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⚫ Designed for modulating control of the refrigerant mass flow with precision
⚫ Ensures effective control on super-heating at the end of the evaporator
⚫ Better low load capacity
⚫ Designed for easy Installation-and-Service
Figure 1-7 depicts the image for the EEV used in the CR012:
1.4.5 Electric heater
In the CR012 models, the PTC heaters are used as they have lower running temperatures, thereby ensuring
operational safety.
⚫ Less susceptible to overheating and long lasting due to less wear
⚫ Lower Maintenance and smooth operation
Figure 1-8 shows an image of the Electric Heater:
1.4.6 Sight Glass
The sight glass is a utility for observing the refrigerant state; specifically, the moisture content of the system. If the
moisture content exceeds the levels of defined standards, the color changes, thereby, indicating irregularity in the
moisture content.
1.4.7 Filter Drier
Moisture can adversely affect the operations and service life of a system in the refrigeration lifecycle. In order to
rectify that condition, filter driers are used to filter out particles, remove, and hold moisture to prevent it from
circulating through the system.
1.4.8 Micro-Controller
The Micro-Controller used in CR012 provides a simple operational user-interface and is developed using the latest
and highly advanced PID regulation technology.
⚫ Multilevel Password protection
⚫ Self-recovery upon power failure and high-voltage & low-voltage protection
⚫ Automatic phase-sequence switching upon the antiphase and rotate speed control of the outdoor fan
Figure 1-7 EEV
Figure 1-8 PTC Heater
Liebert CR012 Precision Air Conditioning User Manual
Chapter 1 Introduction
5
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Table of Contents
Troubleshooting
