TEFCOLD BLC10 Blast Chiller Freezer User Manual

TEFCOLD BLC10 Blast Chiller Freezer

Product Information

The Blast Chiller/Freezer is a versatile appliance designed to rapidly cool or freeze food items. It is equipped with a flammable refrigerant and requires good ventilation for safe operation. The cabinet comes with adjustable legs for easy installation and leveling. The electrical connection should be done by a skilled electrician, and the cabinet should be connected to a separate electrical group to avoid overload.

Important Safety Instructions

• Ensure good ventilation around the appliance due to the presence of flammable refrigerant.
• Do not use mechanical devices for defrosting to prevent leakage of the cooling system.
• Avoid using electrical appliances inside the refrigerated storage compartment.
• Any repairs should be carried out by a skilled technician.
• Observe all earthing requirements and consult a local supplier or authorized electrician if in doubt.

Unpacking and Installation

1. Remove the wooden pallet and packaging materials.
2. Remove the protective foil from external surfaces before installation.
3. Ensure the cabinet is level and adjust the legs if necessary.
4. Do not block the ventilation holes and maintain at least 15 cm of free space between the cabinet and the wall.

Electrical Connection

• BLC3, BLC5, and BLC10 cabinets operate on 230 V/50 Hz.
• BLC14 operates on 3×400 V/50 Hz.
• Connect the cabinet to a separate electrical group to avoid overload.
• Ensure compliance with all earthing requirements set by local electricity authorities.
• Contact a skilled electrician for the main electrical connections.

IMPORTANT SAFETY INSTRUCTIONS

1. To obtain full use of the cabinet, we recommend reading this instruction manual.
2. It is the user’s responsibility to operate the appliance in accordance with the instructions given.
3. Contact your dealer immediately in case of any malfunctions.
4. Place the cabinet in a dry and ventilated place.
5. Keep the cabinet away from strongly heat-emitting sources and do not expose it to direct sunlight.
6. Always keep in mind that all electrical devices are sources of potential danger.
7. Do not store inflammable material such as thinner, gasoline etc. in the cabinet.
8. We declare that no asbestos nor any CFC are used in the construction.
9. The oil in the compressor does not contain PCB

ONLY FOR APPLIANCES WITH REFRIGERANT R290/R600a!
This appliance contains a flammable refrigerant, so make sure of good ventilation around the appliance. Do not use mechanical devices when defrosting, this can cause leakage of the cooling system. Do not use electrical appliances inside the refrigerated storage compartment. Any repair of the appliance should be carried out by a skilled technician (EN 60335-2- 89: 2010).

UNPACKING AND INSTALLATION

Remove the wooden pallet and the packing. External surfaces are supplied with a protection foil, which must be removed before installation. To ensure correct function it is important that the cabinet is level. If the cabinet is supplied with legs, these can be adjusted.

Important !

1. Do not block the ventilation holes.
2. Make sure that there is at least 15 cm. free space between the cabinet and the wall.

ELECTRICAL CONNECTION

• BLC3, BLC5 and BLC10 cabinets operates on 230 V/50 Hz.
• BLC14 operates on 3×400 V/50 Hz.
• Make sure that the cabinet is connected to a separate electrical group to avoid overload.
• The wall socket should be easily accessible.
• All earthing requirements stipulated by the local electricity authorities must be observed. The cabinet plug and wall socket should then give correct earthing. If in doubt, contact your local supplier or authorized electrician.
• The main electrical connections must be done by skilled electricians.

START-UP OF THE CABINET

Before use, we recommend that the cabinet is cleaned, see the section on maintenance and cleaning.

Important! If the cabinet has been horizontally placed during transport, please wait 2 hours before starting up the cabinet.

CAPACITY

• BLC3 BLAST CHILLER/FREEZER
  Model suitable to contain 3 trays with blast chilling capacity of 12kg and 8 kg in shock freezing.

• BLC5 BLAST CHILLER/FREEZER
  Model suitable to contain 5 trays with blast chilling capacity of 18kg and 14kg in shock freezing.

• BLC10 BLAST CHILLER/FREEZER
  Model suitable to contain 10 trays with blast chilling capacity of 40kg and 28 kg in shock freezing.

• BLC14 BLAST CHILLER/FREEZER
  Model suitable to contain 14 trays with blast chilling capacity of 55kg and 38kg in shock freezing.

RECOMMENDATIONS FOR USE

If the appliance remains inactive for a long period, proceed as follows

1. Use the automatic isolating switch to deactivate connection to the main electrical line.
2. Clean the appliance and surrounding areas thoroughly.
3. Spread a thin layer of cooking oil onto the stainless steel surfaces
4. Carry out all maintenance operations
5. Leave the door ajar to prevent the formation of mould and / or unpleasant odour.

Do not insert foodstuffs that are above the temperature of 90 °C. Do not stack the materials to be preserved in contact with the internal walls so blocking the circulation of air. There must be a sufficient space between the trays used in order to guarantee a sufficient flow of cold air on the entire product.

