User manual

1
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions. Read all safety, installation and operating
instructions before installing Liebert MPH power distribution units. Adhere to all warnings on the
unit and in this manual. Follow all operating and user instructions. Individuals without previous
training can install and operate this equipment.
• The Liebert MPH is designed for data processing equipment. The Liebert MPH is not intended for
use with life support or other designated critical devices. If uncertain about its application, con-
sult your local dealer or Emerson representative.
• Maximum load must not exceed that shown on the Liebert MPH rating label.
• Operate the Liebert MPH in an indoor environment only in an ambient temperature range of
32°F to +131°F (0°C to +55°C). Install it in a clean environment, free of conductive contaminants,
moisture, flammable liquids, gases and corrosive substances.
• Liebert MPH power distribution units have no user-serviceable parts. Under no circumstances
attempt to gain internal access due to the risk of electric shock or burn.
• Do not continue to use the Liebert MPH if the LED panel or monitoring interface indicators are
not in accordance with these operating instructions. Refer all faults to your local dealer, Emerson
representative or Emerson Network Power Applications Engineering.
• Never block or insert any object into the Liebert MPH.
• DO NOT CONNECT equipment that could overload the Liebert MPH.
• Refer to 6.0 - Specifications to determine the electrical ratings and specifications of your Liebert
MPH. It is imperative that the power supply and connections match the specifications of the unit
being installed.
!
WARNING
Opening or removing the cover of a Liebert MPH may expose you to lethal voltages within the
power distribution unit.
Observe all cautions and warnings in this manual. Failure to do so may result in serious
injury or death.
Liebert MPH units contain no user-serviceable parts. For service, contact Emerson Network
Power Applications Engineering or your local Emerson representative. Do not attempt to
service this product yourself.
Never work alone.
!
CAUTION
Connecting your Liebert MPH and rack equipment to a power supply with an incorrect rating
in voltage, amperes or phase may damage the connected equipment and your Liebert MPH.
If you have questions about the power supply connections, contact Emerson Network Power
Applications Engineering or your local Emerson representative.
!
CAUTION
Shut down and unplug all equipment in your rack enclosure before beginning to connect
equipment to your Liebert MPH.
When connecting the rack equipment to the Liebert MPH’s receptacles, arrange cables and
connections to avoid tangling and crisscrossing the power cables. For power management
purposes, record the receptacle where each piece of equipment is connected. Receptacles on
the Liebert MPH have a numerical designation. The Liebert MPH with more than one circuit
has the outlets named with numbers and are grouped by branch with a number referring to
the proper circuit breaker.
When connecting power to the Liebert MPH’s receptacles, follow generally accepted
procedures, such as routing the power cables separately from low-voltage communication and
control wires to prevent electromagnetic interference.