Whirlpool ADN 252 User guide

IT

GB

FR

DE

ES

PT

ADN 252

ADN 253

ADN 254

ADN 255

ADN 256

DESIGN SERIES

10T

10TR

14T

6T

2/1

10T 2/1

ABBATTITORI e SURGELATORI

RAPIDI di TEMPERATURA

BLAST C HILLER AND FREEZERS

SCHNELLKÜHLER CHOCKFROSTER

CELLULES DE REFRIGERATION RAPI DE ET

CON GELATION

ABATI DORE S – CONGELADORES R APIDOS DE

TEMPERATURA

Il costruttore si riserva il diritto di modificare senza preavviso le caratteristiche delle apparecchiature presentate in

questa pubblicazione.

The manufacturer reserves the right to modify the appliances presented in this publication without notice.

Le fabricant se réserve le droit de modifier sans préavis les caractéristiques des appareil présentés dans cette

publication.

Der Hersteller behält sich das Recht vor, die in dieser Broschüre vorgelegten Geräte ohne Voranzeige zuändern.

El constructor se reserva el derecho de modificar sin previo aviso las características de los equipos presentados

en esta publicación.

O fabricante reserva-se o direito de modificar sem aviso prévio as características dos aparelhos apresentados

nesta publicação.

PT

ES

DE

FR

GB

IT

1

ENGLISH

GB

1. INDEX

1. INDEX............................................................................................................................................1

2. ANALYTICAL INDEX.....................................................................................................................2

3. REGULATIONS AND GENERAL INSTRUCTIONS........................................................................3

3.1. General information..............................................................................................................3

3.2. Warranty..............................................................................................................................3

3.3. Replacement of Parts...........................................................................................................3

3.4. Description of the Appliance.................................................................................................4

3.5. Features Plate......................................................................................................................5

4. SAFETY.........................................................................................................................................5

4.1. Safety Devices.....................................................................................................................6

5. USE AND FUNCTIONING..............................................................................................................7

5.1. Description of the Functioning Cycles...................................................................................7

5.2. Description of the Controls...................................................................................................8

5.3. Functionality.........................................................................................................................9

5.4. Recommendations for Use.................................................................................................13

6. CLEANING AND MAINTENANCE................................................................................................15

6.1. Recommendations for Cleaning and Maintenance..............................................................15

6.2. Routine Maintenance..........................................................................................................15

6.3. Extraordinary Maintenance 10T and 14T............................................................................15

6.4. Extraordinary Maintenance 10TR.......................................................................................17

6.5. Extraordinary Maintenance 6T 2/1......................................................................................19

6.6. Extraordinary Maintenance 10T 2/1....................................................................................21

7. TROUBLESHOOTING.................................................................................................................24

7.1. Faults Display.....................................................................................................................25

8. INSTALLATION............................................................................................................................25

8.1. Packaging And Unpacking..................................................................................................25

8.2. Installation..........................................................................................................................26

8.3. Electric Power Supply Connection......................................................................................27

8.4. Condensing unit water connection......................................................................................27

8.5. Remote condensing unit.....................................................................................................28

8.6. Inspection...........................................................................................................................29

9. DISPOSAL OF THE APPLIANCE.................................................................................................30

10. REFRIGERANT TECHNICAL CARD............................................................................................30

ATTACHMENTS................................................................................................................................. I

2

ENGLISH

GB

2. ANALYTICAL INDEX

B

Blast chilling Cycle; 14

C

Cleaning the condenser; 16; 18; 20; 22

Cleaning the evaporator; 16; 18; 20; 22

Condensing unit water connection; 27

D

Defrosting; 7

Description of the Appliance; 4

Description of the Controls; 7

Disposal of the Appliance; 30

Door micro switch; 6

E

Electric Power Supply Connection; 27

Evaporator Fan Micro switch; 6

F

FAULTS; 24

Faults Display; 25

Features Plate; 5

Fuse replacement and thermal relay rearm; 17;

19; 21; 23

G

General information; 3

I

Inspection; 29

Installation; 26

Intensive Blast Chilling Cycle; 14

Intensive timed blast chilling; 7

P

Packaging; 25

Preservation; 7

Prolonged Inactivity; 13

Protective Fuses; 6

R

Recommendations for Cleaning and Maintenance;

