Airwell Itelco-Clima CLS 242 LN User Manual

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English

Air cooled water chillers, air cooled condensing units and air-to-water

reverse cycle heat pumps

Installation and maintenance manual

IOM CLSCH-N.1GB

Date : November 2005

Supersedes : None

CLS/CLC/CLH

182 ÷ 602

41



140 kW

46



152 kW

Библиотека СОК 

Table of Contents

Questions and Answers:

M
Michael BrewerAug 17, 2025
How to fix excessive noise in my Airwell Chiller?
- W
  William SmithAug 17, 2025
  Excessive noise in your Airwell Chiller can stem from several sources. Check the following: * Examine the lines for vibration and inspect the clamping brackets, if any, to ensure they are secure. * A whistling sound from the thermostatic expansion valve may indicate the need to refill the system. * Inspect the dehydrating filter. * A noisy compressor could have seized bearings, requiring compressor replacement. * Ensure the compressor’s locknuts are tightened.
M
Michael MartinezAug 21, 2025
What to do if HP alarm activates and stops my Airwell Itelco-Clima CLS 242 LN?
- D
  Danielle HaynesAug 21, 2025
  If the HP alarm is activated and your Airwell Chiller stops, consider these possible causes: * Check the operation of the pressure switch and replace it if it's defective. * Ensure the delivery valve is fully open; if faulty, replace it. * The presence of substances with condensable gases in the circuit may require draining the circuit. * If the condenser fan is not working, check its cables and motor; repair or replace as needed.
T
Timothy JohnsonAug 25, 2025
Why does the LP alarm activate and stop my Airwell Itelco-Clima CLS 242 LN Chiller?
- W
  Wendy HatfieldAug 25, 2025
  The activation of the LP alarm, which causes your Airwell Chiller to stop, can be due to: * A gas leak. Identify and remove the leak. * Insufficient charge. Refill the system. * Failure of the pressure switch. Replace the pressure switch.
T
Tiffany HollandAug 27, 2025
How to troubleshoot an Airwell Chiller that runs but doesn't cool?
- W
  William YoungAug 27, 2025
  If your Airwell Chiller is running but not providing cooling, the issue might be: * Insufficient refrigerant. In this case, you should refill it. * A clogged dehydrating filter. If this is the case, replace it.
D
Dean HernandezAug 30, 2025
What causes a low oil level in the Airwell Chiller compressor?
- K
  Kristin MillerAug 31, 2025
  A low oil level in your Airwell Chiller's compressor can be caused by: * One or more gas or oil leaks in the circuit. Identify and remove any leaks. * Mechanical failure of the compressor. Request the intervention of a Service Centre. * Anomaly of the oil heater of the compressor’s base. Check the electric circuit and the resistor of the heater of the motor base, and replace defective components.
E
Emily HowardSep 3, 2025
Why is there ice forming on the suction line of my Airwell Itelco-Clima CLS 242 LN Chiller?
- A
  Angela FritzSep 3, 2025
  Ice formation on the suction line of your Airwell Chiller can be caused by: * Wrong calibration of overheating. Increase overheating. * Check the charge.
J
James MahoneySep 6, 2025
What causes frosting on the liquid line of my Airwell Itelco-Clima CLS 242 LN?
- B
  Brenda EllisSep 6, 2025
  Frosting on the liquid line of your Airwell Chiller can occur if: * The valve of the liquid line is partially closed. Check that valves are open. * The liquid filter is clogged. Replace the cartridge or the filter.
J
Joseph JohnsonSep 10, 2025
Why is the liquid line of my Airwell Itelco-Clima CLS 242 LN too hot?
- S
  shannon99Sep 10, 2025
  If the liquid line of your Airwell Chiller is too hot, it may be due to insufficient charge. Identify and remove the cause of the loss of charge and refill.

Airwell Itelco-Clima CLS 242 LN Specifications

General

Brand	Airwell
Model	Itelco-Clima CLS 242 LN
Category	Chiller
Language	English

Summary

Foreword

Warranty Conditions

Details the conditions under which the unit's warranty is valid and factors that void it.

