Securitron MXD-62, MXD-32 Installation And Operating Instructions Manual

PN# 500-12800 Page 1
Rev. A.2, 6/00

SECURITRON MODEL MXD-32, MXD-62 DOOR MOVEMENT EXIT DELAY

INSTALLATION AND OPERATING INSTRUCTIONS

1. DESCRIPTION

The MXD consists of several components which, when combined with a Magnalock, will
produce an initiate signal for delayed exit as controlled by Securitron’s XDT logic timer when
a person pushes on the door and moves it a modest distance.

The specific components within the MXD “kit” are:
A mounting sub-plate which affixes the magnet body to the door frame or header.
A sealed proximity switch array which is also mounted on the sub-plate. This changes state

to provide the initiate signal.
A stamped, stainless steel housing which covers the magnet body and proximity switch array.
A sealed permanent magnet affixed to a bracket that mounts behind the strike plate. As this

unit moves away from the proximity array, the array switches.
A special sex bolt with internal spring that permits the door to move away from the strike

plate (the strike plate remains secured to the magnet body) so as to create the initiate signal
when a person pushes on the door opening it up to one inch.

 Copyright, 2000, all rights reserved • Securitron Magnalock Corp., 550 Vista Blvd., Sparks NV 89434, USA

Tel: [phone] • (800) MAGLOCK • Fax: [phone] • Website: www.securitron.com

An ASSA ABLOY Group company

Rev. A.2, 6/00 Page- 2

Use of the MXD permits delayed exit without the need to alter the existing door latch and
hardware. The relatively large door movement that it supports (up to one inch) eliminates the
potential problem of false triggering if the door is rattled or subjected to wind loads. It is also
highly tamper resistant in the event that someone would wish to defeat its safety function of
allowing people to exit.

2. PHYSICAL INSTALLATION

2.1 DETERMINING HORIZONTAL OR VERTICAL MOUNT AND APPLYING TEMPLATE

The MXD can be mounted horizontally under the frame header or vertically along the frame.
Once you have selected the orientation for your installation, apply the template to set your
hole drilling positions. To apply the template, close the door (be sure it latches) and note that
the template has a folding line on it. The magnet mounting “sub-plate” is on one side of the line
and the strike plate/permanent magnet bracket is on the other. Position the fold in the template
along the edge the door stop makes with the door surface so that the sub-plate portion of the
template extends on to the door stop and the strike/permanent magnet bracket portion extends
on to the door surface. If you have a swing through type aluminum frame glass door, there
is no door stop so you simply position the template fold line on the edge between the door
surface and frame stile. In planning your installation for this type of door, a special
consideration comes into play. First, before drilling any holes, you want to be sure that the
aluminum door rail is wide enough to support the sex bolt. The MXD sex bolt is 1” (25MM)
diameter which is much thicker than normal magnetic lock sex bolts. This type of door is made
with extrusion widths which vary widely but some are so narrow that you can only mount the
MXD sex bolt when you are using the model 32 lock. Some others will accept a model 62 lock
but only when you are using the offset strike.

To determine in advance whether your door and the Magnalock that you intend to use will
accept the MXD sex bolt, just hold the template so that you can visually see the center point of
where the sex bolt will go into the door rail. Assure yourself that a 1” diameter hole around this
point will not strike the glass or any support rods internally.

Note: if you have an aluminum frame glass door with a blade stop, see the next section as the
template is used differently. Otherwise, the template will work on horizontal or vertical mounts
and on left hand or right hand doors but be sure that the edge of the template is flush to the
corner of the door stop for best mounted appearance (the MXD housing will reach to the corner
of the door stop).

Tape the template into position and using a center punch, mark the hole locations on the door
and frame. The template will indicate the number and positions of the hole locations as well as
the hole diameters. This depends on which Magnalock type is being used. Note that if the door
stop is narrow, you may need to add a filler plate to create a wide enough mounting surface for
the sub-plate.

