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The correct use of the spring should pay attention to the points
2017-09-19

◆ Close the door too fast, should adjust the speed control button, if no response should be checked to spring whether the oil spill, such as oil leakage, please replace.

◆ found that the spring oil spill, should be replaced, please do not continue to use, because there are security risks.
◆ door only in one direction to open, any man's strong closing action will lead to damage to the internal components lead to one-way open or damaged, it should be automatically returned to the door is better.
◆ two doors appear dislocation, should see whether the spring under the box is fixed on the cement floor, adjustable up and down around the left and right adjustment knob adjustment.
◆ It is strictly forbidden to polish the center of the center of the spring.

                   

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