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6739380EN/JC - Page 31
Maintenance
Maintenance configuration
Fig. 29
Caution:
◗ work should be carried out in
accordance with applicable safety
regulations;
◗ to avoid interrupting the load, the
various switching operations must
be carried out in the correct order.
Operations are explained in
diagrams placed next to the
switches.
Single-unit or single modular
UPS (figure 29)
During maintenance, the UPS must be
isolated from Mains 1 and 2, the battery
and the load.
◗ inverter isolation
Proceed in the following order:
◗◗ shut down the inverter (press the
"inverter off" button 7 for 3 seconds),
◗◗ close bypass switch Q3BP,
◗◗ open isolating switches Q5N, Q4S,
QF1 and Q1.
The UPS is powered down once the
capacitors have discharged (a few
minutes);
◗ start-up
Following servicing, proceed in the
following order:
◗◗ close switch Q1, then after
approximately ten seconds, switches
QF1, Q5N and Q4S,
◗◗ open bypass switch Q3BP,
◗◗ start the inverter (press the "inverter
on" button 6 ).
Multi-bypass modular UPS
(figure 30)
Prior to servicing a given UPS, it must
be isolated from Mains 1, Mains 2, its
battery and the load outputs of the
other UPSs (in this case, never operate
the Q3BP switches in the units).
◗ isolate the UPS
Proceed in the following order:
◗◗ shut down the inverter (press the
"inverter off" button 7 for three
seconds);
◗◗ open isolating switches Q5N, QF1,
Q4S and Q1 in the unit.
The UPS is de-energised once the
capacitors have discharged (a few
minutes).
◗ start-up
Once servicing is completed, proceed
in the following order:
◗◗ close Q1, then QF1, Q4S and Q5N;
◗◗ start the inverter (press the “inverter
on” button 6 ).
Note. It is strongly advised to call on
our after-sales support department for
these operations.
Fig. 30
Q1
Q5N
QF1
Q3BP
Q4S
load
battery
inverter
mains 1
rectifier-
charger
static switch
mains 2
Q1
Q5N
QF1
Q3BP
Q4S
Q1
Q5N
QF1
Q3BP
Q4S
Modular UPS 2
Modular UPS 1
load
battery
inverter
mains 1
rectifier-
charger
static switch
battery
inverter
mains 1
rectifier-
charger
static switch
mains 2
mains 2