TYPES OF WIRING

SB

MAIN SWITCH FOR SINGLE PHASE FANS

Overview:
• Mounted and wired switch
• IP65 degree of protection (EN 60529).
• Yellow and red colours.
• Can be locked in stop position.
• Compliant with European Low Voltage Directive 2014/35/EU.

C

WIRING AND JUNCTION BOX

Overview:
• Mounted and wired panel.
• Junction box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• UV resistant electrical cables suitable for outdoor use.

Specifications:
• Motor power terminal blocks.
• Connection of the fan heat-probes to the terminal block (in single-phase models the motor cutout may be directly installed in the power source and is therefore not available for external signals).
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2014/35/EU.

T

WIRING IN ELECTRICAL PANEL WITH MOTOR CUTOUT (1 PER FAN)

Overview:
• Mounted and wired panel
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• Lockable yellow/red main switch.
• UV resistant electrical cables suitable for outdoor use.

Specifications:
• 3-phase input, nominal voltage 400V (±10%), frequency 50Hz.
• Power line and fans protected from overcurrent by automatic magneto-thermal circuit breaker protecting each single fan.
The dimensioning of the panel and protection is optimized for the nominal current drawn by the fans, on the basis of the type of connection (Triangle or Star).
• Power line protected from overcurrent by fuses.
• Overtemperature thermal contact and automatic magneto-thermal circuit breaker signals for each fan connected to terminal block.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive U2014/35/EU.

Qm

ELECTRICAL PANEL WIRING FOR SINGLE-PHASE MOTORS

Overview:

• Mounted and wired panel
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• UV resistant electrical cables suitable for outdoor use.

Specifications:
• Single-phase input, nominal voltage 230V, frequency 50Hz.
• Green power ON indicator.
• Power line protected from overcurrent by automatic magneto-thermal circuit breaker.
• Power line protected from overcurrent by fuses.
• Speed regulator terminal block
• Volt-free contact for remote ON/OFF command
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2014/35/EU.

Q

ELECTRICAL PANEL WIRING

Overview:
• Mounted and wired panel
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• Lockable hatch.
• Lockable yellow/red main switch.
• Green power ON indicator.
• Red fault warning light (fan AC motors fault, EC motors regulator fault)
• UV resistant electrical cables suitable for outdoor use.

Specifications:
• 3-phase input, nominal voltage 400V (±10%), frequency 50Hz.
• 24V auxiliary circuit input, frequency 50Hz.
• Power line protected from overcurrent (fuses for AC fans, automatic magneto-thermal circuit breaker for EC fans.
N.B.: the dimensioning of the AC fans panel and protection is optimized for the nominal current drawn by the fans, on the basis of the type of connection (Triangle or Star).
• Fans protected from overloads (heat-probes for AC fans, built-in fail-safe for EC fans.
(In the case of a fault on an AC fan, all the fans will stop; in the case of a fault on an EC fan, only the faulty fan will stop).
• Speed regulator terminal block.
• Power line protected from overcurrent by fuses.
• "By-pass" function (only for EC fans): in the case of a regulator fault, to prevent plant shutdowns, the fans automatically start running at max. speed.
• Volt-free contact for remote ON/OFF command.
• Volt-free contact for additional thermostat (if fitted).
• Volt-free contact for fan fault signal.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2014/35/EU. 

E2

ELECTRICAL PANEL WIRING WITH BUILT-IN SERVICE SWITCHES (1 FOR EVERY 2 FANS)

Overview:
• Mounted and wired panel
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• Lockable hatch.
• Lockable yellow/red main switch.
• Fan enabling buttons with green luminous ON indicator (1 for each pair of fans).
• Fans rearming button with green luminous power indicator. The rearming button starts the fans enabled.
• Operating/maintenance lockable selector: enables/disables the fans enabling buttons.
• Red fault warning light (fan AC motors fault, EC motors regulator fault).
• UV resistant electrical cables suitable for outdoor use.

