GENERAL SAFETY GUIDELINES

Before beginning the installation of the Liebert XDC, read all instructions, verify that all the parts are
included, and check the nameplate to be sure the Liebert XDC voltage matches available utility power.
Follow all local codes.
Figure i Model number nomenclature
!
WARNING
Risk of electric shock. Can cause injury or death.
Disconnect all local and remote electric power supplies before working within.
!
WARNING
Risk of unit falling over. Can cause death, injury and equipment damage.
The Liebert XDC is top-heavy. Use extreme caution and care when moving and installing this
unit.
!
CAUTION
Risk of piping and component rupture. Can cause injury or equipment damage. Closing
service valves may isolate liquid refrigerant, causing high pressure and rupture of piping. Do
not close valves without following recommended procedures for repair, maintenance and
replacement of components. Install pressure relief valves in field piping that may become
isolated by service valves.
!
WARNING
Risk of refrigerant system explosion or rupture from overpressurization. Can cause injury,
death or equipment damage.
Installer must install a 400 psig pressure relief valve in each of the two R-407c refrigerant
circuits of the Liebert XDC system. Do not install shutoff valves between the compressors and
the pressure relief valves.
For systems requiring EU CE compliance, the pressure relief valves must be CE-certified by a
notified body to the EU Pressure Equipment Directive.
!
CAUTION
Risk of contact with hot surfaces. Can cause burn injury. The compressors and refrigerant
discharge lines are extremely hot during unit operation. Allow sufficient time for the
compressors and refrigerant discharge lines to cool before working within the unit cabinet.
Use extreme caution and wear protective gloves and arm protection when working on or near
hot compressor and discharge lines.
NOTE
This document shall be used together with site specific documentation and documentation for
other parts of the system (heat rejection devices and cooling modules).
NOTE
Before any action that could cause a disturbance in the XD system’s cooling function is begun,
the facility manager MUST be informed. In addition, after the action is taken and the work is
finished, the facility manager MUST be informed.
A
Place holder
XD C 160 – 1
Chiller
unit
Revision
level
Liebert
X-treme heat
Density system
Model size Place holder

Example: XDC160AA– –1

A
A = 460V-3ph-60Hz
(voltage-phase-frequency)
M = 380/415-3ph-50Hz
–
Place holder