0MNA080A55-GB REV 01 page 5 / 75
GENERAL PRECAUTIONS
This manual contains detailed instructions for the use, installation and start-up of the Sentry MPS-HP.
Read the manual carefully before installation. For information on using the SENTRY MPS-HP, the
manual should be kept close at hand and consulted before carrying out any operation on the device.
This device has been designed and manufactured in accordance with the standards for the product, for normal
use and for all uses that may reasonably be expected. It may under no circumstances be used for any purposes
other than those envisaged, or in any other ways than those described in this manual. Any interventions should
be carried out in accordance with the criteria and the time-frames described in this manual.
• The first connection to be made is the connection between the earth conductor and the terminal
with the symbol shown here:
• The SENTRY MPS-HP must not operate without an earth connection.
• The device must be installed and used in compliance with the instructions set out in this text and with the
procedures suggested.
• The operating and maintenance personnel and specialized technicians should be adequately trained in the
safe use and maintenance of the device. They should always operate with due precaution and wear
personal protective equipment (PPE).
• Maintenance must not be carried it inside the SENTRY MPS-HP when it is being powered from the mains
or when the UPS is operating via the battery. For maintenance close the maintenance disconnector SWMB
and open all the other switches. The disconnecting switch or battery fuse located in the battery cabinet
should also be opened. Before carrying out any operation, always measure the voltage with a multimeter
to ensure that there are no dangerous voltages.
• There are dangerous voltages inside the equipment even when the input and battery switches are in the
open position; personnel must wait around ten minutes for the capacitors to discharge before working on
the inside of the SENTRY MPS-HP.
• The specialized technician must comply scrupulously with the following instructions for the installation
and maintenance of the SENTRY MPS-HP:
- use insulated tools.
- observe polarities.
- if the fuses need replacing, replace only with the same type.
- the replaced components must be disposed of in accordance with the legislation in force in the
country of installation.
• Do not deactivate the protection devices or ignore the warnings, precautions and alarms described in this
manual or those shown on data plates on the equipment.
• Promptly replace any danger signals if they should become illegible through usage.
• The UPS must be used only with all side and internal panels duly secured and with the front door closed.
• Under no circumstances may the structure of the equipment, the devices mounted on it, the operating
sequence, etc. be modified, tampered with or altered in any way without first consulting the manufacturers.
• All ordinary and extraordinary maintenance operations must be noted in the appropriate register with the
date, time, type of intervention, operator name and any other useful information.
• Once the maintenance operations have been concluded, a thorough check should be made in order to
ensure that no tools and/or other materials have been left inside the cabinet.
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