Closer Regulation & Power Adjustment - LCN 4600 Series Installation Instructions Manual

Door CLoSEr HYDrAULIC rEGULATIon &
poWEr ADJUSTmEnT
1. CLoSInG SpEED ADJUSTmEnT: (See Fig. 9)
The hydraulic regulation of the 4600 series has been adjusted
prior to shipment. To meet ANSI A156.19 table 1 requirements,
open door to 90° and determine the closing time. Make sure
the spring power and closing speed are correct. If adjustments
are necessary, use 3/32 allen wrench provided and refer to
door diagram shown in Fig. 9. Turn mAIn SpEED & LATCH
SpEED screws clockwise to slow door speed, counter-
clockwise to increase speed. The installation of the controller
will make the mAIn and LATCH SpEED regulating screws
inaccessible.
noTE: Do not back regulating screws out of closer or an oil leak
will occur
Fig. 9
LATCH SPEED
MAIN SPEED
2. BACKCHECK ADJUSTmEnT:
Backcheck slows the door swing as it approaches full opening.
Adjust the backcheck setting only if necessary. Increase
backcheck strength by turning BACKCHECK screw clockwise
by quarter turns. Make sure backcheck adjustments conform to
ANSI A156.19 sections 4.2, 4.4, 4.5, and tables I & II. Do noT
USE An ABrUpT BACKCHECK SETTInG.
a. Remove forearm set screw and open door, separating rod
from forearm tube.
b. Remove shoe screws and flip shoe 180° as shown in Fig.
10. Re-attach shoe to door.
c. Re-assemble arm, as in steps 3 & 4 on page 8.
d. Verify that closing force is no more than 15 lbs when
measured one inch from door edge to comply with ANSI
A156.19.
BACKCHECK
Fig. 10
For 4640 series only
STANDARD
INSTALLATION
LoCATInG CAUTIon / AUTomATIC Door DECAL
1. Locate one decal on each side of door, near latch area to meet
ANSI A156.19-2007 code requirements. Decal must be located
at 50" (+/- 12") from the floor to the center line of the sign. The
decal location must be visible without interference from door
trim or auxiliary door hardware.
2. Clean the 6" x 6" area where decal is to be placed. Apply decal
by removing the backing and "rolling" it onto door. This will help
prevent air bubbles from being trapped under decal.
AUTOMATIC
CAUTION
DOOR
SHOE POSITIONED
FOR INCREASED
POWER AT LATCH
9