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8.2.2 Maintenance shut down of UPS system
WARNING !
Not following this procedure can cause protected loads to shut down!
Never close or open either Q1 or Q2 with the inverter running.
Initial situation:
The load is powered by the UPS.
The complete UPS system has to be turned OFF, while providing the load power by
mains through the maintenance bypass switch Q2.
With the UPS in normal operation and the inverter supplying the load, the switches Q1 and Q4 are ON,
Q2 is OFF, and the external battery circuit breaker or battery fuses inserted.
FOR THE SINGLE VERSION PERFORM THE FOLLOWING OPERATIONS
1.
Press key "O" on the control panel and keep it pressed until the inverter switch OFF.
LED 5 and 6 will be OFF and LED 7 will be ON.
If the key "0" is not maintained pressed the load will be automatically transferred back to the
inverter and the inverter Stay 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.
NOTE !
Not following this procedure can cause protected loads to shut down!
2.
Close the maintenance switch Q2.
LED 9 is now ON.
The load is now supplied by the mains also through manual bypass.
3.
Open the output switch Q1.
LED "service check" is ON.
The load is now supplied only through the manual bypass.
4.
On the control panel, press the push-button "load off" protected by the sliding red cover.
The output contactor K6 open and LED 7 is OFF.
The LCD display must indicate "load off".
Proceed now to power down the rectifier and DC link.
5.
Turn the input rectifier switch Q4 OFF (0).
6.
Disconnect the battery by remove the external battery circuit breaker or battery fuses.
The electronic boards and the control panel are still powered from AC power supply through the
plug X8 on the "P1 - Power Interface" (Warning! This board will remain powered from the mains
throughout this procedure!).
The load is now powered from the mains through maintenance switch Q2.
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.
Modifications reserved
OPM_SPE_XXX_60K_60K_7GB_V010.doc
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Operatine Manual SitePro 60 kVA
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