Vertiv Liebert DSE500, Installer/User Manual

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CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or
injury. Only properly trained and qualified personnel should work on this equipment. Condenser
fan modules weigh in excess of 250 lb (113.4 kg) and evaporator fan modules weigh in excess of
125 lb (57 kg). Use proper lifting techniques and wear appropriate, OSHA-approved PPE to
avoid injury and dropping the fan module during removal. Equipment used in handling/lifting,
and/or installing the fan assembly must meet OSHA requirements. Use handling/lifting
equipment rated for the weight of the fan assembly. Use ladders rated for the weight of the fan
assembly and technicians if used during installation. Refer to handling/lifting, and/or
installation equipment operating manual for manufacturer's safety requirements and operating
procedures.
CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss.
Depending on the installation and operating conditions, a sound pressure level greater than
70 dB(A) may arise. Take appropriate technical safety measures. Operating personnel must
wear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safety
requirements.
NOTICE
Risk of improper power-supply connection. Can cause equipment damage and loss of warranty
coverage.
Prior to connecting any equipment to a main or alternate power source (for example: back-up
generator systems) for start-up, commissioning, testing, or normal operation, ensure that these
sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be
connected. In general, power-source voltages should be stabilized and regulated to within
±10% of the load nameplate nominal voltage. Also, ensure that no three-phase sources are
single-phased at any time.
NOTICE
Risk of oil contamination with water. Can cause equipment damage.
Liebert® DSE500 systems require the use of POE (polyolester) oil. POE oil absorbs water at a
much faster rate when exposed to air than previously used oils. Because water is the enemy of
a reliable refrigeration system, extreme care must be used when opening systems during
service. If water is absorbed into the POE oil, it will not be easily removed and will not be
removed through the normal evacuation process. If the oil is too wet, it may require an oil
change. POE oils also have a property that makes them act as a solvent in a refrigeration
system. Maintaining system cleanliness is extremely important because the oil will tend to
bring any foreign matter back to the compressor.
NOTE: The Liebert® cooling unit has a factory-installed high pressure safety switch in the high-side
refrigerant circuit.
Agency Listed
Standard 60-Hz units are CSA Certified to the harmonized U.S. and Canadian product safety standard
CSA C22.2 No 236/UL 1995 for “Heating and Cooling Equipment” and are marked with the CSA c-us logo.
1 Important Safety Instructions 7