HunterLab SpectraTrend HT, User Manual

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SpectraTrend HT User’s Guide 3.2
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MAINTENANCE
This chapter describes routine maintenance functions to be performed regularly on the
SpectraTrend HT system. Consistent system performance is enhanced by a consistent
maintenance program. The SpectraTrend HT requires very little maintenance other than regular
standardization and surface cleaning.
If it becomes necessary to disconnect the sensor or support unit cables for maintenance, always
turn power to the support unit off before disconnecting cables and turn it back on only after
reconnecting all cables.
Note: Do not disassemble the instrument and attempt to clean the optical
components. Do not open the instrument or remove any covers except using
the instructions given in this User’s Manual or under the direction of HunterLab
Technical Support.
Routine Maintenance Schedule
The following schedule outlines recommended maintenance procedures for the SpectraTrend
HT. The actual frequency of maintenance required will be determined by the measurement
application and plant operating conditions.
•
Daily (or once per shift) Check and wipe the sensor viewing window clean with
mild cleaning solution and then a dry soft cloth.
•
Weekly Clean the exterior of the sensor and mounting. Standardize the sensor.
•
Monthly Clean the standards (slide-on calibrator and sensor window monitor).
•
If a Hitch Standard has been used, then compare hitch standard values for the
SpectraTrend HT to those of the off-line colorimeter. Rehitch the SpectraTrend HT if
necessary or desired.
•
As Needed : Replace the sensor window.
Replace the fuses.
Perform the diagnostics.
Cleaning the White Tile
The White Standard is an optical coating and should be handled in much the same way as other
optical surfaces. Although the material is very durable, care should be taken to prevent
contaminants such as finger oils from contacting the material’s surface. If the surface appears
lightly soiled, it may be air brushed with a jet of clean dry air. For heavier soil, the material can
be cleaned by scrubbing with a soft brush under running water. Blow dry with clean air or allow
the material to air dry. If the material is heavily stained, soak with either an extremely mild mix
of soap and water, 5% white distilled vinegar, or hydrogen peroxide. Then run under water while
scrubbing with a soft brush. Always keep tiles in the Standards box when not in use