Airwell Itelco-Clima CLS Series User Manual (English)

Questions and Answers:

T
Tammy WashingtonAug 18, 2025
How to fix excessive noise in my Airwell Itelco-Clima CLS Chiller?
- D
  danielwoodsAug 18, 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
Megan WilliamsAug 21, 2025
What to do if HP alarm activates and stops my Airwell Itelco-Clima CLS Chiller?
- M
  Mary SanchezAug 22, 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.
D
David HallAug 25, 2025
Why does the LP alarm activate and stop my Airwell Itelco-Clima CLS?
- Z
  Zachary TaylorAug 26, 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.
A
Austin FloresAug 28, 2025
How to troubleshoot an Airwell Chiller that runs but doesn't cool?
- J
  Jeffrey PeckAug 28, 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.
J
Jerry RossAug 31, 2025
What causes a low oil level in the Airwell Itelco-Clima CLS compressor?
- B
  Brian McleanAug 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.
C
Christina JonesSep 3, 2025
Why is there ice forming on the suction line of my Airwell Itelco-Clima CLS Chiller?
- P
  Patrick BrownSep 4, 2025
  Ice formation on the suction line of your Airwell Chiller can be caused by: * Wrong calibration of overheating. Increase overheating. * Check the charge.
S
Scott HarrisSep 7, 2025
What causes frosting on the liquid line of my Airwell Itelco-Clima CLS?
- P
  Patrick LynchSep 7, 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.
D
Daniel GordonSep 12, 2025
Why is the liquid line of my Airwell Itelco-Clima CLS Chiller too hot?
- J
  Jessica GallowaySep 12, 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 Series Specifications

General

Brand	Airwell
Model	Itelco-Clima CLS Series
Category	Chiller
Language	English

Summary

1 Foreword

1.1 Introduction

Overview of Itelco-Clima units, their applications, and manual purpose.

1.2 Warranty

Details on warranty conditions, coverage, and voiding factors.

1.3 Emergency stop / Normal stop

Instructions for emergency and normal shutdown procedures.

1.4 An introduction to the manual

Explains manual conventions (Danger, Warning, Note, Useful Tips).

2 Safety

2.1 Foreword

General safety compliance with directives and regulations.

2.2 Definitions

Defines OWNER and INSTALLER roles in relation to safety.

2.3 Access to the unit

Guidelines for authorized personnel access and safety clothing.

2.4 General precautions

Precautions for operators and installers when approaching the unit.

2.5 Precautions against residual risks

Safety measures for control, mechanical, and electrical risks.

2.6 Precautions during maintenance operations

Detailed safety steps before and during maintenance.

2.7 Safety plates

Identifies refrigerant, unit, electrical, and general warning labels.

2.8 Safety regulations

Detailed safety data for refrigerants and handling.

3 Transport, Lifting and Positioning

3.1 Inspection

Procedures for inspecting units upon delivery for damage.

3.2 Lifting

Instructions and precautions for lifting the unit using appropriate equipment.

3.3 Anchoring

Guidance on securing the unit to foundations, especially in seismic areas.

3.4 Storage

Precautions for storing the unit before installation to prevent damage.

4 Installation

4.1 Positioning of the unit

Guidelines for selecting the installation location and ensuring stability.

4.2 Installation of Spring Shock Absorbers

Steps for installing optional shock absorbers to minimize vibration.

4.3 External hydraulic circuit

Requirements for the external water circuit, pumps, and flow meter.

4.4 Hydraulic connection

Guidelines for connecting water inlet/outlet fittings.

4.5 Draining the defrosting waste water

Installation requirements for heat pump units to manage defrost water.

4.6 Power supply

Safety precautions for power supply connections, including grounding.

4.7 Electrical connections

Detailed instructions and warnings for electrical connections and voltage checks.

5 Start-Up

5.1 Preliminary check

Essential checks before unit startup and technician arrival.

5.2 Start-up

Step-by-step procedure for starting the unit for the first time.

5.3 Checking the operation

Procedures to verify unit performance after startup.

5.4 Delivery to the customer

Instructions for user training during unit delivery.

6 Control

6.1 General information

Overview of the unit's control system and functions.

Temperature regulation

Details on temperature regulation and set point calibration.

Antifreeze functions

Explanation of the antifreeze protection system and precautions.

6.3 Display

Explanation of the control panel display indicators and LEDs.

6.4 Start-up

Procedures for starting the unit in different models.

6.5 Switching the working temperature

How to change operating modes and set temperatures.

6.6 Main alarms

Lists common alarms, their causes, and reset procedures.

7 General Description

7.1 Introduction

Overview of CLS/CLH units and their applications.

