Maintenance Bypass Mode - Vertiv Liebert EXS Installer/User Manual

1.5.7 Maintenance Bypass Mode

Used when the UPS requires maintenance or repair, Maintenance-bypass-mode operation powers the
connected equipment with utility power while electrically isolating the internal UPS components.
NOTICE
Risk of power interruption. Can damage the connected equipment.
If utility power fails or if its quality is out of range while the UPS is in Maintenance Bypass Mode,
the UPS may shut down without notice and shut-off output power to the load.
NOTE: The UPS has no user-serviceable parts. If the UPS malfunctions and requires service, visit
http://www.VertivCo.com/en-us/support/ or contact your local Vertiv representative.
Figure 1.8 Maintenance-bypass Operation
Item
1
2
3
4
5
6
7
8
9
1 Product Description
Description
Bypass input
Maintenance byass breaker
Bypass input breaker
Static switch
Rectifier input
Rectifier input breaker
Rectifier
Battery charger
Battery
15