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Start the Liebert XDP with Liebert iCOM
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5.0 START THE LIEBERT XDP WITH LIEBERT ICOM
5.1 Checklist for Liebert XDP Startup
1. Verify that bypass flow controllers were installed (if applicable), see Table 5.
2. Verify that the minimum load level of 48kW (163,800BTU/H) is present.
3. Check all isolation ball valves in the Liebert XDP and Liebert XD cooling module and verify that
all are open.
4. Check rotation of the Liebert XDP’s pumps.
On 460V units only—Hold the rotation device provided against the pump housing at the
inspection screw prior to energizing the pumps. Counterclockwise indicates proper rotation;
clockwise indicates incorrect rotation.
On 208V and 400V units only, view the LED indicator on the pump. Green indicates proper
rotation; Green and Red indicate incorrect rotation.
5. Check rotation of fans on Liebert XD cooling module units.
6. Verify that air is being discharged into the cold aisle.
7. Confirm that the total calculated refrigerant R-134a amount has been properly charged into the
system (see
3.6 - Filling the Pumped Circuit—R-134a).
8. Confirm that the remote temperature/humidity sensors provided have been installed in optimal
locations (see
2.4 - Remote Sensor Installation—Proper Placement)
The Liebert XDP system is now ready to be turned ON.
!
CAUTION
Risk of piping and component rupture. May cause equipment damage or injury.
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.
NOTE
The Liebert XDP160 requires a minimum load of 48kW (163,800BTU/H) before the system can
be commissioned. This load can be supplied by actual user load in racks, by independent load
banks or by the “Load Bank Testing” service of Emerson Network Power Liebert Services. To
achieve the minimum load requirements, the capacity of all connected modules must total at
least 48kW (163,800BTU/H). See
Table 1.
NOTE
Before any action that could cause a disturbance in the Liebert 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
Table 13 Liebert XDP pump light indicator—208V and 400V units
Indicator Lights
Description
Green Red
Off Off
The electricity supply has been switched Off or the pump has
been cut out by the thermal switch.
On Off The electricity supply has been switched On. Normal operation.
On On
The electricity supply has been switched On. The direction of
rotation is wrong.