APC GALAXY 5000 - Manual (Page 51)

34001813EN/AE - Page 51
4. Maintenance
4.3 UPS isolation
Single UPS
To isolate the UPS from the electrical power source and supply the load directly by the normal or Bypass AC source, follow
the instructions below.
Frequency converter
UPS operating in ECO mode
If supplied by the network via the Bypass AC channel:
1 - Press a button to exit sleep mode.
2 - Shut down the UPS by pressing the OFF button (38) for 3 seconds.
The load is no longer protected by the UPS.
3 - Set bypass switch Q3BP (10) to ON.
4 - Set output switch Q5N (11) to OFF.
5 - Set the battery circuit-breaker QF1 (13) (or set the battery circuit-
breakers of the auxiliary cabinets if any) to OFF.
6 - Set the input circuit-breaker Q1 (8) to OFF.
7 - Set the input circuit-breaker Q4S (9) to OFF.
8 - Wait until the display and LEDs go off.
The load is no longer protected by the UPS, but continues to be
supplied with AC power.
UPS maintenance or servicing can now be carried out.
1 - Press a button to exit sleep mode.
2 - Shut down the UPS by pressing the OFF button (38) for 3 seconds.
The load is no longer protected by the unit.
3 - Set the battery circuit-breaker QF1 (13) (or set the battery circuit-breakers of the auxiliary cabinets if any) to OFF.
4 - Set the input circuit-breaker Q1 (8) to OFF.
5 - To ensure operator safety, open all Q4S (9) and Q5N (11) switches.
UPS maintenance or servicing can now be carried out.
1 - Check that the load is operating via the Bypass AC input.
2 - Set bypass switch Q3BP (10) to ON.
3 - Set output switch Q5N (11) to OFF.
4 - Set the battery circuit-breaker QF1 (13) (or set the battery circuit-
breakers of the auxiliary cabinets if any) to OFF.
5 - Set the input circuit-breaker Q1 (8) to OFF.
6 - Set the input circuit-breaker Q4S (9) to OFF.
The load is no longer protected by the UPS, but continues to be
supplied with AC power.
UPS maintenance or servicing can now be carried out.
I O
3s
38
Q1 Q4S Q3BP Q5N
QF1
13
8 10 11
9
Q1 Q4S Q3BP Q5N
QF1
13
8 10 11
9