Metos HALO User manual

06.03.2015

Rev. 1.3

Installation and Operation Manual

COLD DISPLAY

HALO, HALO LED

4312000, 4312002, 4312004, 4312030, 4312032, 4312034, 4312060, 4312062, 4312064, 4312100, 4312102, 4312104, 4312110, 4312112, 4312114, 4312130, 4312140,

4312132, 4312134, 4312180, 4312182, 4312184, 4312186, 4312188, 4312190, 4312286, 4312160, 4312162, 4312164, 4312170, 4312172, 4312174, 4312192, 4312194,

4312196, 4312106, 4312108, 4312200, 4312202, 4312204, 4312210, 4312212, 4312214, 4312230, 4312232, 4312234, 4312240, 4312280, 4312282, 4312284, 4312288,

4312290, 4312260, 4312262, 4312264, 4312270, 4312272, 4312274, 4312292, 4312294, 4312296, 4312206, 4312208

4312101, 4312103, 4312131, 4312133, 4312001, 4312003, 4312031, 4312033

06.03.2015 Rev. 1.3

METOS HALO, HALO LED

TABLE OF CONTENTS

1. General .......................................................................................................................................................3

1.1. Symbols used in the manual .......................................................................................................................3

1.2. Symbols used on the appliance...................................................................................................................3

1.3. Checking the relation of the appliance and the manual...............................................................................3

2. Safety .........................................................................................................................................................4

2.1. Safe use of the appliance ............................................................................................................................4

2.2. Disposal of the appliance ............................................................................................................................4

3. Functional description ..............................................................................................................................5

3.1. Intended use of the appliance.....................................................................................................................5

3.1.1. Use for other purposes ...............................................................................................................................5

3.2. Operating principle ......................................................................................................................................5

3.2.1. Control panel ...............................................................................................................................................5

4. Operating instructions ..............................................................................................................................6

4.1. Operation.....................................................................................................................................................6

4.2. After use......................................................................................................................................................7

4.2.1. Cleaning.......................................................................................................................................................7

5. Installation .................................................................................................................................................8

5.1. Operating conditions ...................................................................................................................................8

5.2. Transport and storage..................................................................................................................................8

5.3. Unpacking the appliance..............................................................................................................................8

5.4. Installation ...................................................................................................................................................9

5.4.1. Condenser air circulation.............................................................................................................................9

5.5. Electrical connections................................................................................................................................ 10

5.6. Start-up......................................................................................................................................................10

5.7. Temperature adjustment ...........................................................................................................................10

6. Thermostat operation .............................................................................................................................10

6.1. Thermostat, cold display ...........................................................................................................................10

6.1.1. Keylock ...................................................................................................................................................... 11

6.1.2. Displayeing the set point........................................................................................................................... 11

6.1.3. Changing the set point .............................................................................................................................. 11

6.1.4. Manual defrost .......................................................................................................................................... 11

6.2. Thermostat, refrigerated cupboard............................................................................................................12

7. Troubleshooting.......................................................................................................................................13

8. Technical speciﬁcations ..........................................................................................................................15

06.03.2015 Rev. 1.3

METOS HALO, HALO LED

1. General

Carefully read the instructions in this manual as they contain important information regarding proper,

efﬁcient and safe installation, use and maintenance of the appliance.

Keep this manual in a safe place for eventual use by other operators of the appliance.

The installation of this appliance must be carried out in accordance with the manufacturer’s instructions

and following local regulations.

Persons using this appliance should be speciﬁcally trained in its operation.

Switch off the appliance in case of failure or malfunction. The periodical function checks

requested in the manual must be carried out according to the instructions. Have the appliance serviced

by a technically qualiﬁed person authorized by the manufacturer and using original spare parts.

Not complying with the above may put the safety of the appliance in danger.

1.1. Symbols used in the manual

This symbol informs about a situation where a safety risk might be at hand. Given instructions are man-

datory in order to prevent injury.

This symbol informs about the right way to perform in order to prevent bad results, appliance damages

or hazardous situations.

This symbol informs about recommendations and hints that help to get the best performance out of the

appliance.

1.2. Symbols used on the appliance

This symbol on a part informs about electrical terminals behind the part. The removal of the part must be

carried out by qualiﬁed persons only. The machine is sensitive to electrostatic discharge (ESD), which is

why a static electricity wristband must be used when handling the electronics.

