40
undue use can have irreversible consequences both for the UPS and
for the loads connected to its output. It is therefore important to
handle it as described in the following paragraphs.
6.7.2. Transfer to maintenance bypass.
Procedure for passing from normal operation to maintenance bypass:
˙
Shutdown the inverter. Through the LCD touch panel, go to «CNTL»
submenu (Screen 1.0), and select «OFF». You will get Screen 1.2,
asking you to shut down the unit, by selecting
(YES) to shut down
the inverter.
˙
Remove the screws to that fixes the mechanical block (BL).
˙
Remove the mechanical block (BL) of the manual bypass switch
(Q5) and set it to «On» position.
˙
Set the output switch (Q2) to «Off» position.
˙
Set the Battery Fuse Holder or battery switch (Q3) to «Off».
Besides, in models with independent battery pack/s also turn
Battery Fuse Holder (Q8) of each pack to «Off».
˙
In standard units, set the input switch (Q1a) to «Off» position.
In UPS-B units, set the input switch (Q1a) and static bypass switch
(Q4) to «Off» position.
The UPS is supplying output voltage directly from the mains through
the manual bypass in units or from the mains of the static line bypass
in the version UPS-B units, through the manual bypass. The UPS is
completely shut down and inactive.
6.7.3. Transfer to normal operation.
Procedure for switching from maintenance bypass to normal
operation:
˙
In model with external battery cabinet, set fuse holder switch from
battery cabinet (Q8) to «On» position.
˙
In standard units, set the input switch (Q1a) to «On» position.
In B units, set the input switch (Q1a) and static bypass switch (Q4)
to «On» position.
˙
Set the output switch (Q2) to «On» position.
˙
Set the manual bypass switch (Q5) to «Off» position and refit the
mechanical block (BL) and the screws (t2).
It is an essential requirement for safety to refit the mechanical
block (BL), as this avoids dangerous handling for the life of the UPS
and the loads connected to it.
˙
Start up the inverter. The start-up operation will be done through
the LCD touch panel. Select «CNTL» to get into control submenu
(screen 1.0), and then select «ON/OFF». You will get to screen 1.1,
asking you to start the unit up yes or not. You can select Yes. See
screen diagram (Fig. 33).
The UPS supplies output voltage entirely protected against voltage
variations, electric noise, etc.
˙
Wait for alarm message to appear as:
˙
Battery fuse holder switch or switch from UPS (Q3) can only be
turned «On» when the previous alarm message has been cancelled.
DO NOT TRY to close any battery fuse holder switch at any other
moment, because this operation could damage the equipment
and/or cause possible accidents. They can only be turned on by
following the quoted previous steps.
˙
The UPS supplies output voltage entirely protected against cuts,
micro cuts, voltage variations, electric noise, etc.
!BATT. SWITCH OPEN SWITCH IT ON