Dormakaba 8956 T PKT90 User manual

8956 T PKT90
Pocket door track mount in 90° pocket (PKT 90)
(Track on wall)
Installation instructions
08280131 – 09-2019
| EN |

28900 Surface Applied Closers 09-2019
08280131
dormakaba 8956 T PKT90 Installation Instructions Table of Contents
Table of contents
1 Technical specifications 3
. Overview 
. Tools recommended 
. Handing the door 
2 Instructions - parallel mount 4
. Installing surface closer 
. Assemble and secure track to wall 
. Securing main arm to closer 
3 Adjustments 5
. Adjust closing speeds: sweep, latch, backcheck,
delayed action 
. Adjust spring force 
4 Install covers 5

dormakaba 8956 T PKT90 Installation Instructions
08280131 09-20198900 Surface Applied Closers 3
Technical specifications
1 Technical specifications
. Overview
Caution: sex nuts are required for attachment
of components to unreinforced doors and to
wood or plastic faced composite type fire doors,
unless an alternative method is identified in the
individual door manufacturer’s listings.
Maximum door opening degree is 90°.
Know the swing of the door which is being
installed prior to installation.
Verify closer spring size prior to installation.
Make sure door efficiently operates prior to
installing closer.
Drill bits: # Phillips screwdriver
Metal: /” drill bit; /-
tap
/” flat head screwdriver
Wood: /” and /” bit mm hex key
/” box wrench
. Tools recommended
Table 
. Handing the door
Fig.
Hinge Hinge
Interior side of door
Left hand door (LH) Right hand door (RH)
Exterior side of door

dormakaba 8956 T PKT90 Installation Instructions
08280131 09-20198900 Surface Applied Closers
4
Surface closer
Track
Arm
2 Instructions - parallel mount
. Installing surface closer
. Assemble and secure track to wall
Fig.
Fig.
.. Reference template .
.. Secure closer body to door.
NOTE: Ensure pinion is oriented toward the hinge.
Pinion
LH RH
L
CC
L
. Securing main arm to closer
.. Assemble track.
NOTE: Outer two screws pass through end blocks.
Fig.
45°
C
.. Prelode arm by placing wrench on bottom pinion.
.. Rotate wrench ° TOWARD LATCH edge of
door.
.. Secure main arm top top pinion with pinion
screw.
.. Insert slide shoe and end blocks into track.
.. Secure track to wall.
End block
Slide shoe
End block
Pinion
screw
Pinion
Rotate
Main
arm

dormakaba 8956 T PKT90 Installation Instructions
08280131 09-20198900 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  to  seconds from º.
Maximum opening angle is º.
Do not close valves completely.
. Adjust closing speeds: sweep, latch, backcheck, delayed action
Fig.
Increase
Decrease
Increase
Decrease
Backcheck &
Delayed Action
Sweep & Latch
.. Adjust closing sweep speed: ° to start of latch speed.
• Increase sweep speed: Turn valve counter-clockwise
• Decrease sweep speed: Turn valve clockwise.
.. Adjust closing latch speed: ° to close.
• Increase latch speed: Turn valve counter-clockwise
.. Adjust opening backcheck: beginning at °.
• Increase resistance: Turn valve clockwise
• Decrease resistance: Turn valve counter-clockwise.
.. Adjust closing delayed action: angle ° to °.
• Increase delayed action: Turn valve clockwise
• Decrease delayed action: Turn valve counter-clockwise
+
-
+
-
-
++
-
-
+
S
BC
L
DEL
POS
S
L
. Adjust spring force
Fig.
Increase
Decrease • Decrease force: turn counter-clockwise;  turns max.
• Increase force: turn clockwise;  turns max.
4 Install covers
Fig.
Snap valve
adjustment
wrench inside
cover.
.. Place tab in cover slot, opposite main
arm.
.. Place cover over closer and fasten
securely with screws provided.
LH

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