Vertiv Liebert CRV CRD101-0D00A - Drainage System Maintenance; Dismantling the Unit; Troubleshooting

Maintenance & Troubleshooting
Vertiv | Liebert CRD10 | User Manual 100
7.10 Drainage System Maintenance
NOTES:
• Inspect the water tray periodically to ensure normal operation of the drainage pipe.
• Ensure no sediments, debris, foreign matter, or leakage occurs in the water tray.
7.11 Dismantling the Unit
The machine has been designed and built to ensure continuous operation. The working life of the main
components, such as the fan and the compressor, depends on the operation and maintenance that they
receive. The unit contains environmentally hazardous substances and components (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. The unit must be delivered to appropriate 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. To recover the gas use all the connections described in the user manual.
7.12 Troubleshooting
Troubleshooting is to be performed by the trained and qualified service personnel. However, the checklists
have been provided for reference purpose only.
NOTE: If jumpers are used for troubleshooting, remember to remove the jumpers after the troubleshooting,
failing which the connected jumpers may bypass certain control functions and increase the risk to the
equipment.
Table 7-3 Troubleshooting the Fan
Symptom
Possible Causes
Items to be Checked
EC fan can’t be
started
Power Supply
Disconnected
Check whether the fan MCB is closed; If the MCB is closed, check if the
power voltage of each phase is normal
Control board
faulty
Check J16 on the micro-processing control board, to ascertain whether
the control board is faulty or functions correctly
Fan power module
faulty
Check the alarm lamp on the fan power module to ascertain whether it
is faulty or functions correctly
EC fan faulty
Check power cable of the fan against power failure, phase loss, and low
voltage
Check whether the analog output is within the specific range of
0to10Vdc as per the requirement
Check whether the motor is clogged (due to large current)
Check whether the motor is too hot
NOTES:
• If the previous three problems (i.e. Motor Clogging, Hot Motor, or Hall failure) occurs, the motor can
restore normal operation after the faults are cleared.