Never obstruct the inlet of the evaporator fans. Products that are more difficult to chill because of their size should be placed in the centre. Limit the number of times and the duration of time the door are opened. After blast chilling/shock freezing the product, it can be stored in a preservation cabinet after having been duly protected .A tag should be applied describing the contents of the product, blast chilling/ shock freezing date and expiry date. When the product has been blast chilled it must be preserved at a constant temperature of +2 °C while if it has been shock frozen it must be preserved at a constant temperature of -20 °C. The chiller should be used for storage for short periods only. To prevent bacterial contamination or contamination of any other biological nature, the needle probe must be disinfected after use.
BLAST CHILLING CYCLE
With this operating modality the chiller keeps the temperature of the refrigerating compartment close to zero during the entire chilling process in order to ensure a gradual drop in the temperature of the product to +3 °C.In this way, ice crystals do not form on the surface of the product .This blast chilling method should be used preferably for products that are not packed and whose physical/organoleptic characteristics could be damaged by the formation of superficial ice (e.g. fish)
SHOCK FREEZING CYCLE
With this blast chilling modality the blast chiller maintains the temperature at a negative value below -18 °C which is the end temperature of shock freezing .For shock freezing to be successful and fast, food should be in small pieces, especially if it has a high fat content. The largest pieces should be placed in central trays .If it takes longer than standard time to shock freeze and the sizes cannot be reduced, decrease the quantity and precool the chiller compartment by starting an empty shock freezing cycle before shock freezing the product.

CLEANING AND MAINTENANCE

Switch off the electrical connection at the socket. The cabinet must be periodically cleaned. Clean the external and internal surfaces of the cabinet with a light soap solution and subsequently wipe dry. External surfaces can be maintained using steel oil. Do not spray the appliance with direct jets of water or using high pressure appliances. Do not use iron wool. brushes or scrapers to clean the stainless steel as ferrous particles could be deposited which ,on oxidizing, could lead to rust. To remove hardened residues, use wooden or plastic spatulas or abrasive rubber pads.
Clean the condenser
Clean the condenser periodically. As the fins of the condenser are very sharp, always wear protective gloves for the next phases. Use protective masks and glasses in the presence of dust. Whenever the condenser has a deposit of dust in correspondence with the fins, this can be removed using a suction device or with a brush applied, using a vertical movement along the direction of the fins. No other instruments must be used, which may deform the fins and therefore the efficiency of the appliance.

To clean, proceed as follows:

1. Open the door (A) of the appliances.
2. Remove the lower panel(B) from the technical compartment: to do this, remove the screw fasteners(C)
3. It is now possible to clean the finned part of the condenser (D) using suitable tools and protection devices.
4. After cleaning, close the control panel and fix it with the screws removed beforehand.

SERVICE
The cooling system is a hermetically sealed system and does not require supervision, only cleaning. If the cabinet fails to cool, check if the reason is a power cut. If you cannot locate the reason to the failure of the cabinet, please contact your supplier. Please inform model and serial number of the cabinet. You can find this information on the rating label which  is placed inside the cabinet in the top right hand side.
DISPOSAL
Disposal of the cabinet must take place in an environmentally correct way. Please note existing regulation on disposal. There may be special requirements and conditions which must be observed.

For the daily use

How to select a cycle

Push the to move among the cycles CY1 , CY2 , CY3 , CY4 and the holding cycle H.

The 5 programs have the default values shown in the diagrams next page.

1. CY1: Fast chilling and conservation. (Hard + soft chilling and holding)
2. CY2: Chilling and fast freezing. (Hard + soft chilling, freezing and holding)
3. CY3: Fast freezing. (Fast freezing and holding)
4. CY4: Fast freezing with alarm and stop. (Only fast freezing)
5. H: Hold mode function. (Hard chill or freezing)
6. dEF: For starting a manual defrost.

How to display the holding SET point.
While the Holding cycle is running (H-icon lighted), push the key. The Holding set point is displayed on the upper display and the SETH labels is displayed on the bottom display.
How to modify the holding SET point.
While the SETH is displayed, hold the key pressed until the SETH label starts flashing. Use the arrow keys to modify the value and press the key to confirm. To confirm and exit, push the key again. How to start a cycle.
Push the key and the selected cycle starts. The yellow display is switched on. The compressor is delayed by 3 min.
How to pause a cycle.
Push the key and the compressor and fan will stop. Stb will flash in the display during the pause. Push the key to restart the cycle from the point of interruption. In any case the cycle automatically restarts after the PAU time. (See manual)
How to stop a cycle.
Hold the key pressed until the yellow display switch is off and the cycle is stopped.

1. CY1: Hard chill + soft chill + holding
2. CY2: Hard chill + soft chill + freezing + holding
3. CY3: Freezing cycle + holding
4. CY4: Freezing cycle then stop
5. H: Holding mode

Blast Chillers
+70 °C to +3 °C The blast chilling cycle reduce the product temperature from +70 °C to +3 °C in 90 minutes. Bacterial generation is accelerating in the gap between +60 °C  and +10 °C, therefore it is essential to cool the product as fastas possible. Furthermore vitamins, taste and odour are preserved. Should then be stored in normally chiller at +2 °C.

Blast Freezers
+70 °C to -18 °C The blast freezing cycle reduce the product temperature from +70 °C to -18 °C in 240 minutes. The fast reduction of the product temperature increases the lifetime of the product. Furthermore the quality is preserved without major loss of weight, liquid and taste. Should then be stored in normally freezer at -20 °C.

Bacterials in general

PLEASE READ BEFORE USING THIS MANUAL

• This manual is part of the product and should be kept near the instrument for easy and quick reference.
• The instrument shall not be used for purposes different from those described hereunder. It cannot be used as a safety device.
• Check the application limits before proceeding.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the same and unchanged functionality.