15

Recommendations for normal use; 13

Recommendations for Use; 13

REFRIGERANT TECHNICAL CARD; 30

Remote condensing unit; 28

Replacement of Parts; 3

Routine Maintenance; 15

S

SAFETY; 5

Safety Devices; 6

Shock freezing Cycle; 14

SOFT Time Shock Freezing; 7

T

Temperature Blast Chilling; 7

Temperature Blast Chilling (+90 à+3°C); 8

Temperature Shock Freezing; 7

Temperature Shock Freezing (+90 à-18°C); 10

Time Blast Chilling; 7

Time Blast Chilling (+90 à+3°C); 9

Time Shock Freezing; 7

Time Shock Freezing (+90 à-18°C); 10

U

U.V. Lamp Replacement; 17; 19; 21; 23

Unpacking; 25

W

Warranty; 3

3

ENGLISH

GB

3. REGULATIONS AND GENERAL INSTRUCTIONS

3.1. General information

This manual has been designed by the

manufacturer to provide the necessary information

to those who are authorised to interact with the

appliance.

The persons receiving the information must read it

carefully and apply it strictly.

Reading the information contained in this

document will allow the user to prevent risks to

personal health and safety.

Keep this manual for the entire operating life of

the equipment in a place which is well-known and

easily accessible, so that it is always available

when its consultation becomes necessary.

Particular symbols have been used to highlight

some parts of the text that are very important or to

indicate some important specifications. Their

meanings are given below: Caution - Warning

! Indicates important information regarding

safety. Behave appropriately so as not to risk

the health and safety of persons or cause

damage.

Important

iIndicates particularly important technical

information that must not be ignored.

3.2. Warranty

The warranty of the equipment and the

components we produce has duration of 1 (one)

year from the date of delivery and translates into

the supply, free of charge, of parts that we

consider to be faulty.

These faults must, however, be independent from

incorrect use of the product in compliance with the

indications stated in the manual.

Fees deriving from labour, journeys and transport

are excluded from the warranty.

The materials replaced under warranty are our

property and must therefore be returned under the

responsibility and expense of the customer.

3.3. Replacement of Parts

! Activate all envisioned safety devices before

carrying out any replacement intervention.

iIn particular, deactivate the electrical power

supply using the differential isolating switch.

Only use original spare parts to replace worn

components.

iAll responsibility is declined for injury to

persons or damage to components deriving from

the use of non-original spare parts and

interventions which could modify the safety

requisites, without authorisation of the

manufacturer.

4

ENGLISH

GB

3.4. Description of the Appliance

The Blast chiller-Shock freezer, from now on

defined as appliance, has been designed and built

to cool and/or freeze foodstuffs in the professional

catering ambit.

1) condensation area: it is positioned in the

lower part and is characterised by the

presence of the condensing unit.

2) electric area: it is positioned in the upper

part of the appliance and contains the

control and power supply appliance as

well as electric wiring.

3) evaporation area: it is situated inside the

refrigerated compartment in the rear and

is characterised by the evaporating unit.

4) storage area: it is situated inside the

refrigerated compartment and is destined

for the cooling and/or freezing of

foodstuffs.

The lower part is also distinguished by a control

panel (A) that allows access to the electric parts;

there is a vertically-opening door in the front,

which closes the refrigerated compartment

hermetically.

Depending on requirements, the appliance is

produced in several versions.

10 TRAY BLAST CHILLER-SHOCK FREEZER

Model suitable to contain 10 trays with

blast chilling capacity of 40 kg.

10 TRAY BLAST CHILLER and SHOCK

FREEZER

Model suitable to contain 10 trays with

blast chilling capacity of 40 and 25 in

shock freezing.

10 T "R" BLAST CHILLER and SHOCK

FREEZER

Model suitable to contain 10 “insertion

325” trays with blast chilling capacity of 40

and 25 in shock freezing.

14 TRAY BLAST CHILLER-SHOCK FREEZER

Model suitable to contain 14 trays with

blast chilling capacity of 55 kg.

14 TRAY BLAST CHILLER and SHOCK

FREEZER

Model suitable to contain 14 trays with

blast chilling capacity of 55 and 35 in

shock freezing.

6T 2/1 BLAST CHILLER and SHOCK FREEZER

Model suitable to contain 6

GASTRONORM 2/1trays with blast

chilling capacity of 50 and 30 in shock

freezing.

