System Operation and Maintenance
49
6.2. Routine Maintenance Inspection (Semi-annual)
provides
the details of semi-annual routine maintenance and inspection items of Vertiv™ Liebert® XDC unit.
Table 6-2 Semi-annual Routine Inspection Items List
Parts
Inspection Items
Remark
Liebert
XDC unit
Compressor part
Check for any sign of leakages
Check and tighten circuit connectors
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 content of the system (observe through sight glass)
Electrical
control
Electrical control part
Check fuse and MCB
Check and tighten circuit connectors
Check control program
Check the closing condition of the contactor
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 impeller is deformed
Check and tighten circuit connectors
Water pump filter
Check if there is any foreign matter in the water pan
Check the water pump filter
Filter
Check whether the filter is damaged or blocked
Clean the filter
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
Speed controller adjustment function
Whether temperature and pressure detection are accurate
The refrigerant pipeline is properly supported
Check and tighten circuit connectors
