01.02.2021 Cod. 80006550a - GB - VR
Read carefully and keep for future reference
DOC. 1 di 2 USER MANUAL
Tecto CI3
30.03.2020 Cod. 80005760 - GB
Dear customer,
Thank you very much for your choice!
We wish you a profitable and successful use with this refrigerating cabinet. Please read this manual carefully before using the unit. These instructions will provide you with all the necessary information to guarantee a safe, effective, and long-lasting use of this unit.
Read this manual carefully before using the unit
Please pay the greatest attention to the following instructions and guidelines, as well as to the pictograms and their meanings. The warnings included in this manual have been categorized as follows:
WARNING: information for the correct and effective use of the unit.
DANGER: notices relevant to potential hazards for people.
ATTENTION: notices related to potentially hazardous situations for objects and/or for the unit.
CAUTION!
Please consider the User Manual as an integral part of the unit.
The manual should be kept within reaching distance for both the use and maintenance personnel.
In case the unit is resold, make sure to provide the new owner with this manual.
Keep the Manual in good condition for the whole life of the unit.
Keep the manual in good condition; in the event that it is damaged or lost, ask the manufacturer for a new copy.
THANK YOU!
01.02.2021 Cod. 80006430a - GB
CONTENTS
1. For your safety 5
1.1 General provisions for the user 5
1.2 General provisions for the maintenance personnel 5
1.3 Residual hazard 6
2. General data and features 8
2.1 Description and technical features 8
2.2 Nomenclature 8
2.3 Cross sections 9
2.4 Front Views 10
2.5 Maximum load 11
2.6 Noisiness 11
2.7 Weight of the refrigerated cabinet 11
3. The rating plate 12
4. Transportation and handling 14
4.1 Transportation and handling 14
4.2 Reception and storage 14
5. Setting up the unit 15
5.1 Positioning the refrigerated cabinet 15
5.2 Unpacking 16
5.3 Feet/supports adjusting 16
5.4 Cleaning before starting 17
5.5 Electric connection and power up 17
6. Loading and using the unit 18
6.1 Preserving the displayed products 18
6.2 Provisions for loading the refrigerated cabinet 18
6.3 Temperature setting 19
6.4 Defrost 19
6.5 Correct use of the unit 19
6.6 Positioning the glass shelves 20
7. User’s maintenance 21
7.1 General recommendations 21
7.2 Scheduled maintenance calendar 21
7.3 Cleaning sliding glasses, front glass and glass shelves 22
7.4 Cleaning the acrylic glass parts 22
01.02.2021 Cod. 80006430a - GB
7.5 Cleaning the internal bottom surface of the casing 23
7.6 Cleaning the condenser 23
7.7 Cleaning the condenser with the removable filter 24
8. Dixell XR77CX control panel 25
8.1 Description 25
8.2 Switch the unit on and off 25
8.3 Normal conditions of operation 25
8.4 User interface 26
8.5 Set-point (working temperature) 27
8.6 Defrosting 27
8.7 Lights, switching on/off 27
8.8 Alarm warnings 28
8.9 Programming the controller 29
9. Wurm CRA control panel 30
9.1 Description 30
9.2 Switch the unit on and off 30
9.3 Normal conditions of operation 30
9.4 User interface 31
9.5 Set-point (working temperature) 32
9.6 Defrosting 32
9.7 Lights, switching on/off 32
9.8 Alarm warnings 33
9.9 Programming of the controller 34
10. Anomalies and remedies 35
10.1 Anomalies and remedies 35
11. Spare Parts and Warranty 37
11.1 Technical Support and Spare Parts 37
11.2 Warranty 37
11.3 EPREL database 37
12. Dismantling and disposal 38
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Units running with flammable refrigerant R290 (Propane)
The final user and the personnel in charge of maintenance and/or technical interventions should read and properly understand these instructions before using the unit.
1.1 General provisions for the user
The units running with R290 are identified by a specific tag applied on the base sidewall. The type and quantity of the refrigerant are given on the serial number plate of the unit.
Caution! Do not damage the refrigerating circuit.
Caution! Do not keep explosive substances (such as aerosol cans) with flammable propellant inside the unit.
Caution! Do not use mechanical devices or other systems to speed up the defrost process, unless they are recommended by the manufacturer.
Caution! Do not use electric appliances in the display area, unless they are recommended by the manufacturer.
Caution! Do not exceed the load limits of display decks and shelves, as given in the section “General Data and Features”.
Caution! Do not obstruct the ventilation openings along the external perimeter of the unit.
Caution! In case the cable or the plug are damaged, call the maintenance personnel for the replacement.
1.2 General provisions for the maintenance personnel
R290 refrigerant is a class A3 ANSI/ASHRAE gas. It is highly flammable and it ignites very easily. It can in- stantly burn with explosive effects.
The R290 refrigerant dispersed in air may lead to a fire risk or explosion in presence of free flame and/or sparks generated by electric devices.
Maintenance and servicing are exclusively reserved to qualified personnel with a professional certificate, is- sued by a certified body that certifies the following:
- the expertise to work on refrigerating circuits operating with R290 as a refrigerant.
- the expertise to handle safely type HC refrigerants (i.e. Hydrocarbon, to which R290 belongs) according to the EN13313:2011.
Maintenance shall be carried out considering the risks mentioned above: do not use electric tools and open flame.
Components which require replacement: use only original spare parts which are certified to operate in refrigera- tion circuits working with R290.
1. For your safety
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The refrigeration circuit is hermetically sealed; therefore, repairing interventions on the circuit are not possible without breaking the vacuum.
In the event that vacuum breaking is needed for carrying out maintenance operations, follow the following provi- sions:
• The operation can not take place inside the store or indoors.
• The unit must be moved to a suitable environment and guarantee the adequate safety. Work outdoors or alter- natively in a properly ventilated environment; in this case, the ventilation shall be able to disperse outside (in the atmosphere) any possible refrigerant losses.
During the installation, maintenance or dismantling operations, all the possible ignition sources (smoking includ- ed) must be strictly avoided.
