Metos 900 Series User manual

SOLID TOPS
900 Series
TYPE: 94/04 TCTG, 96/04 TCTGDX, 96/04 TCTGSX, 98/04 TCTG, 94/04 CTGG,
94/04 CTGE, 94/04 CTG, 96/04 CTGDX, 96/04 CTGSX, 96/04 CTGGDX, 96/04 CTGGSX,
96/04 CTGEDX, 96/04 CTGESX, 98/04 CTG, 98/04 CTGG, 98/04 CTGE
User manual
S/N: Valid from:03. 09. 2004 Rev.: 1.0

3.9.2004 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 willfind the main technical data on therating 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:....................................................................................................................

3.9.2004 Rev. 1.0

3.9.2004 Rev.
1. General information ..................................................................................... 1
1.1 Symbols used in the manual .......................................................................................... 1
1.2 Symbols used on the appliance ...................................................................................... 2
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 .................................................................................. 4
3.1 Application of the appliance .......................................................................................... 4
3.1.1 Unintended usage ................................................................................................... 4
3.2 Construction .................................................................................................................. 4
3.2.1 Construction features ............................................................................................. 4
3.2.2 Cooking tops .......................................................................................................... 5
3.2.3 Gas ovens ............................................................................................................... 6
3.2.4 Electric ovens ......................................................................................................... 6
4. Operating instructions ................................................................................. 7
4.1 Before using the appliance ............................................................................................ 7
4.1.1 Preparing the appliance for use .............................................................................. 7
4.2 Using the appliance ....................................................................................................... 8
4.2.1 Operating controls .................................................................................................. 8
4.2.2 Switching the open fire burners on and off ............................................................ 9
4.2.3 Lighting the gas oven ........................................................................................... 10
4.2.4 Lighting the electrical oven ................................................................................. 11
4.2.5 Safety thermostat ................................................................................................. 12
4.2.6 Preheating ............................................................................................................ 12
4.3 After-use care .............................................................................................................. 12
4.3.1 Cleaning ............................................................................................................... 12
4.3.2 Idle period ............................................................................................................ 13
4.3.3 Periodic maintenance ........................................................................................... 13
5. Installation ................................................................................................... 14
5.1 General information ..................................................................................................... 14
5.1.1 Regulatory installation conditions ....................................................................... 14
5.2 Exhausting fumes ........................................................................................................ 14
5.3 Possible environmental interference ............................................................................ 15

3.9.2004 Rev.
5.4 Preparing for installation ............................................................................................. 15
5.5 Storage ......................................................................................................................... 15
5.6 Transporting the appliance .......................................................................................... 15
5.7 Unpacking the appliance ............................................................................................. 15
5.8 Disposing of packaging materials ............................................................................... 15
5.9 Positioning the appliance ............................................................................................. 16
5.10 Electrical connections (versions with electric oven) ................................................. 16
5.10.1 General information ........................................................................................... 16
5.10.2 Connecting a type "Y" power lead to the appliance’s terminal block [models with
electrical oven] .............................................................................................................. 17
5.11 Gas supply connection ............................................................................................... 19
5.12 Changing gas inlet connection from the right to the left (optional) .......................... 20
5.13 Checking gas supply pressure after installation ........................................................ 21
5.13.1 Open fires ........................................................................................................... 21
5.13.2 Solid top ............................................................................................................. 22
5.14 Gas technical specifications ...................................................................................... 23
5.15 Checking operation .................................................................................................... 25
5.16 Staff training .............................................................................................................. 25
5.17 Rating plate ................................................................................................................ 25
6. Adjustment instructions ............................................................................. 26
6.1 Replacing the open fire burner nozzles ....................................................................... 26
6.2 Replacing the open fire pilot flame nozzle .................................................................. 28
6.3 Replacing the oven burner nozzles [models with oven] .............................................. 29
6.4 Replacing the gas oven pilot flame nozzle ................................................................. 31
6.5 Replacing the solid top pilot flame burner nozzle ....................................................... 32
6.6 Replacing the solid top burner nozzle ......................................................................... 33
6.7 Adjusting the minimum setting ................................................................................... 34
6.8 Functional check .......................................................................................................... 36
7. Troubleshooting .......................................................................................... 37
9. Technical specifications .............................................................................. 63

3.9.2004 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 symbolinforms 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.