SAFETY PRECAUTIONS

• Check the supply voltage is correct before connecting the instrument.
• Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden temperature changes with high atmospheric humidity to prevent formation of condensation
• Warning: disconnect all electrical connections before any kind of maintenance.
• Fit the probe where it is not accessible by the End User. The instrument must not be opened.
• In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.” (see address) with a detailed description of the fault.
• Consider the maximum current which can be applied to each relay (see Technical Data).
• Ensure that the wires for probes, loads and the power supply are separated and far enough from each other, without crossing or intertwining.
• In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel with inductive loads could be useful

GENERAL FEATURES

The series XB has been created for fast chilling or freezing goods according to international food safetystandards.
There are FOUR types of cycles:

• The CYCLES: Cy1, Cy2, Cy3, Cy4 are pre-set according to the most common cycles used in food – safety applications; the user can select one of them according to his own requirements and modify it as he wants.
• Any cycle can be manually terminated before the normal.
• Any cycle can use the insert probes (up to 3), they measures the internal temperature of the product.
• During the Cycle there are no defrosts and the fans are always on, a defrost cycle can be done before any freezing cycle.
• The cycle is divided up to 3 phases completely configurable by the user.
• Each instrument is provided with an output for remote display XR REP, which shows the temperature of cabinets or goods.
• The XB570L controller is provided with internal real time clock and can be connected to the XB07PR printer. This means that a report, which includes all the main features of cycle, can be printed: start and end of the cycle, length of the cycle, logging of the temperature of the cabinet and goods.

MOUNTING & INSTALLATION

Model XB570L is a controller for panel mounting: the cut out dimensions are 150×31 mm and it has to be fixed with screws. The ambient operating temperature range is from 0.0 to 60°C. Avoid locations subject to heavy vibration, corrosive gases or excessive dirt. The same warnings have to be applied to the probes. Ensure enought ventilation around the instrument.
ELECTRICAL CONNECTIONS
The instruments are provided with a screw terminal block to connect cables with a cross section up to 2.5mm2 for probes and digital input. Spade on 6.3 mm heat-resistant wiring for supply and loads. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the input connection cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads, a suitable external relay has to be used.
PROBES CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters and from the warmest place during defrost, to prevent premature defrost termination.

CONNECTIONS

FRONTAL PANEL

QUICK START

DISPLAY

The upper display shows the temperature of the room probe. The lower display shows the temperature of the inserts probe or the count down timer. To pass to the one insert probe to the another one use the DOWN key.

HOW TO START A MANUAL DEFROST.
Assure that none cycle is active or the hold mode is running.

1. Keep UP key pressed a few seconds.
   NOTE: the defrost will not be done if the temperature detected by the evaporator probe is higher than EdF (stop defrost temperature) parameter.

OTHER FUNCTIONS OF KEYBOARD

MEANING OF THE LEDS

A series of light points on the front panels is used to monitor the loads controlled by the instrument. Each LED function is described in the following table.

HOW TO SELECT A CYCLE

1. Push the to move among the cycles C1, C2, C3, C4 and the holding cycle. The related symbol on the display will be lighted and the cycle will be selected.
   • NOTE: to pass from one cycle to another one simply push the key when the controller is in stand–by mode.
   • HOLD PHASE: To select the H symbol to push the .

Cycles are pre-set with the following values:

1. Cy1: for fast chilling and conservation of foods (hard +soft chill).

2. Cy2: for chilling and fast freezing of foods (hard +soft + freezing cycle).
3. Cy3: for direct fast freezing (only fast freezing cycle)
4. Cy4: for fast freezing avoiding ice skin (hard chill + freezing cycle)
5. HLd: hold mode function
6. dEF: for starting a manual defrost

Now the cycle is memorised and can be activated.

HOW TO MODIFY A CYCLE

1. Verify that none cycle is running. If one cycle is running stop it by pushing the key for 3 sec.
2. Push the to move among the cycles C1, C2, C3, C4 and the holding cycle. The related symbol on the display will be lighted and the cycle will be selected
3. Hold and push the key for several seconds till the display will show the first parameter of the selected cycle (cyS) with its value.
4. Use the UP and DOWN keys to browse the parameters.
5. To modify a parameter push the SET key and use the arrow keys.
6. Confirm the new value by pushing the SET key.
7. The new value is recorded even if the programming is exited by time out.

PARAMETERS

REGULATION

• Hy Intervention differential for set point: (0.1 to 12.0 res. 0.1°C or 1°F) always positive. Compressor cut-
• IN is SET+HY. Compressor cut-OUT is when the temperature reaches the set point. AC Anti-short cycle delay: (0 to 30 min) minimum interval between the compressor stop and the following restart.
• PAU Time of stand by: (0 to 60 min) after this time the controller restart the cycle.
• PFt Maximum acceptable duration of power failure: (0 to 250 min) if power failure duration is less than
• PFt, the cycle restarts from the same point at which it was stopped otherwise the cycle restarts from the beginning of the current phase.
• Con Compressor ON time with faulty probe: (0 to 255 min) time during which the compressor is active in case of faulty thermostat probe. With COn=0 compressor is always OFF.
• CoF Compressor OFF time with faulty probe: (0 to 255 min) time during which the compressor is off in case of faulty thermostat probe. With CoF=0 compressor is always active.