2.2 TEMPLATE USE ON AN ALUMINUM FRAME GLASS DOOR WITH BLADE STOP

A blade stop is so narrow (around 1/8”) that nothing can be mounted on it. Therefore, you
cannot place the folded edge of the template in the corner made by the stop and door surface
as you will not be mounting on the stop. You will be mounting the sub-plate adjacent to the
stop directly on the frame extrusion. To use the template in this exceptional situation, cut it with
a scissors along the fold line. To mark the strike plate/permanent magnet bracket holes, open
the door slightly and insert the template behind the blade stop until it just touches the door
frame. Then allow the door to fully close (this will capture the template). You can then

Rev. A.2, 6/00 Page- 3

accurately punch your mounting holes for the strike plate/permanent magnet bracket just as if
the blade stop was not present.

To mark the holes for the sub-plate, you will use the other half of the template. Normally, you
would position its fold line edge to rest against the door surface but the blade stop is in the way.
Simply measure the distance from the door surface to the surface of the blade stop and
“subtract” that distance from the template half by either cutting the template or re-folding it. The
distance is usually around 3/8” (9.5MM) but it will vary from door to door depending on the
thickness of the blade stop and the spatial point at which the door is closed.

An alternate method for mounting the sub-plate dispenses with the template half and uses the
sub-plate as its own template. To employ this method, close the door and measure back from
the surface of the door past the blade stop 5/8” (16MM) for a model 32 Lock or 9/16” (14MM)
for a model 62 Lock. The best way to do this is to make two measurements and mark two
points each of which is the correct distance away from the surface of the door. Then a line can
be drawn between the two points. The sub-plate may be used as a straight edge for drawing
this line.

Align the front edge of the sub-plate to this line and you have achieved the correct backset.
To set the lateral position of the sub-plate, move it away from the frame corner about 1/8”
(3MM). This will allow the housing cover to fit over it and still produce an attractive mount that
appears to reach to the frame corner. Then mark and drill the mounting holes for the sub-plate.

2.3 IF THE DOOR IS THINNER OR THICKER THAN STANDARD

The MXD sex bolt is dimensioned to precisely fit a 1 3/4” (44.5 MM) thick door which is a
common size. If the door is a different thickness, contact the factory. Securitron can supply
washers for a thinner door, which go under the head and key in to the anti-rotation pins while
including new anti-rotation pins. For a thicker door, the bolt may be partially unscrewed to
expand it for use with up to a 2” thick (51MM) door. If you do this, be sure to install Threadlock
on the threads (Threadlock is furnished in a capsule with the MXD). When the bolt is
“expanded” to suit a thicker door however, its ability to allow to door to move for delay initiation
is proportionately reduced. The factory, however, can supply spacers to adapt the bolt to thicker
doors while retaining full door movement distance.

2.4 MOUNTING THE PERMANENT MAGNET BRACKET, MXD SEX BOLT AND STRIKE

Note the assembly drawing in Figure 1. The first step after all the holes are drilled from the
template is to install the permanent magnet bracket. The model 62 version comes with four
self tapping screws to hold the bracket to the door and the model 32 version comes with two.
Note that this bracket is not handed. It can be flipped to place the permanent magnet
(concealed in an aluminum block) either to the right or the left to line up with the proximity switch
array on the sub-plate. The proximity switch array can also be transferred to either side of
the sub-plate (the holes are drilled for either position). The reason for this flexibility is to
maximize wiring options. In the case of a concrete filled header, for example, the cable can
not usually be pulled up into the header. A flex conduit fitting can be attached to either end of
the cover and the proximity switch array and permanent magnet pack would then be positioned
on the opposite side of the fitting.

Your next task is to mount the special MXD sex bolt. Be sure you have checked the previous
Section which covers a situation that deviates from standard sex bolt installation. Then, note
that the bolt includes two pins under the head which will go in two separately drilled holes for
anti-rotation. The pins act as their own template. Unscrew the threaded base plate of the bolt
and insert the bolt into the 1” hole which you should have previously drilled. Tapping the bolt
head will cause the pins to mark the door. Remove the bolt and drill 3/16” (5MM) diameter