BUCHI DuMaster D-480 - Manual (Page 192)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 192
 Insert the new ash crucible into the combustion tube (4).
 Place the combustion tube connection (3) onto the combustion tube (4). The lance must extend
into the ash crucible approx. 5 - 10 mm.
 Place the ungreased seal on the combustion tube connection (3) at the top.
Furnace area
The following picture shows the details of the furnace area:
Legend:
1 Handle
2 Bayonet catch
3 Reduction tube connection
4 Post combustion tube connection
Phase 1: Installing the ash crucible (continued)
Proceed as follows:
 Push the furnace back:
 Lift the bayonet catch (2) slightly so as not to damage the seal on the combustion tube
connection.
 Close the bayonet catch by turning the bayonet catch handle (1) to the left.
 Close the ground-in clamp (3) on the reduction tube.
 Connect the post combustion tube with the two ground-in clamps again.
 Connect the O
2
supply tube with a ground-in clamp.
 Close the front door.
Phase 2: Follow-up work, gas pressure/ tightness
After completing all maintenance work, put the instrument back into a state ready for measurement.
See "Follow-up preparation of the instrument: Gas pressure / tightness" in Preparing and following
up maintenance work (on page 171).
To be observed after maintenance
If you have performed maintenance work that has a defined maintenance interval, you must manually
reset the "Status" field to zero on the "Maintenance intervals" dialog (accessible via Options >
Maintenance > Intervals. See Defining maintenance intervals in the software (on page 170).