PROBES

• rPOThermostat probe calibration: (-12.0 to 12.0, res. 0.1°C or 1°F).
• EPP Evaporator probe presence (not present in the XB350C): (no / YES) no: not present (timed defrost);
• YES: present (end defrost).
• EPO Evaporator probe calibration (not present in the XB350C): (-12.0 to 12.0, res. 0.1°C or 1°F).
• i1P Insert probe 1 presence: (no / YES) no: not present; YES: present.
• i1o Insert probe 1 calibration: (-12.0 to 12.0, res. 0.1°C or 1°F).
• i2P Insert probe 2 presence: (no / YES) no: not present; YES: present.
• i2o Insert probe 2 calibration: (-12.0 to 12.0, res. 0.1°C or 1°F).
• i3P Insert probe 3 presence: (no / YES) no: not present; YES: present.
• i3o Insert probe 3 calibration: (-12.0 to 12.0, res. 0.1°C or 1°F).
• rEM End cycle probe selection: (iPt; rP) it sets which probe stops teh the cycle, thermostat probe or insert probe:
• iPt= insert probe;
• rPt= thermostat probe.
• NOTE: with rEM = rPt when the cycles are done by temperature, the rSi values are used as stop of the cycle.

DISPLAY AND MEASUREMENT UNIT

• CF Temperature measurement unit: °C=Celsius; °F=Fahrenheit.
• rES Resolution (for °C): in=integer; de=with decimal point.
• Lod Upper display visualization: select which probe isshown by the upper display:
• rP=Thermostat probe
• EP=Evaporator probe
• Red Remote display, X-REP, visualization: select which probe is displayed by the X-REP:
• rP=Thermostat probe; EP=Evaporator probe; tiM=cycle count down; i1P=insert probe 1; i2P=insert probe 2; i3P=insert probe 3.

DIGITAL INPUTS

• d1P Door switch input polarity (25-26): (OP; CL) select if the digital input is activated by opening or closingthe contact. OP= opening; CL=closing. odC Compressor and fan status when open door: no=normal;
• FAn=Fan OFF;
• CPr=Compressor(s) OFF;
• F_C=Compressor(s) and fan OFF. doA Open door alarm delay: (0 to 254min, 255=nu) delay between the detection of the open door condition and its alarm signalling: the flashing message “dA” is displayed. If doA=nu the door alarm will be not signalled.
• dLc Stop count down of the running cycle with door open: Y=count down is stopped with door opening; n=count down goes on with door open.
• rrd Regulation restart with door open alarm: Y=count down and regualtion restart when door open alarm is signalled; n=compressor and fans stay according to the odC parameter when door open alarm is signalled.
• d2F Second digital input configuration (26-27): (EAL; bAL) EAL=external alarm; bAL=serious alarm, regulation is stopped.; d2P: Configurable digital input polarity (26-27): (OP; CL) select if the digital input is activated by opening or closing the contact.
• OP=opening; CL=closing. did Time delay for digital input alarm: (0 to 255 min) if d2F=EAL or bAL (external alarms), did parameter defines the time delay between the detection and the successive signalling of the alarm.

AUXILIARY RELAY CONFIGURATION

• oA1 First auxiliary relay configuration (7-8):
• ALL=alarm; Lig=light; AuS=second thermostat; tMr=auxiliary relay enabled by keyboard; C2=second compressor: it is always switched on during the Cycles while depends on the 2CH parameter during the holding phase. oA2 First auxiliary relay
• configuration (1-2):
• ALL=alarm; Lig=light; AuS=second thermostat; tMr=auxiliary relay enabled by keyboard; C2=second compressor it is always switched on during the Cycles while depends on the 2CH parameter during the holding phase. oA3 First auxiliary relay configuration (9-10)
• ALL=alarm; Lig=light; AuS=second thermostat; tMr=auxiliary relay enabled by keyboard; C2=second compressor: it is always switched on during the Cycles while depends on the 2CH parameter during the holding phase.

SECOND RELAY MANAGEMENT

2CH Compressors setting during the holding phase (used only if one OAi =C2): The second compressor is always switched on during the phases, during the holding depends on this parameter. The 2CH sets which compressor is used during the holding phase. Second compressor operates on SET+OAS. (SET is the value loaded during the holding phase of each cycle). It starts oAt min after the first compressor. The following table shows how it works:

| Holding
---|---
2CH =C1| C1 on
2CH =C2| C2 on
2CH =1C2| C1 on; C2 On

• OAt Second compressor switching on delay: (0 to 255 min) time delay between the switching on of the first and second compressor.
• OAS Set point for second compressor (-50 to 50, res.1°C or 1°F) this set point is a differential add to the set point of the first compressor. ES:
• OAS=0 the set point of the second compressor s the same set point of the first compressor.
• OAS=5 the set point of the second compressor is SET (of first compressor) + 5;
• OAS=-5 the set point of the second compressor is SET (of first compressor) – 5.
• OAH Differential for second compressor: (-12.0 to 12.0, res.0.1°C or 1°F, always≠0) second compressor cut IN is SETH+OAS+OAH. Second compressor cut out is when the temperature SETH+OAS.
• OAi Probe selection for the second compressor: rP=thermostat probe; EP=evaporator probe; tiM=cycle count down; i1P=insert probe 1; i2P=insert probe 2; i3P=insert probe 3.

AUXILIARY RELAY MANAGEMENT

• OSt AUX output timer: (0 to 255 min) time in which the AUX output stays ON. It is used when oA1 or oA2 or oA3=tMr. With oAt=0 the AUX relay is switched on and off only manually.
• OSS Set point for AUX output, used when oA1 or oA2 or oA3=AUS: (-50 to 50, res.1°C or 1°F).
• OSH Differential for AUX output: (-12.0 to 12.0, res. 0.1°C or 1°F, always≠0) intervention differential for the set point of the AUX output, with OAH<0 the action is for heating, with OAH>0 it is for cooling.
• COOLING (OSH>0): AUX output cut IN is OSS+OAH. Second compressor cut out is when the temperature SETH+OAS.
• HEATING (OSH<0): second compressor cut IN is OSS-OAH. Second compressor cut out is when the temperature OSS.
• OSi Probe selection for the second compressor: rP=thermostat probe; EP=evaporator probe; tiM=cycle count down; i1P=insert probe 1; i2P=insert probe 2; i3P=insert probe 3.

