HIGH EFFICIENCY

It is the fruit of many years of experience and special design studies and is made of the highest grade materials and with the latest technology. In addition, all our products carry the EC mark which indicates that they comply with the requirements of the European Machinery Directive in relation to safety. The data can undergo modifications deemed necessary for the improvement of the product at any time and without the obligation for any notification thereof.

There may still be risks to the safety of the user or third parties, or even damage to other units and objects, in case of improper use. Provide the following installation instructions with all supporting documentation to the user of the unit, who will be responsible for keeping the instructions so that they are always available when needed. The use of this unit is not intended for persons (including children) with any physical or mental disabilities or any sensory impairment, nor for people without experience and knowledge, unless they are supervised or instructed in the use of the unit by a responsible person. for their safety.

It is forbidden to pull, disconnect or twist the electrical cables of the unit, even if it is disconnected from the mains. It is forbidden to touch the unit with wet parts of the body and bare feet.

Warnings on the documentation

Intended use

These devices are designed and manufactured for cooling; they must be used for these purposes, in accordance with their performance characteristics.

Conserving the documentation

Essential safety rules

Product identification

Description of the unit

Configurator

Y Mechanical thermostatic valve with processed water from +4°C to -6°C X Electronic thermostatic valve also with processed water up to -6°C. 03 High-pressure water accumulator and single pump 04 High-pressure water accumulator and reserve pump P3 Without water accumulator, with high-pressure pump.

Description of components

NRL 0280-0300-0330-0350
NRL 0500-0550-0600-0650-0700
Chiller circuit
Frame and fans
Hydraulic components
Safety and control components
Electrical components

Of the plate type (AISI 316), externally insulated with closed cell material to reduce thermal dispersion. Of the mechanical type, made of ceramic and hygroscopic material that can trap impurities and any traces of humidity in the radiator circuit. It IS made of copper pipes and aluminum blades that are blocked by the mechanical expansion of the pipes. versions with pump only or with accumulator).

Depending on the characteristics of the pump selected, it provides a useful head to overcome pressure drops in the system. This is an electric servo controlled ON-OFF diverter valve on the water side of the controlled free cooling circuit. Automatic type, mounted on the upper part of the hydraulic system; it releases any air bubbles that may be present in the system.

It is placed on the low pressure side of the chiller circuit and communicates to the control card the operating pressure, which sends a pre-alarm in case of abnormal pressure. It is placed on the high pressure side of the chiller circuit and communicates to the control card the operating pressure, which sends a pre-alarm in case of abnormal pressure.

Accessories

Technical data

Operating limits

Cooling mode

Corrective factors chiller function

Cooling capacity and input power

For ∆t different from the rated value

Fouling factors

Fouling factors [k*m2]/[w]

Correction factors free-cooling function

For ∆t different from the rated value

Fouling factors

Fouling factors [k*m2]/[w]

Ethylene glycol solution

How to read the glycol curves

Pressure drops

Total pressure drops

Useful heads

Accumulator

Maximum/minimum water content in the system

Maximum water content recommended
Expansion tank calibration
Minimum water content recommended

Capacity controls

Sound data

Safety and check parameter setting

Dimensions

Minimum technical clearance NRL0280-0300-0330-0350

Position of vibration dampers

Minimum technical clearance 0500-0550-0600-0650-0700

Position of vibration dampers

Weight distribution percentage on the supports

Percentage weight distribution on the supports

Safety warnings and installation regulations

Receiving the product

Handling

Positioning

Handling example

Hydraulic circuits

Internal hydraulic circuit NRL F "00"

Internal hydraulic circuit NRL F "P3-P4"

Internal hydraulic circuit NRL F "03-04"

Filter maintenance

Filter cleaning procedure

Plumbing connection position

Electrical wirings

Lines and electric data for the unit

Electrical data

Connection to the electrical power supply

Start-up

Preliminary operations

Electrical checks
Hydraulic circuit controls

Start-up

Chiller circuit
Overheating
Under-cooling
Discharge temperature

System loading/unloading
Electrical connections

Please note that free start-up service is provided by AERMEC After Sales Service for units of this series, at the request of Aermec customers or legitimate owners (ONLY IN ITALY). The commissioning of machines must be agreed in advance based on the time of system creation. Before the intervention of the AERMEC after-sales service department, all works (electrical and hydraulic connections, charging and air bleeding of the system) must be completed.

Before carrying out the checks indicated below, make sure that the unit is disconnected from the mains, using the appropriate tools. After a short period of operation, check the oil level in the compressor and the absence of bubbles in the liquid indicator glass. A continuous transition of steam bubbles in the cooling mode may indicate an insufficient refrigerant charge or that the thermostatic valve is set incorrectly.

Check the degree of superheat by comparing the temperature indicated by the contact thermostat located on the suction side of the compressor and the temperature indicated by the low-pressure manometer (saturation temperature corresponds to the evaporation pressure). Check the degree of subcooling by comparing the temperature indicated by the contact thermostat installed on the pipe at the outlet of the condenser and the temperature indicated by the high-pressure manometer (the saturation temperature corresponds to the condensing pressure). Discharge temperature If the subcooling and superheating values are regular, the temperature measured in the discharge pipe at the exit from the compressor must be 30/40°C higher than the condensation temperature. .

During the winter, if the system remains idle, the water in the heat exchanger can freeze, causing irreparable damage to the heat exchanger itself, complete draining of the cooling circuits and, sometimes, damage to the compressors. In this case, it is necessary to take into account the different capacities and suctions of the refrigerant, the measurements of the pumps and the power of the terminals. In this case, the heaters must always be on during the entire winter period (car on standby).

Maintenance

Disposal

Disconnecting the unit

Dismantling and disposal

Improper use

Important safety information

Refrigerant gas R410A

Contact with the skin: if the skin comes into contact with the rapidly evaporating liquid, it can cause the tissues to freeze. Possibility of dangerous reactions generated during a fire, due to the presence of F and/or Cl groups. In the event of a fire or overheating, there is an increase in pressure and the container may explode.

However, it can become flammable if mixed with compressed air and exposed to strong sources of ignition. The vapors are heavier than air and can cause suffocation, reducing the oxygen available for breathing. Contains gases fluorados de efecto invernadero regulados por el Protocolo de Kyoto R410A (Potencial de calentamiento atmosférico 1980).

Contém um gás com efeito das lâmpadas fluorescentes correspondentes do Protocolo de Quioto R410A (Potentiel de réchaitement planétaire 1980). Contém gás fluorado e o efeito da disciplina do Protocolo de Quioto R410A (Potenziale di warming globale 1980). Contém gases fluorados com efeito de estufa abrangidos pelo Protocolo de Quioto R410A (Potencial de Aquecimento Global 1980).