1. To unscrew a cork of the stuffing of liquid in a wide tank. · |
2. To establish a lever of control of the temperature of the system of the heating of the hall in the very temperature. |
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3. To unscrew a cork of the unloading of cooling the liquid in an electric heater (it is specified by an arrow), below which it is more advanced necessarily to substitute the corresponding capacity and to wait for the liquid that cools I lower still it will not flow. |
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