Operation; Touchscreen Navigation; Manual Operations-All Systems - Vertiv Liebert EXL S1 Operation And Maintenance Manual

2 OPERATION

2.1 Touchscreen Navigation

Several menu items can be accessed from the main display screen (refer to the Touchscreen Control Panel user manual, SL-
26094, available at www.Vertiv.com).
2.2 Manual Operations—All Systems
The Liebert® EXL S1 functions unattended by an operator. The system control logic automatically handles many important
functions. Other procedures must be performed manually.
Manual procedures available to the operator include startup, load transfers and shutdowns. These are performed with the
touchscreen and some manually operated circuit breakers and switches.
This section lists typical step-by-step instructions.
NOTE: The following step-by-step instructions apply to DSP firmware version V1.40 and higher. For all other firmware
versions, use the instructions detailed in the Operation and Maintenance Guide, SL-26090 that applies to your UPS.
Contact the factory to obtain the relevant document. Firmware versions for each UPS module can be identified via the
Touchscreen Control Panel.
• Startup—Including initial startup, recovering from input power failure, recovering from DC source shutdown and
recovering from shutdowns for emergencies or maintenance.
• Load Transfers—Including transfers from UPS to bypass and retransfers from bypass to the UPS system.
• Maintenance Bypass Load Transfers—Including transfers from internal bypass to maintenance bypass and transfers
from maintenance bypass to internal bypass.
• Shutdowns—Including module shutdowns for maintenance and emergency shutdowns.
Figure 2.1 on the next page to Figure 2.4 on page 17, illustrate several of the possible maintenance bypass configurations
for Liebert EXL S1 systems.
2 Operation
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