0MNMHEM30RUENUB 00 pag. 27 / 57
After the start-up operations have been completed, perform a manual battery test:
press button 3 and then 2 on the control panel. At the end of the test, after approx. 8 seconds, with the UPS
started correctly and with the battery connected on the signals and control panel, the two green input and
output LEDs must be on constant.
SWMB
The disconnector SWMB must not be closed during normal operation of the MASTER HE .
SWMB should only be closed during UPS maintenance operations in order to keep the load powered (see
the instructions on page 30).
When the UPS is first started up, it is in on-line mode (see page 28 ). See pages 28 to set Standby-on / Smart active
operating mode.
CONFIGURATIONS
Contact the technical support personnel for other operating modes.
3.4.1 Battery operation check
Carry out only with battery present.
After installation, a mains outage even of just a few seconds can be simulated to check operation (the battery
does not need to be charged).
With the UPS in normal operation, open switch SWIN located at the UPS input (rectifier). The buzzer should
sound immediately (with 5=ON) while OUT. (green LED) and BATT. (yellow LED) on the Signals and
Commands Panel should be constantly on.
Check that the load connected to the UPS is powered. In this state, the power supplied to the load is the same as
the energy that was previously accumulated in the batteries. Close input disconnector SWIN to return to normal
operation. The IN. and OUT. LEDs on the CONTROL PANEL will be GREEN.
The batteries will recharge automatically.
Battery backup time
Before a battery discharge test can be carried out, several hours have to pass (at least eight hours for
standard backup times or longer for batteries sized for long backup times) to allow the batteries to charge.
The backup time obtained on the first discharge may be slightly less than expected; a number of charge and
discharge cycles are needed to improve this value.
Battery capacity does not remain constant over time, but increases after some charge and discharge cycles;
it then remains constant for several hundreds of cycles before decreasing permanently.
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