Stop/Start UPS and Operating the External Service Bypass
Action
Steps
1. | Press | on the keyboard | Display shows | |
| ||||
2. | Press | or | on the keyboard until | Bypass operation |
|
|
|
| : NO |
3. | Press | on the keyboard | Bypass operation | |
|
|
|
| : YES |
4. | Press | on the keyboard |
| |
All systems switch to bypass operation
Do not switch off any of the UPS systems until steps
5. Check light indication on the bypass panel
Bypass operation
Lamp indication on Bypass Panel
Green light (H003) above the bypass switch handle (Q003) lights up
6. | Set the external bypass switch (Q003) to position 1 | Green light (H004) |
|
| above the output switch |
|
| handle (Q004) and green |
|
| lights (H002) above the |
|
| output switch handles |
|
| (Q002) light up |
7. | Set the output switch (Q004) to position 0 | H003 switches off |
|
| H002 and H004 still on |
8. | Set all output switches (Q002) to position 0 | H002 and H004 still on |
9.Open the front door of any one system and press the green ON and the red OFF button simultaneously
The acoustic alarm sounds for 30 secs* Repeat for (all) other system(s)
10.Set all input switches (Q001) to position 0
The red alarm LED below the display lights up and the acoustic alarm sounds for 30 secs*
Display shows
**System OFF**
*Reset the acoustic alarm by pressing the 
key.
14 | User Guide APC Silcon 480kW 400/415V UPS |
