LU-VE FHD Dual Discharge Unit Coolers Instruction Manual
- June 4, 2024
- LU-VE
Table of Contents
LU-VE FHD Dual Discharge Unit Coolers
STANDARDS – The products are provided for incorporation in machines as defined n the EC Machine Directive 2006/42/EC and subsequent modifications.
- PED 2014/68/EU
- Safety of Machinery EN 60204-1
- Directive 2014/30/EC and subsequent modifications. Electromagnetic compatibility.
- Low tension – Reference Directive 2014/35/EC
However, it is forbidden to operate our equipment before the machine incorporating the products or making part thereof has been declared to be in conformity with the EC Machine Directive
PRECAUTIONS : guard against any injury risks or damage to materials if these instructions are not followed.
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For moving, installing and maintenance operations it is essential to comply as follows:
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Employ authorized personnel only for using moving equipment (cranes, forklift elevators, etc.).
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Wear work gloves.
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Never remain below suspended loads.
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Before proceeding with electrical wiring it is essential to comply as follows:
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Employ only authorized personnel.
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Make sure the power line circuit is open.
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The main switch on the general power panel is open and padlocked in this position.
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Before proceeding with the header/distributor connections it is essential to:
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Employ only authorized personnel
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Make sure the supply circuit is closed (no pressure).
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When performing welding operations, make sure the flame is not aimed towards the equipment (insert a shield if required).
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DISPOSAL: LU-VE products are made of:
Plastic materials: polyethylene, ABS, rubber.
Ferrous materials : iron, stainless steel, copper, aluminium (possibly treated).
Refrigerant liquids: follow the instructions of the system installer. -
Remove the transparent protection film from painted metallic parts.
SAFETY PROCEDURES
Important safety information is reported on the product and in this manual. Read this installation manual carefully before instal-ling the unit. This document contains additional important instructions for correct installation.
Explanation of guidance
HAZARD
indicates that the item will cause death or serious injury if used incorrectly
WARNING
indicates that the item could cause death or serious injury if used
incorrectly
CAUTION
indicates that the item may cause injury or damage to property, furniture or
pets if the instructions are not followed carefully.
General notes
- This document should be read carefully and retained for future reference.
- Before carrying out any repairs or maintenance, a risk assessment must be carried out and appropriate measures taken to ensure the safety of all personnel.
- All work on the equipment must be carried out by qualified personnel.
- The power supply must be suitable for the supplied equipment.
- The refrigerant, temperature and pressure must comply with the information on the air cooler nameplate.
- Since the exchanger is supplied indirectly, the manufacturer is not aware of the actual application.
- If the equipment is used in the food industry, the end user is responsible for meeting hygiene requirements.
- Install the cooler in accordance with national regulations for cooling and electrical system installation procedures.
- The heat exchanger is suitable for use with the refrigerants indicated on the datasheet or the order documents. The maximum allowa-ble pressure (design pressure – PS) is shown on the nameplate. The design pressure (PS) must not be exceeded during normal opera-tion.
- LU-VE heat exchangers are not generally equipped with a high pressure exhaust valve. The installer is responsible for installing the high pressure exhaust valve on the system in which the heat exchanger is used.
- The use of the heat exchanger for applications and purposes other than those for which it was designed by LU-VE is not permitted.
Liability
The manufacturer shall not accept liability and the warranty for the unit
shall be considered void for damage resulting from:
- Incorrect installation; including failure to follow the instructions in the appropriate manuals.
- Modification of or faults in the electrical or refrigerant or water connection.
- Use of the unit under conditions other than those indicated.
Unit management
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Adequate personal protective equipment must be used.
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Inspect the equipment for damage caused by incorrect handling or transportation: submit an immediate complaint to the carrier.
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Dispose of the packaging material in accordance with local requirements.
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Checks on delivery
All finned coils have been subjected to pressure testing with dry air, then sealed and supplied in a state of slight overpressure. Before installation, check there are no leaks using a Schrader valve. -
Use appropriate equipment when lifting the unit (e.g. lifting device, trolleys, etc.).
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Do not step on or place anything on the external unit. This could cause injury or damage to the unit.
Installing the units
Installation must be performed by a qualified installer. Do not install in a
location: Where access for installation and maintenance is difficult.
- Too close to heat sources.
- That may increase the vibration of the unit.
- That cannot support the weight of the unit.
- Subject to risk of exposure to combustible gas.
- Exposed to oils and vapours.
- With unusual environmental conditions.
Choose a place:
- Where the noise and exhaust air are within the limits permitted by applicable standards and regulations.
- Protected from headwinds.
- With the required space.
- That will not block passageways or doors.
- With a floor structure that is strong enough to support the weight of the unit and minimize vibration transmission.
INSTALLATION
- Allow sufficient space on the air intake side. The air exhaust side must be free from obstacles. Avoid potential air short circuits.