10 TRAY 2/1 BLAST CHILLER

Model suitable to contain 10

GASTRONORM 2/1 trays with blast

chilling capacity of 75 kg.

10T 2/1 BLAST CHILLER and SHOCK

FREEZER

Model suitable to contain 10

GASTRONORM 2/1trays with blast

chilling capacity of 75 and 50 in shock

freezing.

1

3

-

4

A

2

5

ENGLISH

GB

3.5. Features Plate

The identification plate shown is applied directly

onto the appliance. It states the references and all

indications indispensable for working in safety.

1) Appliance code

2) Description of the appliance

3) Serial number

4) Power supply voltage and frequency

5) Electrical absorption

6) Climatic class

7) Type and Amount of refrigerant gas

8) WEEE symbol

4. SAFETY

iIt is recommended to carefully read the

instructions and warnings contained in this

manual before using the appliance. The

information contained in the manual is

fundamental for the safety of use and for machine

maintenance.

! Keep this manual carefully so that it can be

consulted when necessary.

i The electric plant has been designed in

compliance with the IEC EN 60335-2-24

Standard.

, Specific adhesives highlight the presence of

mains voltage in the proximity of areas (however

protected) with risks of an electrical nature.

! Before the connection, ensure the presence of

an omnipolar switch with minimum contacts

opening equal to 3 mm in the mains power supply

upstream from the appliance (requested for

appliances supplied without plug to connect to the

fixed plant).

In the design and construction phase, the

manufacturer has paid particular attention to the

aspects that can cause risks to safety and health

of persons that interact with the appliance.

Carefully read the instructions stated in the

manual supplied and those applied directly to the

machine, and particularly respect those regarding

safety.

Do not tamper or eliminate the installed safety

devices. Failure to comply with this requisite can

lead to serious risks for personal health and

safety.

It is recommended to simulate some test

manoeuvres in order to identify the controls, in

particular those relative to switch-on and switch-

off and their main functions.

The appliance is only destined for the use for

which it has been designed; any other use must

be considered improper.

iThe manufacturer declines all liability for any

damage to objects or injury to persons owing to

improper or incorrect use.

i All maintenance interventions that require

precise technical skill or particular ability must be

performed exclusively by qualified staff.

1

2

3

4

5

6

7

8

6

ENGLISH

GB

! When using the appliance, never obstruct the

air inlet when the appliance is on, so as not to

compromise its performance and safety.

! Never stretch the power cable.

In order to guarantee hygiene and protect the

foodstuffs from contamination, the elements that

come into direct or indirect contact with the

foodstuffs must be cleaned very well along with

the surrounding areas. These operations must

only be performed using detergents that can be

used with foodstuffs, avoiding inflammable

products or those that contain substances that are

harmful to personal health.

In the case of prolonged inactivity, as well as

disconnecting all the supply lines, it is necessary

to accurately clean all internal and external parts

of the appliance.

4.1. Safety Devices

During the running of appliance, some control

devices may activate and govern the correct

running of the machine. In other cases, they may

deactivate parts or the whole machine, to put the

appliance in safe conditions. The main controls

are listed.

Door micro switch

If the door is opened, the

magnetic switch placed on the control board

opens and, during blast-chilling or shock-freezing,

evaporator fans go off and a warning message

appears on the display at the same time. This

condition may also be determined when the door

is not perfectly aligned to or near the control

board: in this case with the machine in the STOP

phase, no cycle may be started.

If a U.V. sterilisation cycle is active, the

functioning of the U.V. lamp is interrupted. The

cycle continues when the door is closed.

Protective Fuses

Some protection fuses in the general power

supply line are activated in case of overload.

Other fuses are prepared for the evaporator fans.

Thermal relay

In the case of faulty operation

that results in exceeding the current absorption

limits of the electric system, the thermal relay will

operate to stop the machine. This intervention is

shown on the display by means of the wording

“HA”. If the circuit breaker relay has intervened, it

must be restored manually (see specific chapter).

High and low pressure switches

If, due to

environmental conditions or faulty operation, the

minimum/maximum pressure values in the

refrigerating circuit should become excessive, the

maximum/minimum safety pressure switch (in the

5 Pans version, only the maximum safety

pressure switch) will operate to stop the

appliance. The machine can be switched on again

only after the pressure has returned to an

acceptable value. If a high pressure alarm should

occur, the wording “HP” will appear on the

display. The wording “LP” will appear if there is a

low pressure alarm.