1.3. Checking the relation of the appliance and the manual

The rating plate of the appliance indicates the serial number of the appliance. If the manuals are missing,

it is possible to order new ones from the manufacturer or the local representative. When ordering new

manuals it is essential to quote the serial number shown on the rating plate.

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METOS HALO, HALO LED

2. Safety

2.1. Safe use of the appliance

For safe use of the appliance, observe the following safety instructions:.

• When moving or servicing the appliance, always unplug it from the power supply.

• While cleaning the appliance, be cautious not to allow the electrical devices to come into contact with

water. Spraying water in the immediate vicinity of the appliance is forbidden.

• Exposing the appliance to the rain is forbidden.

• Only connect the appliance to an earthed socket.

If the appliance is not used for a long time, it should be unplugged from the power supply, cleaned and

wiped dry on the inside.

2.2. Disposal of the appliance

The appliance contains parts and components, the disposal of which requires special treatment. Contact

local authorities to obtain instructions on how to dispose of the appliance.

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METOS HALO, HALO LED

3. Functional description

3.1. Intended use of the appliance

The appliance is designed for use in serving lines, restaurants, cafés and kitchens.

The upper section and basin of the cold display are designed for short-time storage of precooled foodstuffs

before distribution. The appliance is not intended for refrigerating products from higher temperatures. The

cupboard of models equipped with a refrigerated cupboard is intended for cold storage of products.

The front of the Halo air curtain display is open. Keeping the products cold is ensured with effective cold

air circulation.

3.1.1. Use for other purposes

Use of the appliance for any other purposes is prohibited.

Consult the manufacturer in case you intend to use the appliance for other purposes than stated above.

3.2. Operating principle

The appliance is equipped with its own refrigeration unit or it can be connected to a central unit.

3.2.1. Control panel

Control panel

1. Main switch (green)

2. Thermostat

3. Light switch (orange)

2 3

Control panel (models with refrigerated cupboard)

1. Main switch (green)

2. Thermostat, display (Dixell)

3. Light switch (orange)

4. Thermostat, refrigerated cupboard (Elliwell)

1 2 3 4

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METOS HALO, HALO LED

4. Operating instructions

4.1. Operation

Before putting products in the unit, wait until it has reached the temperature set with the thermostat.

Correct cold storage of foodstuffs facilitates kitchen activities and affects energy consumption.

Please observe the following points when using the appliance:

• Do not put products in the appliance until it has reached the correct operating temperature.

• Always keep the products in good order.

• Do not unnecessarily keep the cupboard door open.

• Always keep the sliding doors of the showcase properly closed.

• Do not store spoiled food in the unit.

• Dry moisture off the shelves and interior walls as needed.

• Monitor the internal temperature of the unit daily.

• Preserve the products in dishes ﬁtted with lids or cover them with a plastic foil.This helps to keep the

evaporator free from ice.

When placing products in the cupboard, sufﬁcient air circulation should be ensured. Do not place pro-

ducts in touch with walls.

The appliance is equipped with automatic defrost, which means that the user does not need to bother

with defrosting.

In normal conditions, the thermostat need not be adjusted. In case adjustment, however, is required, see

instructions in “Installation/Temperature adjustment”.

Do not adjust temperature below + 4°C.

Warm, humid summer-time may cause condensation on the exterior surfaces of the refrigerated display.

Humidity is not present inside the display, so it does not damage products.The problem can be managed

by slightly raising the temperature of the appliance. In general, a rise as small as 2°C will considerably

decrease condensation.

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METOS HALO, HALO LED

4.2. After use

4.2.1. Cleaning

In normal use, the appliance does not require any other daily care than sufﬁcient cleaning.

The interior and exterior of the appliance is mainly of stainless steel. For cleaning the interior and exterior,

use neutral or slightly alkaline cleaning agents or wipe the surfaces with a damp cloth. Abrasive materials

should not be used, especially not on acrylic surfaces.

Cleaning the appliance with a hose is forbidden. Do not either spray water in the immediate vicinity of

the appliance, because water sprayed can get into the vent holes of the compressor cassette or into the

display’s electrical connections, thus causing a hazardous situation.

The inner part of the basin can be detached without tools for cleaning.

Clean the condenser (units equipped with own machinery) once a week. The machinery does not nor-

mally require any other cleaning.

