2820A-XX & 2825A-XX SERIES TWO DIVER COMMUNICATOR USER MANUAL
282XA-UM
REV 5.0
15
4 OPERATION
The AMCOM II portable diver communicators are supplied in a durable yellow enclosure. To
open the enclosure, release the two latches on the front of the unit and raise the lid. The lid of
the communicator can be removed by sliding the lid to the side.
The AMCOM II panels are graphically divided into sections starting from left to right: Tender
Controls, Diver Controls, and Options. Items within these areas are functions or controls
relating to the Tender, Diver(s) or Optional items.
WARNING: When operating your Amron Diver Communicator from AC mains, it is
critical to use a Ground Fault Circuit Interrupter (GFCI) and/or isolation transformer for
tender and diver safety. Surges and spikes are common on AC lines found onboard
ships, from local generators, or at the end of a long extension lines. These spikes can
exceed 1kV! Such spikes can be high enough to cause the input fuses on the power
supply to blow and, in extreme cases, actually damage the charging circuitry. Amron
uses a medical grade power supply to isolate such faults to ensure that they will not
cause a safety issue for the diver or tender. Amron cannot guarantee that non-Amron
power supplies meet the same high standards and strongly advises against using any
such device to power your diver communicator.
4.1
BATTERY CHARGING
4.1.1
To charge the battery after use, simply connect power cord to an AC outlet rated
from 90-264 V
AC
, 50-60 Hz. The charger will automatically adjust to the input
voltage.
4.1.2
The unit should be placed on charge and left on charge until the unit is to be used
again. This ensures the unit will always be ready to use, and the batteries are fully
charged. The charger is designed not to damage the batteries when left on
continuous charge. Full charge will occur in ten hours (depending on the battery
age and the surrounding temperature). If the unit is in constant use (daily) it is
recommended the unit be left on charge during the weekend to top off the
batteries. Batteries must be recharged periodically, a minimum of at least once
every six months.
4.1.3
An internal 12V
DC
sealed lead-acid battery is supplied standard for backup
operation in the event of a loss of AC power. The switch over to battery operation is
completely automatic, and occurs whenever AC power is interrupted. The internal
12V battery is maintained at full charge while the unit is operating from AC power.
AC power indicator on the option panel confirms the presence of AC power.
4.1.4
Operating time for the 12V rechargeable battery depends on multiple factors such
as age of the battery, number of cycles, and temperature. A sealed lead-acid
battery typically has a life span of 300 cycles or 3 years, and can be charged at any
time.
NOTE
: Do not continue to operate the rechargeable battery below the Low Battery Condition
or permanent damage will occur. When the battery condition indicator turns to red, turn the
unit off and charge batteries.
Summary of Contents for 2820A
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