Specifications:
• 3-phase input, nominal voltage 400V (±10%), frequency 50Hz.
• 24V auxiliary circuit input, frequency 50Hz.
• Power line protected from overcurrent (fuses for AC fans, automatic magneto-thermal circuit breaker for EC fans).
N.B.: the dimensioning of the AC fans panel and protection is optimized for the nominal current drawn by the fans, on the basis of the type of connection (Triangle or Star).
• Fans protected from overloads (heat-probes for AC fans, built-in fail-safe for EC fans.
(In the case of a fault, only the two fans where the fault is will stop).
• Speed regulator terminal block.
• Power line protected from overcurrent by fuses.
• "By-pass" function: in the case of a regulator fault, to prevent plant shutdowns, the fans automatically start running at max. speed.
• Volt-free contact for remote ON/OFF command.
• Volt-free contact for ON signal.
• Volt-free contact for fan fault signal.
• Volt-free contact for speed regulator fault signal.
• Volt-free contact to switch out "by-pass" function.
• Compliant with Standards EN 60204-1 and EN 61439-1.

E

ELECTRICAL PANEL WIRING WITH BUILT-IN SERVICE SWITCHES (1 PER FAN)

Overview:
• Mounted and wired panel
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• Lockable hatch.
• Lockable yellow/red main switch.
• Fan enabling buttons with green luminous ON indicator (1 for each fan).
• Fans rearming button with green luminous power indicator. The rearming button starts the fans enabled.
• Operating/maintenance lockable selector: enables/disables the fans enabling buttons.
• Red fault warning light (fan AC motors fault, EC motors regulator fault).
• UV resistant electrical cables suitable for outdoor use.

Specifications:
• 3-phase input, nominal voltage 400V (±10%), frequency 50Hz.
• 24V auxiliary circuit input, frequency 50Hz.
• Power line protected from overcurrent (fuses for AC fans, automatic magneto-thermal circuit breaker for EC fans).
N.B.: the dimensioning of the AC fans panel and protection is optimized for the nominal current drawn by the fans, on the basis of the type of connection (Triangle or Star).
• Fans protected from overloads (heat-probes for AC fans, built-in fail-safe for EC fans.
(In the case of a fault, only the faulty fan will stop).
• Speed regulator terminal block.
• Power line protected from overcurrent by fuses.
• "By-pass" function: in the case of a regulator fault, to prevent plant shutdowns, the fans automatically start running at max. speed.
• Volt-free contact for remote ON/OFF command.
• Volt-free contact for ON signal.
• Volt-free contact for fan fault signal.
• Volt-free contact for speed regulator fault signal.
• Volt-free contact to switch out "by-pass" function.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2014/35/EU.

D

DIGITAL INTELLIBOARD

Description:
Designed to continuously and homogeneously regulate the speed of EC motors using MODBUS RS485 serial communication protocol, as well as control and run diagnostics on on-board systems (adiabatic systems, pressure, temperature and humidity sensors, UV lamps).
With the technology used on Electronic Commutation (EC) fans, operation is versatile and optimal with the consequent energy savings and noise reduction.
Any faults/anomalies are univocally identified in a detailed way.
The control panel is supplied installed, wired, programmed and ready-to-use.

Overview:
-Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature -25 °C / +60 °C.
• CAREL 4.3” colour touchscreen with screen protector.
• CAREL (PLC) programmable logic controller.
• Lockable hatch.
• Lockable yellow/red main switch.
• Operating/maintenance lockable selector: isolates the fan power lines.
• ON/OFF button with green status indicator.
• Red fault indicator.
• UV resistant electrical cables suitable for outdoor use with multipole quick-fit (FLEXI) connectors on panel.
• Temperature or pressure sensors installed and wired.

Technical data:
• 3-phase input, nominal voltage 400V (±10%), frequency 50Hz.
• 24V auxiliary circuit input, frequency 50Hz.
• Power line protected from overcurrent by automatic magneto-thermal circuit breaker (for each group of fans).
• Built-in fan overload protection (in the case of a fault, only the faulty fan will stop).
• "By-pass" function: in the case of a communication BUS malfunction, to prevent plant shutdowns, the fans automatically start running at the max. set speed.
• Volt-free contacts for controlling PLC remotely.
• Volt-free contacts for fan malfunction alarm signals.
• Programmable volt-free contacts.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2014/35/EU.
• UL certification, CSA certification available on request.