- Ducting must not be connected either on the air intake side or on the exhaust side, unless it has been specially designed for this purpo-se.
- Install the coolers so that they have enough space to contract and expand. All weight and dimension information is provided on the nameplate and/or in the product documentation.
- The exhaust lines must be positioned to facilitate outflow. In cold rooms, exhausts must be equipped with external or internal resistors to prevent freezing.
- Make sure that no loads are transmitted from the connection lines to the cooler pipes.
- All pipes must be properly fitted to the walls or ceilings of the cold room and not only on the cooler.
- Adequately support all lines to prevent vibration or external loads on cooler manifolds, etc.
HAZARD
- Sharp corners and edges – there is a high risk of injury due to the sharp corners and edges of the finned coil and fairing. Always use suitable protective clothing and equipment before handling the unit and conducting maintenance activities.
- Drip tray – before handling and removing the drip tray, make sure it is completely empty. If the drip tray opens accidentally, the weight of the water or ice residue may cause harm or injury to the operator.
- Side panels – removable side panels must only be opened by qualified personnel. Make sure that the side panels are correctly locked in place after closing.
- Fans – the rotating fans may cause injury to fingers. Never operate fans without a protective grille and be careful when wearing loose or unfastened clothing. Disconnect the power supply before conducting any maintenance operations.
- Electrical components – the power supply must be disconnected before any maintenance activities or operations are performed on electrical components of the unit.
- Burns or freezing – the distribution pipes can be extremely cold or hot, and the heater elements for defrosting can become very hot. Use adequate protection.
- Refrigerants – refrigerant gases may be toxic and/or flammable. These substances must only be handled by qualified personnel who are able to take all appropriate precautions and to follow the applicable regulations.
- Fan vibrations – continuous fan vibrations can cause material faults and failures, resulting in injury or damage from loose parts. It is therefore necessary to always try to minimize vibrations.
ELECTRICAL CONNECTIONS
All on-site electrical connections are the responsibility of the installer.
HAZARD
Electric shock can cause serious bodily injury or death. These operations must
only be performed by qualified personnel.
WARNINGS
- This unit complies with the Machinery Directive (2006/42/EU), Electromagnetic Compatibility Directive (2014/30/EU), and Pressure Equipment Directive (PED 2014/68/EU).
- To avoid electric shock or fire, make sure that these operations are only performed by qualified personnel.
- Make sure that the national safety code requirements for the main power supply circuit have been met.
- Follow all current requirements of the national safety code.
- Make sure there is a properly sized and connected ground wire.
- Make sure that the mains voltage and frequency are those required; the available power must be suitable to operate any other equip-ment connected to the same line.
- Check that the impedance of the mains supply conforms with the power input of the unit indicated on the unit nameplate.
- Make sure that appropriately sized safety switches and isolators are installed on the unit in the off position.
- Mains disconnection devices must allow complete disconnection under overvoltage category III conditions.
- Electrical components – the power supply must be disconnected before any maintenance activities or operations are performed on electrical components of the unit.
- Burns or freezing – the distribution pipes can be extremely cold or hot, and the heater elements for defrosting can become very hot. Use adequate protection.
- Refrigerants – refrigerant gases may be toxic and/or flammable. These substances must only be handled by qualified personnel who are able to take all appropriate precautions and to follow the applicable regulations.
- Fan vibrations – continuous fan vibrations can cause material faults and failures, resulting in injury or damage from loose parts. It is therefore necessary to always try to minimize vibrations.
CAUTION
- Attach the connection cable correctly. If the connection cable is incorrectly connected, the electrical parts may be damaged.
- The cable should only be replaced by technical support in order to prevent any risk.
- Use the cables specified for the wiring and connect them securely to the terminals.
WARNING
- Be sure to provide grounding; incorrect grounding can cause electric shock.
- Do not connect ground wires to gas pipes, water pipes, lightning conductors or ground wires for telephone cables.
HAZARD
Do not modify this unit by removing any of the safety guards or bypassing any
of the safety interlock switches.
Contact the technical service if any of the following occurs:
- Hot or damaged power cable;
- Unusual noise during operation;
- Frequent operation of protective devices;
- Unusual smell (such as a burning smell).
SERVICE AND MAINTENANCE CAUTION
- Adequate personal protective equipment must be used.
- Non-routine maintenance operations must be carried out by specially trained personnel. Disconnect the mains power before performing any maintenance or handling any part of the unit.
INSTALLATION
Before lifting the units, please check the structural integrity of the lifting devices and their proper fixing to the structure
- Remove end covers (A) by loosening screws (B), (draw both brackets (C) on installation position by unscrewing screws (D).
- Install suitable studs (E) to cold room ceiling taking into account the slot size (C), and fixing dimensions of unit cooler (Table).
- Lift the unit cooler, lead securing studs/bolts (E) through the cooler brackets (C), and fixing the unit to cold room ceiling by securely tightening nuts and washers.