Vacuum-clean the condenser by using a plastic nozzle to avoid damaging the condenser.

Before vacuum-cleaning the condenser, switch off the appliance at the power supply by unplugging the

electric cable from the socket.

Other cleaning measures than the condenser cleaning should be carried out by an authorized service

company.

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METOS HALO, HALO LED

5. Installation

5.1. Operating conditions

The appliance should not be placed in a location exposed to heavy thermal load, e.g. direct sunlight or

thermal radiators. Positioning cold equipment close to bain maries and ovens should be avoided.

The appliance is designed for operation in normal ambient conditions (i.e. temperature +10°C to + 25°C,

relative humidity max. 60 %).

5.2. Transport and storage

The appliance should be transported to the installation site in its transport package. Do not remove

package until in the immediate vicinity of the installation place. The appliance should be transported in

an upright position.

The appliance is made of polished stainless steel and of plastic/glass, so it can become scratched very

easily in site conditions. Therefore, the appliance should be delivered to the installation site at a later

stage of construction work. It is forbidden to use the appliance as an installation base.

The appliance should not be stored outdoors, not even in its transport package.

In case the appliance has been stored in a non-heated location so that its temperature and particularly

the temperature of the machinery has fallen below 0°C, the appliance should be kept in room tempe-

rature until the machinery temperature is at least 10°C. Starting the cold machinery may damage the

compressor.

In case the appliance has been heavily tilted just before the intended start-up, you should wait about 30

minutes before switching the appliance on. Otherwise the oil accumulated in the suction inlets of the

compressor may damage the compressor with a hydraulic shock.

5.3. Unpacking the appliance

Remove foils protecting the stainless steel and plastic surfaces cautiously to prevent the surfaces from

getting scratched.

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METOS HALO, HALO LED

5.4. Installation

The appliance is supplied with adjustable legs. Mount the appliance with the help of the adjustable legs

in a horizontal position as accurately as possible, ensuring that the appliance rests evenly on all legs. If

adjustment is not performed with great care, the door and locks may not work properly.

It is not possible to adjust an appliance ﬁtted with wheels.

Units intended for marine use are welded in place or bolted from the mounting holes of the adjustable

legs to the deck.

5.4.1. Condenser air circulation

Ensure sufﬁcient air inlet/air circulation for the condenser.

The display should not be installed in a place where external air ﬂow disturbs the display’s air circulation.

Disturbance can be caused, for example, by

• positioning of ventilation equipment

• heat sources that radiate or blow warm air towards the display’s front section (not either should these

be located near the display ends).

If a refrigerated display is installed in a serving line, care should be taken that there is no air gap between

the unit and the tray slide, through which warm air could get into the unit’s cooling air circulation (item A).

Make sure that the condenser air inlet is not blocked and that warm air can freely exit through the front

section (and cannot get back into the unit).

Condenser air circulation (models with refrigerated cupboard)

10 |

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METOS HALO, HALO LED

5.5. Electrical connections

Connect the appliance to the power supply with an earthed socket. For making the connection, a socket

protected with a fuse of 16 A has to be provided for each unit.

5.6. Start-up

After connecting the appliance to the power supply, turn on the main switch (green) and make sure that

the indicator light of the switch lights up. Lighting is switched on using the orange switch. The model

equipped with a refrigerated cupboard has a separate main switch (green).

When the main switch is turned on, the internal temperature of the appliance is shown on the tempera-

ture display (control unit). The compressor starts operating after a short time delay.

In case you have problems with taking the appliance into use, contact an authorized service workshop.

5.7. Temperature adjustment

The temperature of the appliance is factory set to the value appropriate for each unit. This value should

be altered on careful consideration only. Adjusting the temperature too low (below +4ºC) may lead to

rapid freezing up of the evaporator and to continuous operation of the compressor.

The appliance is ﬁtted with an electronic control unit for temperature and defrosting. The temperature

display panel and the operating switches are located on the upper section of the refrigeration unit.

6. Thermostat operation

6.1. Thermostat, cold display

Starts manual defrost

Increases the value / scrolls the parameter list in programming mode.

1. Shows the set point

2. Selects parameter or saves the value in programming mode

Symbols

Keys combination

To lock or unlock the keyboard

To enter programming mode

To return to room temperature display

Decreases the value / scrolls the parameter list in programming mode.

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