Functions:
• Proportional-Integral-Derivative heat regulation.
• For remote control (reference: speed or temperature/pressure setpoint) with 0-10V signal or field BUS.
• Limits fan rotation speed (ex. to limit noise levels during the night).
• Enables anticlockwise fan running to clean finned heat exchangers.
• Sends an analog 0-10V signal proportional to fan speed (0-100%).
• Update software with USB stick, without using a PC.
• Optional: for regulating 2 independent fan banks separately and independently (ex. different rotation speeds).
• Optional: Ethernet connection (ex. control parameters on a web page, remote assistance from the works, software update, etc.).
• Optional: sends an e-mail to max. 10 users for each alarm event (if the e-mail addresses have been registered in the PLC memory and the system is connected to Ethernet).

Connectivity
Full remote control (over 900 parameters available) through field BUS (standard: MODBUS RS485; on request: LonWorks®, BACnetTM, SNMP, Konnex®).

OPTIONAL COMPONENTS FOR WIRING

S

REPAIR SWITCHES INSIDE SWITCHBOARD

• Power ON/OFF switch per each fan (black handle)
• The selector switch can be locked in the OFF position
• Protection class IP55
• Factory fitted and wired

O

REPAIR SWITCHES INSTALLED CLOSE TO THE FAN

• Power ON/OFF switch per each fan (black handle)
• The selector switch can be locked in the OFF position
• Protection class IP65
• Factory fitted and wired

M

MOTOR PROTECTION UNITS WITH THERMOCONTACTS

Generalities:
The motor protection units type S-DT16(E) are specifically designed for the start-up and the protection of 3-phase motors with integral thermocontacts. The integral line protection is assured by a thermal over-current sensor and a magnetic short circuit releasing element. The thermocontact switches automatically OFF in case of motor overheating.

Technical features:
• Line voltage 60 .. 500 V (+6%), 50/60 Hz. Applicable from 60 V when voltage control is in use
• Max. line fuse: 80 A (Ue 415 V + 5 %) / 63 A (Ue 440 V .. 500 V + 6 %)
• Max. rated current of motors: 16A
• Setting range over-temperature sensor: 10 .. 16 A
• Rated Short Circuit Breaking Capacity (IEC 60947-2, EN 60947-2, VDE 0660-101): 6 kA (Ue < 400 V + 5 %) / 3.5 kA (Ue = 415 V .. 440 V) / 2.5 kA (Ue 500 V + 6 %)
• Max. adjustable line cross section: 6 mm2 (auxiliary contact: 2,5 mm2)
• Limit ambient temperatures: -25°C / +55°C
• Protection class IP55 or version IP20 for built in

Mm

MOTOR PROTECTION UNITS WITH THERMOCONTACTS (SINGLE-PHASE FAN MOTORS)

Generalities:
The motor protection units type S-DT10(E) are specifically designed for the start-up and the protection of single-phase motors with integral thermocontacts. The thermocontact switches automatically OFF in case of motor overheating.

WARNING!: thermal bi-metal relays cannot be adjusted to the nominal current of the motors.

Technical features:
• Power supply: 1+N~ 230V (from 60V when voltage control is in use)
• Max. fuse: 10A
• Min. rated current of motors: 0,4A
• Max. rated current of motors: 10A
• Max. adjustable line cross section: 6 mm2 (auxiliary contact: 2,5 mm2)
• Admitted ambient temperatures: -25°C / +55°C
• Protection class IP55 or version IP20 for built in

DPWS

DUAL POWER SWITCH

• Automatically switches between two power supplies
• Lockable switch
• Protection class IP55
• Factory fitted and wired

ATTENTION:
The power supply must provide for the neutral electrical conductor

SPEED CONTROLLERS

Rm

ELECTRONIC 1~ VOLTAGE CONTROLLER (PHASE-CUT)

Description: 
Continuous regulation of the asynchronous fans speed. The speed controller works on the fans supply voltage and varies their speed according to the input signal and to the settings.
Models: PKE 2,5 (max 2,5) , PKE 6 (max 6A), PKE 10 (max 10A), PKE 14 (max 14A), PKE 16 (max 16A), PKE 20 (max 20A)

• Valid for both functionings: Dry Coolers and Condensers.
• TFT temperature probe or pressure (4 • 20mA) probe mounted and wired; in alternative speed control referred to an external 0-10V tension.
• IP54 degree of protection.

Technical data:
• Power supply: 1 phase ~ 230V / 50/60Hz (-15% / +10%)
• IP54 degree of protection.

