Metos 72/02CG Operating instructions

GAS RANGES

700 - Restaurant Series

TYPE: 72/02CG, 72/02TGC, 74/02CG, 74/02TGC, 76/02CG, 76/02TGC, 74/02CGG, 74/

02CGE, 76/02CGG, 76/02CGGE, 76/02CGE, 76/02CGEE, 76/02CGFL

Installation and Operation Manual

S/N: Rev.: 1.0

30.7.2003 Rev. 1.0

Dear Customer,

Congratulations on deciding to choose a Metos appliance for your kitchen activities. You

made an excellent choice. We will do our best to make you a satisfied Metos customer

like thousands of customers we have around the world.

Please read this manual carefully. You will learn correct, safe and efficient working meth-

ods in order to get the best possible benefit from the appliance. The instructions and hints

in this manual will give you a quick and easy start, and you will soon note how nice it is

to use the Metos equipment.

All rights are reserved for technical changes.

You will find the main technical data on the rating plate fixed to the equipment. When you

need service or technical help, please let us know the serial number shown on the rating

plate. This will make it easier to provide you with correct service.

For your convenience, space is provided below for you to record your local Metos service

contact information.

METOS TEAM

Metos service phone number:...............................................................................................

Contact person:....................................................................................................................

30.7.2003 Rev. 1.0

30.7.2003 Rev.

1. General information ..................................................................................... 1

1.1 Symbols used in the manual .......................................................................................... 1

1.2 Symbols used on the appliance ...................................................................................... 1

1.3 Checking correspondence between the appliance and the manual ................................ 2

2. Safety .............................................................................................................. 3

2.1 Using the appliance safely ............................................................................................. 3

2.2 Safety instructions in case of malfunction ..................................................................... 3

2.3 Additional prohibitions (hazardous procedures) ........................................................... 3

2.4 Disposing of the appliance ............................................................................................ 3

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

3.1 Application of the appliance .......................................................................................... 5

3.1.1 Prohibited use ........................................................................................................ 5

3.2 Construction .................................................................................................................. 5

3.2.1 Construction features ............................................................................................. 5

3.2.2 Cooking surfaces .................................................................................................... 6

3.2.3 Gas ovens .............................................................................................................. 6

3.2.4 Electric ovens ......................................................................................................... 7

3.2.5 Hot cupboard .......................................................................................................... 7

4. Operating instructions ................................................................................. 9

4.1 Before using the appliance ............................................................................................ 9

4.1.1 Preparing the appliance for use .............................................................................. 9

4.2 Using the appliance ..................................................................................................... 10

4.2.1 Operating controls ............................................................................................... 10

4.2.2 Turning the open burners on and off ................................................................... 11

4.2.3 Turning on the gas oven ....................................................................................... 12

4.2.4 Turning on the electric oven ................................................................................ 13

4.2.5 Turning on the hot cupboard ................................................................................ 14

4.2.6 Safety thermostat ................................................................................................. 14

4.2.7 Preheating ............................................................................................................ 14

4.3 After-use care .............................................................................................................. 15

4.3.1 Cleaning ............................................................................................................... 15

4.3.2 Idle period ............................................................................................................ 16

4.3.3 Periodic maintenance ........................................................................................... 16

30.7.2003 Rev.

5. Installation ................................................................................................... 17

5.1 General information ..................................................................................................... 17

5.1.1 Regulatory installation conditions ....................................................................... 17

5.2 Exhausting fumes ........................................................................................................ 17

5.3 Possible environmental interference ............................................................................ 18

5.4 Preparing for installation ............................................................................................. 18

5.5 Storage ......................................................................................................................... 18

5.6 Transporting the appliance .......................................................................................... 18

5.7 Unpacking the appliance ............................................................................................. 18

5.8 Disposing of packaging materials ............................................................................... 18

5.9 Positioning the appliance ............................................................................................. 19

5.10 Electrical connections (versions with electric oven and/or hot

cupboard) ........................................................................................................................ 19

5.10.1 General information ........................................................................................... 19

5.10.2 Connecting a type "Y" power cord to the appliance’s terminal block ............... 20

5.11 Gas supply connection ............................................................................................... 22

