General Safety Warning; Description - MarelliGenerators MJB 250 Instructions

GENERAL SAFETY WARNING

The generators which are the subject of these "instructions" are components designed for use in industrial areas (machines/plants) and
therefore cannot be treated as retail goods.
This documentation consequently contains information that is only suitable for use by qualified personnel.
It must be used in compliance with the regulations, laws and technical Standards in force and cannot under any circumstances take the
place of plant standards or additional prescriptions, including any which are not legally enforceable, which have been issued for the
purpose of ensuring safety.
Machines built to customer specifications or with constructional differences may differ in detail from the generators described herein. If
you encounter any difficulties please do not hesitate to contact Marelli Motori, specifying:
- the type of machine
- the full code number of the generator
- the serial number.
Some operations described in this manual are preceded with symbols thatare added to alert for the possible risk of accidents.
It is important to understand the following symbols.
ATTENTION! This is referred to controls and operations that can cause damages to the product, accessories or to connected
components.
This is referred to the procedures and operations that can cause serious injury or death.
This is referred to the electrical dangers that can cause death.
DANGER
Electric rotating machines have dangerous parts: when operating they have live and rotating components. Therefore:
- improper use
- the removal of protective covers and the disconnection of protection devices
- inadequate inspection and maintenance
can result in severe personal injury or property damage.
The person responsible for safety must therefore ensure that the machine is transported, installed, operated, maintained and repaired
by qualified personnel only, that must have:
- specific training and experience
- knowledge of applicable standards and laws
- knowledge of the general safety regulations, national and local codes and plant requirements
- the skill to recognise and avoid possible danger.
All maintenance and inspection operations must be carried out only with the authorisation of the person responsible for
safety, with the machine at a standstill, disconnected from the supply (including the auxiliary circuits such as the anti-
condensation heaters).
As the electric machine is a product to be installed in industrial areas, additional protective measures must be taken and assured
by the person responsible for the installation, if stricter protection conditions are required.
As the electric generator is a component to be coupled to another machine, it is the responsibility of the installing engineer to ensure,
during operation, proper protection against the risk of contact with bare rotating parts and to prevent people or things from approaching
the machine.
If the machine shows deviations from the normal performance (excessive or too low voltage, increase in temperature, noise and
vibrations) promptly advise the personnel responsible for maintenance.
WARNING: Here enclosed with this "instructions manual" there are self adhesive leaflets which are reporting symbols
for security: the self adhesive leaflets are to be applied to the generator surface, at the customer's charge, according the
instructions presented on the sheet of the self-adhesive.

1. DESCRIPTION

These instructions refer to three-phase synchronous generators series MJB. Technical data and constructive details are given in the
catalogue.
In order to obtain the proper working of the generator it is necessary to read carefully all included instructions.
The generators MJB are synchronous generators, brushless type, self excited and self regulated, manufactured according to the
standards indicated on the name plate (IEC 34-1).
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