How closed the door closers
Adjust the tightening of the door closer is to adjust the closing speed, the strength of the fast when the speed is small, the door is close to the door close to the slow speed.
Door closers to adjust the closing speed is through the two hydraulic valve independent control of two door closers closing speed for full hydraulic control.
Adjustment method and precautions:
(1) generally in the side of the door closer to the side of the adjustment valve is marked 1.2, speed 1 block is to adjust the door opening angle from 90 degrees to 20 degrees between the closing speed, speed 2 is to adjust the door opening angle from 20 Degrees to 0 degrees is the door completely closed the speed of the trip.
(2) When adjusting the valve screw tightening (clockwise adjustment) is to slow down the speed, that is, the door closer to the door to adjust the power.
(3) If the valve screw loose (counter-clockwise adjustment) is the speed becomes faster, that is, increase the closing door closing force. Adjust the amplitude must be controlled in a small range, and each adjustment are tested door fan strength is appropriate, if the amplitude is too large may screw off, resulting in door closers oil spill.
There is a small mouth on the right side of the door closer, there are screws, that is, tight tone
