9.9 Dismantling the unit
CAUTION: The unit contains substances and components hazardous for the environment (electronic
components, refrigerating gases and oils). At the end of the useful life, when the unit is dismantled, the
operation must be carried out by specialized refrigerating technicians. Any component that is removed must
be taken to collection and disposal centers specialized in the collection and disposal of equipment containing
hazardous substances. The refrigerating fluid and the lubricating oil inside the circuit must be recovered
according to the laws in force in the relevant country.
NOTICE
Please be environmentally responsible and recycle this product through your recycling facility at its end of life.
Do not dispose of this product as unsorted municipal waste. Follow local municipal waste ordinances for proper
disposal provisions to reduce the environmental impact of waste electrical and electronic equipment (WEEE).
The machine has been designed and built to ensure continuous operation. The working life of some of the main components,
such as the fan and the compressor, depends on the operating condition and maintenance that they receive.
9.10 Troubleshooting
The following table lists possible issues and their cause and corrective steps.
Problem
Possible Cause
Corrective Action
Rack temperature is too high
Dirty filters
Replace filters
Filter clog sensor
Call Vertiv Technical Support
Incorrect position of remote temperature
sensors
Verify that remote temperature sensors are correctly
positioned
Remote temperature sensor issue
Call Vertiv Technical Support
Condensation pressure too high
Verify remote condenser fans are running
Refrigerating circuit charge issue
Call Vertiv Technical Support
Cold air short-cycling issues
Verify unit positioning/room configuration
Verify unit air-baffles set-up
Verify cold aisle containment seals (if applicable)
Insufficient room cooling capacity
Reduce rack heat load or add cooling units
Unit safety device intervention
Contact your local Vertiv representative
Unit fan fail to start
The fan is faulty
Call Vertiv Technical Support
Water drops carried by airflow
Room humidity is over acceptable limit
Check room condition
Condensate pan drain is clogged
Call Vertiv Technical Support
Problem to humidifier control
Call Vertiv Technical Support
9 Maintenance
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Vertiv™ Liebert® CRV CRD25 and CRD35 Row-Based Cooling System User Manual