User's Guide

English
107
Caring for Your Radio
 The APX 4000
radio casting has
a vent port that
allows for
pressure
equalization in the
radio. Never poke
this vent with any
objects, such as
needles,
tweezers, or
screwdrivers. This
could create leak
paths into the
radio and the
radios
submergibility will
be lost.
 (For APX 4000 R
Radios Only)
The APX 4000 R radio is designed to be
submerged to a maximum depth of 6 feet, with a
maximum submersion time of 2 hours.
Exceeding either maximum limit may result in
damage to the radio.

Vent
Port
 (For APX 4000 R Radios Only)
Elastomer technology materials used for seals
in rugged portable radios can age with time and
environmental exposure. Therefore, Motorola
recommends that rugged radios be checked
annually as a preventive measure in order to
assure the watertight integrity of the radio.
Motorola details the disassembly, test, and
reassembly procedures along with necessary
test equipment needed to inspect, maintain and
troubleshoot radio seals in the radios service
manual.
 If the radio battery contact area has been
submerged in water, dry and clean the radio
battery contacts before attaching a battery to the
radio. Otherwise, the water could short-circuit
the radio.
 If the radio has been submerged in water, shake
the radio well so that any water that may be
trapped inside the speaker grille and
microphone port can be removed. Otherwise,
the water will decrease the audio quality of the
radio.
 Do not disassemble the radio. This could
damage radio seals and result in leak paths into
the radio. Any radio maintenance should be
performed only by a qualified radio technician.