If it is necessary to carry out welding or brazing operations or other operations which cause the generation of heat and high temperatures; strictly follow the requirements of this section. It is recommended that you do the follow- ing:
• Remove the refrigerant
• Flush the circuit with inert gas
• Evacuate
• Flush the circuit again with inert gas
• Open the circuit and carry out the maintenance
1.3 “Residual hazards”
Residual hazards are risks that remain even after all possible protection measures are taken in the design phase and the unit is fitted with additional protection guards. This information chapter is an integral part of the measures adopted by the designer to minimize residual hazards and it is meant for the store operators. Therefore, every operator must know the residual risks of the unit to prevent possible accidents.
General measures to reduce hazards:
• Implement the surveillance of the market and intervene in the case of non-compliant use by users (i.e. custom- ers).
• Manage the unit properly according to the provisions contained in this manual. Periodically check the integrity of the unit and its visible parts. In case of doubt, contact the assistance service.
• Wear adequate PPE while cleaning, maintaining and loading the goods (i.e. work clothes, protection gloves and glasses, safety shoes, helmet).
• Do not remove the protection and safety systems. Check for the integrity of all the plates and tags of the refrig- erating cabinet.
• Do not modify the refrigerated cabinet and make sure that original spare parts are used in the event of a tech- nical intervention.
1. For your safety
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Risks
Protruding and raised parts, edges.
In maintenance and loading phases, there may be a gen- eral hazard of bruising the hands and arms, head and legs. Wear suitable workwear and PPE.
Wet floor
In case of severe environmental conditions, the conden- sate water re-evaporation automatic system might not be able to discharge water completely so some water might overflow. Risks of a fall and bruising. Therefore, limit the area and dry it. If possible, restore the correct environ- mental conditions (see the chapter 5 titled
“Commissioning”).
Unsupervised children
Children have a reduced perception of danger. If they are not supervised, children might be at risk. Do not allow chil- dren to play or run near the refrigerating cabinet. Do not allow them to climb on, or hang from, the external struc- ture, or grab potentially dangerous parts (e.g. glass). Gen- eral risk of bruising on the hands and arms, head and legs. Intervene promptly and call for the attention of their supervising adults.
Access to the refrigerated cabinet
Do not climb on the cabinet. Overturning risk, risk of falls and bruising.
Maintenance operations
In the case of maintenance , limit the working area with special signals. Danger of falling in the sur-
rounding area of the refrigerating cabinet, danger of objects falling. Intervene in the case that these provisions are not followed.
1. For your safety
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2.1 Description and technical features ______________________________
Self-service refrigerated cabinet with forced air circulation and built-in condensing unit, suitable for the displaying and selling of pre-packed food such as salami and cold meat (in the GD version), milk and dairy products, deli, fruit and vegetables. Including endwalls, display decks in powder-coated galvanized steel, front 20 mm diameter bumper-rail in stainless steel, electronic control panel with safety circuit breaker as the main switch, evaporator with thermostatic expansion valve, automatic defrost, automatic system for the re-evaporation of the defrost water. Base in powder- coated galvanized steel equipped with adjustable feet. Foamed body, multiplexable with others on all sides. Available in the version with sliding doors (optional) and without condensing unit for the installation in remote plants.
2.2 Nomenclature _____________________________________________
2. General data and features
Tecto CI3...120
Tecto CI3...120 D
1 Front base panel 2 Electronic controller 3 Adjustable feet 4 Side bumper-rail 5 Endwall
6 Front bumper-rail 7 Control panel 8 Defrost water tank 9 Cable-wrap bracket 10 Condensing unit 11 Display deck
12 Evaporator 13 Fan panel 14 Insulated carcass 15 “Self Service” glass 16 Air intake
17 Sliding glass doors 18 Load limit mark 19 Back-side panel
20 Acrylic glass top canopy 21 Aluminium fascia 22 Glass shelf
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2.3 Cross sections ____________________________________________
2. General data and features
Tecto CI3...120 VD Tecto CI3...120 VD GD
Tecto CI3...120 Maxi Tecto CI3...120 Maxi GD
Tecto CI3...120 VC Tecto CI3...120 D
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2.4 Front views _______________________________________________
2. General data and features
Tecto CI3...120 VC-VD Tecto CI3...120 VD GD
Tecto CI3...120 Maxi Tecto CI3...120 Maxi GD
Tecto CI3...120 D
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2.5 Maximum load ____________________________________________
Maximum load accepted for the Tecto CI3 models is 90kg/m2 on the display decks, 40kg/m2 on the glass shelves and 20 kg/m2 on the acrylic glass top canopy, The load must be distributed evenly on the display deck.
2.6 Noisiness ________________________________________________
The noisiness of the refrigerated cabinet can vary according to the environmental conditions (temperature and humidi- ty in the store) and the cleanliness of the condenser. Our tests recorded a maximum noise level of 54 dB(A) at a dis- tance of 1 m from the cabinet.
2.7 Weight of the refrigerated cabinet ______________________________
The following table gives the weight of the refrigerated cabinet including endwalls and bumper, accessories not includ- ed. The standard version of packaging is considered i.e. pallets and protective film.
Weight without packaging (kg) Weight without packaging (kg)
Model \ Length mm 1250 1250
Tecto CI3...120 175 220
Tecto CI3...120...GD 195 240
Tecto CI3...120 D 210 235
90kg/m2 90kg/m2
20kg/m2
90kg/m2 90kg/m2 40kg/m2 40kg/m2
20kg/m2
2. General data and features
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3.1 The rating plate ____________________________________________
The rating plate is normally positioned near the electrical switchboard or in the tank for multideck or island versions.
The plate displays all the information to identify the unit as well as the technical specifications to install the unit proper- ly.
3. Rating plate
RoHS
The refrigerated cabinet is subject the WEE European Direc!ve 2002/96/EC (for plug-in refrigerated cabinets only)
The unit complies with the RoHS European Direc!ve 2002/95/EC (for plug-in refrigerated cabinets only) Please always provide this infor-
mation when a spare part is ordered.
Before performing the electrical connection, make sure that the unit fea- tures match the power supply network of the place where the unit is to be in- stalled.