• Standard settings: single set point

R

STANDARD SPEED REGULATOR (TRIAC)

Description:
Continuous AC fan speed regulation. The regulator adjusts the fan input voltage to regulate the speed on the basis of the signal sent by the sensor and the settings.
N.B.: this type of regulator can produce electromagnetic noise due to the control technology used. The sound power level and the sound pressure level of the air-cooled equipment in the specifications do not consider said noise.
The speed regulator is supplied installed, wired, programmed and ready-to-use.

Overview:
-Multifunction/multilingual LC-Display for simple, fast programming.
• IP54 degree of protection (EN 60529).
• Operating temperature 0 °C / +40 °C (down to -20 °C as long as equipment is connected to power source, up to +55 °C at reduced power).
• Permitted relative humidity 85% (no condensation).
• Temperature or pressure sensors installed and wired.
• Shielded cables are not required.

Technical data:
• 3-phase input, nominal voltage 208 / 415V (• 10% / +6%), frequency 50 / 60Hz.
N.B.: the dimensioning of the panel and the capacity of the regulator is optimized for the nominal current drawn by the fans, on the basis of the type of connection (Triangle or Star).
• Sensors nominal voltage 24V (20%), max. permitted current 120 mA.
• 2 analog inputs (0-10V, 0-20mA, PTC temperature sensor, pressure transducer).
• 1 programmable analog output (0-10V).
• 2 programmable digital inputs.
• 2 programmable digital outputs: alarm signal, external unit control.
• Full motor protection with thermal contacts or thermistors
• Compliant with EC Standards EN 61000-6-2, EN 61000-6-3 and EN 61000-3-2.
• Compliant with EC Directives 2014/35/EU LVD and 2004/108 EMC.

Connectivity:
• MODBUS RS485 communication interface.
• Optional: equipped with LON board.

Standard programming:
• Set-point 1: temperature or pressure (dual circuit condensers: adjustment at highest pressure value detected).
• Set-point 2: temperature or pressure.
• Regulator alarm signal.
• Speed limiting.
• Control of machine on-board systems (adiabatic systems).
• Switch out fans being regulated at low speed.
• Other special programming available in relation to regulator's characteristics.

Im

FREQUENCY INVERTER 1~ VOLTAGE WITH SINE FILTERS

Function:
Designed for a stepless control of fans, generates a 3~ output with variable voltage and frequency from the three-phase mains on the input and therefore assures an absolute parallel control of the fans without risk of damage for the motors.
Screened motor cables are not required.
Allows for energy saving and for a considerable reduction of the peaks of noise in part load. This controller is highly recommended in case of low or very low noise limitations (residential areas, hospitals, etc.).

Generalities:
• Integrated Sine filters between phase-to-phase and phase-to-ground
• LCD-Multifunctional display with plain language text
• 2 analog inputs (0-10V, 0-20mA, PTC temperature sensor, pressure sensor)
• 1 output 0-10V, function programmable
• 2 digital inputs, function programmable
• 2 relay outputs, function programmable: fault indication/alarm signal, external group control
• Total protection of the motors by means of thermocontact / thermistor connections
• RS485 Interface for MODBUS networking
• No need of shielded cables between controller and fan motors
• Factory fitted, wired and pre-programmed ready for use
• Temperature or pressure sensor factory fitted and connected

Optional (on request):
• LON expansion module

Technical features:
• Power supply: 1~ 208-277V (-15% / +10%), 50/60Hz
• Voltage supply for sensors: +24V +20% (lmax 120mA)
• EMC emission EN 61000-6-3; EN 61000-3-2
• EMC immunity EN 61000-6-2
• Max. admitted ambient temperature +40°C (up to +55°C with derating)
• Min. admitted ambient temperature +0°C (-20°C when powered)
• Max. admitted relative humidity to avoid condensation: 85%
• Protection class IP54

Setting modes available:
• Set point 1: fluid out temperature or refrigerant pressure
• Set point 2: fluid out temperature or refrigerant pressure
• Controller alarm
• Min. and max. output voltage, speed limitation (e.g. for night operation)
• External group control (adiabatic cooling system)
• Cut-off of fans in low usage (minimum air volume)
• Other programming modes available on request (e.g. frost protection, heat activation, stalled motor heating, etc.)

