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Mound Surfaces
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TM-5-6350-262-14-3 Processor Vibration Signal MX-9442( )/FSS-9 (V) FSN 6350-228-2524 Detector Vibration Signal DT-546 ( )/FSS-9 (V) Manual
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Section IV. INSTALLATION AND CIRCUIT LINEUP
(b) Using the four holes in the vibration pickup assembly as a template mark the mounting surface.
(c) Remove the enclosure and drill four pilot holes using a number 18 drill.
(d) Enlarge the four pilot holes using a 9-32 inch diameter drill.
(e) Secure the vibration pickup assembly to the panel using four 114- 20 x 1 inch long machine screws
and elastic stop nuts. Orient the mounting hardware with the elastic stop nuts that are inside the enclosure.
(2) If the vibration pickup assembly is being secured to porous grill a backing plate will be required.
(a) Fabricate a backing plate per details outlined in figure 2-.
(b) Locate the mid section of the panel measuring from top to bottom and side to side between supporting
or rigid members.
(c) Secure the vibration pickup assembly to the porous grill using the backing plate and four 1/4 -20 x 1
inch long machine screws and elastic stop nuts. Orient the mounting hardware with the elastic stop nuts that are inside
the enclosure.
b. Processor (fig. C-3).  Securing of the processor enclosure to various types of mounting surfaces such as wood,
metal or masonry requires some ingenuity on the part of the installer.  Installations are not limited to the various
suggested methods of approach that follow.
(1) Wood.  This type of mounting material presents the least difficulty. Position the enclosure in place,
considering adjacent approaches for ease in interconnecting. Using the enclosure mounting holes as a template mark
the mounting surface. Remove the enclosure and drill two pilot holes (smaller than the number 10 wood screws) in the
mounting material. Secure the enclosure in place using two number 12 x 3/4 inch long wood screws and hat washers.
(2) Metal. These surfaces may consist of net or corrugated sheet metal, angle iron supports or steel I-beams.
Secure a convenient size wooden mounting plate (3/4 inch thick plywood) to the metal surface using number 12 x 1 1/2-
inch long sheet metal screws or construction type hanger clamps. Secure the enclosure to the wooden mounting plate
using the procedure in step (1) above.
(3) Masonry. These surfaces may consist of brick, solid concrete, or blocks with hollow cores. For both brick;
anal solid concrete amounting surfaces, secure a convenient size wooden mounting plate (3/4 inch thick plywood) to the
masonry surface as follows:
(a) To secure the wooden mounting plate to brick or solid concrete perform the following steps:
1. Drill four1/4 inch holes in each corner of the wooden mounting plate 1 inch in from each side
2. Using the wooden mounting plate as a template, mark the location of the four holes in the brick or
concrete wall.
3. Using a carbide tipped masonry drill (i/2 inch dia.) drill four holes approximately 1 inch deep.
4. Anchor the STAR TAP-IN in the masonry and secure the wooden mounting plate to the masonry
using four 1/4 - 20 x 1 1/2 inch long screws and flat washers.
5. Secure the enclosure to the wooden mounting plate using the procedure in step (1) above.
(a) To secure the wooden mounting plate to blocks with a hollow core perform the following steps:
1. Drill four 1/4 inch holes in the wooden mounting plate and position them to align with the center of
the hollow core area of the blocks.
2. Using the wooden mounting plate as a template, mark the hole locations to align with the hollow core
area of the block.
3. Using a carbide tipped masonry drill (618 inch dig), drill four holes through to the hollow core.
4. Anchor the wooden mounting plate to the hollow cored blocks using four 10 - 24 threaded toggle
bolts and flat washers.
5. Secure the enclosure to the wooden mounting plate using the procedure in step (l)above.
(4) Porous Grill. This surface is the same as described in paragraph 2-11a above. A backing plate will be
required to facilitate securing of the enclosure.
(a) Fabricate a backing plate measuring approximately 10 x 9 x V8 inch thick.
(b) Using the processor enclosure as a template mark the four mounting hole locations.
(c) Drill four holes in the backing plate using a 9/32 inch drill.
(d) Fasten the processor enclosure to the porous gill using four 1/4-20 machine screws and- elastic stop
nuts.
2-12. Interconnection
a. General.  Interconnect each enclosure with 112 inch conduit using standard electrical practices. Reference
figures 2-1 and F-1 (located at rear of manual) for conduit and interconnection configurations.
NOTE
Use of pull boxes (without tamper protection) on long conduit runs exposes
interconnecting wires. Unprotected pull boxes should not be used.
b. Cable Runs. Use shielded cable for the signal
2-7

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