1 2 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22 23
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Meaning of the rating plate fields
1 Model and length of the refrigerated cabinet
2 Serial number, code and/or configuration number (if any) 3 Year of manufacture
4
Climate class, it gives the proper environmental conditions in which the unit operates properly
3 – The unit is suitable for operating in an environmental temperature of 25° C and a relative humidity of 60%
4 – The unit is suitable for operating in an environmental temperature of 30° C and a relative humidity of 55%
5
Temperature class of the unit; it indicates the category of the products that can be preserved in the refrigerated cabinet:
L1: suitable for the preservation of frozen food or ice-cream
M0: suitable for the preservation of fresh products such as meat and poultry M1: suitable for the preservation of fresh products such as meat and poultry
M2: suitable for the preservation of fresh products such as salami and dairy products H: suitable for the preservation of fresh products such as fruit and vegetables S: suitable for the preservation of products with a special classification
6 Maximum power absorbed by the unit, with all required accessories installed, operating in the temperature class for which the units were built (given by the temperature class)
7 Power absorbed during defrost; includes the electric heater (if present) and all the other electric devices operat- ing during the defrost cycle, such as controllers, fan motors, lighting etc.
8 Rated supply voltage, number of phases and frequency to which the cabinet must operate.
9 Electrical power absorbed, rated voltage and current of other installed electric devices (if any).
10 Electrical power absorbed, rated voltage and current of the defrost heaters (if any) 11 Electrical power absorbed, rated voltage and current of the demisting heaters (if any)
13 Type and quantity of used refrigerant
14 It indicates the kind of lamination device. CT = capillary tube. TVX = thermostatic valve 15 Net volume of the additional refrigerant storage (if any)
16 Refrigerated display area available to display the goods
17 Maximum operating pressure inside the refrigeration circuit of the unit 18 Rated current absorbed by the unit in normal operating conditions
19 Rated current absorbed by the unit at the compressor starting phase (starting current) 20 Model of condensing unit or compressor installed
21 Electrical power absorbed, rated voltage and current of the lighting system (if any) 22 Electrical power absorbed, rated voltage and current of the fan motors (if any) 23 Electrical power absorbed, rated voltage and current of the condensing unit 12 ID name in the EPREL database
3. Rating plate
14 01.02.2021 Cod. 80005810 a- GB
4.1 Transportation and handling __________________________________
In order to be transported, the cabinet is delivered on a Europallet with standard dimensions (120 x 80 cm), and fixed by means of proper fixing plates. Unloading must be carried out by means of a forklift (see chapter “2.7 weight of cabi- net”), using the designated handling points indicated in the below picture. The available packaging are: Europallet with protective film (standard), Europallet with carton box (options), Europallet with wood crate (options). The types of packaging depends on the model of cabinet and on the client’s request.
We remind you that the use of forklift is exclusively allowed to authorized personnel who has been properly cer- tified as “forklift operator”. During unloading, placement and installation of the cabinets the use of proper protective equipment is required (protective gloves and eyeware, safety shoes).
Only when the cabinet is placed on the final point of installation inside the market, remove the protecting film and plates. For this operation refer to chapter “5.2 Unpacking”.
The packaging is composed by recyclable materials which shall be separated and disposed of in accordance with waste disposal regulation in force in the country where the disposal occurs.
4.2 Reception and storage ______________________________________
During the take-over of the cabinet from the conveyor, verify the packaging conditions. If there are evident damages, take a photograph of the damaged parts and sign with reservation the delivery documentation. Once the damage is checked promptly inform the conveyor, the insurance company and your supplier.
The cabinet shall be storaged in an indoor ambient with a temperature not exceeding 55 °C. Avoid the exposure of the cabinet to direct sunlight which could deform plastic materials, damage electrical components and make the removal of the protective film difficult.
4. Transportation and handling
Pallet and cardboard Pallet and protective film Pallet and protective film
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5.1 Positioning the refrigerated cabinet _____________________________
For unloading and handling the cabinet with a forklift, we recommend using the marked handling points as given in this manual.
We remind you that the use of forklift is exclusively allowed to authorized and properly trained personnel. Dur- ing the unloading, positioning and installing phases, the personnel should wear suitable personal protection equipment (i.e. protective gloves, glasses and reinforced shoes). Place the unit, still packed, in the final installation position in the store. Please see the sections below.
The cabinet cannot be used outdoors. Check the environmental conditions in which the unit will be installed and match the climate class given on the unit’s identification plate (i.e climate class 3, max room temperature of 25°
C, R.H. 60 %). Higher levels of temperature and/or relative humidity can cause higher energy consumptions and poor- er performances, consequently shortening the shelf-life of the displayed products.
Avoid the exposure of the cabinet to direct sunlight, don’t place the unit close to heat sources such as ov- ens, heating radiators, high-intensity lighting systems and any other heating source.
The unit should not be subject to air flows with a speed higher than 0.2 m/sec. It is highly recommended that the unit is positioned far from doors, windows and air conditioning grids.
Make sure there is a frequent change of air in the room where the unit is operating even when the store is closed.
The refrigerated cabinet base is designed to guarantee a proper ventilation of the condensing unit; therefore do not obstruct the air intakes by placing any type of materials along its external perimeter
To avoid the condensation formation keep a space of 5 cm from the thermopane back-side panel.
5. Setting up the unit
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5.2 Unpacking ______________________________________________________
The unit is delivered in a packaging made of a Europallet and a cardboard box (see Chapter 4 “Transportation and handling”). Once the cabinet is placed on the installation point, make sure that the packaging is integral and undam- aged. If there is any damage caused by transportation, take a photo of the damage and report it to the supplier.
Wear suitable PPE (i.e. protective gloves, glasses and safety shoes). Use strong scissors (i.e. electrician’s scis- sors or bolt cutters) to cut the strings. Remove the strings, lift the cardboard box and remove it.
Remove the plastic strings that fix the cardboard box to the wooden Europallet. Caution! The strings are tight- ened and, when they are cut, there can be a “whip effect” that can be hazardous. Proceed with caution and do not cut the strings while standing in front of them.
Packaging is mostly made of recyclable materials (wood and cardboard and small amounts of plastic film). Do not dispose of them in the environment! Please refer to the local regulations in force for the correct disposal of the materials and deliver them to a suitable disposal centre.
Remove the screws that fix the metallic brackets which block the feet and wheels (see images below). Now it is possible to remove the unit from the Europallet and place it on the floor.
