3000 Series Door Closer - Page 9

All 3320 and 3520 Series Holder/Stop closures, either individually sized or multisized, combine a full feature 3000 Series door closer with an exceptionally sturdy arm assembly that provides a positive stop and is optionally available with a hold-open feature.

The door closer's backcheck feature slows the door before it reaches its fully open position. A bracket on the arm's soffit plate then furnishes a positive stop for the door. When hold-open is required it is available with either a hex-key or thumbturn control feature.

Door Sizing Sized Closers

*Size Based on standard weight and size (7'0'') door hung on ball bearing hinges. Larger doors or doors exposed to severe winds or drafts usually require the next size closer.

#With Full Metal Cover this dimension is 6-1/4'' (159mm).

TYPICAL POWER ADJUSTMENTS* MULTI-SIZE CLOSERS

MAXIMUM DOOR SIZE FT.IN. (METERS)	+NUMBER OF TURNS (360°) OF ADJUSTMENT NUT
	INTERIOR	EXTERIOR
NORMAL POWER CLOSERS (1)
2'6'' (0.75)	2	3
3'0'' (0.90)	3	5
3'6'' (1.05)	5	7
4.0'' (1.20)	7	9
+Maximum No. of 360° Turns                          12
BARRIER CODE POWER RANGE CLOSERS (2)
2'6'' (0.75)	3	8
3'0'' (0.90)	3	8
3'6'' (1.05)	4	9
4.0'' (1.20)	6	11
+Maximum No. of 360° Turns                                               15

*Chart shows typical adjustment only. Installer must adjust the closer for proper control based upon individual installation configuration and environment. Each closer is packed with a chart to guide proper adjustment based upon type of installation and size of door.

1. Power of closer can be adjusted to conform to the sizing requirements outlined in ANSI A156.4-1980, Standards For Door Controls - Closers.
2. Power of closer can be adjusted to conform to the sizing requirements outlined in A.D.A. and ANSI A117.1 -1980, Specifications For Making Buildings and Facilities Accessible To And Usable By Physically Handicapped People.