BUCHI DuMaster D-480 - Manual (Page 171)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 171
Status view message
If the maximum number of measurements is reached for a maintenance event:
 the due maintenance event is displayed in the status view in the "Maintenance" field
 the background of the "Maintenance" field turns red
 a wrench flashes.
The following screenshot shows the status view message:
To be observed after maintenance
If you have performed the due maintenance you must manually reset the "Status" field to zero for the
respective event.
Installing used tubes
Note
When you install an used tube, and if a maintenance event has been defined for this maintenance
work, you must increment the interval counter in the "Maintenance intervals" dialog accordingly. See
Defining maintenance intervals in the software (on page 170).
Preparing and following up maintenance work
Why prepare and follow up maintenance work?
In order to perform maintenance work it is necessary to make certain preparations so as to avoid risks
for the user. This also prevents the instrument from sending an error message and shutting down
automatically. It is also necessary to perform follow-up work after maintenance in order to get the
instrument ready to measure again.
Decision table
The following table helps you with further procedure:
If you are going to perform the following
maintenance work... ... then...
Replacing the ash crucible
Replacing sealing elements
Pulling the furnace out of the instrument
Removing or installing the quartz glass bridge
Removing the reaction tubes from the furnace
Installing reaction tubes in the furnace
Removing the reaction tubes plugs
Removing and installing the drying tube
Removing the combustion tube connection ... go to the following in this section:
 "Preparing the instrument: Gas pressure" and
to
 "Follow-up instrument preparation: Gas
pressure / gas-tightness".
Ball valve maintenance
 ... requires special preparation/follow-up
work. This is explained in the specific
instructions.
 ... go to Ball valve maintenance.