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Introduction to the CIATCOOLER LJA-LJAHS series of centrifugal air condenser-based water chillers.
Procedure for checking unit upon delivery for damage or discrepancies and reporting any issues.
Locating the unit's identification plate and manufacturing number for correspondence.
Details on warranty duration and coverage based on commissioning date and method.
Essential safety precautions for installation, commissioning, and adjustment operations.
Guidelines for selecting the installation location, considering indoor placement and environmental factors.
Procedures for safely handling and installing the unit, including lifting points and panel checks.
Information on installing optional anti-vibration mounts for low-vibration applications.
Guidelines for performing hydraulic connections, including pipe sizing and isolation valves.
Table specifying water connection diameters for different evaporator models.
Description of the standard hydraulic system components included in LJAH derived units.
Block diagram illustrating the hydraulic circuit of the unit.
Instructions for using glycol solutions to protect the unit from freezing in external applications.
Checks required before connecting air ducts and guidelines for duct connection points.
Procedure for adjusting the hot gas valve to prevent exchanger freezing, based on refrigerant type.
Guidelines for making electrical connections, complying with standards and ensuring correct voltage.
Overview of the MRS microprocessor control and display module used for regulation and signalling.
Description of the electronic module's control functions for chilled water temperature regulation.
Details on the safety devices managed by the MRS electronic board and their reset procedures.
Functionality and settings for the low-pressure switch, including trigger and reset points.
Functionality and settings for the high-pressure switch, including trigger and manual reset.
Description of the evaporator anti-freeze sensor for detecting low fluid temperatures.
Safety function of the evaporator water circulation monitor to ensure proper water flow.
Description of the built-in electronic protection for electric motors against overheating.
Safety function of the outlet sensor monitoring compressor discharge temperature.
Diagrams showing the location of thermistors and safety devices within the unit's circuits.
Step-by-step guide for commissioning the unit, including pre-checks and start-up sequence.
Essential checks to perform immediately after unit start-up, focusing on fan direction and pressures.
Diagrams illustrating the layout of refrigeration circuits and main components for different unit models.
Table detailing technical specifications for CIATCOOLER LJA-LJA H units with 1 and 2 compressors.
Table detailing technical specifications for CIATCOOLER LJA-LJA H units with 3 and 4 compressors.
Details on the optional anti-freeze protection for units installed outdoors.
Table providing nominal current values for compressors, fan motors, and pumps for 1-2 compressor units.
Overview of controls and safety devices, their functions, electrical symbols, and settings.
Information regarding the optional all-year round operation feature and its setup.
Template for recording operating values such as pressures, temperatures, and electrical parameters.
Guidelines for performing regular maintenance on the unit, including safety precautions.
Instructions for connecting remote control and alarm signals to the unit's terminal block.
Wiring instructions for the full output operation signal to the CPU board.
Wiring diagram for the automatic control function, connecting contacts to the CPU board.
Instructions for connecting a contact to select between two set points for unit operation.
Procedure for connecting a contact to switch between heating and cooling modes, with important safety notes.
Instructions for connecting the water pump power supply to the main board connector.
Instructions for connecting contacts to control the unloading function of compressors.
General precautions for making connections, emphasizing polarity-free contacts and cable shielding.
General