Installation and use of electric door closers

Electric door closers are often used on fire doors. They have the function of automatically closing fire doors and are used in the fire door monitoring system for normally open doors. The electric door closers of LeBi can be connected to any type of alarm host. Any electric Before installing the product, the product must be read in detail for its installation and use instructions. This is especially true for electric door closers that work in the first line of fire protection. The following describes the installation instructions for the Leobird LN9D electric door closer .
First, the installation instructions
1. Determine the direction of the fire door opening. Find out whether the fire door is a left-hand door or a right-hand door. Which side of the door is the side of the fire door, which side of the door is closed, and what is the direction of the door opening.
2, choose a suitable installation method, you can install the product on the side of the sliding door, the main body in the upper door frame, the slide rails on the door, or the main body on the door, sliding rails on the door frame. The product can also be installed on the side of the sliding door, the main body is placed on the upper door frame, the slide rails are mounted on the door, or the main body is mounted on the door, and the slide rail is mounted on the upper door frame. If you cannot use the above mounting method, you can choose to install the bracket, install the product on the side of the sliding door, install the main body on the door, and install the bracket and the slide rail on the door frame.
3. Follow the corresponding steps to perform the installation. The steps are: Install the screws - attach the main body to the screw and tighten it - install the slides and fix - install the main arm - connect the main arm to the main body - connect other gated products (if any) - check the circuit and power it up for commissioning - set the relevant function of the product - set the debug and then install the housing and other components - installation is complete.
Second, the use of instructions
1. There are ABCD buttons on the remote control. A button is the door open button. After the fire door is pressed, it will automatically open to the set angle. The B key is the door close button, and the fire door will automatically close when pressed. The C key is a normally open key. When this key is pressed, the fire door will open to a position 10 degrees more than the set angle. If there is no other operation, the door will remain in this state. The D key is a setting key and can be pressed to set various functions. The remote control must be used within 30 meters. If it is beyond the distance, it will have no effect.
2, if you want to restore the factory setting of the electric door closer , you can do the following operation, turn off the power, then hold down the D key of the remote control, and turn on the power switch until you hear the device emit a long ring Release the D key and the system in the device will be restored to factory settings.
3, according to the actual situation to set the switching door and switch door buffer speed.
4, according to the actual situation to set the delay closing time.
5, according to the actual situation to set whether the door closer and smart lock and other connections.
As the core of the fire door monitoring system, the electric door closer is closely related to the installation and use. Therefore, before installing and using it, be sure to clarify the relevant installation and use methods.

We can produce lots of Alloy Steel Pipe that used on the Petrochemical and Refinery project, such as the P11 Steel Pipe ,P12 steel pipe ,P22 steel pipe ,P91 steel pipe,P92 steel pipe ,P5 steel pipe, P9 steel pipe and P36 steel pipe.From 2013 to 2015 year, we awarded the world`s largest P91 order from Reliance (single PO 8,000 tons P91), the final additional quantity together is up to 16,000 tons, Plus CS 11000 tons. Entire projects P grades are from Yangzhou Chengde. Our main reference list on the  Petrochemical and Refinery projects as following:

EPC Owner Project name Location Project introduction Material Size range(mm)  Qty(MT) 
Flour/Technip Sasol Lake Charles Chemical complex Lousiana USA Sasol's Lake Charles Chemical Complex is a world-scale petrochemical complex The $8.9 billion project will roughly triple the company's chemical production capacity in the U.S. and enable it to build on its strong positions in robust and growing chemicals markets. GR6/P22/P91 114~609*14.27~46.99             600
Flour/Bechtel Reliance Jamnagar Refining And Petrochemical Complex  Gujarat India The Jamnagar complex comprises of a petroleum refinery and associated petrochemical plants. The refinery is equipped to refine various types of crude oil (sour crude, sweet crude or a mixture of both) and manufactures various grades of fuel from motor gasoline to Aviation Turbine Fuel (ATF). The petrochemicals plants produces plastics and fibre intermediates.  A106B/P11/P5/P9/P91 21.3~1066.8*4.78~60.33         25,370
YC had established the post-doctoral research station since 2006 focusing on new material development such as P92, P91, X80. More than 29 kinds of new materials and products have won the national and provincial prizes from 2006 till now.

Refinery Steel Pipe

Refinery Pipe

Oil Pipe,Refinery Pipe,Astm A519 Pipe,Fuel Refinery Pipe

YANGZHOU CHENGDE STEEL PIPE CO.,LTD , https://www.chengdepipe.com