NOTE: The controller is designed for the total absorbed fan current, which value depends on the motor windings (Delta or Star)

I

INVERTER SPEED REGULATOR FREQUENCY WITH SINUSOIDAL FILTERS INSTALLED

Description:
Continuous AC fan speed regulation. The regulator regulates the fan input frequency and voltage to adjust the speed on the basis of the signal sent by the sensor and the settings.
The inverter speed regulator guarantees substantial energy savings and reduces the noise level of the fans being regulated. The inverter speed regulator is ideal for environments with extremely restrictive noise limits.
The speed regulator is supplied installed, wired, programmed and ready-to-use.

Overview:
• Multifunction/multilingual LC-Display for simple, fast programming.
• IP54 degree of protection (EN 60529).
• Operating temperature 0 °C / +40 °C (down to -20 °C as long as equipment is connected to power source, up to +55 °C at reduced power).
• Permitted relative humidity 85% (no condensation).
• Temperature or pressure sensors installed and wired.
• Shielded cables are not required.

Technical data:
• 3-phase input, nominal voltage 208 / 480V (• 15% / +10%), frequency 50 / 60Hz.
N.B.: electrical systems with NEUTRAL isolated from ground (IT) can only be used on special versions.
N.B.: the dimensioning of the panel and the capacity of the regulator is optimized for the nominal current drawn by the fans, on the basis of the type of connection (Triangle or Star).

• Sensors nominal voltage 24V (20%), max. permitted current 120 mA.
• Phase/phase and phase/earth omnipolar sinusoidal filters.
• 2 analog inputs (0-10V, 0-20mA, PTC temperature sensor, pressure transducer).
• 1 programmable analog output (0-10V).
• 2 programmable digital inputs.
• 2 programmable digital outputs: alarm signal, external unit control.
• Full motor protection with thermal contacts or thermistors
• Compliant with EC Standards EN 61000-6-2, EN 61000-6-3 and EN 61000-3-2.
• Compliant with EC Directives 2006/95 LVD and 2004/108 EMC.

Connectivity:
• MODBUS RS485 communication interface.
• Optional: equipped with LON board.

Standard programming:
• Set-point 1: temperature or pressure (dual circuit condensers: adjustment at highest pressure value detected).
• Set-point 2: temperature or pressure.
• Regulator alarm signal.
• Speed limiting.
• Control of machine on-board systems (adiabatic systems).
• Switch out fans being regulated at low speed.
• Other special programming available in relation to regulator's characteristics. 

U

EC CONTROLLER

Description:
Continuous EC fan speed regulation. The regulator modulates a 0-10V signal on the basis of the signal coming from the sensor and the settings. The signal is reprocessed by the electronics on-board the EC fans that adjust the rotation speed.
The universal control module using EC fan technology guarantees substantial energy savings and reduces the noise level of the fans being regulated. The universal control module is ideal for environments with extremely restrictive noise limits.
The speed regulator is supplied installed, wired, programmed and ready-to-use.

Overview:
• Multifunction/multilingual LC-Display for simple, fast programming.
• IP54 degree of protection (EN 60529).
• Operating temperature 0 °C / +55 °C (down to -20 °C as long as equipment is connected to power source).
• Permitted relative humidity 85% (no condensation).
• Temperature or pressure sensors installed and wired.
• Shielded cables are not required.

Technical data:
• Single-phase input, nominal voltage 230V (-15% / +10%), frequency 50 / 60Hz.
• Sensors nominal voltage 24V (-30% / +20%), max. permitted current 70 mA.
• 2 analog inputs (0-10V, 0-20mA, PTC temperature sensor, pressure transducer).
• 2 programmable analog outputs (0-10V).
• 2 programmable digital inputs.
• 2 programmable digital outputs: alarm signal, external unit control.

Connectivity:
MODBUS RS485 communication interface.

Standard programming:
• Set-point 1: temperature or pressure (dual circuit condensers: adjustment at highest pressure value detected).
• Set-point 2: temperature or pressure.
• Regulator alarm signal.
• Speed limiting.
• Control of machine on-board systems (adiabatic systems).
• Switch out fans being regulated at low speed.
• Other special programming available in relation to regulator's characteristics. Other special programming available in relation to regulator's characteristics.

N.B.: the electrical power line must have a neutral conductor.

