NHN 3500 Series is a door closer of slim and modern design with adjustable closing force of EN3-7 conforming to EN1154 and CE mark. One body sizes will cover the full door range of requirements and applications.

Selection Chart

Power Size EN	Door Width (mm)	Door Weight (kg)	NHN 3500 Series
Power Size EN	Door Width (mm)	Door Weight (kg)	Regular	Hold Open	Backcheck	Slide Arm
3	950	60	3536	3536S	3536BC	3536GL
4	1100	80
5	1250	100
6	1400	120
7	1600	140				-

Adjustment

Model		3500 Series
Power Size EN	Door Width (mm)	Door Weight (kg)	No. of Turns	Direction	Max. Opening angle
3	950	60	6	-	180
4	1100	80	6	-	180
5	1250	100	4	-	180
6	1400	120	0	*	180
7	1600	140	5	+	180

Closing Speed Adjustment

Spring Power Adjustment

Turn the ‘Power Adjuster Spring’ the required number of clockwise or anti-clockwise turns according to the door width as indicated. In adverse weather conditions, increase the number of turns as required.

Latching Function (standard)

This function increases the door closing speed in the last 0 – 2deg. before the fully closed position, ensuring quick and complete door closure. This function is most useful with an airtight door or with a door with a tight latch.
The latch angle is factory set at 0deg., turn the link counterclockwise about 4 turns (this extends the link) and a latch angle of 2deg. is obtained.

Back-check Function (optional)

If a gust of wind or other strong force hits the door in the opening direction, it can damage the wall or cause injury to people.
The back-check function works within the door opening range 70 – 85 to 180deg. The back-check power can be adjusted with the back-check valve.

Standard Installation
This drawing shows right hand configuration (DIN L)