User Manual

FIGURE 4 - MOUNTING DETECTOR
ON A STEEL SURFACE
3.2 Instructions for Mounting Plate
The mounting plate can be used for mounting the DV1201 and
DV1221 onto specific surfaces such as steel and concrete (see
Sections 3.4 and 3.5). The mounting plate also provides an
adaptation hole layout for use in replacing the Securitas SSD70
and the Cerberus GM31,35 GM550 or Arrowhead 3810 detec-
tors (see figure 3).
V = mounting holes for DV1201/DV1221 (threaded holes)
S = mounting holes for DV1201/DV1221 (when replacing
Securitas SSD70)
C = mounting hole for DV1201/DV1221 (when replacing
Cerberus GM31,35 GM550 or Arrowhead 3810)
X = DV1215 drilling pattern on concrete
B = mounting hole for expansion plug
3.3 Direct Mounting the DV1201/DV1221
on a Steel Surface
In certain cases, it is advisable to mount the detector directly
onto a steel surface using
the bolts provided and
threaded holes (made by the
installer).
Mounting instructions for
direct mounting on steel.
1. Define the exact location
of the DV1201/DV1221
when mounted. Hold the
mounting plate in position
on the steel surface.
2. Using the felt pen and
the mounting plate as a
template, mark the
location of the three
threaded holes (see
holes marked “V” in
figure 9).
3. Drill three holes, using
a #29 drill, at least
7/16” deep (see draw-
ing) in the three posi-
tions marked.
4. After drilling the holes, tap them with a 8-32 tap, using a little
cutting oil to lubricate the tap. After tapping the holes, use a
7/16” diam. drill to smooth the surface around the hole and to
remove burrs.
5. Mount the detector to the steel surface using the three 8-32
screws provided (see figure 10).
6. If a DV1215 Test Transmitter is used, it can be mounted in
the lower right corner of the detector.
3.4 Indirect Mounting of DV1201/DV1221
on a Steel Surface
In some cases, indirect mounting of the DV1201/DV1221 detec-
tors may be advisable:
• Use the mounting plate when replacing Securitas SSD70,
Cerberus GM31,35 GM550 or Arrowhead 3810.
• Use the DV1212 Welded Mounting Plate if drilling on the pro-
tected surface is impractical or impossible.
3.5 Mounting the DV1201/DV1221 on Concrete
Surface mounting with the mounting plate.
In order to mount the DV1201/DV1221 on concrete, a mounting
plate is always required. Follow the instructions below.
FIGURE 5 - MOUNTING THE DETECTOR
ON CONCRETE
1. Define the exact location of the DV1201/DV1221 and hold
the mounting plate to the wall.
2. Using the felt pen, mark the location of the hole for the
expansion plug on the wall (see drawing).
3. Drill a hole using a 1/2” diam. drill on the spot marked. Be
sure the expansion plug is set flush with or below the sur-
face of the wall.
4