C&D Technologies RS-990 Liberty Series 1000 - Manual (Page 20)

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minimum of 72 hours before any load is placed on the system. The
battery is now considered fully charged and is ready for either initial
acceptance testing or regular service.
Use only direct current for charging. AC ripple current from charger
must not exceed 5 percent of the 8-hour (Ampere-hour) rating of the
battery.
1.4 Initial charge records
At the completion of the initial charge and after the cells have been on
float charge for approximately one week, record voltages of the indi-
vidual cells or units, the total battery voltage and ambient
temperature. Retain this information in your files for future reference.
This information establishes one baseline for future reference. Refer to
RS-1511 found in the appendix. Make a photocopy of the form and
use it whenever necessary to record readings taken on the battery.
IMPORTANT: Initial charge records are essential for review by C&D
Technologies sales/service agents in the event of a problem. Since
records can materially affect your warranty, be sure to maintain clear,
signed, and dated copies.
1.5 Warning labels
C&D Technologies, Inc., provided a warning label to assist in maintain-
ing standby batteries and to advise you of certain hazards.
This label
may be found on the battery cover visible to anyone in the immedi-
ate vicinity of the battery. Make certain that all individuals who could
be operating near the battery read the warning that is intended to
inform the individuals of basic safety practices.
SECTION 2 - BATTERY OPERATION
2.1 Float charging
Standby batteries are continuously connected to control circuits, which
must be energized at all times. Connected to a load in parallel with a
continuously operating power supply, these batteries assure
instantaneous support of the load in the event of a power failure or
brownout. In addition to operating the connected load, the power
supply keeps the standby battery fully charged. This parallel
interconnection and operation is called float service. Maximum battery
life can be expected in full float service, in which the frequency and
depth of discharges are kept at a minimum.
Deep and/or frequent discharges, such as those in a UPS application,
can shorten service life, even with proper battery maintenance.
Maximum battery life can be expected only in full float service.
FLUSH EYES
IMMEDIATELY
WITH
WATER.
GET
MEDICAL
HELP FAST
DANGER
HIGH VOLTAGE…
RISK OF SHOCK. DO NOT
TOUCH UNINSULATED
TERMINALS OR
CONNECTORS
SHIELD
EYES
EXPLOSIVE
GASES CAN CAUSE
BLINDNESS OR INJURY
NO
• SPARKS
• FLAMES
• SMOKING
SULFURIC
ACID CAN
CAUSE BLINDNESS
OR SEVERE BURNS
“DO NOT REMOVE VENT VALVES.” VENTILATE WELL WHEN IN AN ENCLOSED
SPACE AND WHEN CHARGING.
SEE INSTALLATION, MAINTENANCE AND OPERATION
INSTRUCTIONS FOR IMPORTANT SAFETY PRECAUTIONS.
REPAIR SHOULD BE PERFORMED ONLY BY
A QUALIFIED SERVICE TECHNICIAN.
FIGURE 1.1 - BCI Battery Warning Label