TYPES OF WIRING

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

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

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

ADIABATIC SYSTEMS

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.

A.S. MANAGER

A unique controller for the control and diagnostics of all Refrion adiabatic systems and related on-board equipment (pressure, temperature and humidity sensors, UV lamps, actuation valves).

Overview:
• Enclosure in UV resistant plastic, protection rating IP54 (IEC Standard 60529).
• Operating temperature -25°C +50°C
• Multifunction LCD Display (resolution 128x64), remote control distance 600m
• 4 control buttons
• Multilanguage menu

Technical data:
• Single-phase supply, voltage 100-240V, frequency 50/60Hz.
• Power supply overcurrent protection using fuse
• USB Host Interface allows flash drive connection to upgrade software and download data logs
• RS485 interface
• Signal buzzer
• Electromagnetic system for reducing limescale build-up
• Complies with European Directive 2014/30/EU EMC
• Complies with European Directive 2014/35/EU LVD

Features:
• Non-volatile memory to retain parameters and event logs
• RTC (Time/Date) with battery backup
• Humidity/temperature sensor
• Input: remote start/stop (clean contact or Modbus)
• Output: operating state (clean contact)
• Output: alarm state (clean contact)
• Output: room thermostat state (clean contact)
• 2 password levels: user/manufacturer

Connectivity:
• RS485 Modbus RTU Slave communication interface

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).

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