5.12 Checking gas supply pressure after installation ....................................................... 24

5.13 Gas technical specifications ...................................................................................... 25

5.14 Checking operation .................................................................................................... 27

5.15 Staff training .............................................................................................................. 27

5.16 Rating plate ................................................................................................................ 27

6. Adjustment instructions ............................................................................. 29

6.1 Replacing open burner nozzles .................................................................................... 30

6.2 Replacing the nozzle of open burner pilot flames ....................................................... 32

6.3 Replacing oven burner nozzles .................................................................................... 33

6.4 Replacing the nozzle of the oven pilot flame .............................................................. 35

6.5 Adjusting minimum output .......................................................................................... 36

6.6 Functional check .......................................................................................................... 37

7. Troubleshooting .......................................................................................... 39

9. Technical specifications .............................................................................. 69

2.9.2003 Rev. 1.0

General information

1

1. General information

Read the instructions in this manual carefully, as they contain important information on

how to install, use and service the appliance safely, properly, and effectively.

Keep this manual in a safe place so that it can be used as reference by other operators of

the appliance.

This appliance should be installed following the instructions provided by the manufactur-

er and in compliance with all applicable local regulations. This appliance should be con-

nected to the power and gas supply by qualified personnel only.

All personnel in charge of using this appliance should be specifically trained in its opera-

tion.

In the event of failure or malfunction, switch off the appliance. The periodic functional

checks requested in this manual should be carried out according to the instructions. Have

the appliance serviced by a technically qualified person duly authorized by the manufac-

turer that uses genuine spare parts.

Failure to comply with the above may jeopardise the appliance’s safety.

1.1 Symbols used in the manual

This symbol informs about a situation where a safety risk could be imminent. The instruc-

tions provided are mandatory in order to prevent injury.

This symbol informs about the right way to act in order to prevent bad results, damage to

the appliance, or hazardous situations.

This symbol informs about tips and hints that help the user get the best performance out

of the appliance.

This symbol informs about a function that should be taken into account for self-control

purposes.

1.2 Symbols used on the appliance

This symbol on a part warns the user that there are electrical terminals behind it. There-

fore, this part should be removed by qualified personnel only.

2.9.2003 Rev. 1.0

General information

2

1.3 Checking correspondence between the appliance and the manual

The rating plate of the appliance shows its serial number. If the manuals are missing, you

may order new ones from the manufacturer or your local representative. When ordering

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

2.9.2003 Rev. 1.0

Safety

3

2. Safety

2.1 Using the appliance safely

Being an appliance designed only for professional use, it should be operated by qualified

personnel exclusively. Never leave the appliance unattended while it is on.

Do not move the appliance while hot.

2.2 Safety instructions in case of malfunction

If the appliance will remain idle for some time or in the event of a failure, abnormal op-

eration, etc., turn off the shutoff valve upstream of the appliance and disconnect it from

power supply. Call the service.

2.3 Additional prohibitions (hazardous procedures)

Never tamper with the seals of the adjusting screws located on the gas valves.

2.4 Disposing of the appliance

This appliance has been manufactured using recyclable raw materials and does not con-

tain any hazardous or toxic substances. To dispose of the appliance and all its packaging

materials, strictly follow the local regulations in force in the place where it is installed.

Packaging materials should be divided according to the type and delivered to a specific

collection site. Ensure compliance with environmental protection regulations.

2.9.2003 Rev. 1.0

Safety

4

2.9.2003 Rev. 1.0

Functional description

5

3. Functional description

3.1 Application of the appliance

The appliance is designed for use in the gastronomy and confectionery industries only.

3.1.1 Prohibited use

The manufacturer cannot be held liable for any faults caused by defective installation or

inappropriate use of the appliance. In such cases, the warranty shall be null and void.

3.2 Construction

3.2.1 Construction features

Supporting structure made of galvanized steel.

Exterior finish and height-adjustable feet are stainless steel type AISI 18/10.

Control panels are conveniently shaped and have controls slanted towards the operator.

