11SecuringSecuring the overhead stirrer to the standDiagram (see Fig. 3)Place RW 47 digital overhead stirrer on the arm ofthe stand. Fasten the overhead stirrer to the standfrom below with hexagonal socket screws supplied.The help of an assistant is needed for screwing onthe overhead stirrer. The cable clips included in thedelivery package are required for fixing the powercable of the unit (see Fig. 6 and Fig. 7).Check that the stirrer is held in position firmly prior toeach use and also at regular intervals. The position ofthe stirrer must only be adjusted when the equipmentis stationary and the power supply is disconnected.Securing the stirring element using the chuckDiagram (see Fig. 4)Slide the stirring element (I) into the chuck (H).Tighten the chuck firmly using the chuck key (G).The stirring tool must only be changed when theequipment is stationary and the power supply isdisconnected.Securing the stirring shaft protectorDiagram (see Fig. 5)You must use stirring shaft protector (K), e.g. R 301,when working to prevent injury. Use the bolts (J) toattach the plastic half-shell pieces to the stirrer (M),as shown in Fig. 5. The screw (L) can be used toadjust the length of the stirring shaft protector.Check that the stirring shaft protector is held in posi-tion securely prior to each use and also at regularintervals. The position of the stirring shaft protectormust only be adjusted when the equipment is sta-tionary and the power supply is disconnected.Securing the safety switch to R 472 floor standDiagram (see Fig. 6)There is a danger of trapping between thesafety limit switch, switch contacts and theend stop!Secure the safety switch SI 400 safety switch tothe support rod of R 472 floor stand via fixing de-vice SI 472. For this, follow the assembly instruc-tions for “Safety switch” in the Fig. 6.Securing the safety switch to R 474 tele-scopic standDiagram (see Fig. 7)There is a danger of trapping between thesafety limit switch, switch contacts and theend stop!Mount the safety switch SI 400 safety switch tothe support rod of R 474 telescopic stand via fix-ing device SI 474. For this, follow the assemblyinstructions for “Safety switch” in the Fig. 7.If above conditions aremet, the instrument isready for operation afterplugging in the mains plug.Points of particular danger (such as crushing, rotat-ing parts, clamping screws for stand legs and roll-ers etc.) are marked in Fig. 8 with an exclamationmark. Please pay particular attention to these dangerpoints during operation!Switching on the instrumentCheck whether the voltage given on the type platecorresponds to the available mains voltage.The socket used must beearthed (fitted with earthcontact).If these conditions have been met, the machine isready to operate when the mains plug is plugged in.If these conditions are not met, safe operation is notguaranteed and the machine could be damaged.When working with safety switch SI 400, the in-strument only starts up once it has been set to thedesignated working height and the switch contactactivates the safety switch.