SPECTRONIC 200E USER GUIDE
System Maintenance
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SPECTRONIC 200E User Guide
Thermo Scientific
When using liquid samples, check the sample compartment floor for spilled liquid between
measurements. Spilled chemicals may damage the sample compartment, or vapors may cloud
the lenses at either side of the sample compartment, causing a measuring error. Remove the
sample compartment and wash out any spilled solutions.
Check the lenses on the left side sample compartment once per week. Ensure that they are not
contaminated with fingerprints or haze from dried sample vapors. If lenses are contaminated,
wipe them with a clean, lint-free cloth.
Initialization with Error Messages
The spectrophotometer performs various checks, including a lamp energy check, and sets
many initialization parameter values during power up. The progress of the tests is displayed as
a self-diagnosis window. If no abnormality is detected, the instrument progresses to the Home
menu. However, if an abnormality is detected at any step, the instrument stops there and
displays an error message. In such a case, identify the problem source, if possible, and correct
it. If the problem source is not correctable, contact your nearest Customer Support Center
indicating the error messages.
Note that when the lamp is operating, light can be seen shining out through the ventilation
grille on the back of the instrument. If a lamp error is reported, verify that the lamp is lit
before contacting Customer Support. Spare lamps are available from your Thermo dealer.
Lamp Replacement
Precautions
Wear gloves when handling the lamps so as not to leave fingerprints. Leaving fingerprints on
the glass of the lamp can lead to damage to the glass and/or reduce its transmittance.
Treat the lamp with extreme care during replacement. If the lamp glass is damaged leakage in
the envelope vacuum may occur. The lamp will not function if an impact causes a loss of the
vacuum seal. This can occur even when the glass appears undamaged.
CAUTION
The light source and light source housing become hot during operation. Be
sure to turn off the power switch and allow the housing and lamp to cool sufficiently
before handling.
