dormakaba 8900 FH/FHJ/FHP Installation Instructions
08279151
09-2019
8900 Surface Applied Closers
8
Adjust closing speeds
Adjust hold open
5
Adjustments
Confirm closer spring size prior to making any
closing speed adjustments.
Do not back valve heads out beyond closer casting.
Door should close in 3 to 6 seconds from 90º.
Maximum opening angle is 180º.
Do not close valves completely.
5.1 Adjust closing speeds: sweep, latch, backcheck, delayed action
Fig.11
Increase
Decrease
Increase
Decrease
Backcheck
Sweep, Latch
& Delayed Action
5.2.1 Loosen hold open nut.
5.2.2 Open door 3° - 5° before desired hold open
position.
5.2.3 Tighten hold open nut securely.
5.2.4 Pull door closed.
5.2.5 Open door to hold open position.
(Do not push door beyond hold open position. An
auxiliary stop must be used to limit door swing.)
5.2.6 To disengage, pull door closed until hold open
releases and door closer takes over.
5.2 Adjust optional hold open
Fig.12
+
-
+
-
-
+
+
-
-
+
S
BC
L
DE
L
PO
S
S
L
NOTE: Backcheck positioning is shipped in the “ON” fully CW position.
NOTE: Backcheck positioning must remain “ON” for
parallel arm
mounts
.
NOTE: Backcheck position will advance approximately 15° in the “ON”
position.
NOTE: Turn of backcheck positioning by rotating valve CCW.
NOTE: 8907 has no spring power adjustment. 8907 uses a size 7
spring designed for unusually large or heavy doors.
Hold
open nut