7.2 General specifications

Physical and construction details of CLS/CLH units.

7.3 Compressors

Details on the hermetic scroll compressors used in the units.

7.4 Refrigeration circuits

Description of the unit's refrigeration circuits and safety devices.

7.5 Water heat exchanger

Information on the stainless steel plate-type evaporators.

7.6 Air heat exchanger

Details about the copper pipe coils and aluminium finned packs.

7.7 Fans

Information on the axial fans, blades, guards, and motors.

7.8 Electric power supply and control system

Details on the control compartment, keyboard, and display.

7.9 Accessories

List of optional accessories like flow meters and filters.

8 Technical Data

8.1 Pressure drops in the evaporator

Tables showing pressure drops for various models and flow rates.

8.2 Technical data

Detailed technical specifications (power supply, charge, dimensions, weights).

8.3 Unit Electrical data

Electrical data for compressors, pumps, and fans.

8.4 Position of shock absorbers and weight distribution on supports

Diagrams and tables for shock absorber placement and weight distribution.

8.5 Overall dimensions

Diagrams and tables showing overall unit dimensions for different models.

8.6 Service spaces

Diagrams illustrating required installation clearances and service spaces.

9 Maintenance

9.1 General requirements

General principles for unit maintenance and service.

9.2 Planned maintenance

Schedule and list of planned maintenance operations.

9.3 Refrigerant charge

Procedures and warnings for charging refrigerant.

9.4 Compressor

Information on compressor lubrication and replacement.

9.5 Condenser

Guidelines for cleaning and maintaining the condenser coils.

9.6 Fans

Checks for fan rotation direction after maintenance.

9.7 Dehydrating filter

How to check and service the dehydrating filter.

9.8 Sight glass

Using the sight glass to check refrigerant and humidity.

9.9 Thermostatic expansion valve

Procedure to check and adjust the thermostatic expansion valve.

9.10 Evaporator

Maintenance of the water heat exchanger for cleanliness and efficiency.

10 Troubleshooting

Anomalies, Causes, and Operations

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

11 Spare Parts

11.1 Spare part list

Recommended spare parts for initial operation.

11.2 Oil for compressors

Type of oil used for compressors.

11.3 Wiring diagrams

Location of wiring diagrams and how to request them.

12 Dismantling, Demolition and Scrapping

12.1 Generalities

Procedures for safely dismantling and disposing of the unit and its components.

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Airwell Itelco-Clima CLS Series User Manual

Table of Contents

Questions and Answers:

Airwell Itelco-Clima CLS Series Specifications

Summary

1 Foreword

1.1 Introduction

1.2 Warranty

1.3 Emergency stop / Normal stop

1.4 An introduction to the manual

2 Safety

2.1 Foreword

2.2 Definitions

2.3 Access to the unit

2.4 General precautions

2.5 Precautions against residual risks

2.6 Precautions during maintenance operations

2.7 Safety plates

2.8 Safety regulations

3 Transport, Lifting and Positioning

3.1 Inspection

3.2 Lifting

3.3 Anchoring

3.4 Storage

4 Installation

4.1 Positioning of the unit

4.2 Installation of Spring Shock Absorbers

4.3 External hydraulic circuit

4.4 Hydraulic connection

4.5 Draining the defrosting waste water

4.6 Power supply

4.7 Electrical connections

5 Start-Up

5.1 Preliminary check

5.2 Start-up

5.3 Checking the operation

5.4 Delivery to the customer

6 Control

6.1 General information

Temperature regulation

Antifreeze functions

6.3 Display

6.4 Start-up

6.5 Switching the working temperature

6.6 Main alarms

7 General Description

7.1 Introduction

7.2 General specifications

7.3 Compressors

7.4 Refrigeration circuits

7.5 Water heat exchanger

7.6 Air heat exchanger

7.7 Fans

7.8 Electric power supply and control system

7.9 Accessories

8 Technical Data

8.1 Pressure drops in the evaporator

8.2 Technical data

8.3 Unit Electrical data

8.4 Position of shock absorbers and weight distribution on supports

8.5 Overall dimensions

8.6 Service spaces

9 Maintenance

9.1 General requirements

9.2 Planned maintenance

9.3 Refrigerant charge

9.4 Compressor

9.5 Condenser

9.6 Fans

9.7 Dehydrating filter

9.8 Sight glass

9.9 Thermostatic expansion valve

9.10 Evaporator

10 Troubleshooting

Anomalies, Causes, and Operations

11 Spare Parts

11.1 Spare part list

11.2 Oil for compressors

11.3 Wiring diagrams

12 Dismantling, Demolition and Scrapping