BUCHI DuMaster D-480 - Manual (Page 249)

Operation Manual D-480 ©BÜCH Labortechnik AG
9 - Repairing the instrument 249
 Perform a leak test by selecting Options > Diagnostics > Leak Test.See Performing a leak
test (on page 242).
If a leak is identified, replace the sealing elements in the furnace area. See Replacing sealing
elements.
 There may still be some residue of the last sample in the combustion section. Perform blank
value determinations to remove the residues. See Determining blank values (on page 144).
 Correct the number of the current sample via Edit > Current sample. See Adjusting the current
sample.
 Insert additional sample lines at the top of the sample view for a daily factor determination via
Edit > Insert Line.
 Prepare daily factor samples and place them on the carousel. Put the other samples behind this.
 Restart the measurement via System > Continuous.
Reacting to a power failure
Please observe the following instruction:
Caution Inserting multiple samples into the ball valve (only for
solid operation)
If there are samples in the carousel while you are changing the position of the
carousel via System > Carousel position, multiple samples may fall into the ball
valve at the same time. In this case, a service technician is required.
Before changing the position of the carousel, always remove all samples from the
carousel.
Proceed as follows:
 If the analyzer is still switched on, switch it off and wait for a moment.
 Switch the analyzer on again.
If the ball valve...
 ... audibly does perform a reference run: Go to the next step.
 ... ...does not perform a reference run: Disconnect the instrument from the mains, check the
fuses and replace them if necessary. See Replacing fuses (on page 243). After replacing
the fuse repeat this step.
 Restart the operating software. The temporary file of the most recent document is loaded.
 All measuring results exist except for the most recent sample. A message appears which informs
that the sample position is not definied and a reference run has to be carried out.
 Confirm this message by clicking OK. This displays the "Adjusting the carousel position dialog.
 without removing the carousel, remove all remaining samples from the carousel. Confirm this in
the dialog by checking "All samples removed from carousel". Then move the empty carousel to
zero position ("Reference run" radio button). Cf. Changing the position of the carousel (on
page 251).
 Create a backup of the current document via File > Save as.
 Perform a leak test by selecting Options > Diagnostics > Leak Test.See Performing a leak
test (on page 242).
If a leak is identified, replace the sealing elements in the furnace area. See Replacing sealing
elements.
 Correct the number of the current sample via Edit > Current sample. See Adjusting the current
sample.
 Insert additional sample lines at the top of the sample view for a daily factor determination via
Edit > Insert Line.
 Prepare daily factor samples and place them on the carousel. Put the other samples behind this.
 Restart the measurement via System > Continuous.