Vertiv Liebert EXL S1, Operation And Maintenance Manual

Page: 22 / 131

2.2.1 Startup—Single Module System
NOTE: The following procedure assumes that the UPS installation inspection and initial startup have been performed
by Vertiv™-authorized technician. A Vertiv-authorized representative must perform the initial system startup to
ensure proper system operation.
This section lists step-by-step instructions for UPS's with maintenance bypass configurations as shown in this manual. If the
system has a different maintenance bypass operation, consult the provider of that system for operating procedures.
WARNING! Risk of electric shock. Can cause equipment damage, personal injury and death. The following
procedure provides power to the critical load distribution system. Verify that the critical load distribution is
ready to accept power. Make sure that personnel and equipment are ready for the critical load distribution
system to be energized.
ADVERTISSEMENT : Risque de décharge électrique pouvant entraîner des dommages matériels, des
blessures et même la mort. La procédure suivante fournit de l'énergie au système de distribution de la
charge critique. Vérifiez que ce système est prêt à être alimenté. Assurez-vous que le personnel et les
équipements sont préparés pour la mise sous tension du système de distribution de la charge critique.
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.
Starting the Unit Without Power Supplied to the Connected Load
If the installation includes a Maintenance Bypass, power may already be supplied to the critical load equipment through the
Maintenance Bypass. If there is no power to the critical load, apply power through the UPS bypass line per the following
procedure.
During startup, power is supplied to the load through the UPS (internal) bypass line while the UPS system is being
energized. Depending on the reason for the UPS shutdown, power may be present in the bypass line. To determine this,
check the Touchscreen Control Panel after control power is available.
NOTE: If the system was shut down because of an Emergency Off, there may be alarm messages on the touchscreen
that describe system conditions before (or at the time of) the shutdown. Some or all of the alarm conditions may have
been resolved. Contact Vertiv technical support for assistance in clearing any remaining alarm messages. If the
system is a multi-module system, verify that the UPS is in Maintenance Bypass Mode, then open the Module Output
Breakers (in the distribution switchboard) because the output bus provides an additional source of control power.
Wait at least 10 minutes for the control power circuitry to completely de-energize. After 10 minutes, turn control power
back On.
WARNING! Risk of electric shock and high short circuit current. Can cause equipment damage, injury and
death. If the UPS has been shut down for maintenance, verify that all of the UPS system doors are closed and
latched. All test equipment must be removed from the system. All electrical connections must be secure.
Vertiv™ | Liebert® EXL S1 Operation and Maintenance Guide
18