TYPES OF WIRING

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.

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. 

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.

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

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

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

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.

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. 

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