
IV432E Rev.01 SIEL S.p.A.
Installation and user manual
Date of issue: 2021-05-05
Pag.
22
of
50
+ FR
4.2 Turn on/off UPS
4.2.1
Restart procedure
CAUTION!
Make sure grounding is properly done!
ƹ
Set the Battery Breaker to the
“
ON
”
position
according to the user’s manual.
ƹ
Turn ON the power switch for standard UPS.
CAUTION!
Check to see if the load is safely connected with the output of the
UPS. If the load is not ready to receive power from the UPS, make
sure that it is safely isolated from the UPS output terminals
ƹ
Turn ON
Bypass
breaker(D
ual input version
).
ƹ
Turn ON Input breaker.
If the Rectifier input is within voltage range, the rectifier will start up in 30 seconds then
the inverter will start up after then.
ƹ
Turn ON UPS output switch
If the rectifier fails at startup, the bypass LED will light up. When the inverter starts up,
the UPS will transfer from bypass mode to inverter mode, and then the bypass LED
extinguishes and the inverter LED lights up.
No matter whether the UPS can work normally or not, all the status will be shown on the
LCD display.