Riello UPS MASTER HE, User Manual

Page: 51 / 57

0MNMHEM30RUENUB 00 pag. 51 / 57
5. Maintenance
The uninterruptible power supply is designed and produced to last a long time even in the most severe
service conditions. It should be remembered however that this is electrical power equipment, which requires
periodic controls. Moreover, some components have a limited lifespan and as such must be periodically
checked and replaced should conditions so dictate: in particular the batteries, the fans and in some
cases the electrolytic condensers. It is therefore recommended to implement a preventive maintenance
programme, which should be entrusted to specialized personnel authorized by the manufacturers.
Our Technical Support Service will be happy to recommend the various personalized options for preventive
maintenance.
Periodic operations (to be carried out by trained operator and with doors closed)
The following operations (which must be done with the doors closed) should be carried out periodically (e.g. once a
month, or more frequently in particularly difficult environmental conditions):
- Ensure that the air intake slots (located on the front door and at the back of the cabinet) and
the output grilles located on the top of the cabinet are clean;
- Ensure that the UPS is working properly (the message “NORMAL OPERATION” will appear
on the display panel). If an alarm message is displayed, check the meaning in the manual
before contacting the technical support service;
- Perform a battery test with the display panel.
Maintenance inside the UPS (trained personnel only)
Maintenance inside the UPS may only be carried out by trained specialized technician. The UPS is designed
to power the load when it is disconnected from the power supply line.
High voltage is present inside the UPS even when the power supply and the battery have been
disconnected
After disconnecting the power supply line and the battery cabinet, the trained personnel must wait around ten
minutes for the capacitors to discharge before working on the inside of the equipment.
Ordinary maintenance for batteries (trained personnel only)
The system automatically controls the efficiency of the batteries every 24 hours, and sounds an alarm when the
efficiency is lower than that calculated according to the stored capacity value.
The lifespan of the batteries is linked to the operating temperature and to the number of charge and discharge cycles
effected.
The capacity is not constant, but increases after some charge and discharge cycles; it then remains constant for
several hundreds of cycles before decreasing permanently.
Preventive maintenance of the battery entails:
- keeping the operating temperature within the field 20 - 25°C;
- performing two or three discharge and charge cycles during the first month of use;
- carrying out this operation every six months after the first month of use.
Since the batteries are a source of energy, opening the battery disconnector does not eliminate the voltage inside the
batteries. DO NOT TRY TO ACCESS THE INSIDE OF THE BATTERY CABINET. THERE ARE ALWAYS
DANGEROUS VOLTAGES AROUND THE BATTERIES. If the batteries are thought to be faulty in any way,
please contact the technical support service.
If the batteries need to be replaced, this must be done by a
specialized technician . The replaced parts
must be sent to a specialized company for disposal by means of recycling. Batteries are classified by
law as “toxic waste”.