Swann Chematest 35 Operator's Manual page 38

Chematest 35
Troubleshooting
Measurement
after adding
reagents fails
36
Error message "Operation not possible! Signal out of range.
Consult the manual." is displayed.
Possible cause
Extraneous light
Cuvette dirty
Concentration or pH value
outside the measuring
range of the instrument
Reagents expired
Measured value below
zero value
Corrective action
 Make sure that the cuvette cap is
properly closed.
 Clean and rinse the cuvette.
 Consult Instrument
Specifications, p.
 Repeat measurement.
 Use new reagents.
 Avoid formation of bubbles when
filling the sample into the cuvette.
 Repeat measurement.
A-96.730.121 / 160920
50.