Vertiv™ | Liebert
®
STS2
™
100-1000A, 50/60Hz User Manual | Rev. 12 | 11/2017 2
OVERVIEW OF MANUAL
The Liebert STS2 Installation, Operation and Maintenance Manual is organized in a logical progression so that
you can follow the procedures in the order provided to get your Liebert STS2 installed and running.
Read the entire manual before proceeding with the unpacking and installation of the Liebert STS2.
The major sections are as follows:
Important Safety Instructions—review the instructions on the previous page before proceeding.
Support Information—a blank table in which you can enter pertinent data, such as the serial and part numbers,
needed when calling Vertiv for technical support.
Programmable Relay Board Settings Record—a blank table in which you can document your Programmable
Relay Board settings.
Input Contact Isolator Settings Record—a blank table in which you can document your Input Contact Isolator
settings.
1.0 - Safety Precautions—provides safety warnings that you must review before proceeding.
2.0 - Unpacking and Inspections—provides instructions for inspecting, unloading, handling and removing the
Liebert STS2 from the shipping pallet.
3.0 - Location Considerations—provides information regarding environmental considerations for where the
Liebert STS2 is installed.
4.0 - Locating the Liebert STS2—provides instructions for leveling the Liebert STS2 and anchoring the unit to
the floor, should that be required.
5.0 - Power and Control Wiring—provides instructions wiring the Liebert STS2 for power and control
connections.
6.0 - Options—lists the options available for the Liebert STS2.
7.0 - Installation Drawings—provides outline, seismic and electrical field connection drawings required for
installing the Liebert STS2.
8.0 - Introduction to Liebert STS2 Operations—provides a system description.
9.0 - Theory of Operation—provides an overview of how the unit works, plus a brief overview of some of the
components.
10.0 - OPERATING INSTRUCTIONS FOR THE TOUCHSCREEN INTERFACE—provides instructions for turning
the system On and Off, completing a maintenance bypass and selecting a preferred source.
11.0 - Alarm and Faults—provides a list of event messages.
12.0 - Communication Interfaces—discusses the communication ports and provides a list of commands.
13.0 - Liebert STS2 Touchscreen Display—provides instructions for using the HMI touchscreen interface for
monitoring and managing the Liebert STS2.
14.0 - Operating the Liebert STS2 LED Display—provides instructions for operating the LED display unit
without the touchscreen display.
15.0 - Specifications—provides specifications for the Liebert STS2.
16.0 - Event Message Help Text—provides the help text for the various system event messages. This help is
also available through the touchscreen interface.
17.0 - Maintenance—briefly discusses routine maintenance, provides proper torque settings for nuts and bolts,
and provides the Vertiv contact information for technical support.
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