Vertiv CoolPhase CDU - Preventive Maintenance Checklist

13 Preventive Maintenance Checklist
Inspection Date Job Name
Indoor Unit Model # Indoor Unit Serial Number #
Condenser Model # Condenser Serial #
Room Temperature/Humidity ° % Ambient Temperature °
Not all units will have all components. To determine your unit’s configuration, compare the Indoor Unit Model # above and the
information in Nomenclature and Components on page9 .
Good maintenance practices are essential to minimizing operation cost and maximizing product life. Read and follow all
applicable maintenance checks listed below. At a minimum, these checks should be performed semi-annually. However,
maintenance intervals may need to be more frequent based on site specific conditions. Review the unit user manual for
further information on unit operation. We recommend the use of trained and authorized service personnel, extended service
contracts, and factory certified replacement parts. Contact your local sales representative for more details.
Check all that apply:
Electrical Panel
1. Check the fuses.
2. Check the contactors for pitting.
3. Check/re-torque the wire connections.
Controls
1. Check all sensors for proper readings.
2. Check/verify the control operation (sequence).
3. Check/test the change over device(s) (if equipped).
4. Check/test the water detection devices(s) (if equipped).
5. Check/re-torque the wire connections.
Refrigerant Piping
1. Check the refrigerant lines (clamps secure, no rubbing, no leaks).
2. Check for moisture.
3. Check for restriction temperature drop across filter drier.
Compressor Section
1. Check the oil level.
2. Check for oil leaks.
3. Check the compressor mounts (springs/bushings).
4. Verify that the cap tubes are not rubbing.
5. Check/re-torque the wire connections (inside the compressor box).
6. Check the compressor operation (vibration/noise).
7. Check the crank case heater fuses (operation).
8. Check for refrigerant leaks.
13 Preventive Maintenance Checklist Proprietary and Confidential ©2024 Vertiv Group Corp. 101
Vertiv™ CoolPhase CDU Installer/User Guide