Precaution
22
Precaution
• Always clean the instrument after use.
• Remove the dust using a brush, then wipe off with a soft cloth.
For cleaning the lens surface of the receiving window, use a cleaning brush, then use a clean
lintless cotton cloth. Moisten it with alcohol (or mixture with ether) to wipe gently in a rotational
motion from the center out.
• To remove the dust on the surface of emitting window or the parts made by plastic, never use
thinner or benzine. Use a clean cloth moistened with neutral detergent.
• Always make sure the instrument is completely dry before storing. Dry any moisture with a
soft, clean cloth.
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