Generally, the joints of operating light arm system use damping nails to adjust the elasticity, after the operating light is installed or used for a period of time, it is necessary to readjust the damping nail when the light cannot be stably parked at a desired position or when the adjustment force is too large, make sure the light head and the articulated arms have the proper starting force and can stay in the desired position stably. It should be noticed that the damping nail should be adjusted by professionals, the starting force of each joint satisfies the factory inspection requirements after adjustment, and the light head can stably stay in different positions. The right way to adjust operating light arm The value of operating light balance arm has been adjusted before leaving the factory, don`t need to adjust it without special situation. Balance arm angle can be adjusted according to need, make sure that the balance arm will not touch ceiling or other structures when it is moved up and down after adjustment. When you need to adjust force or angle, it should be done after the light head is installed, adjust the arm after it is in the pull-down horizontal position. Warning: When you remove the light head, you need to press down on the balance arm to prevent the balance arm from rebounding, then slowly place the balance arm in the corresponding equilibrium position.