3.9.2004 Rev. 1.0
General information
2
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.
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.

3.9.2004 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.

3.9.2004 Rev. 1.0
Functional description
4
3. Functional description
3.1 Application of the appliance
The appliance is designed for cookery use only.
The appliance usage, for constructive specifications giving different temperatures to hot
plate between central area and marginal area, allows to cook food very quickly placing the
containers in the central area and to finish the cooking or storing hot food placing them
on the marginal area of hot plate.
3.1.1 Unintended usage
These cookers are not designed for cooking or frying food on the hot plate.
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.
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.

3.9.2004 Rev. 1.0
Functional description
5
3.2.2 Cooking tops
Fig. 1 1. Burner of 13 kW (solid top)
2. Burners of 3.5 kW (open fires)
3. Burners of 7 kW (open fires)
• Plate with burner in steel controlled by drain valve with safety thermocouple and
piezoelectric ignition of main burner;
• adjustable temperature on the plate from 50° to 500°C (122°-932°F);
• units with two, four, or eight uniform flame gas burners, made in nickel plated
cast-iron and controlled by a pilot flame;
• type of burners: double flame crown with specifications as in Fig.1);
• valves fitted with safety thermocouples that ensure the immediate stop of the gas
inflow in case of defects or when the burner is switched off accidentally;
• racks in black enamelled acid-resistant cast iron;
• drop drain food-pans in stainless steel.

3.9.2004 Rev. 1.0
Functional description
6
3.2.3 Gas ovens
• Stainless steel GN 2/1 static oven with temperature adjustable from 80°C to335°C
(176°F to 635°F);
• tubular steel burner rated 8.5 kW 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 plate;
3.2.4 Electric ovens
• Stainless steel GN 2/1 static oven with temperature adjustable from 60°C to300°C
(140°F to 572°F) with power of 6 kW;
• 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 three loading positions and a device to prevent tipping;
• removable, high-radiance, ribbed cast-iron bottom plate.

3.9.2004 Rev. 1.0
Operating instructions
7
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 detergentyou intend to use does notcontain 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.

3.9.2004 Rev. 1.0
Operating instructions
8
4.2 Using the appliance
4.2.1 Operating controls
By way of example, two of the most complete appliance of this type are described below.
If necessary, see “Installation and Connection Drawing” at the end of this manual to
view a graphic representation specific of your appliance.
Fig. 2 1. Open fire knob
2. Gas oven thermostat knob
3. Solid top piezoelectric ignition
4. Solid top knob
5. Gas oven piezoelectric ignition
6. Electrical oven thermostat knob
7. Electrical oven heating direction knob

3.9.2004 Rev. 1.0
Operating instructions
9
4.2.2 Switching the open fire burners on and off
• To light the pilot flame, press and turn the knob in a counterclockwise direction
(item 2 in Fig. 3);
• hold the knob down and at the same time move a flame closer to the pilot (utiliz-
zare l’accensione piezoelettrica per il tuttapiastra);
• after lighting the pilot flame, hold theknob down for about 15 seconds so the ther-
mocouple can be heated. Repeat the operation if, after releasing the knob,the pilot
flame goes out;
• burner power control range is between item 3 and item 4 in Fig. 3;
• to switch off the main burner, turn the knob in a clockwise direction on item 2;
• to switch off also the pilot flame, turn the knob in a clockwise direction on item 1.
Fig. 3 1. OFF position
2. PILOT FLAME IGNITION position
3. MAXIMUM position
4. MINIMUM position

