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5. PRECAUTIONS
A hardness tester is a technically complex measuring device that requires careful
handling. It must be protected from:
• shocks, loads that can lead to mechanical damage to the hardness tester;
• exposure to chemically aggressive environments;
• ingress of liquids;
• prolonged exposure to direct sunlight;
• other influences which can cause damage to the functionality of the device.
The use of a hardness tester in the conditions of the sharp difference in temperatures is
not allowed. After transporting the device to the place of operation at a negative ambient
temperature and placing it into a room with a positive temperature, it is necessary to keep the
product in its packaging for at least 6 hours in order to avoid failure due to condensation of
moisture.
Do not use batteries or chargers that are not approved by the manufacturer in the
hardness tester.
Dissection of the electronic unit and probes, and self-repair of the hardness tester is not
allowed.
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