Securitron MK_Series - Manual

Securitron Magnalock Corp. www.securitron.com
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© Copyright, 2011, all rights reserved PN# 500-11700
Page 1 Rev. D, 11/11
SECURITRON MK SERIES MORTISE KEYSWITCH PANELS
INSTALLATION AND OPERATION INSTRUCTIONS
1. DESCRIPTION
The MK series Mortise Keyswitch Panel permits use of any standard US 1-1/4" or 1-1/8"
mortise cylinder to operate a switch. A 1 1/2" cylinder can be used if a spacer ring is added to
make it protrude 1/4" from the rear of the face plate. The MK can be used for electric lock
control, alarm panel arming and similar requirements. The assembly supplied includes a face
plate with mounted bicolor LED, bracketry and one or two switches. The user must supply the
cylinder and cam as this is typically incorporated into a master key system.
The part numbering for the series works as follows: MK denotes a brushed stainless steel single
gang outlet box cover mount and MKN denotes a stainless steel 1-3/4" narrow style plate. The
unit is delivered standard with a spring loaded momentary SPDT switch. The addition of the
suffix "A" denotes an alternate action switch.
A second switch ordered separately can be affixed to the unit so that turning the key left will
depress one switch and turning it to the right will depress the other. Momentary and alternate
switches may be combined on the same unit. To order extra switches, the Securitron part
number for a momentary switch is MKS. For an alternate switch, (push on, push off), the part
number is MKSA. The addition of the suffix, "2" denotes a DPDT switch (MK2, MK2SA etc).
2. ASSEMBLY AND PHYSICAL INSTALLATION
Once you have the cylinder you plan to use, note that it has a cam which is turned by the key.
Numerous cams are supplied by various cylinder manufacturers but they come in two main
types: bat and cloverleaf. The MK series is designed to work with any cam which simplifies
installation. It is however necessary for the switch to be mounted in the back bracket by the
installer at an appropriate position to suit the cam. This is why the unit is delivered with the
switch unmounted.
You must therefore start by assembling the unit including the face plate, cylinder, back bracket
and switch and make sure that the cam operates the switch reliably before mounting the unit on
the wall. Referring to the drawing, note that the switch can be mounted on the right or the left
hole in the back bracket. This will result in operation by turning the key to the right or the left
respectively. Bat type cams are generally preferred. The switch height in the mounting
hole should be set so that the cam makes reliable contact with the switch and fully
depresses it. Experimentation will show you the correct position. With a cloverleaf cam, the
cam's shoulder can operate the switch when it's mounted in the left or right hole. With some
cloverleaf cams, the switch can be mounted in the center hole with operation being obtained
when the key is turned to either the right or left. After you are satisfied, freeze the position of
the switch with the included hardware being sure to use the lock washer.
Note that when you install the brass ring-nut to hold the cylinder in position within the back
bracket, use the supplied threadlock in the capsule on the brass ring-nut threads. This
will prevent the assembly from loosening up over time. The complete assembly may then be
attached to the wall or back box utilizing the #6 Spanner or standard screws furnished.
Note that for use on drywall, the single gang versions of the MK come with a black plastic
mounting frame. This clamps itself to the drywall and then allows you to screw the MK’s single
gang plate to it. To install the mounting frame, you must prepare a rectangular cut-out in the
drywall using a drywall saw. To mark for sawing, the mounting frame acts as its own template.
Hold the frame against the wall and trace around the inside with a pencil. The rectangle you
mark out will be smaller in size than the cut-out you will require because of the thickness of the