ADIABATIC SYSTEMS

B

SPRAY ADIABATIC SYSTEMS

Description:
Water atomization system that increases the performance of the air-cooled equipment: a fine fog of water drops is sprayed into the air intake through special nozzles.
Adiabatic saturation reduces the air temperature, increasing the efficiency of the heat exchanger.
The system does not recirculate the water and meets the requirements of Standard VDI 2047-2 certified for health and safety by the Johannes Gutenberg University of Magonza.
The adiabatic system is managed by a speed regulator installed on-board the air-cooled equipment. The adiabatic system is supplied installed, wired and ready-to-use.
N.B.: the maximum limit of use of the adiabatic system is 150 hours/year

Overview:
• Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature: +10°C / +50°C.
• Hour counter for monitoring system operating time.
• Safety thermostat for draining the system in winter
• Pressure reducer for calibrating the water supply.
• Control pressure switch.
• SOFTWATER electromagnetic decarbonisation unit to minimize the formation of scale in the finned core
• Solenoid valves for supplying and draining the system (the water is drained when the system isn't used).
• Multilayer UV-resistant water supply pipes (PE-Xb / Al / PE-HD)
• Polyamide (PA) hollow cone nozzles.
N.B.: the atomizing system must run at a pressure of 2.5 bars to operate properly. Do not use lower pressures.
At a pressure of 2.5 bars, the flow rate of each nozzle is 1.11 litres/minute.

Technical data:
• Single-phase input, 230 V, frequency 50 Hz.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2006/95/EC.

RECOMMENDED WATER QUALITY
To guarantee system health and hygiene:
• Use drinking water that meets the requirements of EC Directive 98/83.
• Total bacterial count <1000 cfu/ml
• If there is any doubt about possible bacterial contamination of the drinking water used to supply the system, an optional UV water sterilization kit is available.

To prevent corrosion of the fined core:
• 6 < pH < 8
• Conductivity <1500 µS/cm
• Chlorides < 100 ppm

To prevent the formation of scale in the finned heat exchanger:
• Hardness 2-4 °f = Max. 1.1-2.2 °dH = Max. 20-40 ppm of CaCO3.
• Use a water softener if necessary.

N.B.: the temperature of the atomized water must be at least 5K lower than the temperature of the process fluid flowing out of the heat exchanger.

Z

INDUSTRIAL ADIABATIC SYSTEMS (PADS)

Device for humidifying the intake air through adiabatic panels increasing the unit performance.

Description:
Intake air wetting system with evaporator panels that increases the performance of the air-cooled equipment: the intake air is forced through the wet panels.
Adiabatic saturation reduces the air temperature, increasing the efficiency of the heat exchanger.
The system does not recirculate the water and meets the requirements of Standard VDI 2047-2 certified for health and safety by the Johannes Gutenberg University of Magonza.
The adiabatic system is managed by a speed regulator installed on-board the air-cooled equipment.
Standard shipment (optimized for common means of ground transportation): the evaporator modules are supplied separately from the air-cooled equipment (only “Combo” and “Superjumbo” models).
The industrial adiabatic system is supplied fully installed, wired and ready-to-use.

Overview:
-Box made of UV-resistant plastic, IP55 degree of protection (EN 60529).
• Operating temperature: +10°C / +50°C.
• Hour counter for monitoring system operating time.
• Ambient temperature and humidity sensor.
• Electrically actuated valves for supplying and draining the system (the water is drained when the system isn't used).
• Multilayer UV-resistant water supply pipes (PE-Xb / Al / PE-HD).
• Manual brass flow regulator.
• Aluminum distributor (1050-H24 alloy in compliance with EN 573-3) fully accessible for inspection, painted on request.
• Aluminum self-draining drip tray (1050-H24 alloy in compliance with EN 573-3), painted on request.
• Pure recyclable cellulose humidifier panel, with high power of absorption, impregnated with biocidal and antibacterial agents.
• Pure recyclable cellulose water drop distributor and separator panel.
• Galvanized, arc-welded protective mesh, painted on request.

Technical data:
• Single-phase input, 230 V, frequency 50 Hz.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2006/95/EC.

RECOMMENDED WATER QUALITY
To guarantee system health and hygiene:
• Use drinking water that meets the requirements of EC Directive 98/83.
• Total bacterial count <1000 cfu/ml
• If there is any doubt about possible bacterial contamination of the drinking water used to supply the system, an optional UV water sterilization kit is available.

