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57
Working with the Power Supply Unit
The iPSU needs no scheduled maintenance other than regular battery inspection and replacement. If the
power supply unit is equipped with a backup battery, it continues to provide voice-over-IP services in case of
emergency during a power outage. During a temporary AC power outage, the power source is switched to
the battery without interruption of the voice-over-IP service. When the AC power is restored, the power
source is switched back to the power supply unit. The switchover between the power supply unit and the
battery is automatic and instantaneous.
This section provides instructions to:
•
Replace the battery on
page 58
•
Disable the audio alert on
page 61
•
Enable the audio alert on
page 63
Note:
Reserve the battery charge during a power outage. Do not access the
Internet when the power is running on the battery. Doing so will discharge the
battery at a much faster rate and shorten the voice-over-IP service time.
Note:
You are solely responsible for periodically replacing this battery to
provide uninterruptable voice-over-IP services during a power outage. Your
service provide does not monitor the battery and is not responsible for its
replacement.
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iNID -- i3812V User Guide
58
Replacing the Battery
The battery is rated for a service life of up to five years, which varies depending on operational and
environmental conditions. The battery life expectancy depends on the operating environment as
temperature extremes shorten the battery life. The optimum operating temperature is between
–5
o
C to +50
o
C, ambient (23.0
o
F to 122
o
F).
The battery is specifically designed to use with the iNID system. Contact your service provider for battery
replacement information.
To replace the battery:
1.
Use a Phillips screwdriver to unfasten two screws (one on each side) securing the power supply battery
cover, and put them in a safe place (
Figure 11
).
Figure 11: Power Supply Unit Cover Removal
2.
Bring the battery cable and battery cable connector to visibility (located on top of the backup battery).
3.
Press down on the tension springs and pull to disconnect the battery cable connector from the battery
cable (
Figure 12
).
Remove screws from both sides of
the unit to remove the front cover.
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Working with the Power Supply Unit
59
Figure 12: Battery Connector
4.
Release the safety strap securing the battery.
5.
Remove the old battery from the housing and put it safely aside.
6.
Insert the new battery gently into the housing.
7.
Connect the battery cable connector to the battery cable.
8.
Observe the
BATTERY
indicator on the iPSU, it should light green when the i38HG and i3812V are
communicating properly.
9.
Secure the battery with the safety strap.
Note:
Be careful when removing the battery; it is heavy.
Note:
Be sure to place the battery inside the raised bottom edge of the
case.
Note:
A faulty battery is indicated if the
BATTERY
indicator does not light
green within 5 minutes assuming the iPSU is plugged into AC power.
POWER
SILENCE ALARM
BA TERY
CAUTION
POTENTIAL SHOCK
Tension Springs
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iNID -- i3812V User Guide
60
10.
Place the housing cover over the unit and press gently on it until it snaps into place.
11.
Fasten the cover with the two screws you removed earlier.
Note:
If you have disabled the alert earlier, make sure to enable the alert
(
page 63
).
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Working with the Power Supply Unit
61
Disabling the Alert
By default, the audible alert is enabled to warn you when the battery is exhausted. It is recommended that
you do not disable the audible alert unless you intend to replace the battery within a short time. A chirping
tone sounds to alert you that when the battery is exhausted and needs replacing. The duration of the
chirping sound is 0.2 seconds and happens once every 5 seconds. You can turn off the chirping sound to
disable the alert for 12 hours or permanently.
To disable the alert:
1.
Enter
as the URL; the
Home
page opens.
Caution:
Disable the audio alert with caution!
If you disabled the alert and did not replace the backup battery on a timely
manner, you will have no voice-over-IP services in case of emergency during
an AC power outage.
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