How To Install A Commercial Door Closer

Описание: How to install model 400 of the NHN door closer:
1. Assembly: install the main arm according to the direction of door hinges to door closer. According to this, pay attention that adjusting screws of 1 and 2 are always up toward the door hinges.
2. #DoorCloser installing: put the installation template in a proper place. The right location of it, is the horizontal line corresponding to the top of the door and the vertical line corresponding to the hinge axis.
Now, mark the place of installing the screws of door closer based on this template. Perforate these marked places for installing screws of nhnme.com door closer and the forearm. Then, install the forearm at the place and in the direction specified in the movie. Now, install the main body of the door closer at the specified place with its special screws and finally, screw the forearm to the right length and attach to the main arm and check the speed of one cycle of complete closing course.
3. Device adjustment: the amount of applied spring force is based on the width and weight of the door. Please pay attention to this amount through the dimensions given on the side adhesive and the table provided in the Figure. Factory default settings are displayed in the table with blue color.
Increase the amount of spring force to the required turning number in the positive direction according to the displayed table, if it is necessary. In addition, decrease the amount of spring force to the required turning number in the negative direction according to the displayed table, if it is necessary.
Lock Types:
The locks are divided into two general categories:
At the right side of the figure, the electric locks include:
Electric clasp gate lock
Electric rim lock
At the left side of the figure, the mechanical locks also include:
Mechanical rim lock
Electric striker lock
Mortice mechanical lock
To utilize from Model 400 of NHN door closer, please make sure that the lock of the door be only from mechanical lock types such as mechanical rim lock or Mortice mechanical lock. Do not use this door closer for the doors with electric locks.
Before adjusting the door closer, place the adjustable forearm at a 90 degree angle to the frame. After removing the steel main and sliding covers, both of the adjustment screws of initial speed or closing and secondary speed or latching are observable which the direction of rotating for increasing or reducing has been displayed on the adhesive label. The closing speed of the first and second stages is almost equal to 1/4 round in each adjusting proccess in the clockwise direction to slow down and the same amount in the counterclockwise to increase speed. Please place both covers in their allocated places after making the settings.
How to close the door: Note that in the two-stage installation, the first stage is from complete opening up to the last 15 degrees and the second stage is the last 15 degrees.
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