AT&T DC User manual

AT&T DC UPS
Operation Manual
(Leave with Customer)
DC UPS Operation Manual, Rev 1.0 Page: 1 of 8

DC UPS Operation Manual, Rev 1.0 Page: 2 of 8
TABLE OF CONTENTS
1................................................................................................................................................................................................. 3PRODUCT INTRODUCTION
1.1 GENERAL DESCRIPTION.....................................................................................................................................................................................................3
1.2 COMPONENTS......................................................................................................................................................................................................................3
2.............................................................................................................................................................................................. 4IMPORTANT SAFETY NOTES
2.1 ELECTRICAL WARNINGS ...................................................................................................................................................................................................4
2.2 .........................................................................................................................................................................................................4BATTERY WARNINGS
2.3 SAFETY WARNING LABEL..................................................................................................................................................................................................5
3.............................................................................................................................................................................................................................. 6OP RATIONE CONTROL3.1 ............................................................................................................................................................................................................................6
3.2 ..........................................................................................................................................................................................................7OPERATIONAL LEDS
3.3 ...............................................................................................................................................................................................................................7ALARMS
3.4 ...............................................................................................................................................7ALARM LEDS AND CORRESPONDING AUDIBLE ALARMS
3.5 AUDIBLE ALARM ................................................................................................................................................................................................................7
4........................................................................................................................................................................................................................ 8MAINTENANCE
4.1 MAINTENANCE MODE........................................................................................................................................................................................................8
4.2 CUSTOMER BATTERY REPLACEMENT..............................................................................................................................................................................8
TABLE OF FIGURES
Figure 1: DC UPS Power Supply and ONT System Configuration...................................................................................................................3
Figure 2: Warning Label .......................................................................................................................................................................................5
Figure 3: DC UPS Front Panel LEDs and Control..............................................................................................................................................6
Figure 4: DC UPS Front Panel LEDs ...................................................................................................................................................................7
Figure 5: Battery Replacement...........................................................................................................................................................................8
TABLE OF TABLES
Table 1: Customer Button Operation..................................................................................................................................................................6
Table 2: LED Indicators ........................................................................................................................................................................................7
Table 3: Audible Alarm .........................................................................................................................................................................................7
Table 4: Audible Alarm Actions...........................................................................................................................................................................7

1 PRODUCT INTRODUCTION
1.1 General Description
The DC UPS (ONT Uninterruptable Power Supply with Battery Back-Up Unit) is designed to be
mounted inside a customer premises. The DC UPS converts 120/230Vac to 12Vdc and provides
four to eight hours of backup battery power for lifeline POTS and Ethernet services in the ONT.
Alarm outputs are available on the DC UPS to monitor the status of the backup battery
(On/Low/Faulty/Missing). The DC UPS indicates its status to the resident with LEDs and audible
alarms and to the outdoor ONT by a signal return connection.
1.2 Components
The DC UPS consists of a dedicated 120V/230ac to 12Vdc power supply with Battery Backup
and dedicated support cables.
The DC UPS houses a dedicated battery charger to maintain a 12Vdc, 7.2Ah lead-acid sealed
battery, battery monitoring and alarm circuitry. It contains four indicator LEDs to provide
operational status at a glance, status audible alarms, and one customer-operation button to
silence the audible alarm for 24 hours.
Figure 1: DC UPS Power Supply and ONT System Configuration
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2 IMPORTANT SAFETY NOTES
ONLY qualified installation and repair personnel should service this power supply.
SAVE THESE INSTRUCTIONS - This manual contains important instructions for the
DC UPS units that should be followed during maintenance.
Batteries may produce hazardous currents and may present a burn hazard if
damaged or shorted.
The following precautions should be observed when working on the unit:
1. Remove watches, rings, or other metal objects.
2. Wear protective clothing and eye protection when working with batteries and installing
this equipment.
3. Always carry a water supply to wash eyes and/or skin if exposed to battery electrolyte.
4. Use tools with insulated handles.
5. Examine the packing container for damage. Notify the carrier immediately if damage is
present.
6. Do not disassemble the unit.
7. Do not operate near water or excessive humidity.
8. Keep liquid and foreign objects from getting inside the unit.
9. Do not operate close to gas or fire.
10. Do not operate unit near leaking liquid or if any liquid residue is present.
11. Immediately unplug Power Supply from AC if you see liquid leaking
12. ABP power source needs to use Alkaline battery (1.5V*12pcs)
2.1 Electrical Warnings
Servicing this equipment may require working with protective covers removed and utility
power connected. Use extreme caution during these procedures.
Check that the power cord(s), plug(s), and outlets are in good condition.
No user serviceable components other then the battery are present in the DC UPS.
2.2 Battery Warnings
Battery Warranty is top-charge date plus thirty-six months. Replacement battery should be
PX12072F2-HG. Replacement battery can be ordered by contacting GS Battery at 1-800-
472-2879 or www.gsbattery.com.
Danger of explosion if battery is incorrectly connected or replaced.
Worn-out or damaged batteries are considered environmentally unsafe. Always recycle used
batteries or dispose of the batteries in accordance with all federal, state and local
regulations.
Any gel or liquid emissions from the sealed lead-acid (SLA) battery contain sulfuric acid,
which is harmful to the skin and eyes. Emissions are electrically conductive and corrosive.
Batteries may produce explosive gases. Keep all open flames and sparks away from
batteries.
Batteries contain or emit chemicals known to the State of California to cause cancer and
birth defects or other reproductive harm. Battery post terminals and related accessories
contain lead and lead compounds. Wash hands after handling (California Proposition 65).
Wear protective clothing and eye protection whenever installing, maintaining, servicing, or
replacing batteries.
If any battery emission contacts the skin, immediately and thoroughly wash with water.
Follow approved chemical exposure procedures.

