BUCHI DuMaster D-480 - Manual (Page 248)

Operation Manual D-480 ©BÜCH Labortechnik AG
9 - Repairing the instrument 248
Reacting to a power failure
Open document
An open document is not lost in the event of a power failure. The temporary document file is
automatically loaded when the operating software is restarted.
What to do after a power failure
Depending on when the power failure occurred, proceed as follows:
Case Procedure
When the power failure occurred while you were
performing an analysis and there was a sample in
the analyzer. Follow the instructions in "Reacting to a power
failure during analysis".
Although you were performing an analysis when
the power failure occurred, there was no sample
in the analyzer. Follow the instructions in "Reacting to a power
failure".
The analyzer was in standby mode when the
power failure occurred. The power failure lasted
longer than 15 minutes. Follow the instructions in "Checking the gas-
tightness of the instrument".
The analyzer was in standby mode when the
power failure occurred. The power failure lasted
less than 15 minutes. No special measures required.
Reacting to a power failure during analysis
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.