DEFROST

• tdF Defrost type (not present in the XB350C): rE=electrical heater; in=hot gas.idF Interval between defrost cycles: (0.1 to 24h00min, res. 10 min) determines the time interval between the beginnings of two defrost cycles. dtE Defrost termination temperature: (-50 to 50; res. 1°C or 1°F) sets the temperature measured by the evaporator  probe, which terminates the defrost. Used only if EPP=YES.
• MdF Maximum length for defrost: (0 to 255 min) when EPP=no (timed defrost) it sets the defrost duration, when EPP=YES (defrost termination based on temperature) it sets the maximum length for defrost. If MdF=0 the defrost is disabled.
• dFd Temperature displayed during defrost: (rt; it; SEt; dEF) rt=real temperature; it=temperature at the start of defrost; SEt=set point; dEF=“dEF” message.
• Fdt Drip time: (0 to 60 min) time intervals between reaching defrost termination temperature and the restoring of the controllers’ normal operation. This time allows the evaporator to eliminate water drops that might have formed during defrost.
• dAd Defrost  display to time out: (0 to 120 min) sets the maximum time between the end of defrost and the restarting of the real room temperature display

FANS

• FnC Fans operating mode during the holding phase:
• o-n=continuous mode, OFF during defrost;
• C1n=runs in parallel with the first compressor, OFF during defrost;
• C2n=runs in parallel with the second compressor, OFF during defrost;
• Cn=runs in parallel with compressors, OFF during defrost;
• o-Y=continuous mode, on during defrost;
• C1y=runs in parallel with the first compressor, on during defrost;
• C2y=runs in parallel with the second compressor, on during defrost;
• Cy=runs in parallel with compressors, on during defrost;
• FSt Fan stop temperature: (-50 to 50, res. 1°C or 1°F) it used only if the EPP=YES. If the temperature, detected by the evaporator probe is above FSt fans are stopped. It serves to avoid blowing warm air in the room.
• AFH Differential for the stop temperature and for the alarm: (0.1 to 25.0°C, res. 0.1°C or 1°F) fans carry on working when the temperature reaches the FSt-AFH value, the temperature alarm recovers when the temperature is AFH degrees below the alarm set.
• Fnd Fan delay after defrost: (0 to 255 min) the time intervals between ends of defrost and evaporator fans start.

TEMPERATURE ALARMS

• ALU MAXIMUM temperature alarm (it is used only during the holding phase): (1.0 to 50.0, res. 0.1°C or 1°F) when the SET+ALU temperature is reached the alarm is enabled, (possibly after the ALd delay time).
• ALL Minimum temperature alarm (it is used only during the holding phase): (1.0 to 50.0, res. 0.1°C or 1°F) when the SET-ALL temperature is reached the alarm is enabled, (possibly after the ALd delay time).
• ALd Temperature alarm delay (it is used only during the holding phase): (0 to 255 min) time interval between the detection of an alarm condition and alarm signalling.
• EdA Temperature alarm delay at the end of a defrost (it is used only during the holding phase): (0 to 255 min) time interval between the detection of the temperature alarm condition at the end of defrost and alarm signalling. tbA Silencing alarm relay:
• Y=silencing buzzer and alarm relay; n=only buzzer silencing.

CYCLE LOG

• tCy Duration of the last cycle (read only).
• tP1 Duration of first phase of the last cycle (read only).
• tP2 Duration of second phase of the last cycle (read only).
• tP3 Duration of third phase of the last cycle (read only).

OTHER

• Adr Address for RS485: 1 to 247.
• bUt Buzzer activation at the end of the cycle: (0 to 60 sec; with 0 the buzzer is on till any key will be pushed).
• tPb Kind of probe: it sets the kind of probe used. ntC=NTC, PtC=PTC.
• rEL Release code (read only).
• Ptb Parameter code (read only).

HOW A CYCLE IS DONE

1. Every programmable cycle Cy1, Cy2, Cy3 or Cy4 can be divided into up to 3 phases usually called:
   • hard chill
   • soft chill
   • freezing cycle
2. For each phase there are 3 parameters:
3. iS1 (iS2, iS3): set point related to the insert probes that stops the current phase.
4. rS1 (rS2, rS3): set point of the room temperature for each phase.
5. Pd1 (Pd2, Pd3): the maximum duration time for each phase.
6. Hds: set point of the hold phase at the end of the whole cycle.

There are also 3 parameters: CYS to decide the kinf of cycle, by temperature or by time, and other two related to the defrost. These are dbC (defrost before cycle) and dbH (defrost before holding, at the end of the cycle).