Emergency Stop and Normal Stop Procedures

Explains the procedures for safely stopping and restarting the unit.

Safety

Unit Access and General Precautions

Specifies access requirements and safety precautions for unit interaction.

Precautions Against Residual Risks

Details safety measures for electrical, mechanical, and control system risks.

Maintenance Safety Precautions

Outlines critical safety steps to follow before and during maintenance activities.

Refrigerant and Oil Safety Regulations

Provides safety data and handling precautions for refrigerants and oils.

Refrigerant Safety Measures

Covers general, respiratory, storage, PPE, release, disposal, and fire safety for refrigerants.

Refrigerant Oil Safety Data

Details safety data and handling procedures for polyester oil.

Transport, Lifting and Positioning

Safe Unit Lifting Procedures

Provides critical guidelines and procedures for safely lifting the unit.

Installation

Unit Positioning Guidelines

Guidelines for selecting an appropriate installation location and orientation.

Spring Shock Absorber Installation

External Hydraulic Circuit Requirements

Power Supply Safety Precautions

Highlights essential safety precautions for the unit's power supply connection.

Electrical Connections Procedure

Comprehensive guide to electrical connection procedures and safety requirements.

Terminal Box Wiring Diagrams

Start-Up Procedures

Preliminary Start-Up Checks

Lists essential checks to perform before unit start-up.

Initial Unit Start-Up Sequence

Provides a step-by-step sequence for initial unit start-up.

Control System

Regulation and Antifreeze Functions

Start-Up and Operating Mode Switching

Procedures for starting units and changing operating modes/setpoints.

Main Unit Alarms

Lists common unit alarms, their causes, and reset procedures.

Technical Data

Evaporator Pressure Drop Data

CLS STD Technical Data

CLS STD Technical Data (Continued)

CLS LN Technical Data

CLS LN Technical Data (Continued)

CLS ELN Technical Data

CLS ELN Technical Data (Continued)

CLS HPF Technical Data

CLS HPF Technical Data (Continued)

CLH STD Technical Data (Models 182-352)

CLH STD Technical Data (Models 402-602)

CLC Series Technical Data

CLH LN Technical Data

CLH LN Technical Data (Continued)

CLH ELN Technical Data

CLH ELN Technical Data (Continued)

CLH HPF Technical Data

CLH HPF Technical Data (Continued)

Unit Electrical Data (CLS/CLC)

Details electrical data for CLS/CLC STD, LN-ELN, HT-HPF models.

Unit Electrical Data (CLH)

Details electrical data for CLH STD, LN-ELN, HPF models.

Unit Electrical Data (Fans)

CLH Additional Resistances Data

Shock Absorber Loads (CLS)

Shock Absorber Loads (CLS 2 Pumps)

Shock Absorber Loads (CLS 2 Pumps + 1 Tank)

Shock Absorber Loads (CLC)

Shock Absorber Loads (CLH Basic/1 Pump)

Shock Absorber Loads (CLH 2 Pumps + 1 Tank)

Shock Absorber Loads (CLH 2 Pumps + 1 Tank Cont.)

Overall Dimensions (CLS 182-302)

Overall Dimensions (CLS 352-602)

Overall Dimensions (CLC 182-602)

Overall Dimensions (CLH 182-242)

Overall Dimensions (CLH 302-602)

Service Spaces

Details required clearance for unit installation and maintenance access.

Maintenance

General Maintenance Requirements

Planned Maintenance Schedule

Presents a schedule of regular inspections and maintenance tasks.

Refrigerant Charge Management

Describes procedures and precautions for managing refrigerant charge.

Compressor and Condenser Maintenance

Fan Maintenance and Filter/Sight Glass Checks

Expansion Valve and Evaporator Maintenance

Troubleshooting

Unit Anomalies and Causes

Lists common unit anomalies, their causes, and corrective actions.

Troubleshooting Operational Issues

Continues the troubleshooting guide for various unit operational issues.

Dismantling, Demolition and Scrapping

General Dismantling and Disposal Procedures

Outlines safety procedures for dismantling, handling, and disposing of the unit.

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