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After the installation of the screening operation of the placer gold equipment, the test run of the empty car shall be carried out, the installation quality shall be initially checked, and the necessary adjustment of the placer gold equipment shall be made. (1) the placer gold panning equipment should run empty, the time should not be less than 8H, in this event, observe whether the screen start smooth, fast, no special noise, observe whether the screen amplitude meets the requirements. (2) the screen box vibration should not produce yaw when placer gold panning equipment is running. If Yaw occurs, it may be due to the excessive height difference between the springs on both sides, the uneven tension of the hanging wire rope, the non-horizontal rotating shaft or the tight triangle tape, adjustments should be made accordingly. (3) within 4 hours of starting the Gold Pan, the bearing temperature increases and then remains stable, with the maximum temperature not exceeding 75 °C. (4) if there is abnormal noise after starting operation of the Gold Pan, or if the temperature of the bearing rises sharply, the machine should be stopped immediately to check whether the shaft rotates flexibly and whether the lubrication is good, etc. . (5) placer gold panning equipment starting 2-4 hours, stopping to check whether the connecting parts are loose, if there is loose to be fixed before starting. (6) if there is no fault in the 8-hour trial run of gold-digging equipment, the installation project shall be checked and accepted.