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USER MANUAL MODEL AEF 12/1-EU

ACOSTIC EXTRA FREEZING CABINET “Easy Freezer”

MODEL AEF 12/1-EU

06/2023



1. INTRODUCTION

2. DESCRIPRION

3. SAFETY

4. INSTALLATION

5. FREEZING PROCESS

5.1. SELECT PACKAGE TYPE

5.2. SELECT WORK MODE

5.3. SELECT AEF CHANNEL

5.4. SELECT OTHER PARAMETERS AND STAR

5.5. SELECT OTHER PARAMETERS AND START

6. RECOMMENDATIONS ON AEF FREEZING

7. SPECIFICATIONS

8. TROUBLESHOOTING

9. SERVICE AND MAINTENANCE

10. TRANSPORTATION

11. WARRANTY AND TECHNICAL SUPPORT

12. CERTIFICATION

13. RECYCLING AND UTILIZATION

14. CONTACTS

 

1. INTRODUCTION


The Acoustic Extra Freezing (AEF) Freezer AEF 12/1-EU (hereinafter - AEF FREEZER) is designed for high quality freezing of raw and processed food.


Food frozen in AEF FREEZER can be stored and transported in a conventional cold chain at the temperature equal or below -20°С.


The main difference between AEF freezing technology and conventional methods of freezing is the preservation of food cells during the freezing process through the use of AEF channels (‘Individual Freezing Algorithms’) for different types of food.


AEF significantly reduces weight loss of a frozen product which occurs from the evaporation of a liquid (drying of the product), typical for standard methods of freezing when needle-like ice crystals damage cell membranes.


AEF frozen food preserves taste and nutritional value because lipids do not oxidize, proteins do not dehydrate. As a result, shelf life of AEF frozen food doubles, without a loss of quality.


WARNING!


Personnel responsible for installation, operations, transportation, and maintenance of AEF FREEZER shall read the User Manual carefully. The Manual shall be in easy access for operators and maintenance staff.


The Manufacturer / Seller will not be liable for any breakage, accidents or faults due to non-compliance with the instructions of this Manual.


The Manufacturer / Seller will not be responsible if a user makes any modifications or if non-authorized accessories are installed in the unit. The Maintenance operations to be carried out exclusively by an authorized service organization.


AEF FREEZER operates at ambient temperature from +3°С to +30°С and relative humidity from 40% to 70%.

 

2. DESCRIPRION


Between the outer and inner the walls of the freezer there are transducers (‘Acousters’) of AEF module and a layer of high-density polyurethane foam for insulation.


Inside the freezer there is an air cooler with two fans that provide equal distribution of air flows and a rack for 12 trays GN 1/1 or 600х400 mm.


WARNING!


Do not place magnetic / metal objects inside the frame. Use only non-magnetic packaging for food and trays made of non-magnetic steel (e.g. AISI 304), plastic or aluminum.


It is strictly prohibited: unauthorized opening of the AEF module, measuring its physical parameters, reverse engineering.


The AEF Module loses its working capacity after opening and can be restored to working condition by a Manufacturer’s employee. In case of unauthorized opening of a freezer's AEF module, warranty voids and the buyer shall pay EUR 5000 fee. In addition, the buyer shall cover travel and accommodation expenses of Manufacturer’s employee for a visit.


The Cooling Unit is a closed pressure system that comprises of compressor, evaporator, sensors and temperature-control valve.


For constant temperature measurement in the chamber, a temperature-sensitive sensor is mounted on the grill of an air cooler fan. When a selected temperature level is reached in the chamber, a controller turns off a compressor, and when the temperature rises above the set temperature, the controller turns the compressor on.


The operation of the acoustic freezing system is controlled by AEF Module (‘Ice Processor’) with special software that generates signals to create fields of the desired configuration and power for each type of product.


The operation of the Cooling Unit is controlled by a controller designed to maintain the desired temperature in the usable space of AEF Freezer.


The parameters of a product, package and temperature shall be chosen on an LCD screen (Fig. 1)


Fig. 1

 

3. SAFETY


AEF FREEZER belongs to the 1st class according to the standard ‘IEC 60335-1:2013 Household and similar electrical appliances - Safety - Part 1: General requirements.


AEF FREEZER shall be operated only by personnel qualified for operation and maintenance of cooling equipment and familiar with the User Manual.


During operation of AEF FREEZER follow the safety rules:

  • connect AEF FREEZER to an electricity socket that has automatic switch and grounding circuits;

  • do not leave operating AEF FREEZER without attendance;

  • cleaning shall be done only after disconnecting AEF FREEZER from the electric socket;

  • regularly check electric wires and grounding;

  • in case of unusual work of AEF FREEZER - sharp sounds, strong vibrations, smoke, traces of lubricant, etc. - operating personnel should immediately switch off the Freezer.