Evaporator Fan Micro switch

If the deflector is opened to

inspect the evaporator or fans, this micro switch

positioned on the evaporator deflector,

deactivates machine functioning. Closure of the

deflector with the successive disappearance of

the alarm on the display, restores normal machine

functioning.

7

ENGLISH

GB

5. USE AND FUNCTIONING

5.1. Description of the Functioning Cycles

The following are brief descriptions and types of

operating cycles.

Temperature Blast Chilling

This cycle allows a reduction in temperature in the

product core from +90°C to +3°C as quickly as

possible and within a MAX time of 90 minutes.

The cycle ends when the value +3°C, read by the

needle probe, is reached.

Time Blast Chilling

This cycle allows a reduction in temperature in the

product core from +90°C to +3°C during the set

time: we remind you that it is advisable to run

some previous testing temperature cycles so to

determine the necessary time for a correct

product blast chilling process. Do not forget that

acquired times and eventually memorised have to

be considered valid for exclusive use of the same

type of product and in the same quantities per

cycle.

Intensive timed blast chilling

For the use of this cycle, the information

contained in the previous paragraph is applicable

concerning the time which can be set and the final

temperature of the product.

The use of this function, which makes it possible

to reduce chilling times, is recommended for foods

with the following characteristics:

Ø Packaged foods or foods in containers

Ø Foods with a thickness greater than 50

mm

Ø Foods with a high fat content

Temperature Shock Freezing

This cycle allows a reduction in temperature in the

product core from +90°C to -18°C as quickly as

possible and within a MAX time of 270 minutes.

The cycle ends when the value -18°C, read by the

needle probe, is reached.

Time Shock Freezing

This cycle allows a reduction in temperature in the

product core from +90°C to -18°C during the set

time: we remind you that it is advisable to run

some previous automatic test cycles so to

determine the necessary time for a correct

product blast chilling process. Do not forget that

acquired times and eventually memorised have to

be considered valid for exclusive use of the same

type of product and in the same quantities per

cycle.

SOFT Time Shock Freezing

The use of this function is recommended in the

presence of foodstuffs that fear a large initial heat

shock or foodstuffs with different ingredients as

composition (e.g.: fresh pasta) and therefore

require slower and homogeneous shock freezing.

Preservation

At the end of each cycle as described above,

either temperature or time cycle, the preservation

cycle will be started automatically, with no time

limit. The freezer temperature will refer to last

cycle, just concluded:

Ø + 3°C for blast chilling

Ø -25°C for shock-freezing

Warning: use of this cycle is recommended only

for short periods prior to storage of the product in

a storage unit or in case of emergency, so as to

avoid such a limited use of a machine with such

high potential.

Defrosting

The frost forming on the evaporator following the

deposit of humidity from the product can

jeopardise the correct functioning of the

appliance. A defrosting cycle must be carried out

to restore full functionality.

The defrosting cycle ends automatically when the

set temperature is reached.

8

ENGLISH

GB

5.2. Description of the Controls

Below is a brief description of the functions carried

out by the keys on the control panel.

Temperature Blast chilling Key

By pressing the key with the machine at a

standstill, it allows to select a temperature blast

chilling cycle (+90°Cà+3°C).

Time Blast chilling Key

By pressing the key with the machine at a

standstill, it allows to select a time blast chilling

cycle.

Time Blast chilling Key

By pressing the key with the machine at a

standstill, it allows to select a temperature shock

freezing cycle (+90°Cà-18°C).

Time Shock freezing Key

By pressing the key with the machine at a

standstill, it allows to select a time shock freezing

cycle.

Intensive Cycle Key

The key is active in the time cycles. If pressed

after a blast chilling cycle has been selected, it

selects the intensive function; if pressed after a

shock freezing cycle has been selected, it selects

the SOFT function.

If pressed for 5 seconds with the machine

stopped, it makes it possible to set the current

time, day and year

.Time increase and decrease keys

When the time blast chilling and/or shock freezing

mode is selected, these buttons allow to set the

cycle duration.

If is pressed during automatic temperature-

regulated cycle, it makes it possible to change

from the display of the needle temperature to the

display of the compartment temperature (display

DY1).