5.3 Feet/supports adjusting __________________________________________
Before starting the unit for the first time, adjust the feet so that the unit is stable and perfectly horizontal. Lev- elling will guarantee the proper drainage of the defrost water as well as a noiseless and smooth operation of the unit.
Adjust the levelling feet (if any) and check the horizontal alignment by using a spirit level on the length and the width of the refrigerated cabinet.
5. Setting up the unit
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5.4 Cleaning before starting
Before connecting the unit to the power supply, remove the protective films and clean both the internal and external surfaces of the refrigerated cabinet, in particular the display decks. It is recommended that you use lukewarm water and neutral detergents (pH 6÷8).
Do not use hoses connected to the water system to clean the unit. Do not use direct or indirect water jets or pressurized cleaning machines (i.e. high pressure washers).
Do not use alcohol, abrasive pads or solvents to clean the unit. After cleaning, dry the parts immediately with a soft cotton cloth. For further details and information about cleaning, please see Chapter 7 “User’s maintenance”.
5.5 Electric connection and power up __________________________________
The power supply to which the cabinet is going to be connected must comply with the regulations in force in the country where the unit is installed. The frequency and voltage rating of the power supply must correspond with the values given on the identification plate of the refrigerated cabinet. Before switching on the unit, make sure that the voltage rating matches the one required and is within the allowed tolerance limits (±10%).
It is mandatory to ground the refrigerated cabinet. Efficient grounding is essential for safety.
Upstream of the socket, it is recommended to have the installation of an omni-polar power isolator switch, with air gap between the contacts of at least 3 mm. This measure is to be considered mandatory if the connected load ex- ceeds 1000W, or if the unit is connected directly to the power supply without using a plug (e.g. cabinet without con- densing unit and connected to an external refrigeration unit). The power isolator switch should be a magnetothermal switch with high sensitivity differential circuit breaker.
Do not use time-based devices to switch on-off. Do not connect the unit to cyclical on and off switching circuits.
Do not use extension cords, adaptors and multiple sockets. Do not bend, twist, stress or squeeze the cord and avoid it touches hot surfaces or sharp edges.
If the cable is damaged, ask the Technical Support or a qualified technician to replace it. Use an original spare part.
If the socket does not match the plug, ask a qualified technician for a replacement of the socket.
Before inserting the plug into the socket, make sure that the main power switch of the unit (magnetothermal switch) is in OFF position. Insert the plug into the socket and switch on the unit. If the unit is not used for a long time, switch off the power switch and pull out the plug.
5. Setting up the unit
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6.1 Preserving the displayed products _____________________________
The refrigerated cabinets are designed to guarantee the display of pre-cooled products. Products come from refrigerated places such as refrigerated warehouses or cold-rooms at a temperature as close as possible to the ideal one. The quality of the displayed product is strictly related to the “cold chain” which is maintained during the various passages in logistics. Products that are not properly pre-cooled and are positioned in the refrigerated cabinet decrease the unit performance and can also damage other displayed goods. Therefore, it is essential that goods are not kept, even temporarily, in non refrigerated places that may raise the product temperature. When the product is delivered, the supplier should place it immediately in a cold-room or in the refrigerated cabinet. Meat, in particular, must be kept in refrigerated rooms throughout the whole manufacturing process (sectioning, boning, slicing, packag- ing, etc). If the operations last more than 2 minutes, make sure that the meat is brought back to a cold room to re- establish the ideal temperature.
The working temperature of the refrigerated cabinet is displayed by the digital thermometer installed in the cabinet (usually it is close to the air-intake grill). The values given by the electronic controller or other devices (if any), cannot be considered as a reference of the temperature of the displayed product because the temperature probes are placed according to technical criteria that don’t directly give the preservation temperature.
6.2 Provisions for loading the refrigerated cabinet _______________________
For a proper and effective running of the unit, avoid the displayed products from obstructing the correct circula- tion of the refrigerated air. Furthermore, it is important to observe the load limit, indicated by the red line __▼__▼__ when stacking the products. The goods exceeding the load limit would not be properly refrigerated and air turbulence would be created with negative effects on unit performances (massive formation of frost inside the evaporator) and a deterioration of the displayed products’ preservation.
It is recommended not to place the product on the air-intake grills. This would reduce the refrigerated air- flow inside the cabinet, and consequently it would cause a rise in temperature.
6. Loading and using the cabinet
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6.3 Temperature setting ________________________________________
Setting-up working parameters: for adjusting the “set-point” temperature and the other parameters, see the in- structions of the control panel included in this manual. When setting up the set-point, make sure that the resulting tem- perature in the cabinet matches the temperature class of the cabinet and/or the displayed product. Setting up a tem- perature that is too low may obstruct the evaporator and create an excessive formation of frost.
6.4 Defrost __________________________________________________
The units are equipped with an automatic system for the cyclic defrost of the evaporator. This system is managed by the electronic controller of the control panel. Defrost parameters are pre-set at the factory according the needs of each unit. In particular cases, it may be necessary to manually start a defrost cycle by using the electronic controller (see the instructions about the electronic controller given in this manual). Manual defrost will have to be acti- vated whenever a loss or a reduction of air flow is detected at the air-discharge grill. This condition occurs when the evaporator is clogged by frost that prevents air from circulating properly. If there is massive or a rapidly developed for- mation of frost inside the evaporator that requires frequent manual defrost operations, it means that the environmental conditions where the unit is working are not suitable or that the goods are not properly positioned in the unit.
During closing time or holidays, it is recommended to use “night blinds” or “night covers”. This measure pro- vides a substantial reduction of energy consumption and a better preservation of the products.
6.5 Correct use of the unit_____________________________________________
The unit cannot be used by people, including children, whose physical, sensorial or mental capacities are im- paired, or by people who are not properly trained, unless they are supervised by a person responsible for their safety who has explained them the correct and safe use of the unit.
The unit is used in places open to public. Make sure children are supervised to avoid that they play with the unit.
It is striclty forbidden to use the unit, or part of it, improperly.
Avoid to overload display decks of the unit as well as its shelves and top canopy. Follow the loading limits given in this manual (see chapter 2 “General data and features”).
For units working with R290 as refrigerant, which is flammable, refer to the safety warnings given in the chap- ter “For your safety” at the beginning of this manual.
