a bit of a loud noise and again the objective was to gain entry quickly and quietly.