To prevent corrosion of the fined core:
• 6 < pH < 8
• Conductivity <1500 µS/cm
• Chlorides < 200 ppm

To prevent the formation of scale in the finned heat exchanger:
• Hardness <25 °f = 14°dH = Max. 250 ppm of CaCO3.

V

ULTRAVIOLET LAMP FOR ADIABATIC COOLING SYSTEM

Description:
The UV lamp sterilizes the water in the adiabatic system (UV-C rays = 254 nm) emitting UV rays lethal to pathogens (including Legionella), providing an alternative effective solution to chemical biocides.
Unlike chemical treatments, UV sterilization does not use any harmful substances or add any toxic-noxious component to the water.
The intense biostructural disorder induced by this radiation interferes with the development and the reproductive capacity of every kind of micro-organism, making them inoffensive.

Overview:
The UV sterilizing lamp is installed and wired inside the adiabatic system control box.

Technical data:
• Single-phase input, 230 V, frequency 50 Hz.
N.B.: the dimensioning of the lamp size is optimized for the maximum water flow required by the adiabatic system.
• Compliant with Standards EN 60204-1 and EN 61439-1.
• Compliant with European Low Voltage Directive 2006/95/EC.

Additional recommended water quality requirements:
• Fe < 0.3 ppm
• Hardness <12 °f = 6.7°dH = Max. 120 ppm of CaCO3.
• S.A.C. (Spectral Absorption Coefficient) > 20 1/m S.A.C. (Spectral Absorption Coefficient) > 20 1/m

PROTECTION COATINGS

P

PRE-PAINTED HYDROPHOBIC COATING

Description:
The hydrophobic coating gives the drops of water wetting the fin a spheroid shape (contact angle > 50°) for easier draining.

Technical data:
• Aluminum fin made of 8079 alloy (EN 573-3) pre-painted with polyester lacquer.
• Corrosion resistance: 1000 hours (ASTM B117). 

L

PRE-PAINTED HYDROPHILIC COATING

Description:
The " hydrophilic " coating, with high surface tension in other words, gives the drops of water wetting the fin a flattened shape (contact angle < 15°). These conditions favour circulation and the adiabatic saturation of the air between the fins with notable heat exchange benefits.

Technical data:
• Aluminum fin made of 8079 alloy (EN 573-3) pre-painted with hydrophobic lacquer.
• Corrosion resistance: 250 hours (ASTM B117). 

THERMOGUARD®

• Polyurethane based coating.
• High flexible properties.
• Heat conduction and UV resistant properties.
• Prevents chemical and galvanic corrosion.
• Corrosion resistance (ASTM B117): 3000 hours.

BLYGOLD®

• Heat conductive pigmentation.
• Very high chemical resistance at a low layer thickness.
• Corrosion resistance (ASTM B117): 4000 hours.

HERESITE®

• Suitable for marine and salt air environments.
• Withstand exposure to an extensive variety of corrosive and chemical fumes.
• Corrosion resistance (ASTM B117): 6.000 hours.

ELECTROFIN®

• Water-based, flexible cationic epoxy polymer using an electro-coat process.
• It guarantees complete heat exchanger coverage.
• Corrosion resistance (ASTM B117): 6.000 hours.
• C5M & C5I High Durability (ISO 12944).

FRAME SPECIAL COLOURS

All RAL chart available on request.

VIBRATION DAMPERS

A

FEET RESTING ON GROUND

Description:
• Unit load per anti-vibration mount: 100÷400 daN.
• Reduced height.
• Aluminum cap and elastomer protection.
• Rubber component: 60° Shore elastomer mix.
• metal component: aluminum alloy.
• Fixing between machine and anti-vibration mount.
• Feet resting on ground. 

F

BOLTED DOWN TO LOAD-BEARING SURFACE

Description:
• Unit load per anti-vibration mount: 300÷550 daN.
• Reduced height.
• Metal cap and elastomer protection.
• Rubber component: NR 60° rubber.
• Metal component: galvanized steel.
• Fixing between machine and anti-vibration mount.
• Fixing to load-bearing surface.

REFRION S.r.l. Vicolo Malvis, 1 - 33030 Flumignano di Talmassons (UD) - P.IVA 03094850231

DRY COOLER | GAMMA DRY COOLER