REGULAR ARM INSTALLATION
MODEL BC4051 or BC4052 INSTALLATION INSTRUCTIONS
PAGE 2
MODEL
DIMENSIONS "A"
OPENING
inches
[mm]
BC4051
BC4052
7"
178
6"
152
3-1/2"
89
*DOOR/WALL/HARDWARE/JAMB CONDITIONS PERMITTING
TO 100°
101° TO 120°
121° TO 180°*
999-30001
POSITION OF MAIN ARM WHEN ASSEMBLING TO PINION SHAFT
SPEED REGULATING VALVES
90°
FRAME
DOOR
FOOT
SCREW
& WASHER
PINION
CAP
6" (152 mm)
A
1 3/4" (44,5 mm)
1" (25,4 mm)
9-1/16" (230 mm)
1" (25,4 mm)
3/4" (19 mm)
1. SELECT DEGREE OF OPENING. USE DIMENSIONS SHOWN IN CHART AND ILLUSTRA-
TIONS ABOVE TO MARK LOCATION OF ATTACHING SCREWS ON THE DOOR AND FRAME.
PREPARE HOLES (See Preparation For Fasteners chart, Page 1).
2. ATTACH CLOSER TO THE DOOR WITH THE SPEED REGULATING
VALVES FACING THE HINGE SIDE OF DOOR.
3. DISASSEMBLE FOREARM FROM MAIN ARM BY REMOVING ELBOW WASHERS AND SCREW.
4. ASSEMBLE MAIN ARM TO CLOSER
USING MAIN ARM SCREW AND
LARGE FLAT WASHER.
5. ATTACH THE FOOT OF THE FOREARM TO THE FRAME.
6. ADJUST THE LENGTH OF THE FOREARM TO POSITION THE FOREARM AT A RIGHT
ANGLE TO THE FRAME TO ENSURE PROPER LATCHING, AND ATTACH FOREARM TO
MAIN ARM USING ELBOW WASHERS AND SCREW.
7. SNAP PINION CAP OVER THE PINION AT THE BOTTOM OF THE CLOSER.
8. ADJUST CLOSER (refer to ADJUSTING SWEEP SPEED & LATCHING SPEED on page 1)
• RIGHT HAND DOOR ILLUSTRATED. SAME
DIMENSIONS APPLY TO LEFT HAND DOOR
• MEASURED FROM HINGE CENTERLINE
• DO NOT SCALE DRAWING
FRAME
RIGHT HAND DOOR
RIGHT ANGLE
POSITION OF MAIN ARM
WHEN ASSEMBLING TO SPINDLE
INSTALLATION INSTRUCTIONS
RIGHT HAND DOOR
LEFT HAND DOOR
