Caution
Do not attempt to remove the vents (valves) from
the 10 YEAR VRLA battery or add water. This
presents a safety hazard and voids the warranty.
Handling Hazards
The individual batteries may weigh from 25 to
150 pounds depending on part number.
Exercise care when handling and moving
batteries. Assure the use of appropriate
handling equipment.
Preparation for VRLA Battery
Periodic Maintenance
There is little difference between the periodic
maintenance associated with a VRLA battery
and a vented (wet) cell battery with the exception
of that related to the liquid electrolyte. Naturally,
it is not required to measure electrolyte specific
gravity or add water to the VRLA cells.
For optimum reliability, it is recommended that
the battery system be monitored quarterly. If the
battery system incorporates an automatic
monitoring system to gather the electrical and
environmental data, the quarterly checks are
limited to the evaluation of the recorded data and
a visual check of the battery.
In general the types of checks to be made during
the periodic maintenance include:
1. System charging voltage
2. Ambient temperature
3. Battery pilot unit temperatures
4. Interunit connection hardware resistance
5. Individual battery float voltage
6. Momentary high rate load test
7. Battery system capacity test
A test of the individual unit resistance, impedance
or conductance, while optional, is also recommended
on a periodic basis. This data and its trend can be
a valuable aid in troubleshooting the system and
predicting the need for a system capacity test.
Prior to starting the periodic maintenance activity
assure that all required maintenance tools and
equipment and safety equipment is available
and functional. Notify anyone who will be affected
by the intended maintenance or troubleshooting
activity.
Also, all units in the battery should be numbered
so as to facilitate the recording and analysis of
data unique to each unit.
Required Maintenance Tools
and Equipment
At a minimum, the following tools and equipment
are required to maintain and troubleshoot the
10 Year VRLA battery.
1. digital voltmeter
2. socket wrenches, insulated
3. box end wrenches, insulated
4. torque wrench calibrated in inch-lbs.
5. rubber gloves
6. full face shield
7. plastic apron
8. potable eyewash
9. spill kit
10. fire extinguisher (class C)
The following equipment is optional depending on
the type of maintenance to be performed.
1. micro-ohm meter
2. battery resistance, impedance or
conductance test set
3. 100 amp momentary load test set
4. system load bank (DC if to be performed
at the battery or AC if to be performed
by loading a UPS output)
41-7546/0213/CD 5 www.cdtechno.com
