IV404E Rev.000 SIEL S.p.A.
Issue date: 2017-06-05 Pag. 48 di 90 + FR
Procedure b)
The by-pass line is outside the acceptance field; the following message is seen on
the display panel:
BYPASS VOLTAGEFAIL or SWBY OFF and green LED 1 will flash
1)
open all the switches on the device (SWIN, SWOUT, SWBY and the battery cabinet
disconnectors/fuses). The control panel will remain off.
2)
before closing switch SWMB to connect the loads, ensure that both the frequency and
voltage of the supply line are sufficient to power the connected loads.
N.B.: After carrying out the operations indicated above, personnel must wait around ten minutes
for the capacitors to discharge before working on the inside of the equipment.
After all the maintenance operations, restart the UPS following the instructions in the section on START-UP
PROCEDURE (see page 38). Then open disconnector SWMB (if it was previously closed).
The SAFEPOWER EVO HFT will return to NORMAL OPERATION.