If is pressed during a temperature-regulated

cycle, it makes it possible to pass from the display

of the remaining time to display of the real time

passed from the start of the cycle (display DY2).

Pressing both keys simultaneously makes it

possible to enter parameters programming mode.

Cycle start key

Once a cycle has been selected, press this button

to start the cycle.

If it is pressed during functioning the appliance

stops; the setting of the previous cycle selected

remains, which can be started immediately.

By pressing this button for at least 5 seconds the

machine passes to the stand-by mode. Repeat

the procedure to reactivate the board.

DEFROST key

When the machine is off a manual defrosting

cycle can be started.

The defrosting cycle ends automatically when the

set temperature is reached.

Heated Probe Key

In appliances in which the needle probe can be

heated, once this key is pressed with the machine

stopped, makes it possible to heat the needle

probe so that it is easier to pull it out of the frozen

product.

If during a chilling / freezing cycle the "needle

probe not inserted" alarm is signalled (see

paragraph on alarms), press the key to silence the

alarm after checking that the needle probe is

properly inserted into the product, then restore

automatic operation.

Germicidal lamp key

With the machine stopped and the door closed, it

makes it possible to switch on an internally

located UV lamp for a set time. This lamp

sterilises the compartment at the beginning and at

the end of the day after it has been cleaned.

Programmes Selection Key

With the machine at a standstill, it makes it

possible to recall and/or memorise 99 timed

chilling or freezing programs.

DY1

DY2

9

ENGLISH

GB

5.3. Functionality

Temperature Blast Chilling (+90 à+3°C)

Select positive chilling by pressing (the

corresponding LED switches on) confirmed by the

lighting of LED L4. The display DY2 shows the

maximum possible time for this cycle: 90 minutes.

Insert the needle probe into the product.

Start the cycle by pressing the key (the

corresponding LED switches on). The start of the

cycle is also confirmed by LED L1 switching on.

During the first minutes of operation, the control

unit checks the exact positioning of the needle

probe.

The appearance on display DY1 of

the “o - -” message accompanied by

an intermittent sound means that the

verification of the correct insertion of

the product probe has given a

negative result and therefore the reading on the

needle probe cannot be considered as valid. The

control unit activates a timed safety cycle (LEDL4

switches off and LED L5switches on).

To silence the alarm and re-activate the automatic

temperature-regulated cycle, re-position the

needle probe and then press (LED L5

switches off and LED L4 switches on).

If the product has not reached 3°C

after 90 minutes the cycle is not

concluded: the buzzer is triggered

intermittently and indicators DY1 and

DY2 indicate the temperature of the

product and “OUt“ respectively.

The blast chilling cycle is concluded

successfully as soon as the

temperature measured by the

product probe reaches 3°C: the

buzzer is triggered intermittently and indicators

DY1 and DY2 indicate “End” and “---“

respectively. An automatic preservation cycle is

activated (LEDL1 switch off and L2 switch on).

Press to conclude the preservation cycle.

Time Blast Chilling

Select positive chilling by pressing (the

corresponding LED switches on) confirmed by the

lighting of LED L5.

If you wish to choose the intensive chilling cycle,

press (the corresponding LED switches on)

Select the required blast chilling time using keys

and .

Start the cycle by pressing the key (the

corresponding LED switches on). The start of the

cycle is also confirmed by LED L1 switching on.

The correct conclusion of the cycle is

signalled by the “End” message on

display DY2 and by an intermittent

noise for a few seconds.

At the end of the set time, the blast chilling cycle

is concluded and a preservation cycle is

automatically started (LED L1 switch off and

LEDL2 switch on).

Press to conclude the preservation cycle.

Notes: the duration of the intensive phase is

calculated automatically by the control unit based

on the set time; the final part of the cycle does

however take place in normal mode to avoid

surface freezing of the product and is confirmed

by the extinguishing of the LED that corresponds

to .

1

L5

L1

L2

1

L4

L

1

L2

10

ENGLISH

GB

Temperature Shock Freezing (+90 à-18°C)

Select freezing by pressing (the

corresponding LED switches on) confirmed by the

lighting of LED L4. The display DY2 shows the

maximum possible time for this cycle: 270

minutes.

Insert the needle probe into the product.

Start the cycle by pressing the key (the

corresponding LED switches on). The start of the

cycle is also confirmed by LED L1 switching on.

During the first minutes of operation, the control

unit checks the exact positioning of the needle

probe.

