7 Start-up
7.1 Commissioning
WARNING! Commissioning must be performed by authorized professionals from Vertiv.
WARNING! Risk of hair, clothing and jewelry entanglement with high speed rotating fan blades. Can cause
equipment damage, serious injury or death. Keep hair, jewelry and loose clothing secured and away from
rotating fan blades during unit operation.
WARNING! Risk of contact with high-speed, rotating fan impeller blades. Can cause injury or death. Open all
local and remote electrical-supply disconnect switches, verify with a voltmeter that power is off, and verify
that all fan impellers have stopped rotating before working in the unit.
Check and ensure that:
•
There is no leakage in the water inlet and outlet pipes, the water supply pipe of the humidifier, and the
drainage pipe.
•
The filters are correctly installed, and the surface is clean.
•
The air inlet and outlet are not blocked.
•
The voltage of the main power supply is within ±10% of the rating.
•
The power cables and control cables are correctly connected.
•
The power cables and low voltage control cables are laid away from each other.
Supply chilled water to the unit. Open the air discharge valve on the water outlet pipe till water flow can be observed in the
transparent soft pipe under the air discharge valve. Close the valve.
7 Start-up
47
Vertiv™ Liebert® CRV CRC30 and CRC60 Chilled Water Cooling System User Manual
