wtw photoLab 6600 UV-VIS Instrucciones De Operación página 85

®
photoLab 6600 UV-VIS
Self-test does not
start.
The instrument
displays
Please remove cell
Obviously incorrect
measured values
Fluctuating
measured values
ba75850e04 02/2011
Cause
– A cell is inserted in one of the cell
shafts
– A foreign object is inserted in one
of the cell shafts
– The instrument has to carry out a
new adjustment for the
rectangular cell recognition
– The rectangular cell shaft is
contaminated
– Instrument defective
Cause
– Cell contaminated
– Dilution set incorrectly
– Selected method not suitable
– Zero measurement incorrect
– Blank value incorrect
– Cells that are not recognized (e.g.
some plastic cells) disturb the
AutoCheck measurement and, as
a consequence, falsify measured
values until the next AutoCheck is
carried out
Cause
– Cell shaft cover open
Remedy
– Remove the cell
– Then press the
<START·ENTER> key
– Remove foreign object
– Then press the
<START·ENTER> key
– Press the <START·ENTER>
key.
– Clean the cell shaft (see section
5.2.2 and section 6.1)
– Restart the instrument
– If necessary, confirm the Please
remove cell message with
<START·ENTER>.
– Return instrument to service
department
Remedy
– Clean the cell
– Set the dilution
– Select different method
– Perform zero measurement
– Remeasure the blank value
– Use suitable cells (see section
7.1)
Remedy
– Close the cell shaft cover
What to do if ...
83