  • if case of refrigerant leakage, disconnect AEF FREEZER immediately from the electricity, switch on ventilation system or open door and windows, do not smoke or use direct flame.


WARNING!


Only qualified personnel must perform installation, operation, and maintenance of AEF FREEZER


Do not block ventilation holes located on the body frame of AEF FREEZER

 

4. INSTALLATION


Before installing AEF FREEZER, perform a visual check, remove protecting film from all surfaces, clean and dry the surfaces.


AEF FREEZER shall be installed in a dry, well-ventilated place. AEF FREEZER shall be located not closer than two meters to heating equipment.


Do not place the Freezer under direct sunlight.


For proper air circulation, leave at least 20 cm space between AEF FREEZER and a wall behind it.


Insert AEF FREEZER’s electric plug to a single-phase 230V electric socket, with grounding and an automatic transfer switch, according to TN-S or TN-C-S of IEC 60364 Low-voltage electrical installations.


WARNING!


Connection to electricity shall be carried out only by an authorized technician.


The space between AEF FREEZER and a wall behind it shall be at least 20 cm.


The distance between AEF FREEZER and heating equipment shall be at least 2 m.


Do not switch on AEF FREEZER right after delivery and unloading. It should stay idle at least 8 hours to.

 

5. FREEZING PROCESS


The process of freezing food in AEF FREEZER comprises of the following steps:

5.2. SELECT PACKAGE TYPE


The type of packaging affects on the freezing time of the product. Press the button and choose one of the options from the drop-down menu as shown below (Fig. 2). Selection is made by pressing the required option.


Fig. 2


5.3. SELECT WORK MODE


Press the button and choose one of work modes from the drop-down menu (Fig. 3).


FREEZE AEF freezing already chilled products;


CHILL cooling hot products usually starting from +90°C and finish +5°C;


CHILL +


FREEZE AEF cooling hot products and acoustic freezing them after cooling;


WARM UP thawing frozen food and warm it up with fluence of acoustic waves.


Usually starting from -20°C and warm up to +5°C.


MASSAGE 1 massage for injected meat or make taste of some types of food stronger;


MASSAGE 2 massage for injected meat or make taste of some types of food stronger;


MASSAGE 3 massage of dry products to enhance the extraction of beneficial and

aromatic substances.


DEFROST CABINET removing ice from internal parts. Takes 30 minutes. Before starting remove food from cabinet.


Fig. 3


5.4. SELECT AEF CHANNEL


This is a standard set of AEF channels that can vary due to a customer’s requirement. Pictures do not reflect all types of products that can be frozen using the particular channel. Consult with the Manufacturer to find a suitable channel for a specific product.


Use NEXT button to move to screen with next nine channels.


5.5. SELECT OTHER PARAMETERS AND START


AEF Cabinet count estimated time of job bases on selected parameters of product and selected mode. You can manually change calculated time pressing + and – buttons. If you select another channel, thickness, mode or type of package on screen will be installed new estimated time of process.


Select initial temperature of a product: the higher initial temperature, the longer will be the freezing process. It is recommended to cool down products before freezing to get the best quality. For cooling and freezing select mode “CHEEL AND FREEZE”.


Choose thickness of a product as the size affects freezing time.


After specifying all the settings, freezing time is calculated automatically. Nevertheless, actual freezing time of a particular product depends on moisture content, type of package, size and shape of the product, ambient temperature, etc.


If you need, adjust manually time of freezing, if necessary, based on your experience of the freezing process.


After pressing START button, the selected mode will starts.


During the process, LCD screen shows a selected channel, temperature in the chamber, and time left until the end of freezing (Fig. 4).


Fig. 4

 

6. RECOMMENDATIONS ON AEF FREEZING


Time to freeze a product to -18°С in its center, depends on initial temperature of the product, thickness, product type, shape, and package.


For most products, 0°… +5°С is the optimal temperature range for starting the AEF freezing process. If there is +30°С inside a product, and -35°С inside AEF FREEZER, the 65°С difference between the product’s surface and core will cause internal tension and deformation.


For a quick-freezing process, products shall be vacuum packed or placed on trays without any package. In that case, the average speed of freezing will be twenty millimeters per one our.


It is not recommended to freeze food packed in blocks, in thick cardboard or modified atmosphere packed products. For such kinds of package time of freezing increases 2 – 2.5 times.


Actual freezing time for a particular product in a certain package shall be checked experimentally.