CONNECTIONS
Before to proceed with the collectors/distributors connections it is man- datory to comply as follows make sure the supply circuit is closed (no pressure).
Open the drain pan (F) – (1 – 2). To connect: Fig. 1
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The suction line (H), the thermostatic valve (I) to the distributor (L), the liquid line (M) to put it near the suction line.
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Pressure check (Te , Fig.5); all units are fitted with a shrader valve on the suction pipe, so that the suction pressure can be measured for correct operation.
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The water drain tubing connection (O) after drain pan is closed (F) Fig. 2.
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When performing welding operations, make sure the flame nozzle is not aimed toward the equipment (insert a shield of required).
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Before proceeding with the electrical wiring it is mandatory to comply as follows make sure the power line circuit is open (disconnected).
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To be connected: Fig. 3
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The units have to be connected to the electric supply according to the rules of the local energy supplier and / or according to the current standards in force in that country.
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The installer should mount a single pole terminal in a visible position, between the unit and the electric supply, which should have a minimum 3 mm opening between the terminals, in accordance with current legislation.
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Remove the terminal cover (P) feed the cables through grommets (U) and block them with their respective gland attaching them to the terminals in accor-dance with the wiring diagrams shown on the cover.
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When all connections are made refit the terminal block cover.
N.B.: For systems using electric/hot gas defrost, a defrost termination thermostat should be used, having a range of 10 deg C to 20 deg C with a sensor atta ched to the top return bends of the coil block or buried in the top of the coil block fins (Q).
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ATTENTION : The appliance does not have differential protections and circuit breakers which are the responsibility of the installer.
COOLER CAPACITY CHECKS
Take the following temperature and pressures: (Fig. 4)
Ts’ – Cold room air inlet temperature to the unit.
Te – Evaporating temperature, relating to the refrigerant pressure on the
unit cooler outlet.
Trs – Refrigerant superheat temperature, on suction line near
thermostatic valve bulb.
N.B. – For optimum unit cooler performance the superheat (Trs-Te) shoud
not be higher than 0,7 x (Ts’-Te).
The thermostatic valve fitted must be correctly sized for the installation
conditions and adjusted for correct system operation.
N.B. Keep the superheat as low as possible to obtain maximum unit cooler
performance.
Electric Connection
FAN MOTORS
Before proceeding with electrical wiring, it is essential to: ensure that the power supply circuit is open.
- Energy-saving EC fans are available on request; see the instructions for these fans for more details.
Diagram of junction box connection- 2 speed
OPTIONAL
MAINTENANCE
Before any service operations are performed switch off the electricity supply to the cooler.
Heater Replacement
- To replace electric heaters,“FHD” , it is necessary to open the drain pan (F-G) – (1 ÷ 4) remove fixing clips (T), disconnect cables from terminal block (P).
Motor Substitution
Before any service operations are performed switch off the electricity supply
to the cooler.
ACCESSORIES
Before any service operations are performed switch off the electricity supply
to the cooler
Assembly sequence for the automatic pump water drain
- Remove the side covers (1).
- Open the water collection group (2).
- Fix the upper part of the water collection group using the additional fixing nut (3) and add the gasket (4).
- Connect the electric cable (5) to the floating group and the water delivery pipe (6) to the pump (9).
- Close the water collection group (2).
- Apply the pump fixing plate (8) to the opposite side of the unit.
- Fix the pump (9) to the plate (8), connect the electric cable (5), the delivery pipe (6) and the remote water drain pipe (10).
OPERATION
- Air inlet temperature min/max: -25°C/+30°C
- Fluid inlet temperature min/max: -40°C/+20°C
- The units fitted with thermostatic expansion valve (Danfoss TES 2) have a preassembled orifice according to the following table valid for R404A refrige-rant operation under SC1 condition (Troom +10 °C, T evap. 0 °C) and SC2 condition (T room 0 °C, T evap. -8 °C). For different conditions check the valve and orifice selection.
OPTIONAL
- Remove the adapter and braze the inlet line, check that the orifice complies with the specifications, re-assemble the orifice and the adapter respecting the torque wrench setting.
- Fix the bulb on the outlet pipe in horizontal section before the equalizer as shown in the picture respecting the torque wrench setting.
- Adjust the valve overheating by the proper screw.
- We reserve the right to make modifications in order to improve the performance or appearance of our products at any time without notice and without any obligation to previous production.- All technical characteristics are stated in the products catalogs.
CERTIFICATIONS
All rangers FHD are EUROVENT certified.
Certified data:
- Capacities (ENV 327)
- Air quantities
- Motor power consumption
- External surfaces
LU-VE S.p.A.
21040 UBOLDO VA ITALY – Via Caduti della Liberazione, 53
Tel. +39 02 96716.1 – Fax +39 02 96780560
E-mail:sales@luvegroup.com
www.luve.it
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