Manual
1
1 Safety instructions
Warning!
Operations inside the UPS must be performed by a service engineer from the manufac-
turer or from an agent authorised by the manufacturer.
1.1 Safety caution
Use the optional Maintenance Bypass Switch (MBS) for service inside the UPS when in-
stalled to the system. Remember to open battery cabinet(s) breaker. Always ensure by mea-
suring with a multimeter that no dangerous voltages are present. For detailed MBS opera-
tion instructions please see 4.5.
This user manual contains important safety instructions and operating instructions. Please
read the user manual carefully before operating or working on the UPS and save it for refer-
ence in the future.
The UPS operates with external AC mains, battery cabinet(s) or bypass power. It contains
components that carry hazardous voltages and high currents, The properly installed enclo-
sure is earthed and IP20 rated against electrical shock and foreign objects. The user is not
permitted to open it. Failure to observe this could result in electric shock risk.
Only qualiî‚żed personnel is allowed to install and service the UPS.
1.2 Audience caution
The intended audiences of this manual are people who plan the installation, install, com-
mission, and use or service the UPS. The manual provides guidelines to check delivery,
installing and commissioning of the UPS. The reader is expected to know the fundamentals
of electricity, wiring, electrical components and electrical schematic symbols. This manual is
written for a global reader.