Kongsberg Simrad IS12, Manual, Page: 23 / 40

Instruction Manual
23
E04252
4 INSTALLATION
4.1 Instrument Head Installation
All IS12 instrument heads are a standard 110 x 110mm (4.3x
4.3in) size, and can be mounted either from the front or the rear.
4.1.1 Front Mounting
Fig 4.1 - Front Mounting
Fig 4.2 - Clearance Required
Behind Bulkhead
Front mounting (Fig 4.1) is the standard method of fitting and
is the most straightforward. When mounting the instrument
head it is important to ensure that there is adequate clearance
behind the bulkhead for the rear of the instrument with the
cables inserted - allow at least 65mm (2.5 in) clearance (Fig 4.2).
Additionally, the instrument should not be fitted to a surface
that has a curve greater than 1mm (
1
⁄
25
in) across the mounting
area. If fixing to an uneven surface, care should be taken not
to overtighten the screws. When choosing a location, consider-
ation should be given to the water integrity of the gasket seal if
the surface is not flat. IS12 is designed to be weatherproof, but
the rear of the instrument case with its electrical connections
should be protected from moisture as far as possible.
Tools required for installation -
-Drill
- 85mm (3.4in) hole saw
- 2.5mm (0.09in) drill bit
- Countersinking bit
Using the self adhesive template supplied, drill the central
aperture for the instrument case using the hole saw, then the
four fixing holes as indicated on the template. If the instru-
ments are to be fixed to a GRP bulkhead, the fixing holes
should be countersunk after drilling, to stop the screws split-
ting the gelcoat.
ctd -
65mm (2.5in)
minimum