USTER HVI SPECTRUM - Cleaning Calibration Tiles

USTER
®
HVI SPECTRUM Instruction Manual
Uster Technologies, Inc. Chapter 13
Maintenance • Page 13-3
• Never try to use a tile set other than the one assigned to the unit. Due
to technology changes there are important differences in colorimeters
that require different levels when the calibration tiles are assigned.
• Always store tiles in the container they are shipped in. These boxes are
manufactured solely for tile storage and are designed to keep the tiles
in a clean and dust free environment.
• If a tile is broken or becomes cracked the entire box should be
returned to USTER for repair or replacement. During
repair/replacement, the entire tile set will be evaluated and values re-
assigned if necessary.
• Only calibrate with the tiles (supplied with the unit) as prescribed by
the calibration section of the instruction manual.
• Always check the tile set for fingerprints or soil spots before
calibrating a colorimeter. Fingerprints, though not very noticeable can
cause a calibration level shift of up to 0.4 RD or +B. Even though the
colorimeter may calibrate under these conditions, the cotton testing
results will not be accurate. Fingerprints can usually be seen on tile sets
by holding the tile up and looking at the reflections given off the tile
set. Fingerprints, if left on a tile set for a period of time, will turn yellow
and thereby shift the color calibration.
• Handle the tiles only on the edges by stretching the fingers across the
back-side of the tile and grasping the edges. Never handle the tiles in
a manner that will place fingerprints on the color surface.
• Uster recommends the tile set be cleaned on a periodic basis,
depending upon use and conditions. Usually every 2 to 3 months is
sufficient.
3.1 Cleaning Calibration Tiles
Use care when handling, using or cleaning the tile set. To clean the tile set,
1. Use a small amount of dish liquid in about ½ gallon water.
2. Using the soap mixture, use a soft cloth to thoroughly clean all
fingerprints from the surface of both sides of each tile.
3. Do not touch the color surface once the cleaning has been done.