6. Loading and using the cabinet
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6.6 Positioning the glass shelves _________________________________
It is possible to tilt and/or lift the glass shelf by using shelves [1] and the rack holes [2].
To change the layout of the glass shelves proceed as follows:
• Remove the glass shelf [3] by lifting up and then extracting it from both sides (Fig. 1).
• Remove the shelves [1].
• To tilt the glass shelf, insert the shelf (Fig. 2) according to the following combinations:
• To lift up the glass shelf, insert the shelf (Fig.2) according to the following combinations:
• Reposition the glass shelf by positioning it on the shelves.
Combination AZ-AZ AY-AY AX-AX
Tilting 1 2 3
Combination AZ-AZ BZ-BZ AY-AY
Tilting 0° 8° 0°
BX-BX 8°
AX-AX 0°
BY-BY 8°
A B
B A
X Y Z
Fig.2 Fig.1
3
1
2 X
Y Z
6. Loading and using the cabinet
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7.1 General recommendations ___________________________________
This chapter is dedicated to maintenance which can be carried out by the personnel of the store where the unit is installed. Only cleaning operations as given in this chapter can be carried out by the store personnel.
Warning! Technical maintenance and technical interventions on the unit must be carried out only by qualified and authorized personnel (i.e. refrigeration technicians, electricians, etc.).
Before performing any maintenance operations, switch off the unit by means of the unit’s main switch and dis- connect it from the main power supply line by using the disconnecting switch which is upstream of the power line. Fi- nally, disconnect the plug from the electrical outlet.
Before carrying out any interventions, wear the proper protection equipment (safety shoes, protective gloves and glasses).
Please refer to chapter “5.4 Cleaning before starting up the unit” for further information about cleaning. In particu- lar, follow the instructions relevant to methods and substances for cleaning.
7.2 Scheduled maintenance calendar ______________________________
The proper maintenance will guarantee the optimal functioning of the refrigerated cabinet and consequently a reduc- tion of energy consumption and longer life for the unit. Therefore, it is essential to carry out the checks given in the following table to guarantee the safety of both the unit and the users.
7. User’s Maintenance
Frequency Day Month Year
Operations 1 7 15 1 3 6 1 2 3
Visual check of the unit and adhesive plates
Visual check for water leakages
Cleaning glasses and acrylic glasses
Cleaning external surfaces (panels, frame, base, bumpers)
Cleaning acrylic glass intake air baffles
Cleaning the display deck
Cleaning the insulated casing (under the display deck)
Cleaning the condenser filter (if any)
Defrost the cabinet completely
Cleaning the condenser
Cleaning the inner side of the casing (evaporator included)
Cleaning the discharge grill inside the casing
Checking the water discharge system
Checking re-evaporation sponges of condensation water
Check the correct positioning of re-evaporation sponges.
Check the electrical system
Check the refrigerating system, functioning and performance
= Ordinary cleaning, operation to be performed by personnel of the store
= Extraordinary maintenance, operation to be performed by qualified personnel
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7.3 Cleaning sliding glasses, front glass and glass shelves. ______________
Use a soft and non-abrasive cloth with neutral de- tergents (pH 6÷8) for cleaning and a soft and dry cloth for drying. Do not use abrasive products or metal scrapers that may scratch the glass. Do not use corrosive deter- gents, thinners, alcohol or solvent swhich can damage the plastic seals and the painted parts of the frame.
Do not use hot water on cold glass as it can break and be dangerous for the operator.
To remove the sliding glass:
• Slightly lift up the upper glass [1] from the side which is not bound by the plastic guide, remove the glass from the slot, paying attention not to drop it.
• Lift up the lower glass [2].
• For refrigerated cabinets without sliding glass, it is possible to extract front glass [3]. Remove the glass stopper screw [4], if any. Extract the glass from the frame profile by lifting it up from both sides.
• Reassemble the parts by following the operations in the reverse order.
7.4 Cleaning the acrylic glass parts ______________________________
Use soft microfiber or cotton cloth soaked with lukewarm water (max. 35° C). If there are halos, add some neutral diluted detergent (pH 6÷8). Rinse and dry with a soft and dry cloth. Use a specific product for the stainless steel display deck. Do not use corrosive deter- gents, thinners, alcohol or solvents.
For cleaning completely the acrylic glass parts:
• Remove the anti-demisting acrylic glass [1], if any, by unhooking the front part of air outlet baffle. After that, the anti-demisting acrylic glass returns to its original flat shape. It shall be curved when it is re- positioned.
4 1 2
2 1
3
5
1
7. User’s Maintenance
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• Remove the air outlet baffle [2].
• Extract the central assy air intake baffle [3] togeth- er with the top canopy [4].
• Clean the removed components and the side- walls [5].
• Follow the operations in the reverse order to reas- semble the components.
7.5 Cleaning the internal bottom surface of the casing ________________
Use soft microfiber or cotton cloth soaked with lukewarm water (max. 35° C). If there are halos, add some neutral diluted detergent (pH 6÷8). Rinse and dry with a soft and dry cloth. Use a specific product for the stainless steel display deck. Do not use corrosive deter- gents, thinners, alcohol or solvents.
Do not use hoses connected to the water system to wash the unit. Do not use direct or indirect water jets or machines for pressure cleaning (i.e. high pressure washers).
• Remove the display decks [1] then the sheet under the display deck [3] by using the supplied tool [2].
• Vacuum any residue in the carcass.
• Clean the air grills [4], the evaporator cover [5], the fan holders [6] and the insulated casing [7], paying attention not to wet the electrical parts.
• Follow the operations in the reverse order to reas- semble the components.
7.6 Cleaning the condenser ____________________________________
Use a brush with hard bristles and a vacuum cleaner.
The aluminium fins of the condenser can cause injuries to the hands and arms; use protective gloves for cleaning these parts.
1
2 1
1 1
3 3
3 3
2
4 5
6
7 2
3 4
5
7. User’s Maintenance
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• Unscrew the side knobs [1].
• Slightly rotate the panel [2], lift it up to remove it from the slots in the upper parts of the frame. Re- move the panel.
• Use a brush with hard bristles and a vacuum cleaner, clean the dust and any other dirt residue in the aluminium fins of the condenser [3].
• Follow the operations in the reverse order to reas- semble the components.