After finishing freezing process, AEF FREEZER automatically switches to -24°С storage mode for two weeks. The tiny ice crystals inside frozen product have been already shaped and the product can be moved for storage to a conventional freezing chamber with temperature -18°С and lower.


To avoid fluctuations of temperature due to opening doors of chamber, it is recommended to store products under -24°С and lower.


WARNING!


Do not place magnetic / metal objects inside the frame. Use only non-magnetic packaging for food and trays made of non-magnetic steel (e.g. AISI 304), plastic or aluminum.

 

7. SPECIFICATIONS



 

8. TROUBLESHOOTING


The Freezer performs a self-diagnostic test after switching on:



In case of problems, it shows mistakes:




WARNING!


All maintenance and service works must be performed after disconnecting AEF Freezer from Power Supply.


In case of problems, contact with a service organization recommended by the Manufacturer.

 

9. SERVICE AND MAINTENANCE


Operations Personnel should regularly perform:

  • products temperature check after finishing the freezing process;

  • visual control of products after finishing the freezing process;

  • check of water drainage system and the condensation water drainage tray;

  • cleaning, washing and disinfecting of internal surfaces of AEF FREEZER. After that, leave the door open overnight.


Technical maintenance personnel should once a month perform:

  • detect troubles in operation of freezer by interviewing operations personnel;

  • check correct placement and installation of freezer;

  • check self-closing mechanism of the door;

  • check connectors inside the freezing chamber and outside;

  • check current, integrity of wire isolation and cable;

  • check the ground circuit. Resistance of grounding clamp to accessed metal parts should not exceed 0.1 Ω

  • check grounding in the electric socket;

  • check integrity of the Cooling unit (refrigerant leakage);

  • if traces of oil in spots of pipe connections are detected, eliminate the leakage;

  • check circularity of cooling system, fan rotation, absence of ice coating on the evaporator.

Technical maintenance personnel should every six months perform cleansing of condenser and compressor from dust and mud. Access to the compartment by opening the door in the down side of the Freezer.


WARNING!


It is strictly prohibited: unauthorized opening of the AEF Module, measuring its physical parameters, reverse engineering. The AEF Module destroed after opening and can be restored to working condition only by a Manufacturer’s employee. The cost of such restoration is 5000 EURO plus travel and accommodation expenses for an AEF employee.


Only qualified personnel must perform installation, operation, and maintenance of AEF FREEZER.

 

10. TRANSPORTATION


AEF FREEZER should be transported and stored in vertical position only, under ambient temperature not less than +5°С.


AEF FREEZER should be placed on a pallet, in a package recommended by the Manufacturer, with the following logo on front, rear and side surfaces of the package:



AEF FREEZER can be transported by Railway, River, Auto, Air borne and Sea borne transport according to the Carriers’ rules.


Loading and handling of AEF FREEZER should be performed carefully using fork lifts, by qualified personnel.

 

11. WARRANTY AND TECHNICAL SUPPORT


The Warranty period for AEF FREEZER two years from the date of its delivery to a Customer, subject to the conditions and operating rules recommended by the Manufacturer.


During the warranty period, the Supplier undertakes to eliminate the identified defects of the freezer within 14 working days from the date of receipt of a written notice from a Customer (or compensate to a Customer the cost of repair).


During the warranty period, the manufacturer guarantees elimination of identified manufacturing defects and replacement of failed AEF FREEZER components, provided that the Buyer complied with the conditions of transportation, storage and operation of the product.


You can ask technical questions on the operation, maintenance and service of AEF equipment by contacting the technical support service, e-mail: info@aeftrade.eu

 

12. CERTIFICATION


The freezer with AEF Module is certified for sale in the European Union based on Declaration of Conformity (CE).


Used harmonized standards:

  • EN 61000-6-2:2005 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments;

  • EN 61000-6-4:2007/A1:2011 Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for industrial environments;

  • EN 61000-3-2:2014 Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase);

  • EN 61000-3-3:2013 Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current <= 16 A per phase and not subject to conditional connection;

  • EN 60204-1:2006 Safety of machinery — Electrical equipment of machines — Part 1: General requirements.

 

13. RECYCLING AND UTILIZATION


Recycling and utilization should be performed according to currently valid local legislation rules.


WARNING!


AEF FREEZER contains oil, refrigerant R452A, and electronic components. Take care of the Environment. Follow local utilization regulations.

 

14. CONTACTS

Acoustic Extra Freezing Oy,

c/o Terkko Health Hub,

Haartmaninkatu 4, 00290,

Helsinki, Finland.

tel. +358 923 161 061




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