40 • About Instrument Maintenance Datacolor 650/600/400 User's Guide
4. Using the Minivac portable cleaning system, carefully vacuum away any loose
materials in the sphere.
WARNING
Do not touch the inside of the sphere. The coating is very fragile.
5. When finished, replace the aperture plate.
Tile Handling/Cleaning
Handling Tiles
• Handle calibration tiles with extreme care. Do not drop them, or scratch the
glazed surface.
• Always grasp the tile using its edges.
Cleaning Tiles
• The calibration tiles should be cleaned before each use. Wiping it clean with a
soft, lint-free cloth can do this.
• A detergent, free of optical brighteners, fluorescent materials or photoactive dyes
should be used as needed to clear any oils, fingerprints, or other deposits. Liquid
dish detergent is a suitable detergent. The detergent/water solution should be
prepared as follows: 1 part detergent : 250 parts water. Use a few drops of
the detergent solution to moisten a soft, lint-free cloth, and gently wipe the tile
surface. Rinse the detergent from the tile by wiping it with a cloth, moistened
with clean water.
• NEVER use abrasive cleansers, razor blades, or other metal objects to remove
dirt or foreign substances from the calibration tiles. This will damage the tile
surface.
• NEVER immerse the tiles in water.
• Tiles that have scratches, chips, abrasions or cracks must be replaced. Signs of
wear on the tile surface will affect the accuracy of the calibration.
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