GF3000 SERIES INSTALLATION MANUAL
Installing a GF3000 Series Lock
Installing the Lock - BRD
•
INSTALLING THE MAGNET AND ARMATURE
1) Preparing the Floor for the GF3000BRD Magnet:
Since the GF3000BRD magnet is installed in the floor directly below the bottom rail of the door, a
threshold box (that will hold the magnet) that is inset into a pocket (
a
) in the floor, and a trench
(
b
) for the electrical conduit is required.
NOTE: Retrofit Installations - You may find that conditions vary from site to site after the
threshold plate (c) is removed. If a cement, stone, or other hard material is encountered, using
a pavement breaker or demolition hammer might be useful for chiseling out the pocket
and trench in the floor.
Using tools applicable for conditions found at the site, create a pocket that is at least 2.375” wide x 7.5”
long within the threshold area, centered directly below door’s bottom rail and furthest away from hinges.
Depth of this pocket (
d
) may vary from site to site. The guiding dimension for depth of the pocket is dis-
tance (
e
). Distance (
e
) is from top of the threshold box that is inset into the pocket to the underside of
the threshold plate.
IMPORTANT: Considerations to keep in mind for position of metal box are:
> When magnet and threshold are installed, magnet must not protrude above threshold.
> You should be able to use box’s shim washers to raise and lower magnet to proper level.
> Box centerline (
f
) must be placed on centerline of door.
The trench for the conduit should be at least 1/2” wide and deep enough so that the conduit
can be easily inserted into the 7/8” hole in end of box. Direction and length of the trench
away from the metal box may vary from site to site.
e
d
a
c
c
a
b
f
f
Page 14
