MAINTENANCE
The NB Wall charger has been developed based on a revolutionary design concept that simplifies
significantly the tasks and reduces preventive and corrective maintenance times. Nonetheless, there are
some actions and revisions required.
Status
Before detailing the maintenance procedure, it is convenient to define 2 possible states to carry out the
tasks of maintenance.
Status 1: Proper state for carrying the Power test. The equipment is with voltage and operating.
Status 2: Proper state for carrying the Dead test. The equipment is with no voltage, stopped,
uncharged, isolated and blocked.
Maintenance tasks must only be performed by qualified personnel and approved by Power
Electronics.
Otherwise, the equipment may get damaged and personnel could suffer severe injuries.
Use the necessary PPE according to the electrical risk and the Health and Safety regulations
Before opening any door, be sure to follow insulation guidelines and all safety instructions.
Failure to do so may result in electric shock.
Be sure to follow the insulation guidelines and all safety instructions before handling the
equipment internally. Otherwise, you may get an electric shock.
To carry out maintenance tasks or any activity inside the charger, the user must verify that there
is no voltage present in the equipment, as well as carry out the procedure of a safe stop. Always apply
the five golden rules to ensure that there are no dangerous tensions.
In addition to the recommendations given in this manual, local safety procedures and those specific to
the installation site must be taken into account. Also, local and national electrical regulations must be
followed to avoid personal injury and/or damage to the equipment.
Failure to comply with safety instructions and electrical codes may void the warranty.
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