User Manual

RS02109/0814/CD 11 www.cdtechno.com
6.2 Ventilation
Although the Li berty 2V batteries are valve reg ulat ed, t hey can produce minima l gas em iss i ons dur i ng
normal operation. If exposed to abnormal high voltage charging, the cells may vent potentially explosive
hydro gen gas. Hydr ogen gas when a cc um u late d in a c onf in e d ar ea t hat exc e e ds f our ( 4% ) p er cen t by
volume in air is explosive. C&D recommends not allowing hydrogen gasses of greater than one (1%)
per c ent by vo lum e t o a cc um u lat e. Co nt act t h e loc a l co de enfor cem ent officer t o determine what c odes and
levels are applicab le to your battery room insta ll ation. Lead aci d batteries shoul d never be installed i n a
sealed, non-ventilated cabinet or enclosure.
VRLA batteries subjected to extreme overcharge voltages have the potential to re lea se hyd rog e n g as at a rat e
of 0. 00 02 69 c u bic f e et pe r m i nut e p er ampere of charging current at 77°F (25°C). The Liberty 2V series
testing shows t hat th ey re com bi n e at ne ar ly 99% eff ic ienc y und er norm al conditions. However, compliance
with appropriate safety measures reg arding hydrogen evolution is essential for the safety of the equipment
and personnel.
6.3 Floor Loading and Anchor ing
Floor loading and anchoring requirements are the responsibility of the user/installer and all applicable
building codes and reg ulations must be f ollowed. C&D provides connection drawings, weights, dimensions,
and floor loading information on our system drawings for reference which is supplied with every shipment.
The Liberty 2V floor-mounting base has provisions for floor anchoring. Consult the applicable building codes
and regulations for specific requirements. In all cases, floor anchoring is considered mandatory with
floor anchors to be installed in all locations provided unless otherwise specified. Floor anchor sizing
and hardware ar e the responsi bil ity of the user/installer.
6.4 Spill Containment
Alt houg h the L ibert y 2V batteries contain no free flowing electrolyte, it is the sole responsibility of the
user/installer to follow all local building and fire codes applicable to the battery installation. It is
recommended consulting the local fire marshal or building inspector to determine if spill containment
is requi re d.
6.5 Electrical Connections
WARNING:
•
Always use protective insulating equipment, such as gloves, shoes, eye and
face protection. Wrenches and other tool s must be properly insulated.
•
Observe local, state, and national electric codes at all times. Al ways work with the battery
ungrounded. Battery ground connections, if required, should be made last.
•
To avoid wor king with high voltages, break the battery down into convenient
lower-voltage modules, equal to or less than 48-volts.
•
Alw ays maintain a firm grasp on tools and hardware when working on the bat ter y.
Dropped hardware can cause a short circuit, possibly result ing in serious personal
injury and/or damage to the equipment.
•
Before working on the battery, be sure to discharge static el ectricity th at can build
up on tool s or th e technician by touchi ng a grounded surface in the vicini t y of the battery.