Battery Handling Precautions
The Kentec range of control panels and power supplies are designed and certified in accordance with EN54-4 requirements.
In order to comply with EN54-4 the power supplies must have a main power source and a secondary power source in the event of a main supply failure. This secondary power source is provided by a pair of 12 volt Valve Regulated Lead Acid batteries (VRLA), wired in series.
These batteries can present some hazards, however these are minimised by taking sensible precautions and care when handing the batteries and working near the batteries.
Typical VRLA battery labelling gives warnings that the batteries contain lead, they should not be charged in a sealed container, care should be taken to avoid shorting the terminals and units should be recycled and must not disposed of in domestic waste.
Accidental short circuit of the battery terminals by a conductive object, such as a metal tool or item of jewellery etc. may generate sufficient heat to cause severe burns, create arcing or cause a metal object to melt and splash molten material.
It is recommended that before working with batteries, metal objects should be removed – including rings, bracelets, watches and necklaces. Alternatively, these units should be adequately covered by an insulating layer (gloves for example) to avoid an accidental short circuit.
Never place metal tools near to, or on top of the battery
Batteries are supplied with packaging insulators fitted on the terminals. These should be left in place until the charger cables are to be installed, to further reduce the risk of accidental shorting of the battery terminals.
Emission of Gases
Hydrogen and Oxygen are both evolved during the battery charging process. Hydrogen gas can be explosive at levels above 4% and therefore it is important that the batteries are not charged in a fully sealed container.
The Kentec control panels have IP30 ingress protection, which ensures adequate ventilation for these gases to disperse.
Caution needs to be observed if the control panel is installed in an enclosure which has a very high IP rating.
The batteries contain lead and can be heavy for larger capacity batteries. They can also be awkward to handle and this may result in possible strains to the body as well as the possible risk of dropping the battery.
Always use correct lifting procedures to minimise strain to the human body and use lifting handles or ledges (if provided) to reduce the risk of dropping the battery.
No attempt should ever be made to repair a damaged battery.