What to do if Vertiv Liebert CR012 compressor is over temperature?
If the Vertiv Air Conditioner compressor is overheating, check the settings of the HP and LP switches, and inspect the condenser for clogs. Also, check that the fans of the evaporator and condenser are functioning normally. If the suction overheat degree is too high, regulate the EEV or add the proper amount of refrigerant.
What to do if Vertiv Liebert CR012 contactor does not get closed and the compressor does not start?
General| Brand | Vertiv |
|---|---|
| Model | Liebert CR012 |
| Category | Air Conditioner |
| Language | English |
Defines the model nomenclature of the CR012 AC unit.
Lists the fundamental performance parameters of the Liebert CR012 AC.
Describes the Liebert CR012 cooling unit's comprehensive functions and design.
Details the primary components of the Liebert CR012 Precision Air conditioners, including compressor, fan, and evaporator.
Discusses compatibility with multiple temperature/humidity sensors and Modbus protocol.
Covers environmental conditions for operating and storing the Liebert CR012 air conditioners.
Covers preliminary steps before installing the CR012 air conditioner, including transport, unpacking, and inspection.
Details requirements for the equipment room and installation space for optimal CR012 performance.
Explains the detailed steps for mechanical installation, including system arrangement, piping, and procedures.
Covers electrical installation, including on-site wire connections, installation notes, and cable connections.
Outlines the commissioning process, including self-check, preparation, and startup inspection.
Introduces the micro-processing controller for managing the Liebert CR012 AC unit.
Describes the five control buttons on the micro-controller and their functions.
Provides step-by-step examples for accessing menus and changing parameters.
Explains the main screen display after startup, showing operating parameters and unit status.
Details the password interface and the different levels of access for menus.
Outlines the main menu structure and sub-menu options for controller functions.
Describes how to view historical alarm records, including type, start, and end times.
Guides users on accessing the Alarm Settings menu to configure alarm parameters.
Details how to view and navigate the Alarm Setpoint menu for various parameters.
Explains how to access and navigate the System Alarm menu for configuring alarm states.
Guides on setting temperature and humidity parameters, including compressor and fan modes.
Explains how to view system state, including run state, analog signals, and switch signals.
Displays important operating parameters like ambient temperature, compressor, fan, and EEV states.
Shows device environment data, pressure, temperature, and voltage relevant to the compressor.
Allows viewing input and output states of devices and their on/off records.
Indicates the running time of various components like fan, compressor, heater, and humidifier.
Provides start and stop records for important components, unaffected by power failure.
Allows accessing and modifying system settings, which are retained after power loss.
Displays and allows modification of basic system settings, including a factory reset function.
Configures fan settings, including analog limits, speed, and step parameters.
Allows setting compressor parameters like capacity, run times, and pressure limits.
Configures Electronic Expansion Valve (EEV) settings such as superheat setpoint and start/stop delays.
Enables manual control of certain components, allowing direct adjustment of their operation.
Provides access to date, time, password, and version information.
Covers teamwork functions, main/standby operations, rotation, wiring, and parameter settings for multiple units.
Provides a monthly checklist for inspecting components like filters, fans, compressor, and refrigeration system.
Offers a bi-annual checklist for components, including air filters, fans, compressor, and electrical control parts.
Highlights the built-in diagnostic function of the micro-controller for component checks.
Details maintenance procedures for electrical parts and control systems, including visual checks and insulation tests.
Explains the function and recommended placement of water leak detectors.
Provides instructions for maintaining air filters, including setting logic and replacement intervals.
Guides on inspecting EC fans, motor status, impeller, and air duct for proper operation.
Outlines maintenance instructions for electrical heaters, including periodic monitoring and inspection.
Details instructions for maintaining the refrigerating system, including monthly system checks and pipe inspections.
Covers periodic inspection of the water tray and drainage pipe for normal operation.
Provides troubleshooting steps for common issues related to fans, heating systems, and compressors.
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