2.9.2003 Rev. 1.0

Functional description

6

3.2.2 Cooking surfaces

Fig. 1

1. Burner rated 3.5 kW (open burners)

2. Burner rated 5.6 kW (open burners)

3. Burner rated 7.9 kW (oven)

• Unit with 2, 4 or 6 stabilised-flame gas burners made of nickel-plated cast iron and

controlled by pilot flames;

• burner type:double-crown burner rated 3.5 kW (item 1 in Fig. 1) double-crown

burner rated 5.6 kW (item 2 in Fig. 1);

• high-to-low output control (Fig. 3 further below);

• safety valves fitted with thermocouple ensure that gas flow will be immediately

shut off in the event that a burner is extinguished accidentally or a failure occurs;

• two-burner acid-resistant black enamelled cast-iron grates;

• stainless steel drip pans.

3.2.3 Gas ovens

• Stainless steel GN 2/1 static oven with temperature adjustable from 50°C to 300°C

(122°F to 572°F);

• tubular steel burner rated 7.9 kW (item 3 in Fig. 1) with self-stabilising flame;

• piezoelectric ignition of pilot flame;

• safety valve fitted with thermocouple ensures that gas flow will be immediately

shut off in the event that a burner is extinguished accidentally or a failure occurs;

• wire shelf support with two loading positions and a device to prevent tipping;

• removable, high-radiance, ribbed cast-iron bottom plates;

• silicone rubber oven door gasket, easily replaceable.

2.9.2003 Rev. 1.0

Functional description

7

3.2.4 Electric ovens

• Stainless steel GN 2/1 static oven with temperature adjustable from 50°C to 300°C

(122°F to 572°F);

• two sheathed heating units (top and bottom) separately adjustable through a selec-

tor switch and controlled by a single thermostat;

• safety thermostat to prevent overheating;

• knobs with watertight gasket;

• wire shelf support with two loading positions and a device to prevent tipping;

• removable stainless steel bottom plate;

• silicone rubber oven door gasket, easily replaceable.

3.2.5 Hot cupboard

• Heating provided by a sheathed heating element placed at the bottom of the cup-

board;

• hot cupboard temperature adjustable from 50°C to 90°C (122°F to 194°F);

• perforated stainless middle shelf, removable and adjustable to two heights;

• interior size GN 2/1.

2.9.2003 Rev. 1.0

Functional description

8

2.9.2003 Rev. 1.0

Operating instructions

9

4. Operating instructions

4.1 Before using the appliance

4.1.1 Preparing the appliance for use

Before cooking food for the first time, we recommend cleaning the appliance thoroughly,

and especially the oven cooking chamber. Remove all packaging materials and adhesive

films from the appliance very carefully. Before cleaning the stainless steel parts, make

sure that the detergent you intend to use does not contain any abrasive substances and that

it is suitable for stainless steel surfaces. Wipe the appliance dry with a clean cloth.

Never use water jets to clean the appliance.

2.9.2003 Rev. 1.0

Operating instructions

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4.2 Using the appliance

4.2.1 Operating controls

By way of example, below are represented two of the most comprehensive appliances in

this family. Refer to the "Installation and connection drawings" at the end of this manual

to see a precise graphic representation of your specific appliance.

Fig. 2

6. Open burner knob

7. Hot cupboard knob

8. Piezoelectric ignition

9. Gas oven knob

10. Electric oven knobs

2.9.2003 Rev. 1.0

Operating instructions

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4.2.2 Turning the open burners on and off

• To light the pilot flame, press the knob and turn it anti-clockwise to the position

shown as item 14 in Fig. 3;

• hold down the knob and at the same time place a flame next to the pilot burner;

• after lighting the pilot flame, hold down the knob for 15 more seconds to allow the

thermocouple to heat. If the pilot flame goes out when you release the knob, repeat

the operation;

• burner output can be controlled within a range between positions shown as item 15

and item 16 in Fig. 3;

• to turn off the main burner, turn the knob clockwise to the position shown as item

14;

• to turn off the pilot flame as well, turn the knob clockwise to the "OFF" position

(item 13).