CONFIGURABLE CYCLE PARAMETERS

• CYS Cycle setting: tEP=by temperature. The cycle is done according to the rEM parameter. tiM=timed cycle, based on the Pd1, Pd2, Pd3 parameters. dbc Defrost before the cycle: n; Y.
• iS1 Insert Probe Set point: (-50 to 50, res. 1°C or 1°F) when the temperature measured by the three insert probes reaches this value the first phase is ended.
• rS1 Room probe Set point for the first phase: (-50 to 50, res. 1°C or 1°F) it prevents temperature from reaching a too low value during the hard cycle.
• Pd1 Maximum time for first phase: OFF to 4h00min, res. 10 min. iS2 Insert probe set point: (-50 to 50, res. 1°C or 1°F) when the temperature measured by the three insert probes reaches this value the second phase is ended.
• rS2 Room probe Set point: (-50 to 50, res. 1°C or 1°F) for the second phase: it prevents temperature from reaching a too low value during the second phase. Pd2 Maximum time for second phase: OFF to 4h00min, res. 10 min.
• iS3 Insert Probe Set point: (-50 to 50, res. 1°C or 1°F) to stop the third (and last) phase: when the temperature measured by the three insert probes reaches this value the third phase is ended.
• rS3 Room probe Set point: (-50 to 50, res. 1°C or 1°F) for the third (and last) phase: it prevents temperature from reaching a too low value during the third (and last) phase.
• Pd3 Maximum time for the third phase: OFF to 4h00min, res. 10 min.
• dbH Defrost before the hold phase: n; Y.HdS Set point of the holding phase: (-50 to 50, res. 1°C or 1°F) with “OFF” the hold phase is disabled.
• IMPORTANT NOTE: If the duration time of a phase is set at the OFF value, the corresponding phase is disabled. For example, if Pd3=OFF the third phase of the cycle is not active.

HOW TO USE THE INSERT PROBES

By means the insert probe, the internal temperature of products can be checked. This measure is used toend the various phase of the cycle. A special internal function detect if the inset probe is not used, in this case the cycle is made by time.

EXAMPLE OF A BLAST CHILLER CYCLE

The following drawing explains how a Blast Chiller cycle can be done .

First phase: “Hard chill”.
It is normally used to fast chill hot foods. E.g. from 80°C / 170°F to 20°C / 70°F During “Hard Chill”, both compressor and fan are always on until the rS1 temperature is reached. At this point compressor is turned on end off so as to keep the temperature of the room at the rS1 value. “Hard Chill” ends when the temperature measured by the 3 insert probes reach the iS1 value.
Second phase: “Soft chill”.
The Soft Chill starts when the Hard Chill ends. It is used to prevent thin layer of ice from forming on the product. The Soft Chill lasts until the temperature measured by the 3 insert probes reach the set point iS2 (usually 4 or 5°C). During Soft Chill the temperature of the room is regulated by the ambient probe with the set point rS2 (normally at 0 or 1 °C / 32 or 34°F). When the box temperature reaches the rS2 value compressor is turned on end off so as to keep the temperature of the box at this value.
Third phase : “Freezing cycle”.
Freezing Cycle: used to fast freeze foods. The Freezing Cycle starts when the Soft Chill ends. During the “Freezing Cycle” both compressor and fan are always on until the rS3 temperature is reached. At this point compressor and fans are turned on end off so as to keep the temperature of the room at the rS3 value (normally some degrees below iS3). Freezing Cycle ends when the temperature measured by the 3 insert probes reach the iS3 value (normally -18°C / 0°F), in any case it ends when the maximum time Pd1 + Pd2 + Pd3 has expired.
End of the Blast Chill cycle and starting of the HoldMode.
When one of the three insert probes reaches the iS3 value the values End followed by the i1P or i2P or i3P are shown on the display. Cycle ends when all the probes have reached the iS3 value. A signal is generated: buzzer and alarm relay is turned ON, the display shows the message “End” alternating with the room temperature. The alarm automatically stops after the “but” time or by pressing any keys. At the end of the cycle the controller can start the “Hold mode” keeping the room temperature at the value set in HdS parameter. If HdS = OFF, the machine is turned OFF.
NOTE1: with dbH = yES a defrost is done before the holding phase.
NOTE2: If the end cycle temperature iS3 is not reached in the maximum time Pd1+Pd2+Pd3 the instrument keep on working, but the alarm message “OCF” is given.

INSTALLATION ANDMOUNTING

Instruments XB570L shall be mounted on vertical panel, in a 150×31 mm hole, and fixed using two screws ∅ 3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L). The temperature range allowed for correct operation is 0 to 60°C. Avoid places subject to strong vibrations, corrosive gases, excessive dirt or humidity. The same recommendations apply to probes. Let the air circulate by the cooling holes.

CUT OUT

MOUNTING

XB07PR – PRINTER (OPTIONAL)

The XB570L is designed to work with the XB07PR. The XB07PR kit is composed by:

1. Printer
2. Power adapter
3. Connecting cables

PRINTER DIMENSIONS

PRINTER MOUNTING

CONNECTION TO THE XB570L – XB07PR

ELECTRICAL CONNECTIONS

The instruments are provided with screw terminal block to connect cables with a cross section up to 2.5mm2 for the digital and analogue inputs. Relays and power supply have a Faston connection (6.3mm). Heatresistant cables have to be used. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads use a suitable external relay.
N.B. Maximum current allowed for all the loads is 20A.
PROBE CONNECTIONS
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature.

TTL SERIAL LINE

The TTL connector allows, by means of the external module TTL/RS485, to connect the unit to a network line ModBUS-RTU compatible as the Dixell monitoring system. The same TTL connector is used to upload and download the parameter list of the “HOT KEY”.

USE OF THE PROGRAMMING “HOT KEY “

The Wing units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the “Hot Key” and vice-versa.

DOWNLOAD (FROM THE “HOT KEY” TO THE INSTRUMENT)

1. Turn OFF the instrument by means of the ON/OFF key, remove the TTL serial cable if present, insert the “Hot Key” and then turn the Wing ON.
2. Automatically the parameter list of the “Hot Key” is downloaded into the Wing memory, the “DoL” message is blinking. After 10 seconds the instrument will restart working with the new parameters.
3. Turn OFF the instrument, remove the “Hot Key”, plug in the TTL serial cable and then turn it ON again.

