Vertiv Liebert CRV4 Series User Manual

Vertiv | Liebert® CRV4 | User Manual 4
Introduction
1.4.3. Electronic Expansion Valve (EEV)
The EEV is designed for modulating control of the refrigerant mass-ow with precision. The EEV collects
temperature and pressure signals at the same time to accurately regulate the refrigerant ow.
1.4.4. Electrode Humidier
Electrode humidier adopts a simple structure form with large humidifying volume and high eiciency. It
enables easy disassembly and maintenance.
1.4.5. EC Fan
The EC fan has the characteristics of high eiciency, energy saving, space saving and hot-swappable design.
1.4.6. Electrical Heater
PTC heater is used. It features fast heating speed, even heat distribution, and supports safe & reliable working.
1.4.7. Sight Glass
The sight glass is the window of the system cycle, for observing the refrigerant state, mainly the moisture
content of the system. When the moisture content exceeds the standard value, the color will be changed in the
sight glass.
1.4.8. Filter Dryer
The lter dryer eliminates the moisture eectively in the system, and also ltrates the impurities generated
during the long-term system operation so as to ensure normal system operation.
1.4.9. Display Screen
The Liebert® CRV4 air conditioning unit is congured with 7-inch HMI color screen or LCD screen. The user
interface operation is simple. The multi-level password protection feature can eectively prevent unauthorized
operation. It also provides power failure auto-restoration and high & low voltage protection functions. The
operation status of the components are available on the respective menus. The expert-level fault diagnosis
system can automatically display the current fault information, facilitating easy maintenance. It can store up to
1000 historical event records.
1.4.10. Remote Monitoring Software
The Liebert CRV4 air-cooled air conditioner adopts the modbus communication protocol (Modbus protocol);
through the congured RS485 port. The Liebert CRV4 air conditioner can communicate with the host
computer and receives the control instructions of the host software.

Vertiv Liebert CRV4 Series Specifications

General

Brand	Vertiv
Model	Liebert CRV4 Series
Category	Air Conditioner
Language	English