APC SILCON 990-4053 - Manual (Page 46)

46 Installation Guide APC Silcon 480kW 400V UPS
990-4053
Options/Accessories
6.1.3.1 Switching from External Bypass to Normal UPS Operation
Action
1. Turn the input switch (Q002) to position ”0“
2. Open the UPS front door and press the
green "ON” key
3. Press on the keyboard
4. Press or on the keyboard until
5. Press on the keyboard
6. Press on the keyboard
7. Check lamp indication on the bypass panel
8. Turn the output switch (Q002) to position ”1“
9. Turn the bypass switch (Q003) to position ”0“
10. Press on the keyboard
11. Press or on the keyboard until
12. Press on the keyboard
11. Press on the keyboard
11. Press on the keyboard
** System OFF **
Normal operation
load power %
Display shows
Lamp indication
on Servive Bypass Panel
The Green lamp (H002)
above the output switch
handle (Q002) lights
Now also the green lamp
(H003) above the bypass
switch handle (Q003)
lights
Only the Green lamp
(H003) above the bypass
switch handle (Q003)
lights
Display shows
Bypass operation
:NO
Bypass operation
:YES
:
Bypass operation
:YES
:
Bypass operation
:NO
Normal operation
load power xx %
No lamps on the Service
Bypass Panel light any
longer