At the end of the data transfer phase the instrument displays the following messages:

• End for right programming. The instrument starts regularly with the new programming.
• Err for failed programming. In this case turn the unit off and then on if you want to restart the download again or remove the “Hot key” to abort the operation.

UPLOAD (FROM THE INSTRUMENT TO THE “HOTKEY”)

1. Turn OFF the instrument by means of the ON/OFF key and remove the TTL serial cable if present; then turn it ON again.
2. When the unit is ON, insert the “Hot Key” and push the UP key; the “UPL” message will appear.
3. Push SET key to start the UPLOAD; the “UPL” message will start blinking.
4. Turn OFF the instrument, remove the “Hot Key”, plug in the TTL serial cable and then turn it ON again.

At the end of the data transfer phase, the instrument displays the following messages:

• End for right programming. The instrument starts regularly with the new programming.
• Err for failed programming. In this case, turn the unit off and then on if you want to restart the download again or remove the “Hot key” to abort the operation.

ALARM SIGNALS

according to parameters Con and CoF
EPF| Evaporator Probe failure| Alarm output ON. Defrost termination is timed. No temperature control on fans.
i1P i2P i3P| Insert probe 1, 2, 3, failure| Alarm output ON. Other outputs unchanged. The cycle is made by time
rtC| Real Time Clock data lost| Alarm output ON. Other outputs unchanged.
rtF| Real Time Clock failure| Alarm output ON. Other outputs unchanged. The date and the duration of the cycle are not available.
HA| Maximum temperature alarm| Alarm output ON. Other outputs unchanged.
LA| Minimum temperature alarm| Alarm output ON. Other outputs unchanged.
FF| Fast freezing interrupted by short power failure| Alarm output ON. The freezing cycle restart from the same point at which was interrupted.
PFA| Fast freezing interrupted by long power failure| Alarm output ON. The freezing cycle restart from the current phase.
OCF| Max duration of the cycle is expired| Alarm output ON. Other outputs unchanged. In any case the cycle ends when the final temperature is reached
EA| External alarm| Alarm output ON. Other outputs unchanged.
CA| Serious external alarm| Alarm output ON. Other outputs OFF.
dA| Door open alarm| Alarm output ON. Other outputs unchanged.

TECHNICAL DATA

• Housing: self extinguishing ABS
• Case: frontal 185×38 mm; depth 70mm
• Mounting: panel mounting in a 150x31mm panel cut-out
• Frontal protection : IP65
• Connections: screw terminal block ≤ 2.5mm2 wiring
• Power supply: 230Vac, ±10%
• Power absorption: 5VA max
• Display: dual display
• Inputs: 5 PTC or NTC probes
• Relay outputs:
  • Compressor: relay SPST 20(8)A or 8(3) A, 250Vac
  • Defrost: relay 8(3)A, 250Vac
  • Fans: relay SPST 8(3)A, 250Vac
  • Light: relay SPST 16(6)A, 250Vac
  • Aux1: relay SPST 8(3)A, 250Vac
  • Aux2: relay SPST 16(6)A, 250Vac
• Serial output : RS232 serial output for XB07PR printer connection
• Serial output : TTL serial output for monitoring system (MODBUS-RTU) protocol
• Data storing: on the non-volatile memory (EEPROM)
• Data storage: non-volatile memory (EEPROM)
• Kinf of action: 1B
• Pollution degree: normal
• Software class: A
• Operating temperature: 0 to 60°C (32 to 140°F)
• Storage temperature: -30 to 85°C (-22 to 185°F)
• Relative humidity: 20 to 85% (no condensing)
• Measuring range: -55 to 50°C (-67 to 122°F)
  • NTC probe: -40 to 110°C (-40 to 230°F)
  • PTC probe : -50 to 150°C (-55 to 302°F)
• Resolution: 0.1°C or 1°F (selectable).
• Accuracy of the controller at 25°C : ±0.3°C ±1digit

STANDARD VALUE OF THE CYCLES

Cy1: for fast chilling and conservation of foods at positive temperature

CyS = tEP| iS2 = 5°C (41°F)| Pd3 = OFF
dbC = no| rS2 =-2°C (28°F)| dbH = yes
iS1 = 20°C (68°F)| Pd2 = 2.0 h| HdS = 3°C (37°F)
rS1 = -10°C (14°F)| iS3 = 3°C (37°F)|
Pd1 = 2.0 h| rS3 =-2°C (28°F)|
Cy2: for chilling and fast freezing of foods with holding

CyS = tEP| iS2 = 5°C (41°F)| Pd3 = 2.0 h
dbC = no| rS2 = -2°C (28°F)| dbH = YES
iS1 = 10°C (50°F)| Pd2 = 2.0 h| HdS =-18°C (0°F)
rS1 = -10°C (14°F)| iS3 =-18°C (0°F)|
Pd1 = 2.0 h| rS3 =-30°C (-22°F)|
Cy3: direct fast freezing with holding

CyS = tEP| iS2 =-18°C (0°F)| Pd3 = OFF
dbC = no| rS2 =-30°C(-22°F)| dbH = yes
iS1 = -18°C (0°F)| Pd2 =OFF| HdS = -18°C (0°F)
rS1 =-30°C (-22°F)| iS3 =-18°C (0°F)|
Pd1 = 4.0| rS3 =-30°C (-22°F)|
Cy4: direct fast freezing without holding

CyS = tEP| iS2 =-18°C (0°F)| Pd3 = OFF
dbC = no| rS2 =-30°C (-22°F)| dbH = no
iS1 =-18°C (0°F)| Pd2 =OFF| HdS = OFF
rS1 =-30°C (-22°F)| iS3 =-18°C (0°F)|
Pd1 = 4.0| rS3 =-30°C (-22°F)|

STANDARD VALUES OF THE PARAMETERS.

