Vertiv Liebert DME22 - Monthly Routine Maintenance

Vertiv | Liebert® DM | User Manual 101
System Operation and Maintenance
7.4. Monthly Routine Maintenance
Check the components of the system monthly, focusing on whether the system function is normal and whether the parts are
showing signs of wear. Refer Table 7-2 for monthly routine maintenance inspection items.
To ensure proper operation of the equipment, routine maintenance checks must be performed on a regular
basis.
Table 7-2 Routine Maintenance 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.