Vertiv | Liebert CRD10 | User Manual
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CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only
properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to
move, lift, remove packaging from or prepare the unit for installation.
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.
CAUTION: Risk of excessive refrigerant line pressure. Can cause tubing and component rupture
resulting in equipment damage and personal injury. Do not close off the refrigerant-line isolation
valve for repairs unless a pressure-relief valve is field- installed in the line between the isolation valve
and the check valve. The pressure-relief valve must be rated 5% to 10% higher than the system-design
pressure. An increase in ambient temperature can cause the pressure of the isolated refrigerant to
rise and exceed the system-design pressure rating (marked on the unit nameplate).
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!
CRD10 unit 96VA transformer default wiring is orange cable (230V to 24V). If the unit rated voltage is
208V, a properly trained and qualified electrician must change the transformer wiring from orange to
red cable (208V to 24V).
See section 4.3.3 Transformer Connection Cable for details.
NOTICE!
Risk of oil contamination with water. Can cause equipment damage.
Liebert® CRV systems require the use of PVE (FV50S) oil. PVE 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 installation or service. If water is
absorbed into the PVE 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. PVE 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.