7.7 Cleaning condenser with removable filter _______________________
The aluminium fins of the condenser can cause injuries to hands and arms, use protective gloves for cleaning these parts.
For the filter removal, perform the following steps:
• Open the panel [1] by inserting the supplied tool [2]
into the hole on the upper front side of the panel.
• Remove the filter [3] from the guides on the panel [1].
• Use a vacuum cleaner to remove dust or any other dirt in the filter [3].
• Wash the filter [3] with running water and dry with soft cloth.
• Remove dust between the condenser fins [4], giv- en in the previous section.
• Follow the operations in the reverse order to reas- semble the parts.
• Close the panel which is locked by magnets.
3 1
1 2
1
2 2
3
4 3
7. User’s Maintenance
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8. Dixell XR77CX control panel
8.1 Description _______________________________________________
The following instructions refer to a refrigerated cabinet with built-in condensing unit and DIXELL mod. XR77CX elec- tronic controller.
This microprocessor based controller is equipped with an LED display designed for the management of refrigerating units, display cabinets and showcases. The LED display contains 3 digits and a decimal point for reading both temper- atures and parameter codes easily. The display contains a set of luminous icons that intuitively represent the status of the unit. The controller is equipped with a 6-button keypad which activates/deactivates the main functions and stores/
modifies the working parameters.
8.2 Switch the unit on and off
To switch on the refrigerated cabinet and enable its functions, turn on the main magnetothermal switch from the con- trol panel. When the unit is on, the display will show all icons and the 3-digit panel for few seconds. To switch off the unit, move the lever to “OFF”.
Attention: In some models, the compressor starts a few minutes after the unit is switched on.
8.3 Normal conditions of operation ________________________________
When the refrigerated cabinet is switched on, the controller will automatically manage the functioning of the condens- ing unit to reach and keep the SET-POINT temperature. The set-point temperature is set at the factory as an average value but it might be necessary to change this value to make the temperature more suitable to displayed products (please refer to the information given in the product label). For the modification of the set point, refer to the following chapter of this manual.
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8. Dixell XR77CX control panel
Attention: The cabinet is equipped with a digital thermometer positioned inside the display area, usually close to the front glass. The displayed temperature corresponds to the temperature in the refrigerated cabinet; there- fore refer to this value for preserving the goods properly. The temperature displayed by the controller corre- sponds to the set point value. For technical reasons, the temperature values provided by the two displays (i.e. ther- mometer in the refrigerated cabinet and controller display), even if related to one another, could be different and vary during the cabinet’s operation. This fact is not an anomaly or a technical fault. To modify the working temperature, it is necessary to consider the temperature displayed by the digital thermometer inside the refrigerated cabinet, and then increase/decrease to the set point value memorized by the controller.
8.4 User interface
1
2
3
4
5
6
Pos. Keys
2 /
3 SET
4 5 6
1 AUX
Function To switch on and off the lighting (if any) To start manual defrost
To display or modify the set point
UP arrow— to increase the set point value DOWN arrow— to decrease the set point value Stand-by of the cabinet (function disabled)
LED MODE
Flashing ON Flashing
ON ON ON
Function Compressor enabled
Compressor in waiting mode (delayed start) Defrost in progress
Dripping phase in progress Temperature alarm
Continuous cycle running
°C ON Measurement unit of temperature
°C Flashing Programming phase (for maintenance technicians only)
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8. Dixell XR77CX control panel
8.5 Set-Point (working temperature)
The electronic controller automatically manages the working temperature inside the cabinet, according to the set value, as well as the defrost cycles.
How to display the current set point
To display the current set point value, push and release the SET key. To display the sensor value again, push and release the SET key or wait 10 seconds for the automatic reset of the display.
How to change the current set point:
• Push the SET key for more than 2 seconds
• The value of the set point will be displayed and the “°C” symbol starts blinking
• To change the set value, push the UP or DOWN arrows within 10 seconds
• To memorize the new set point value, push the SET key or wait for 10 seconds
8.6 Defrosting
The controller is programmed at the factory to perform a given number of defrost cycles in 24 hours. The du- ration of defrost cycles can vary, and it depends on the temperature detected by a specific sensor positioned inside the evaporator (defrost sensor). This sensor enables the end of the defrost, unless the maximum safety duration time (i.e. time-out) is reached.
Manual defrosting
If it is necessary to activate a manual defrosting cycle, push the indicated key for more than 2 seconds. The defrost cycle will take place according to the criteria mentioned above (once it has reached the end defrost temperature de- tected by the defrost sensor or the time-out). The display will show the “DEF” (defrost).
8.7 Lights, switching on/off
If installed, the optional LED lighting is operated by the keyboard of the electronic controller, by pressing the AUX key.
The “Switch-On status” is also confirmed by the message “AUX” on the display and memorized by the controller itself.
This status remains stored and active also in the case of unintentional switching-off of the cabinet or temporary black- out. At the restart of the unit, or once the power has been restored after a blackout, the lighting system will be auto- matically powered.
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8. Dixell XR77CX control panel
8.8 Alarm warnings
In case of an anomaly, the microprocessor will activate an alarm and the display will show the corresponding warning codes which identify the cause. All alarm warnings will automatically stop as soon as the normal conditions of opera- tions are restored.
Warnings “P1” - ”P2” - ”P3” - “P4”
Call Technical Support and have the technicians check the probe connections and replace them if it is necessary. If the probe is broken, the refrigerated cabinet might not be able to maintain the proper temperature suitable for preserv- ing the displayed products. Check the temperature with the digital thermometer in the refrigerated cabinet. Remove the products and store them in a suitable refrigerated place (i.e. cold-rooms, another refrigerated cabinet) if it is neces- sary.
Warning “HA”
This warning indicates a high temperature for preserving the displayed products. Check the temperature with the digi- tal thermometer (it is inside the refrigerated cabinet) and the loading conditions of the displayed products (refer to Chapter 6 “Loading and using the cabinet). Remove the products and store them in an suitable refrigerated place (i.e.
cold-rooms, another refrigerated cabinet) if it is necessary
Warning “HA2”
If the refrigerated cabinet is equipped with the “SCE” (efficient condenser system), there is an additional probe for the measurements of the condensation temperature. The warning indicates a reduced efficiency of the unit caused by the accumulation of dirt on the front surface of the condenser. Clean the condenser as described chapter “7 User’s maintenance”. If the warning remains, even after the cleaning operation, call for Technical Support.