The appearance on display DY1 of

the “o - -” message accompanied by

an intermittent sound means that the

verification of the correct insertion of

the product probe has given a

negative result and therefore the reading on the

needle probe cannot be considered as valid. The

control unit activates a timed safety cycle (LEDL4

switches off and LED L5switches on).

To silence the alarm and re-activate the automatic

temperature-regulated cycle, re-position the

needle probe and then press (LED L5

switches off and LED L4 switches on).

If the product has not reached -18°C

after 270 minutes the cycle is not

concluded: the buzzer is triggered

intermittently and indicators DY1 and

DY2 indicate the temperature of the

product and “OUt“ respectively.

The shock freezing cycle is

concluded successfully as soon as

the temperature measured by the

product probe reaches -18°C: the

buzzer is triggered intermittently and indicators

DY1 and DY2 indicate “End” and “---“

respectively. An automatic preservation cycle is

activated (LEDL1 switch off and L2 switch on).

Press to conclude the preservation cycle.

Time Shock Freezing (+90 à-18°C)

Select freezing by pressing (the

corresponding LED switches on) confirmed by the

lighting of LEDL5: in this cycle the intensive

function is activated automatically (the

corresponding LED switches on )

If you wish to choose the SOFT freezing cycle,

press (the corresponding LED switches off)

Select the required shock freezing time using keys

and .

Start the cycle by pressing the key (the

corresponding LED switches on). The start of the

cycle is also confirmed by LED L1 switching on.

The correct conclusion of the cycle is

signalled by the “End” message on

display DY2 and by an intermittent

noise for a few seconds.

At the end of the set time, the shock freezing

cycle is concluded and a preservation cycle is

automatically started (LED L1 switch off and LED

L2 switch on).

Press to conclude the preservation cycle.

HACCP data printer (Optional)

If the printer is enabled, the following events are

printed:

Ø print heading : date, time and selected cycle;

Ø cycle start: compartment and needle

temperature;

Ø alarms : type of alarm, time, compartment

and needle temperature;

Ø cycle end: time, compartment and needle

temperature;

Ø start preservation: time, compartment and

needle temperature;

1

L5

L1

L2

1

L4

L1

L2

11

ENGLISH

GB

Ø Defrost: time, compartment and needle

temperature;

Ø alarms : type of alarm, time, compartment

and needle temperature;

Ø preservation record: time, compartment and

needle temperature every 30 minutes:

The alarms that can be printed are:

DOOR →Door opening

DFL →Evaporator deflector

HP →High pressure

LP →Low pressure

HT →Condenser high T

HA →Compressor circuit breaker switch

AL →Compartment high temperature alarm

(HACCP)

A printing example follows.

Programs Memorisation

To memorise a work cycle, set it as if it were a

timed program in machine standstill mode.

Press for at least 5 seconds, a beep of the

buzzer confirms the input into programs

memorisation.

Flashing P1 appears on display DY1

corresponding to the first program that can be

memorised; select and the program

number to memorise: display DY2 will show the

message "USE" if the program is already used.

Press again to confirm the memorisation.

Note:

If a program is selected with data that is already

set, this program will be overwritten with the newly

set data.

If more than ten seconds have passed since the

last key pressed, DY1 will once again display the

temperature. Memorisation will be exited and the

program will not be memorised.

************************

------------

************************

Date:24/09/2004

Time:12:28:45

Program:Automatic

CORE Freezing

Start

TIME CHAMBER CORE

0:00 20 62

Alarm:DOOR

0:55 1 11

End

TIME CHAMBER CORE

1:35 -3 3

Holding Cycle

Start

TIME CHAMBER CORE

18:10 -3 4

18:40 3 3

********DEFROSTING*****

18:45 6 3

Alarm: DOOR

18:55 8 3

1

DY1

DY2

12

ENGLISH

GB

Programs Recall

With the machine stopped, press and release

(the corresponding LED switches on). The

temperature display shows the code P followed by

the program number, for example P1, while the

time display shows the memorised set time and

the LED indicators that correspond to the selected

operating mode switch on.

Select the required program using keys and

. If a program is selected that has not been

memorised, “ --- “ appears on the display and the

blast chilling mode LEDs remain off.

Once the required programme has been selected,

press to start the cycle.

If ten seconds pass from the last time a key is

pressed the display DY1 displays the

temperature.

