Modifications reserved Pagina 72/90
OPM_SPE_XXX_60K_60K_7GB_V010.doc Operatine Manual SitePro 60 kVA
For parallel systems perform the following procedure on each unit,
starting from unit no. 1.
WARNING!
Before doing the following operations, make sure that you have shut down all
equipment, which is normally powered by the UPS.
1. Switch OFF all the inverters by pressing the key “O” on the control panel of each unit.
NOTE !
Pressing the key "OFF" the inverter shuts down and it will stay OFF.
As soon as the no-redundancy condition is achieved, by pressing the key "OFF" the load is
transferred to the mains, the inverter remains operating, and the load will be re-transferred to the
inverter.
In this case keep the key “O” pressed until the inverter switches OFF (LED 5 and 6 turns OFF, LED 7
turns ON).
The LCD display must indicate ”LOAD ON BYPASS”.
The LEDs 1, 2, 3, 4b, 7 and 8 are ON.
The LEDs 4a, 5, 6 and 9 are OFF.
2. On the control panel, press the push-button “load off” protected by the sliding red cover only
on one unit connected to the parallel bus.
The output contactor K6 on each unit open, and the UPS output will be powered down.
3. Turn the input rectifier switch Q4 OFF (0 position) on each unit.
4. Turn the output switch Q1 OFF (0 position) on each unit.
5. Disconnect the battery on each unit by removing the external battery circuit breaker or fuses.
The electronic boards and the control panels are still supplied from AC power supply.
6. Disconnect the mains from the input distribution of each unit.
The units will shut down completely.
All the LEDs and the LCD display on the panels must be OFF.
WARNING!
It will take 5 minutes for the DC capacitors to discharge.
Open only the front door, do not open any other part of the UPS.
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