LEGRAND Trimod HE 10, Installation And Maintenance Manual

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Trimod HE®
Installa
tion and main
tenanc
e manual
41
7. Maintenance
DANGER
INSTALLATION and ORDINARY MAINTENANCE operations must be carried out only by SKILLED TECHNICIANS
(paragraph 2.2.1). EXTRAORDINARY MAINTENANCE operations must be carried out only by LEGRAND TECHNICAL
SUPPORT SERVICE
7.1 Introduction
This chapter contains all the information necessary for a skilled technician to correctly install and maintain the Trimod HE
UPS.
DANGER
The operator is not authorized to carry out the activities listed in the installation and maintenance manual.
LEGRAND declines all liability for any injury or damage caused by activities carried out differently from the instructions
written in this manual or by a skilled technician who doesn’t follow the requirements written in the installation and
maintenance manual.
7.2 Preventive maintenance
The UPS does not contain parts for preventative maintenance by the operator.
The operator must periodically perform:
- a general external cleaning;
- a check to verify the absence of alarms on the display;
- a check to verify the correct functioning of the fans on each power module.
During a preventive maintenance inspection the skilled technician must carry out the following checks:
- no alarm presence;
- list of the memorised events;
- correct functioning of the static and maintenance bypass;
- integrity of the electrical installation;
- flow of cold air;
- battery status;
- characteristics of the applied load;
- conditions of the installation location.
After the first year of UPS life, check the batteries every six months through the “battery calibration” function to guarantee
the optimal operation and continuous protection of the connected load. With this function, the UPS detects the discharge
curve of the batteries in order to provide precise information on the charging state.
Enter the main menu to perform this operation and follow the path Tools

Batteries

Batt. Calibration
Press the ENTER key to confirm the choice.
Contact the LEGRAND Technical Support Service in case of problems.
7.3 Periodical checks
The correct functioning of the UPS unit must be guaranteed by periodical maintenance inspections. These are essential
to safeguard the reliability of the UPS.
WARNING
The periodical checks involve operations inside the equipment in presence of dangerous voltages. Only maintenance
personnel trained by LEGRAND are authorized to work.