Securitron SB-MXD - Manual

Securitron Magnalock Corp. www.securitron.com
ASSA ABLOY, the global leader
Tel 800.624.5625 [email protected]
in door opening solutions
© Copyright, 2011, all rights reserved PN# 500-18500
Page 1 Rev. E, 04/11
MODEL SB-MXD DOOR MOVEMENT EXIT DELAY
INSTALLATION AND OPERATING INSTRUCTION S
1. DESCRIPTION
The Securitron SB-MXD consists of a set of components which when combined with a Magnalock
will produce an “initiate” signal for delayed exit. Functioning is controlled by Securitron’s XDT
logic timer when a person pushes on the door enough to move it a modest distance. This
distance depends on the door type and the existing gap between the door and frame but is
usually within the range of 1/2”-3/4” [13mm to 19mm].
The SB-MXD kit includes the following components and features:

A special sex bolt with an internal spring. This assembly permits the door to move
away from the strike plate even though the strike is still engaged with the magnet.
This will create an “initiate” signal when a person pushes on and moves the door up
to one inch.

Concealable magnetic contacts (Reed switch) which when installed furnish the actual
“initiate” signal after the 1/2” to 3/4” of door movement. The switch provided will
function properly on steel, wood and aluminum doors/frames.

The kit also includes two long roll pins which are to replace the standard length pins
provided with the Magnalock.
Use of the SB-MXD permits delayed exit without the need to alter the existing door latch and
hardware. The relatively large door movement provided eliminates the potential problem of false
triggering from incidental door travel due to the door being rattled or subject to wind loads.
2. PHYSICAL INSTALLATION
SPECIAL NOTE FOR MODEL 32 MAGNALOCK INSTALLATION!
When a model 32 Magnalock is installed directly to the door frame header rather than
the door stop, the large diameter head of the SB-MXD sex bolt will extend beyond the
edge of the door. This condition should be avoided for proper door clearance and
function (see Figure 1). In the situation that it is necessary to mount a model 32
directly to the header, a spacer of at least 1/2” [12.7mm] thickness should be
employed to elevate the lock magnet body away from the header. This spacer can be
furnished locally (by the installer) or through Securitron which offers several
accessory brackets that will provide the proper spacing.
DOOR STOP
SEX BOLT
HEAD
LOCK MAGNET
STRIKE PLATE
DOOR
FRAME HEADER
SEX BOLT
HEAD
LOCK MAGNET
STRIKE PLATE
DOOR
FRAME HEADER
Figure 1
Model 32 Installation