A dirty condenser causes higher energy consumption and stresses the compressor resulting in a decrease of duration of the compressor. Check the condenser periodically and clean it as given in the Scheduled maintenance calendar in chapter “7 User’s Maintenance”.
This type of warning, in addition to the normal displayed messages, activates an intermittent sound signal. All alarm warnings will automatically stop as soon as the normal conditions are restored (i.e. clean condenser).
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8. Dixell XR77CX control panel
8.9 Programming the controller
Attention! This section of the manual is meant for maintenance technicians only.
Access to the programming menus and the modification of the parameters are exclusively reserved for installa- tion and maintenance personnel. Incorrect or improper modifications of the parameters can cause malfunctions and/or a poor performance of the unit.
Parameter categories and access to the menus
Working parameters are grouped in two different categories:
Type “PR1” parameter: parameters of 1st level, related to the normal operating conditions.
Type “PR2” parameter: parameters of 2nd level, related to the system configuration.
Access and setting type “PR1” parameters
• Enter the programming mode by pressing the SET + DOWN ARROW for 3 seconds. The “°C” LED starts blink- ing.
• Select the required parameters by scrolling the Pr1 parameter list using ARROWS (UP/DOWN).
• Press the SET key to display the parameter value.
• Use the ARROWS (UP/DOWN) to change the parameter value.
• To exit the programming mode, press SET + UP ARROW, or wait for 15 second without pressing any keys to save automatically the new value.
Access and setting type “PR2” parameters
• Enter the programming mode by pressing the SET + DOWN ARROW for 3 seconds. The “°C” LED starts blink- ing.
• When the first parameter is displayed, release the keys, then push them again for more than 7 seconds. The
“PR2” message will be displayed immediately followed by the “Hy” parameter. The complete list of parameters (“PR1” and “PR2”) is now accessible and modifiable.
• Select the required parameter, scrolling through the list with the ARROW (UP/DOWN), and press the SET key to display the value.
• Use the ARROW (UP/DOWN) keys to change the parameter value.
• To exit the programming mode, press SET + ARROW UP, or wait for 15 seconds without pressing any keys to automatically save the new value.
In case of a power black-out before saving the new value, the change won’t be saved.
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9.1 Description _______________________________________________
The following use instructions refer to the cabinet case with built-in condensing unit which has a control panel equipped with an electronic controller WURM model CRA.
This microprocessor based controller is equipped with an LED display designed for the management of refrigerating units, display cabinets and showcases. The LED display contains 3 digits and a decimal point for reading both temper- atures and parameter codes easily. The display contains a set of luminous icons that intuitively represent the status of the unit. The controller is equipped with a 4-button keypad which activates/deactivates the main functions and stores/
modifies the working parameters. The main isolator switch switches the unit off and on.
9.2 Switch the unit off and on__________________________________________
To switch on the cabinet and enable its functions, turn on the main magnetothermal switch. When it is switched on, the controller LED display will light up. To switch the unit off, move the lever to “OFF”.
Attention: In some models, the compressor starts a few minutes after the unit is switched on.
9.3 Normal conditions of operation____________________________________
When the refrigerated cabinet is switched on, the controller will automatically manage the functioning of the condens- ing unit to reach and keep the SET-POINT temperature. The set-point temperature is set at the factory as an average value but it might be necessary to change this value to make the temperature more suitable to displayed products (please refer to the information given in the product label). For the modification of the set point, refer to the following chapter of this manual.
9. Wurm CRA control panel
Models 70-90-120 Models 50
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Attention: The cabinet is equipped with a digital thermometer positioned inside the display area, usually close to the front glass. The displayed temperature corresponds to the temperature in the refrigerated cabinet; there- fore refer to this value for preserving the goods properly. The temperature displayed by the controller corre- sponds to the set point value. For technical reasons, the temperature values provided by the two displays (i.e. ther- mometer in the refrigerated cabinet and controller display), even if related to one another, could be different and vary during the cabinet’s operation. This fact is not an anomaly or a technical fault. To modify the working temperature, it is necessary to consider the temperature displayed by the digital thermometer inside the refrigerated cabinet, and then increase/decrease to the set point value memorized by the controller. Wait a few minutes after the modification of the parameter before checking the working temperature of the unit. If it is necessary, repeat the operation, until achieving the desired temperature.
9.4 User interface ___________________________________________________
Each key (1) has a two functions. Briefly press a key to activate the base function. Keep the key pressed for 4 sec- onds to activate the function relevant to the “4 seconds” mode.
The buttons
The symbols
Pos. Function
1 Touch type keys to activate both the base and “4 second” functions 2 Symbols of compressor, defrosting, fan*, HACCP*
3 Symbols of energy saving mode*, maintenance*
4 Symbols of unit of measure (°C/°F), AUX, Stand by 5 7-segment display (display numbers and letters)
Key Base function “4 seconds” function
Display the Set-point Exit and save set data
Reserved to maintenance
Switch on/off lights (if applicable) Switch on/off the unit
Set a lower value
Set a higher value (hold the key to scroll fast) Activation of manual defrost
Symbol Meaning
ON: Compressor enabled
Flashing: displays the current set-point
ON: defrost enabled or dripping time in progress Flashing: defrost activation waiting (defrost delay func- tion activated)
Evaporator fan: Display not activated
Note: the fan activation is not managed by the controller
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Energy saving mode: Display not active Note: function not active
Maintenance: reserved
Switching on or blinking during the maintenance operations by technicians.
°C Unit of measure set: Celsius degrees
AUX Cabinet lighting (if any): activated On/Standby
On: the cabinet is in stand-by mode (functions disabled)
9.5 Set-Point (operating temperature) ______________________________
The electronic controller automatically manages the working temperature inside the refrigerated cabinet, accord- ing to the set value, as well as the defrost cycles.
How to display and modify the current set point
• Briefly push the key. The display will show the set temperature.
• The displaying status will be confirmed by the flashing symbol.
• Modify the set value by using and keys.
• To save and end the procedure, push the key or wait for 15 seconds.