C2; tMr
oA2| ALL| Pr2| Configuration of second auxiliary relay| ALL; Lig; AUS; C2; tMr
oA3| Lig| Pr2| Configuration of third auxiliary relay| ALL; Lig; AUS; C2; tMr
2CH| C1| Pr2| Compressor setting during the holding| C1; C2; 1C2
OAt| 3| Pr2| Second compressor switching on delay| 0 to 255 min
OAS| 0.1| Pr2| Set point for second compressor| -50.0 to 50.0°C
OAH| 2.0| Pr2| Differential for second compressor| -12.0 to 12.0°C
OAi| rP| Pr2| Probe selection for second compressor| rP; EP; i1P; i2P; i3P
OSt| 0| Pr2| Auxiliary output timer| 0 to 255 min
OSS| 0.0| Pr2| Output set point delta| -50.0 to 50.0°C
OSH| 2.0| Pr2| Differential for auxiliary output| -12.0 to 12.0°C
OSi| rP| Pr2| Probe selection for auxiliary output| rP; EP; i1P; i2P; i3P
tdF| rE| Pr2| Defrost type| rE; in
idF| 06:00| Pr2| Interval between defrost cycles| 0.1 to 24h00min
dtE| 8| Pr2| Defrost termination temperature| -50.0 to 50.0°C
MdF| 20| Pr2| Maximum length for defrost| 0 to 255 min
dFd| rt| Pr2| Temperature displayed during defrost| rt; it; SET; dEF
Fdt| 0| Pr2| Drip time| 0 to 60 min
dAd| 20| Pr2| Temperature display time after defrost| 0 to 120 min
FnC| c_n| Pr2| Fan operating mode during hold| o-n; C1n; C2n; Cn; o-Y; C1Y; C2Y; Cy
Label| Value| Level| Description| Range
---|---|---|---|---
FSt| 30| Pr2| Fan stop temperature| -50.0 to 50.0°C
AFH| 2.0| Pr2| Differential for the stop temperature and for the alarm| 0.1 to 25.0°C
Fnd| 2| Pr2| Fan delay after defrost| 0 to 255 min
ALU| 30| Pr2| Maximum temperature alarm| 1.0 to 50.0°C
ALL| 30| Pr2| Minimum temperature alarm| 1.0 to 50.0°C
ALd| 15| Pr2| Temperature alarm delay| 0 to 255 min
EdA| 30| Pr2| Alarm delay after defrost| 0 to 255 min
tBA| Y| Pr2| Silencing alarm relay| n; Y
tCy| – – –| Pr1| Duration of last cycle| read only
tP1| – – –| Pr1| Duration of first phase| read only
tP2| – – –| Pr1| Duration of second phase| read only
tP3| – – –| Pr1| Duration of third phase| read only
Adr| 1| Pr2| Indirizzo seriale| 0 to 247
bUt| 2| Pr2| Buzzer activation at the end of the cycle| 0 to 60 sec
tPb| ntC| Pr2| Type of probe| ntC; PtC
Atc| 150| Pr2| Absolute high condenser temperature threshold alarm| +50 to +150°C
btc| 10| Pr2| Absolute low condenser temperature threshold alarm| +10 to +80°C
dAc| 0| Pr2| Condenser alarm delay| 1 to 250 sec (0=nu)
HyA| 5.0| Pr2| Differential for condenser alarm (high and low)| 0.1 to 12.0°C
bAc| n| Pr2| Machine shutdown with Atc alarm active| n; Y
bLc| n| Pr2| Machine shutdown with btc alarm active| n; Y
EPC| EP| Pr2| Evaporator probe configuration| EP, Co
i1c| i1| Pr2| Configuration insertion probe 1:| i1, Co
i2c| i2| Pr2| Configuration insertion probe 2:| i2, Co
i3c| i3| Pr2| Configuration insertion probe 3:| i3, Co
b2| Cy1| Pr2| Configuration key 2| nu, SSt, Cy1
b3| Cy2| Pr2| Configuration key 3| nu, SCy, Cy2
b4| Aus| Pr2| Configuration key 4| nu, Lig, AuS, OnF, dEf, Prn
b7| Hrd| Pr2| Configuration key 7| nu, Prn, Hrd, Cy3
b8| OnF| Pr2| Configuration key 8| nu, AuS, OnF, Lig, dEf
CCH| OFF| Pr2| Heating compressor carter| Only-OFF, ALL
CCt| 0| Pr2| Compressor carter heating activation time| 0 to 250 min (0=nu)
dCy| SC| Pr2| Start cycle by digital input d2F| SC, Cy1, Cy2, Cy3, Cy4
Ptb| —| Pr2| Parameters original map| read only
rEL| 3.1| Pr2| Firmware release| read only
dP2| – – –| Pr2| Evaporator threshold value (if configured)| read only
dP3| – – –| Pr2| Condenser threshold value (if configured)| read only

CONTACT

• Dixell S.r.l. -Z.I. Via dell’Industria,
• 27 – 32010 Pieve d’Alpago (BL) ITALY
• Tel. +39.0437.9833 г.a.
• Fax +39.0437.989313
• EmersonClimate.com/Dixell.
• [email protected].

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