Dormakaba 7400 DS Manuale utente

7400 DS/DST/SDS/SDST

Door saver and spring door saver arms

with thumb turn and key turn hold open

Installation instructions

08279441 – 01-2021

| EN |

27400 Surface Applied Closers 01-2021

08279441

dormakaba 7400 DS/DST/SDS/SDST Installation Instructions Table of Contents

Table of contents

1 Technical specifications 3

. Overview 

. Tools recommended 

. Handing the door 

. Closer system 

2 Instructions - parallel mount 4

. Installing (optional) drop plate and

surface closer 

. Secure door saver arms

(DS/DST or SDS/SDST) 

. Secure soffit plate to frame: spacer block,

blade stop, or narrow frame bracket 

. Securing main arm to closer 

. Adjust hold open (DST/DSK units only) 

3 Adjustments 7

. Adjust closing speeds: sweep, latch, backcheck,

delayed action 

. Adjust spring force 

4 Install covers 8

dormakaba 7400 DS/DST/SDS/SDST Installation Instructions

08279441 01-20217400 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 110°.

Drill bits: # Phillips screwdriver

Metal: /” drill bit; /-

tap

/” flat head screwdriver

Wood: /” and /” bit /”, /”, mm hex key

/” box wrench ” 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

Hold open range is from 85° to 110° 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.

. Closer system

Fig.

. Door closer

. Door saver arm

. Dust cap

. Bumper and screw

. Flat head combo screws

. Pinion screw













dormakaba 7400 DS/DST/SDS/SDST Installation Instructions

08279441 01-20217400 Surface Applied Closers

Surface closer and drop plate

Arms

2 Instructions - parallel mount

. Installing (optional) drop plate and surface closer

. Secure door saver arms (DS/DST or SDS/SDST)

Fig.

Fig.

.. Reference templates , .

.. Secure (optional) drop plate and/or closer

body to door.

NOTE: Ensure pinion is oriented away from hinge.

NOTE: NFHD: Do not drill hole in frame for spacer

block.

Pinion

LH RH

DP

5/32"

LH RH

DS/DST units

only

LH RH

Bumper

.. Secure the bumper.

.. Secure spring door

saver (SDS)

mechanism.

SDS/SDST units

only

dormakaba 7400 DS/DST/SDS/SDST Installation Instructions

08279441 01-20217400 Surface Applied Closers 5

Soffit

.. Secure spacer block and

soffit plate to frame.

.. Use included fasteners.

Standard with spacer block With blade stop (BSHD)

With heavy duty narrow

frame bracket (standard with

SDS/SDST) (NFHD)

.. Secure blade stop, spacer block,

and soffit plate to frame.

.. Use included fasteners.

.. Install spacer block using /”

height.

NOTE: If frame width is 4-1/2” or less,

NFHD bracket should be used.

.. Secure NFHD bracket and soffit

plate to frame.

.. Use included fasteners.

Spacer block

Soffit

plate Spacer block

Soffit

plate

Blade stop

Soffit

plate

NFHD

Spacer block

Drill same as soffit plate

Face of stop of BSHD

. Secure soffit plate to frame: spacer block, blade stop, or narrow frame bracket

Fig.

/” /”

/”

stop

dormakaba 7400 DS/DST/SDS/SDST Installation Instructions

08279441 01-20217400 Surface Applied Closers

Main arm

Adjust hold open

. Securing main arm to closer

Fig.

.. Rotate pinion ° to pre-load.

.. Attach arm PARALLEL to door.

45° 45°

. Adjust hold open (DST/DSK units only)

Fig.

.. Engage hold open: Open door

until mechanism locks onto ball

on plate.

.. Tighten thumb turn or key turn

until desired hold open force is

met.

Key turn

Thumb

turn

Ball

dormakaba 7400 DS/DST/SDS/SDST Installation Instructions

08279441 01-20217400 Surface Applied Closers 7

Adjust closing speeds

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

Check delayed action (DEL) function if supplied.

 meets lb interior barrier-free requirements.

If necessary, adjust closer spring and test pull

forces until proper forces are obtained.

Ball bearing hinges and pivots should always be

used.

Increase

Decrease

Increase

Decrease Backcheck

Sweep, latch,

delayed action

Fig.

dormakaba 7400 DS/DST/SDS/SDST Installation Instructions

08279441 01-20217400 Surface Applied Closers

Adjust spring force

Secure covers

. Adjust spring force

Fig.

Parallel mount

Closer size Max door

weight (lbs)

Door width Full turns

Interior Exterior



  ’-” --- 

  ’ ’” +

  ’” ’ +

  ’ ’” +

4 Install covers

Fig.

COV

FCSL

www.dormakaba.us

dormakaba

DORMA USA, Inc.

T: 800-523-8483

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