Vertiv
™
| Liebert® XDC | User Manual
48
6 System Operation and Maintenance
Regular system maintenance is essential to ensure product reliability and effectiveness. This chapter introduces
the operation and maintenance of Vertiv™ Liebert® XDC unit, including routine maintenance inspections, system
troubleshooting tests, and maintenance of filter net, fan components, cooling systems, and drainage systems.
•
It is recommended that the load of Liebert XDC system should not be less than 30%. If the
load is lower than the requirement, consult Vertiv local representaive.
•
During the operation of Liebert XDC precision air conditioner, lethal voltage may exist in the
unit. Prior to operating, ensure to read all notes and warning information on the parts and also
those which are mentioned in the manual, otherwise it may cause casualties.
•
Only qualified and authorized repair and maintenance personnel can perform system
maintenance.
6.1. Routine Maintenance Inspection (Monthly)
Check the system components monthly, focusing on checking whether the system functions normally and whether the
components have any sign of wear. Refer to
for the monthly routine maintenance inspection items.
Table 6-1 Monthly Routine Inspection Items List
Parts
Inspection Items
Remark
Liebert
XDC unit
Compressor part
Check for any sign of leakages
Listen to the running sound and observe the running vibration
Cooling cyclic
system
Check the suction pressure
Check exhaust pressure
Check the refrigerant line
Check the moisture contents of the system (observe through sight glass)
Cooling
terminal
Electronic
expansion valve
Whether the refrigerant pressure and temperature detection are accurate
Check if it is blocked or stuck
Fan
Whether the fan is running with abnormal noise
Water pump filter
net
Check if there is any foreign matter in the drip tray
Check the water pump filter
Filter net
Check whether the filter net is damaged or blocked
Clean the filter net
Outdoor
unit
Air-cooled
condenser
(air-cooled unit)
Cleanliness of condenser fins
Whether the fan installation base is firm
Whether the fan cushion is aged or damaged
The refrigerant pipeline is properly supported
