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3. For check of level of a liquid it is necessary to turn on and get a tank stopper together with built in probeом, to wipe probe and again to screw a stopper (preliminary to wipe a tank). Again turn out a stopper and check up level on edge of a film of a liquid on probeе. Liquid level should be in range Cold (if a liquid cold), or in range Hot (if a liquid hot).
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