Fidelity Electronics FM180, Руководство по эксплуатации

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12. Daily Care & Maintenance
 Clean the instrument with a soft, damp cloth. If necessary, use a mild
detergent in water,
 Do not use any harsh, abrasive material, acetone, volatile solvent,
thinner or alcohol for cleaning,
 Verify the accuracy of this instrument periodically. Re-calibrate if
necessary. In some countries, calibration requires authorized /
qualified agent. Contact your dealer for more information,
 Store this instrument in a dry and clean place,
 Recharge battery before and every 2 months during long time storage.