BUCHI DuMaster D-480 - Manual (Page 225)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 225
Filling the reduction tube
Proceed as follows:
 Furnish both plugs with 2 o-rings of Viton (green) each.
 Insert the bottom plug.
 Place the tube in the tube rack.
 Insert the wire mesh ronde.
 Fill in the corundum balls.
 The tungsten will be filled in portions by means of wire mesh spacers. Set the forming tool on the
reduction tube and insert the flat spacer into the recess of the tool.
 Press the spacer into the tube with the filling rod.
 Fill in a portion tungsten (approx. 20 g) by means of the dosing spoon.
 Repeat this procedure nine times.
 At the end insert one more spacer.
 Fill in the CuO.
 Fill in the copper.
 Insert the silver wool.
 Insert the plug at the top.
Notes regarding further operation
Please observe the following instructions:
 Working temperature: 815 °C.
 You can re-use any used silver wool if its surface is still shiny and silvery. If the silver wool has a
whitish matte surface, you cannot re-use it.