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Appendix III: List of Maintenance Inspection Items (Monthly)
Date: _____________________________
Model: _____________________________
Filter net:
___ 1. Check if the filter net is damaged or blocked
___2. Clean the filter net
Fan part
___ 1. Whether the fan impeller is deformed
___ 2. Whether there is abnormal noise in the operation of the fan
___ 3. Is there a single fan stall
Electronic expansion valve
___ 1. Check whether the wiring cables and coils of the electronic
expansion valve are loose
Drain pump
___ 1. Check for impurities, debris, etc. in the water pan
___ 2. Check if the drain pump filter net is blocked
Signature_________________________________________________________
Note: Please copy this form for record archive.
Prepared by: ____________________________
Serial No.: ______________________________
Cooling system part
___ 1. Check the cleanliness of the evaporator surface
___ 2. Check whether it is necessary to add refrigerant
(observe through the sight glass of the liquid storage
tank)
