Door Closer Installation, Door Closer Oil Leakage Repair Method！
Source: | Author:business-101 | Published time: 2013-10-05 | 823 Views | Share:
　　Door closers are divided into exterior and hidden, and the most commonly used is the exterior. The more common method of installation is: the door closer is mounted to the opposite side of the door opening, and the door closer arm is approximately 90 degrees from the door. The door closer body is installed on the door frame. Unless the door frame is too narrow in the extreme case, the door closer will not be installed, and it will be installed on the door leaf. It is also worth noting that the door closer is usually mounted on the outside door.　

Door closer installation, door closer oil leakage repair method！
　　First, the installation steps of the door closer：
　　1. Determine the installation position: According to the door closer instruction manual, understand the relevant parameters of the door closer and match the size of the door to determine the installation position.
　　2. According to the requirements of the size of the closing force, the closing force can be changed by inverting the connecting seat by 180° or changing the connection position between the connecting rod and the connecting seat. At the same time, the farther the door closer is connected to the door hinge, the closer the door closer needs to be, and vice versa.

Door closer installation, door closer oil leakage repair method！
　　3. According to the position indication on the installation template, determine the position of the mounting screws, then drill and tap. Install the door closer body with screws. Install the fixed connector. Install the engine board with screws.
　　4. Adjust the adjustment lever to 90° to the door frame and connect the connecting rod to the drive plate.
　　5. After the installation is completed, check whether the fixing screws are tight and there is no loose or weak. Open the door to the maximum door opening position and check if the hinged arm of the door closer touches or rubs against the door or door frame.
　　6. Closing speed of door closer: There are cross or one-word or hexagon socket screws on one side of the door closer. This screw directly controls the throttle valve core. It may adjust the screw to adjust the speed of closing the door.

Door closer installation, door closer oil leakage repair method！
　　Third, the use and maintenance of the door closer, repair
　　Newly installed door closers are used for approximately one to ten days, and all screws should be inspected and retightened.
　　Use hydraulic oil recommended by the manufacturer. For cold areas, use low-condensation hydraulic oil.
　　The door closer should be inspected regularly after being put into use. The contents of the inspection are: whether the mounting screws are loose or missing, whether the connecting arm rubs against the door or the door frame, whether the door body is deformed or loosened, the buffering effect of closing the door, and the support guiding Whether the piece leaks oil, etc.
　　Usually the following problems occur after the door closer has been used for a while：
　　1) The mounting screws are loose or missing, resulting in the door closer not being in the correct mounting position and the connecting arm being damaged;
　　2) When the door closer is closed, the buffering effect is deteriorated, causing the door to collide with the door frame and the door body is deformed;
　　From the structure point of view, the door closer is a closed whole, and its quality is basically not seen from the appearance.


　　The most critical quality problem of the door closer is whether it leaks oil, because the door closer relies on the throttling of the fluid in its internal hydraulic system to control the closing process. The oil leakage means the failure of the hydraulic system, so the hydraulic system is The only criterion that determines the life of the door closer. The main cause of oil leakage is that the pinion support guide wears to increase the clearance, the seal wear causes the sealing effect to decrease, or the throttle body rotates counterclockwise away from the valve body when adjusting the cushioning effect.
　　The reduction in the cushioning effect of the door closer is caused by the entry of air due to oil leakage or the increase in the fit (throttle) gap between the rack plunger guiding cylinder and the valve body. Therefore, the quality and accuracy of the material of the pinion and the support guide, heat treatment and machining are very important.
　　For a door closer with poor cushioning effect, simply adjusting the throttle spool for throttling cannot solve the problem at all. It is necessary to repair the method. If there is oil leakage at the support guide, remove the support guide and check the condition of the seal. If it is worn or aged, replace the seal. If the gap between the support guide and the pinion shaft is too large, the support guide is replaced. If the rack plunger is worn on the guide cylinder, the clearance between the valve body and the valve body is increased, resulting in a decrease in the throttling effect. The rack plunger can be removed and the surface is chrome-plated.