EFCO T300 Series - Manual (Page 16)

STEP #21 LATCHING AND CLOSING SPEEDS
FIGURE #17
"C" valve
CLOSING SPEED
"L" valve
LATCHING SPEED
4"x 4 1/2" W/ 3/32" RECESS
OFFSET PIVOTED DOOR
SECTION XII: CLOSER ADJUSTMENTS
90
105
CHART FOR C.O.C. HEADER PREPARATIONS
90
105
BACKSTOP
BUTT HINGED DOOR
MINIMUM 4" HEADER
MINIMUM 4" HEADER
3/32" RECESSED DOOR
HINGING
2" 2 3/4"
2 3/4" 2"
"C" "L"
DIM"B"
3 3/4"
2"
2"
DIM"A"
3"
FIGURE #16
105 90
STEP #20 C.O.C. INSTALLATION
STEP #19 HEADER PREPARATION
SECTION XI: HEADER PREPARATION FOR C.O.C.
PAGE 15
A
DPS/BB JULY 2000
A. The latch and closing speeds have been preset, but
may require further adjustment. See Figure #17.
B. The closing valve is preset to the minimum speed.
C. To increase latching and/or closing speed, turn the
valves counterclockwise.
D. To decrease latching and/or closing speed, turn the
valves clockwise.
1. Install the closer in the prepared header.
2. Install the slide in the slide channel with the end marked 90˚ toward the hinge edge of
the door, if the 90˚ backstop closer is used, or with the end marked 105˚ backstop closer.
3. Place the arm on the closer spindle and tighten the 1/4"-20 socket head screw
securely. Rotate the arm from center as if the door was open. Place the hole in the arm
over the pin in the slide and secure with the ’C’ clip.
NOTE: For other information on C.O.C.’s, contact EFCO’s Manufacturing Department.
For C.O.C. header preps, see chart below for dimensions based on application.
1. DIMENSION ’A’, face of jamb to center line of spindle must be maintained.
2. DIMENSION ’B’, pivot or hinge side of header to center line of spindle regardless of header
width. See Figure #16.