4.4.3. Setting the time and date

To access time setting, press for at least five

seconds.

The display DY1 will show Hr (hours), Mn

(minutes), dA (day), Mo (month) and Yr (year),

while display DY2 will display the settings relative

to the abbreviations shown by display DY1. Press

to scroll the various abbreviations, while

and can be used to update the relative

values. Exit timer setting by pressing after

having displayed Yr (year) or due to timeout of 10

seconds.

The new data set for the timer is immediately

active

Defrosting

v Make sure the machine is in STOP mode.

v Press key for defrosting.

The “DEF” message on the display indicates a

defrosting cycle is in progress.

Defrosting is performed by forced ventilation using

the evaporating fans; the cycle may be performed

with the door open or closed and be interrupted at

any time by pressing the key.

DY1

DY2

1

DY1

DY2

13

ENGLISH

GB

Needle Probe Heating (Optional)

At the end of a work cycle, press (the

corresponding LED switches on) to activate

needle probe heating, which will make it easier to

extract the probe from the frozen product. Display

DY1 will show ‘Prb’:

This function is not active if:

· the needle probe provided is not a type

which can be heated

· the temperature of the needle probe is

greater than 0°C

The cycle is automatically interrupted at the end of

the envisioned time.

UV lamp (optional)

At the end of the job, after having cleaned the

compartment, press (the relative LED

switches on) compartment sterilization is

activated using the ultra-violet light; display DY1

shows ‘StE’:

This cycle can be started only with the door

closed and it will be interrupted immediately if the

door is opened during sterilization.

For correct machine efficiency and hygiene, it is in

any case advisable to clean the compartment

thoroughly each time you finish using the

machine.

5.4. Recommendations for Use

Prolonged Inactivity

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 doors ajar to prevent the formation

of mould and/or unpleasant odours.

Recommendations for normal use

In order to ensure correct use of the appliance, it

is good practice to apply the following

recommendations:

! Do not obstruct the zone in front of the

condensing unit in order to favour heat disposal

from the condenser to a maximum.

Always keep the front of the condenser clean.

áDo not insert foodstuffs that are well above

the temperature of 65°C. As well as initially

overloading the machine it can make protections

intervene that prolong temperature descent times.

If possible, a brief external period is useful to

lower the temperature to acceptable values.

Check the planarity of the appliance rest surface.

i Do not stack the materials to be preserved

in contact with the internal walls, so blocking the

circulation of air, which guarantees uniformity of

the internal temperature of the refrigerated

compartment.

i There must be a sufficient space between

the basins and trays used in order to guarantee a

sufficient flow of cold air on the entire product.

Therefore avoid the following positions of trays

and/or basins stated below.

i Never obstruct the inlet of the evaporator

fans.

1

DY1

14

ENGLISH

GB

i Products that are more difficult to chill

because of their composition and size should be

placed in the centre.

Limit the number of times and the duration of time

the doors are opened.

! Blast chilling data refer to standard products

(low fat content) with a thickness below 50 mm;

therefore avoid overlaying products or the

insertion of pieces with a much higher thickness.

This would, in fact, lead to an extension of blast

chilling times. Always distribute the product well

on the trays or basins or in the case of thick

pieces decrease the amount to blast chill.

iAfter 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.

i 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.

! To extract the product that has undergone blast

chilling or shock freezing, always wear gloves to

protect the hands, as "burns" may occur from the

cold.

i 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 cycle

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).

i Intensive Blast Chilling Cycle

With this operating mode, at the beginning the

chiller maintains the temperature of the

refrigerating compartment at a much lower than

the value set for normal chilling, in order to

accelerate the drop in temperature of the product.

When the product reaches the fixed temperature

(temperature at which ice could form on the

external surface product) the internal temperature

of the compartment rises to the temperature set

for normal positive chilling. This blast chilling

method should be used preferably for products

that are packed and whose physical/organoleptic

characteristics are not damaged by the formation

of superficial ice.

i Shock freezing Cycle

With this chilling modality the chiller maintains the

temperature value in the compartment 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.

i Shock freezing Cycle SOFT

In this case, the shock freezing cycle is divided in

two phases that differ depending on the

compartment set point used. The first phase

consists in a cycle around the compartment set

point defined for normal blast chilling. The

passage to the second phase starts when the

core-probe reaches a pre-defined temperature

exchange value or when the time elapsed is equal

to a pre-set percentage of the total time. In the

second phase, the compartment reference set

point will be the same as the shock freezing one.

