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User Manual 10H52188UM60 - Rev. 2 - 09/2012
Battery
Liebert NXC
Warning: Hazardous battery voltage present behind covers
1. No user-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are authorized
to remove such covers.
2. Before working on the copper bars connected to the external battery, please ensure they are disconnected from all power supplies.
3. Observe the following safety precautions when working on the batteries:
1) The battery must be firmly and reliably connected. After the connection is completed, all connections between the terminals and the
batteries must be calibrated. The requirements for torque specified in the instructions or user manual provided by the battery
manufacturer must be satisfied. All connections between the terminals and the batteries must be inspected and tightened at least once a
year. Failure to observe this may result in fire!
2) Inspect the battery appearance before accepting and using the battery. If there is any damage to the packaging, dirty battery terminals,
terminal erosion, rust, or cracks in the enclosures, deformation or electrolyte leakage, replace it with a new product. Failure to do so may
result in battery capacity reduction, electrolyte leakage, or fire.
3) Batteries are very heavy. Please use the proper method when moving and lifting batteries to prevent any injuries or damage to the
battery terminals. Severely damaged batteries may catch fire.
4) The battery terminals must not be subject to any force, such as the pulling force or twisting force exerted by cables. This may damage
the internal connection of the battery and severe damage may result in fires.
5) The battery must be installed and stored in a clean, cool, and dry environment. Do not install the battery in a sealed battery chamber or a
sealed room. The battery room ventilation must comply with EN50272-2001 as a minimum requirement. Failure to follow this instruction
may result in battery bulging, fire, or even injuries.
6) The battery must be kept away from heat sources such as transformers or fire sources. Do not burn the battery or set the battery on fire,
as this may result in electrolyte leakage, battery bulge, fire, or explosion.
7) Do not connect any conductor directly between the positive and negative terminals of the batteries. Remove rings, watches, necklaces,
bracelets, and other metal objects before working on the batteries and ensure that the tools (for example, wrenches) are insulated. Failure
to do so may result in battery burning, explosion, human death or injury.
8) Do not dismantle, modify, or damage the battery. This may result in a battery short circuit, electrolyte leakage, or even injury.
9) Clean the battery enclosure with a damp cloth. To avoid any static or arcing, do not use dry cloths or dusters to clean the battery. Do not
use organic solvent, such as thinner, gasoline, or volatile oil, as this may crack the battery enclosure. In the worst case scenario, this may
result in a fire.
10) The battery contains diluted sulfuric acid. In normal use, the diluted sulfuric acid is absorbed by battery the baffle and pole plates.
However, if the battery is damaged, the acid may leak from the battery. Therefore, use personal protective equipment such as goggles,
rubber gloves, and an apron when working on the battery. The diluted sulfuric acid may cause blindness if it enters the eyes and burns if it
comes into contact with the skin.
11) The battery will be affected by shorting, electrolyte dry-up, or positive-pole plate erosion at the end of its life. If it is still used in this
state, thermal runaway, bulging, or electrolyte leakage may occur. Please replace the battery before it reaches this state.
12) Before connecting or disconnecting the battery connection cables, please isolate the charging power.
13) Check if the battery has been unexpectedly earthed. If this is the case, remove the earth connection. Contact with any part of the
earthed battery may result in an electric shock.
2.3
Battery Power Cable
2.3.1
Overview
Please install and connect the batteries according to the following description and graphic representation.
2.3.2
Installing the Batteries
1. Before installation, check the batteries for signs of damage, inspect and count the accessories, and carefully read this
manual and the user manual or installation instructions provided by the battery manufacturer.
2. There must be a clearance of 10 mm between the vertical sides of the batteries to allow for the flow of air around the
batteries.
3. A sufficient amount of clearance must be maintained between the battery top and the underside of the layer above it to
facilitate battery monitoring and maintenance.
4. The batteries must be installed from the bottom layer upwards to avoid creating a high center of gravity. The battery must
be installed properly and protected from vibrations or shock.
5. An isolating device shall be fitted as close as possible to the battery in accordance with the local installation requirements.
