Dormakaba 8900 JT Bedienungsanleitung
8900 JT/JTH
Jamb track pull side mount with
hold open (JTH) and backplate (BP89)
Installation instructions
08280161 – 09-2019
| EN |
28900 Surface Applied Closers 09-2019
08280161
dormakaba 8900 JT/JTH Installation Instructions Table of Contents
Table of contents
1 Technical specifications 3
. Overview
. Tools recommended
. Handing the door
2 Instructions - track mount 4
. Installing backplate and surface closer
. Assemble and secure track
. Securing main arm to closer
3 Adjustments 6
. Adjust closing speeds: sweep, latch, backcheck,
delayed action
. Adjust hold open (optional)
. Adjust spring force
4 Install covers 7
dormakaba 8900 JT/JTH Installation Instructions
08280161 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 180°.
Arrow on backplate points upward.
Hold open range is from 80° to 145° with
optional hold open kit.
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 8900 JT/JTH Installation Instructions
08280161 09-20198900 Surface Applied Closers
4
Backplate and surface closer
Track
2 Instructions - track mount
. Installing backplate and surface closer
. Assemble and secure track
Fig.
Fig.
BP LH
.. Reference template and
.
.. Secure backplate. Arrow points downward.
.. Secure closer body.
NOTE: Ensure pinion is oriented toward the hinge.
RH
Pinion
.. Attach arm to slide shoe using
screw supplied.
.. Tighten securely.
.. Insert slide shoe, rubber stop, hold
open mechanism (if necessary), and
end blocks into track.
.. Secure track to door.
NOTE: JTH Units ONLY: Hold open
mechanism and slide shoe must be
installed with arrows pointing AWAY from
the door hinges.
NOTE: Mounting screws pass through
end blocks.
End block Slide
shoe
End
block
Rubber
stop
Hold open
mechanism
Hold open
mechanism
Arrow
Screw
C
LC
L
C
L
C
L
dormakaba 8900 JT/JTH Installation Instructions
08280161 09-20198900 Surface Applied Closers 5
Main arm
. Securing main arm to closer
Fig.
.. Preload arm by placing wrench on
bottom pinion.
RH
Main arm
Pinion
Pinion
screw
C
PINION
45°
RH
RH
RH
Hinge
L
.. Rotate wrench ° AWAY FROM hinge
edge of door.
.. With main arm parallel to door,
place main arm onto top pinion.
.. Secure arm to closer with pinion screw.
View from top of door
View from top of door
View from top of door
Pinion
45°
dormakaba 8900 JT/JTH Installation Instructions
08280161 09-20198900 Surface Applied Closers
6
Adjust closing speeds
Adjust hold open
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 start of sweep.
• Increase delayed action: Turn valve clockwise
• Decrease delayed action: Turn valve counter-clockwise
+
-
+
-
-
++
-
-
+
S
BC
L
DEL
POS
S
L
. Adjust hold open (optional)
Fig.
OFF
ON
.. Place the hold open mechanism in desired
position and tighten screw.
.. To adjust hold open force:
• To increase = turn CW
• To decrease = turn CCW
.. To enable: push white slide into hold open
mechanism.
.. To disable: pull white slide away from hold open
mechanism.
dormakaba 8900 JT/JTH Installation Instructions
08280161 09-20198900 Surface Applied Closers 7
Adjust spring force
Secure covers
. Adjust spring force
Fig.
Increase
Decrease
8916 - supplied with a size 4
8956 - supplied with a size 6
8916 ONLY - Barrier free openings: Take an opening
force reading from the pull on the door. If required,
adjust the spring force to meet the barrier-free
requirement.
• Decrease force: turn counter-clockwise; turns max.
• Increase force: turn clockwise; turns max.
Depending on opening conditions, a door adjusted to
meet barrier-free forces may not have sufficient power
to reliably close and latch the door.
Track mount
Closer size Max door
weight (lbs)
Door width Full turns
Interior
’
’” +
’ +
’”
+ ’ +
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.
RH
www.dormakaba.us
dormakaba
DORMA USA, Inc.
T: 800-523-8483
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