This type of shock freezing allows a more even

freezing of the product, avoiding the external

formation of ice when the core temperature is still

high.

15

ENGLISH

GB

6. CLEANING AND MAINTENANCE

6.1. Recommendations for Cleaning and Maintenance

! Activate all envisioned safety devices before

carrying out any maintenance interventions. In

particular, deactivate the electrical power supply

using the automatic isolating switch.

6.2. Routine Maintenance

Routine maintenance consists of daily cleaning of

all the parts which can come into contact with

foodstuffs and the periodic maintenance of the

burners, nozzles and draining pipes.

Correct maintenance allows the user to maximise

performance levels and operating life and

constantly maintain safety requirements.

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 oxidising, could lead to rust.

To remove hardened residues, use wooden or

plastic spatulas or abrasive rubber pads.

During long periods of inactivity, spread a

protective layer on all stainless steel surfaces by

wiping them with a cloth soaked in Vaseline oil

and airing the rooms periodically.

! Do not use products which contain substances

which are harmful and dangerous for personal

health (solvents, petrol etc.).

At the end of the day it is advisable to clean:

Ø the cooling compartment

Ø the appliance.

6.3. Extraordinary Maintenance 10T and 14T

iHave the following operations carried out

periodically by specialised staff:

Ø Check the perfect sealing of the door

gaskets and replace them if necessary.

Ø Check that the electric connections have

not loosened.

Ø Check the efficiency of the heating

element resistance

Ø Check functioning of the board and

probes.

Ø Check the efficiency of the electrical

system.

Ø Clean the evaporator.

Ø Clean the condenser.

16

ENGLISH

GB

Cleaning the evaporator

Clean the evaporator periodically.

! As the fins of the evaporator are very sharp,

always wear protective gloves for the next

phases.

i Only a brush must be used for cleaning: do

not use jets of liquid or sharp instruments.

To access the evaporator proceed as follows:

1. Open the door (A) of the appliance.

2. Remove the runners (B):

3. Loosen the two screws (C) on the right of the

deflector.

4. Turn the deflector (D) to the left

Cleaning 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.

i 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 appliance.

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.

C

B

D

C

A

B

D

A

C

B

17

ENGLISH

GB

Fuse replacement and thermal relay rearm

i The fuses (A) and the thermal relay (B) are

in the upper part of the blast chiller. To access

these just open the control panel (C) by loosening

the two screws positioned in the lower part of the

control panel and rotating it upwards. After

opening, make sure that it does not fall back

down.

U.V. Lamp Replacement

To access the evaporator proceed as follows:

1. Open the door (A) of the appliance.

2. Remove the runners (B):

3. Loosen the two screws (C) on the front of the

deflector.

4. Turn the deflector (D) to the right.

Once the deflector is turned, it is possible to

switch the UV lamp on. That lamp can be

removed turning it (E). Carry out all the operations

in reverse order after having removed the U lamp.

6.4. Extraordinary Maintenance 10TR

iHave the following operations carried out

periodically by specialised staff:

Ø Check the perfect sealing of the door

gaskets and replace them if necessary.

Ø Check that the electric connections have

not loosened.

Ø Check the efficiency of the heating

element resistance

Ø Check functioning of the board and

probes.

Ø Check the efficiency of the electrical

system.

Ø Clean the evaporator.

Ø Clean the condenser.

B

D

C

B

A

E

B

C

A

Rearm the thermal relay

using the grey button

18

ENGLISH

GB

Cleaning the evaporator

Clean the evaporator periodically.

! As the fins of the evaporator are very sharp,

always wear protective gloves for the next

phases.

i Only a brush must be used for cleaning: do

not use jets of liquid or sharp instruments.

To access the evaporator proceed as follows:

1. Open the door (A) of the appliance.

2. Remove the runners (B):

3. Loosen the two screws (C) on the front of the

deflector.

4. Turn the deflector (D) to the left

Cleaning 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.

iWhenever 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 appliance.

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.

C

B

D

C

A

B

D

A

C

B

Page is loading ...

Whirlpool ADN 252 User guide

This manual is also suitable for

Whirlpool ADN 252 User guide

in other languages

Related papers

Other documents