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| Liebert® XDO | User Manual
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Appendix IV: List of Maintenance Inspection Items (Semi-annually)
Date: _____________________________
Model: _____________________________
Filter net:
___ 1. Check if the filter net is damaged or blocked
___ 2. Check if the unit has filter net maintenance reminders
___ 3. Clean the filter net
Fan part:
___ 1. Whether the fan impeller is deformed
___ 2. Check and tighten circuit connectors
___ 3. Whether there is abnormal noise in the operation of the fan
___4. Is there a single fan stall
Electronic expansion valve part:
___ 1. Check whether the wiring and coil of the electronic expan-
sion valve control board are loose
Signature_________________________________________________________
Note: Please copy this form for record archive.
Prepared by: ____________________________
Serial No.: ______________________________
Cooling cyclic system:
___ 1. Check the cleanliness of the evaporator surface
___ 2. Check the refrigerant pipeline for leaks and proper
support
___ 3. Check whether it is necessary to add refrigerant
(observe through the sight glass of the liquid storage
tank)
Electrical control part:
___ 1. Check whether the wiring of the main MCB and the
power module MCB is loose
___ 2. Check and tighten circuit connectors
___ 3. Check whether the wiring and readings of various
types of sensors are normal
Drain pump
__ 1. Check if the drain pump filter net is blocked
__ 2. Check whether the water pump cable is loose
__ 3. Check whether there are impurities, debris, etc. in
the water pan
