1.The electric actuators generally are installed near the adjusting  mechanism and shall not obstruct the passing and maintenance elements overhauling and shall be convenient for operation and maintenance.

2.The connecting rod should not be too big, otherwise, the diameter of the connecting pipe of the connecting rod shall be enlarged. 

3.The tumbler of the actuators and the adjusting mechanism shall be in the same plane. Generally in 1/2 openess, the tumbler shall be perpendicular with the connecting rod.

4.After the actuators and adjusting mechanism are connected by the connecting rod, which shall enable the adjusting mechanism to turn down when the operating hand wheel of the actuator rotates clockwise and to enable the adjusting mechanism to turn up when the operating hand wheel of the actuator rotates anticlockwise. If it is not consistent with this, the direction of opening and closing the hand wheel shall be indicated on the actuators.

5.When the adjusting mechanism has thermal displacement together with the main equipment，the actuators shall be installed to ensure that its relative position with the adjusting mechanism is not changed.