Enclosure Installation; Mounting Procedure - mcmurdo E3 Owner's Manual

7. ENCLOSURE INSTALLATION

7.1 Siting
The enclosure should be mounted upright against a vertical bulkhead. Alternately, it
may be mounted horizontally on a flat surface, such as a cabin roof. No other
orientations are recommended.
If you have a float-free E3 it is critical that you choose a position where the released
EPIRB will not get trapped by overhangs, rigging, aerials etc, should the vessel
ever sink. An expanse of flat surface is required to allow the enclosure lid to eject.
Use the list below to choose a suitable mounting position...
• Mount on the outside of the vessel's structure.
• Mount close to the vessel's navigation position.
• Consider ease of access in an emergency.
AVOID
• Positions with insufficient space for lid ejection and maintenance.
• Positions within 1m (3') of any compass equipment.
• Mounting within 2m (6') of any Radar antenna.
• Direct impact from waves
• Siting where damage is likely.
• Exhaust fumes, chemical and oil sources.

7.2 Mounting procedure

The enclosure mounts against a flat surface using 4 fixing points. See illustration for
mounting dimensions, or use the backplate of the enclosure as a marking guide. To
do this, pull out the R-shaped clip and remove the enclosure lid. Note how the E3
fits then remove it to somewhere dry (its sea switch is now armed).
Offer the back plate into the chosen position and mark through the mounting holes.
The enclosure is supplied with a set of 25mm (1") stainless steel fixings. If you are
using the nuts and bolts, drill 6mm (1/4") holes where you have marked. You will
need a 4mm Allen key to tighten the bolts. If the rear of the mounting surface is
inaccessible, use the self-tapping screws supplied. Always fit washers under heads
of the screws to avoid damaging the plastic.
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