Hitachi OE700 Series, Operating Manual

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10 Faults
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54 Hitachi High-Tech Analytical Science
10.2 Faults of the OE700 series
Information
If none of the above named faults can be identified or the fault cannot be remedied
applying the methods indicated under "Remedy", please contact the service (see
chapter 12.1, page 61).
Table 10-1 Possible faults and remedies (OE700 series)
Fault Information Remedy/explanation
No communication between PC and
instrument Error message:
No spectrometer connected! Possible reasons: ... Follow the instructions in the error message.
Measurement cannot be started. Red bar at the bottom of the analysis window of
the instrument:
1. Source
2. Sample
3. Argon
1. Switch on the excitation source on the
instrument.
2. Place the hold-down device prior to
measurement.
3. Is the argon pressure correct?
Instrument cannot be switched on. No visible reaction at the instrument 1. Is there a mains voltage?
2. Check fuses at the power input.
measurements extremely loud Loud measurement 1. Position the sample correctly.
2. Connect the off-gas hose to the washing
bottle.
3. Check the water level in the washing
bottle.
Intensity in the direct light path
decreases or has completely ceased. Error message:
Reference beyond tolerance 1. Incorrect analysis program selected?
2. Check of argon system?
3. Optics sufficiently purged?
Measuring results deviate from usual
values, precision decreases, spark-
overs in the spark stand. (See fault) 1. Check the electrode spacing and
readjust, if required.
2. Clean the spark stand.
Message:
e.g. Cr > 6 % Message:
Admissible calibration range exceeded. Wrong analysis program selected – start in
orientation program.
Message:
e.g. C < 0.001 Message:
Detection limits fallen below of. The concentration of the corresponding
element in the measured sample is too low.
Short circuit 1. Flashing rotary knob (source)
2. Error message SpArcfire: 1. Switch off the rotary knob for the
excitation source on the front of the
instrument.
2. Confirm the error message with OK.
3. Clean the spark stand (chapter
Maintenance).
Please note that there might be other
reasons for the short circuit (e.g. a foreign
object).
4. Switch the rotary knob for the excitation
source back on and repeat the
measurement.
5. Should the error reoccur directly, please
contact the service.