9.6 Defrosting ______________________________________________________
The controller is programmed at the factory to perform a given number of automatic defrost cycles in 24 hours.
The duration of the defrost cycle can vary and it depends on the temperature detected by a specific sensor placed inside the evaporator (i.e. the defrost sensor). This sensor determines the end of the defrost, unless the maximum preset time is reached (time-out).
Manual defrosting
If it is necessary to activate a manual defrosting cycle, push the indicated key for more than 2 seconds. The defrost cycle will take place automatically according to the criteria mentioned above (once the end defrost temperature detect- ed by the defrost sensor is reached or time-out is reached).
• To activate a manual defrosting cycle, push the key for more than 4 seconds.
• Led On: defrosting cycle has been activated.
• flashing: defrosting cycle waiting for activation due to a delay function activated. Wait a few minutes.
9.7 Lights, switching on/off ___________________________________________
Press the AUX key briefly. The controller will make the LED lighting switch on (if the unit fits lightning). The “Switch-On status” is confirmed by the “AUX” symbol on the display and memorized by the controller. This status remains set and activated even if the refrigerated cabinet is unintentionally switched off or a temporary blackout occurs. In that case, once power supply has been restored after the blackout, the lighting system will automatically go back on again.
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9.8 Alarm warnings _________________________________________________
In case of an anomaly, the microprocessor activates an alarm and the display shows the corresponding warning code that identifies the cause. The symbol illuminates on the display to indicate an alarm condition.
Warnings “PR1” - “PR2” - “PR3” These warnings indicate a possible failure of the temperature probes installed in- side the refrigerated cabinet.
Call Technical Support and have the technicians check the probe connections and replace them if it is necessary. If the probe is broken, the refrigerated cabinet might not be able to maintain the proper temperature suitable for preserv- ing the displayed products. Check the temperature with the digital thermometer in the refrigerated cabinet. Remove the products and store them in an suitable refrigerated place (i.e. cold-rooms, another refrigerated cabinet) if it is nec- essary.
Warning“AH”
This warning indicates high temperature for preserving the displayed products. Check the temperature with the digital thermometer (it is inside the refrigerated cabinet) and the loading conditions of the displayed products (refer to Chap- ter 6 “Loading and using the cabinet). Remove the products and store them in an suitable refrigerated place (i.e. cold- rooms, another refrigerated cabinet) if it is necessary.
Warning “COH” or “CSd”
The refrigerated cabinet can be equipped with an additional temperature probe for measuring the condensation tem- perature. These alarms indicate a reduced efficiency of the unit that is usually caused by the accumulation of dirt on the front surface of the condenser. Clean the condenser as described in chapter 7 “User’s maintenance”. If the er- ror continues call for the Technical Support.
A dirty condenser causes higher energy consumption and stresses the compressor resulting in a decrease of duration of the compressor.
9. Wurm CRA control panel
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9.9 Programming the controller
Attention! This section of the manual is meant for maintenance technicians only.
Access to the programming menus and the modification of the parameters are exclusively reserved to installation and maintenance personnel. Incorrect or improper modifications of the parameters can cause malfunctions and/or poor performances of the unit.
Displaying and setting the parameters
The parameter displaying mode is activated by the “4 seconds” function of key. To enter this mode, you need a password which is set at the factory (password: -19). Push the key for 4 seconds and the message
“PA” will be shown on the display. Push the key again and enter the password by using the and
keys.
To confirm the password, push the key or wait for 15 seconds without pressing any keys. Now the first pa- rameter of the list (SP) will be displayed and the led will start flashing to confirm the access to the setting param- eter mode.
Choose the parameter to modify by using and keys.
Visualize the current value of the parameter by pushing the key.
Set the parameter value by using the and keys.
To save the new value, push the key or wait for 15 seconds without pressing any keys.
To exit the procedure without saving the new value, push the key.
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10. Anomalies and Remedies
10.1 Anomalies and remedies ____________________________________
Before calling Technical Support, see the following table to check if the problem can be solved.
Anomalies Causes Remedies
The refrigerated cabinet does not switch on.
The controller display is off.
The refrigerated cabinet plug is not connected properly to the power supply socket. No electric
Connect the plug to the socket properly. Check the general power supply board of the store.
The magnetothermal switch is “off”. Turn on the switch.
Intervention of the magnetothermal isolator switch.
Reset the isolator switch. If the problem isn’t solved, turn off the refrigerated cabinet and call
Lighting does not turn on.
(if any)
Controller command not activated. Activate the LED lighting switch. See chapter “8.7 Lighting on/off switching”
The LED wire plug is not connected properly to the LED bar.
Check the connection between the plug and the LED bar.
The refrigerated cabinet plug is not connected properly to the power supply socket. No electric energy available in the store.
Connect the plug to the socket properly. Check the general power supply board of the store.
The magnetothermal switch is “off”. Turn on the switch.
Intervention of the magnetothermal isolator switch.
Reset the isolator switch. If the problem isn’t solved, turn off the refrigerated cabinet and call
The refrigerated cabinet does not refrigerate properly.
The display deck is fro- zen.
The evaporator is frozen.
The display of the con- trollers Dixell XR50CX and XR77CX show “HA”
warning.
Wurm CRA controller display shows “AH” warn- ing.
Products not loaded correctly. Refrigerated air grills obstructed.
Re-arrange the products. Remove the obstacles from the refrigerate air grills. Refer to chapter 6
Acrylic glass air baffles of air intake and air out-
let are installed incorrectly or are inverted. Reposition correctly the air baffles.
The environmental conditions of the store are
not suitable. See the section “5.1 Positioning the cabinet”.
The controller temperature is set incorrectly. Set the proper temperature according to the dis- played product. See chapter “8.5 Set-Point
Unsuitable ventilation in the condensing unit. Remove the obstacles along the external perime- ter of the base. Make reference to “5.1 Positioning
Obstructed or dirty condenser.
Clean the condenser. See “7.6 and 7.7 Cleaning the condenser”. If the problem continues, switch off the refrigerated cabinet and call Technical Sup- port.
Evaporator obstructed by ice (ice or frost under the display deck).
Activate manual defrosting. See “8.6 Defrosting”.
If the problem continues, switch off the refrigerat- ed cabinet and call Technical Support..