Neutralize any spilled battery emission with the special solution contained in an approved
spill kit or with a solution of one pound Bicarbonate of soda to one gallon of water. Report
chemical spills and seek medical attention if necessary.
Never use un-insulated tools or other conductive materials when installing, maintaining,
servicing or replacing batteries.
A battery showing signs of cracking, leaking, or swelling should be replaced immediately
with a battery of identical type and rating.
2.3 Safety Warning Label
The AC power cord is supplied with the warning label “DO NOT UNPLUG! – Power Supply for
Voice, 911 Dialing, and Battery Charging” attached to the cord.
Figure 2: Warning Label
!DO NOT UNPLUG! – Power Supply
for Voice, 911 Dialing, and Battery Charging.
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3 OPERATION
3.1 Control
Figure 3: DC UPS Front Panel LEDs and Control
One user control is present in the form of one blue button on the front cover of the DC UPS.
This alarm-silence button will quiet the audible alarm for 24 hours. After 24 hours the alarm will
reactivate if the fault condition has not been corrected.
Function Symbol Type Location Function
Alarm
Silence Push Front
Cover Press & hold 1~2 seconds to mute alarm for 24hrs.
Table 1: Customer Button Operation
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3.2 Operational LEDs
Figure 4: DC UPS Front Panel LEDs
Four status LEDs are displayed on the front panel of the DC UPS. The operation of the DC UPS
can be assessed using these LEDs.
Table 2: LED Indicators
3.3 Alarms
There are audible and visual alarm signals to alert the customer to abnormal and/or service
affecting conditions present in the DC UPS.
3.4 Alarm LEDs and Corresponding Audible Alarms
TYPE Condition Buzzer
ON Battery Battery being discharged Beeps ONCE during switchover to
battery back-up
Low Battery Reached about 90% discharge Beeps 4 times per minute
Replace Battery Battery failed self test Beep once every 15 minutes
Missing Battery No battery installed or battery
disconnected None
Table 3: Audible Alarm
3.5 Audible Alarm
TYPE Condition Buzzer
Input Power Fail Loss of input power 1 second beep at power loss
Replace Battery Battery failed self test Beep once every 15 minutes
Low Battery Reached about 90% discharge Beeps 4 times/minute
Table 4: Audible Alarm Actions
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4 MAINTENANCE
4.1 Maintenance Mode
Every 45 days the DC UPS automatically self tests the battery to determine its remaining useful
life. No user intervention is needed. If the unit detects a failed battery, the “Replace Battery”
LED indicator on the unit will light and the audible alarm will beep once every 15 minutes.
4.2 Customer Battery Replacement
Battery replacement is detailed on a label located inside the front cover of the DC UPS.
Remove the Battery:
1. Open the front cover of the DC UPS by depressing the tab located at bottom of unit.
2. Detach the Velcro and pull out the old battery.
3. Disconnect the battery terminals (“+” & “-“) of DC UPS.
4. Remove the battery.
Install the Battery:
1. Reconnect “+” & ”-“ terminals to the new identical type battery.
2. Install the new battery.
3. Attach the Velcro and make sure the wires of the battery are free and not pinched by the
battery or door.
4. Close the door of the DC UPS.
Figure 5: Battery Replacement
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