dormakaba 8956 T PKT90 Installation Instructions
08280131
09-2019
8900 Surface Applied Closers
5
Adjust closing speeds
Adjust spring force
Secure covers
3
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 90º.
Do not close valves completely.
3.1 Adjust closing speeds: sweep, latch, backcheck, delayed action
Fig.5
Increase
Decrease
Increase
Decrease
Backcheck &
Delayed Action
Sweep & Latch
3.1.1 Adjust
closing sweep speed
: 90° to start of latch speed.
•
Increase sweep speed: Turn valve counter-clockwise
•
Decrease sweep speed: Turn valve clockwise.
3.1.2 Adjust
closing latch speed:
15° to close.
•
Increase latch speed: Turn valve counter-clockwise
3.1.3 Adjust
opening backcheck:
beginning at 65°.
•
Increase resistance: Turn valve clockwise
•
Decrease resistance: Turn valve counter-clockwise.
3.1.4 Adjust
closing delayed action:
angle 90° to 65°.
•
Increase delayed action: Turn valve clockwise
•
Decrease delayed action: Turn valve counter-clockwise
+
-
+
-
-
+
+
-
-
+
S
BC
L
DE
L
PO
S
S
L
3.2 Adjust spring force
Fig.6
Increase
Decrease
•
Decrease force:
turn counter-clockwise; 8 turns max.
•
Increase force:
turn clockwise; 13 turns max.
4
Install covers
Fig.7
Snap valve
adjustment
wrench inside
cover.
4.1.1 Place tab in cover slot, opposite main
arm.
4.1.2 Place cover over closer and fasten
securely with screws provided.
LH