Fig. 3

13. "OFF" position

14. "PILOT FLAME LIGHTING" position

15. "HIGH" position

16. "LOW" position

2.9.2003 Rev. 1.0

Operating instructions

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4.2.3 Turning on the gas oven

• To light the gas oven pilot flame, press and turn the knob anti-clockwise to the po-

sition shown as item 20 in Fig. 4;

• hold down the knob and at the same time push the ignition button (see item 8 in

Fig. 2 further above);

• check pilot flame lighting through the viewing hole located in the bottom plate of

the cooking chamber;

• after lighting the pilot flame, hold down the knob for 15 more seconds in order for

the thermocouple to heat. If the pilot flame goes out when you release the knob,

repeat the operation;

• oven temperature can be controlled within a range between positions shown as

item 21 and item 22 in Fig. 4 (80-300°C/176-572°F and all values in between);

• to turn off the main burner, turn the knob clockwise to the position shown as item

20;

• to turn off the pilot flame as well, turn the knob clockwise to the "OFF" position

(item 19).

An unpleasant smell the very first time it is operated can be considered as completely nor-

mal. In fact, this is due to the overheating of insulating materials and residues of oil used

during the metal working process. The first time you turn the oven on, don’t place any

food in the cooking chamber and set the temperature to 300°C (482°F) until the smell dis-

appears.

Fig. 4

19. "OFF" position

20. "PILOT FLAME LIGHTING" position

21. 80°C (176°F) position (lowest temperature)

22. 300°C (572°F) position (highest temperature)

Below are the average temperatures at the centre of chamber of the oven corresponding

to each knob position:

1. 80°C (176°F)

2. 110°C (230°F)

3. 140°C (284°F)

4. 180°C (356°F)

5. 220°C (428°F)

6. 260°C (500°F)

2.9.2003 Rev. 1.0

Operating instructions

13

7. 300°C (572°F)

4.2.4 Turning on the electric oven

Select the required heating direction using the knob shown as item 23 in Fig. 5. Set the

cooking chamber temperature by turning the operating thermostat knob clockwise (item

24). The heating elements will start operating and both the power indicator light (item 25)

and the oven operation indicator light (item 26) will light up. The operation indicator light

will go out as soon as the set temperature has been reached. Oven temperature can be set

from 50°C (122°F) to 300°C (572°F) and to any value in between.

An unpleasant smell the very first time it is operated can be considered as completely nor-

mal. In fact, this is due to the overheating of insulating materials and residues of oil used

during the metal working process. The first time you turn it on, don’t place any food in

the cooking chamber and set the temperature to 300°C (482°F) until the smell disappears.

Fig. 5

7. Hot cupboard thermostat knob

23. Knob to select oven heating direction

24. Electric oven thermostat knob

25. Power indicator light

26. Electric oven operation indicator light

27. Hot cupboard operation indicator light

2.9.2003 Rev. 1.0

Operating instructions

14

4.2.5 Turning on the hot cupboard

Select the desired temperature using the hot cupboard knob (item 7 in Fig. 5). The heating

element will start operating and the operation indicator light (item 27 in Fig. 5) will light

up. This indicator light will go out as soon as the set temperature has been reached. Hot

cupboard temperature can be set from 30°C (86°F) to 90°C (194°F) and to any value in

between.

An unpleasant smell the very first time it is operated can be considered as completely nor-

mal. In fact, this is due to the overheating of insulating materials and residues of oil used

during the metal working process. The first time you turn it on, don’t place any food in

the cooking chamber and set the temperature to 90°C (194°F) until the smell disappears.

4.2.6 Safety thermostat

This appliance is equipped with a safety thermostat. Should the temperature inside the

cooking chamber exceed a limit value, all oven functions will be disabled and only the

power indicator light will remain on (item 25 in Fig. 5 further above). This feature is a

safety precaution which protects the appliance in the event of a failure or use against the

instructions. If the safety thermostat trips, disconnect the appliance from power supply

and call the service.

4.2.7 Preheating

Preheating the chambers will ensure excellent cooking results. To do so, make sure that

the door is closed and set cooking chamber temperature to a value that is about 25-50°C

(45-90°F) higher than the required cooking temperature. Considering the decrease in tem-

perature that occurs in the chamber when you open the oven door, you should wait until

the set temperature has stabilised (the "heating on" indicator light goes out) before placing

any products into the oven and setting the cooking temperature. If you need to cook food-

stuffs that require high temperatures, leave the pans or wire racks in the oven while pre-

heating it.

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Metos 72/02CG Operating instructions

Metos 72/02CG Operating instructions

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