Vertiv™ | Liebert® DM | Appendix Manual
121
Appendix V: Routine Maintenance Inspection Items
(Monthly)
Date: _____________________________ Prepared By: _____________________________
Model: _____________________________ Serial Number: _____________________________
Routine Maintenance Inspection Items Checklist (Monthly)
Component Inspection Particulars Remark
Filter
Check for clogging or damage
Check the filter clogging switch
Clean the filter
Infrared humidifier (if
applicable)
Check the drain piping of the water pan for blockage
Check the humidifier quartz tube
Check if the mineral deposited on the water pan
Indoor unit fan Impellers free of debris and distortion, and move freely
Compressor
Check for any signs of oil leaks
Listen to running sounds and observe operation vibrations
Power SPD (if applicable) Check for indicator color
Drain system
Check and clean out unit drain piping; humidifier and water pan;
condensate pump and building drain piping.
Refrigerant system
Check if refrigerant piping is reliably supported
Check system circulation and moisture content (observed through sight
glass)
Check Thermal Expansion Valve (TXV) is firmly connected
Signature_________________________________________________________
Note: Please copy this table for record keeping purposes.
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