3.9.2004 Rev. 1.0
Operating instructions
10
4.2.3 Lighting the gas oven
• To light the oven pilot flame, press and turn the knob in a counterclockwise direc-
tion (item 2 in Fig. 4;
• press and hold down the knob and at the same time push the ignition button (see
item 3 in fig.2 further above) under the knob;
• check the pilot ignition through the inspection hole on the bottom of the cooking
chamber;
• after lighting the pilot flame, hold theknob down for about 15 seconds so the ther-
mocouple can be heated. Repeat the operation if, after releasing the knob,the pilot
flame goes out;
• oven temperature control range is between item 3 and item 4 in Fig. 4 (80°-300°C
and intermediate values);
• to switch off the main burner, turn the knob in a clockwise direction on item 2;
• to switch off also the pilot flame, turn the knob in a clockwise direction on item 1.
A bad smell during thefirst ignition is considered within the norm and it is due to the over-
heating of the oil residues used for the metal processing and to insulating materials. Dur-
ing the first ignition, without putting food into the chamber, set the oven to a temperature
of 300°C until the smell disappear.
Fig. 4 1. OFF position
2. PILOT FLAME IGNITION position
3. 80°C position (minimum temperature)
4. 300°C position (maximum temperature)
The following list shows the average temperature in the centre of the oven chamber cor-
responding to each knob position:
1. 80° C (176° F)
2. 110° C (230° F)
3. 120° C (248° F)
4. 185° C (365° F)
5. 245° C (473° F)
6. 305° C (581° F)
7. 335° C (635° F)

3.9.2004 Rev. 1.0
Operating instructions
11
4.2.4 Lighting the electrical oven
Choose the heating direction on the knob indicated as item 3 in Fig. 5. Set the cooking
chamber temperature by turning the oven operating thermostat knob in clockwise direc-
tion (item 4 in Fig. 5), the heating elements start to operate and the line pilot lamp (item
2 in Fig. 5) lights up together with the oven indicator lamp (item 1 in Fig. 5). When the
selected temperature has been reached, the indicator lamp turns off. The oven temperature
can be set between 60° (122°F) and 300°C (572°F) and to intermediate values.
A bad smell during thefirst ignition is considered within the norm and it is due to the over-
heating of the oil residues used for the metal processing and to insulating materials. Dur-
ing the first ignition, without putting food into the chamber, set the oven to a temperature
of 300°C until the smell disappear.
Fig. 5 1. Electrical oven indicator lamp
2. Line pilot lamp
3. Heating direction knob
4. Electrical oven thermostat knob
3a. OFF heating position
3b. Heating direction of both heating elements (top and bottom)
3c. Heating direction of the bottom heating element
3d. Heating direction of the top heating element
4a. OFF position
4b. 60°C position (minimum temperature)
4c. 300°C position (maximum temperature)

3.9.2004 Rev. 1.0
Operating instructions
12
4.2.5 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 2 in further above). This feature is a safety
precaution which protects the appliance in the event of a failure or use against the instruc-
tions. If the safety thermostat trips, disconnect the appliance from power supply and call
the service.
4.2.6 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 thedecrease in tem-
perature that occurs in the chamber when you open the oven door, you should wait until
the set temperaturehas stabilised (the "heating on" indicatorlight goesout) 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.
4.3 After-use care
4.3.1 Cleaning
Before cleaning, turn off the appliance, shut off gas supply upstream of it and disconnect
power supply using the safety switch located outside the appliance.
General information
The main causes for stainless steel wear or corrosion are:
• using abrasive or acid detergents, especially chlorine-based products such as hy-
drochloric acid or sodium hypochlorite (bleach). Therefore, before buying a deter-
gent product, make sure it does not corrode stainless steel (see also paragraph
"Routine cleaning" below);
• stagnation of ferrous deposits (such as those created by rust dissolved in the water
flowing through the piping, especially after the appliance has remained idle for
some time). Therefore,avoidsuchstagnation; donot use wire woolpads toremove
the most stubborn food residues. Use, rather, pads or spatulas made of stainless
steel or softer, non-ferrous materials;
• stagnation of substances having acid components such as vinegar, lemon juice,
sauces, salt, etc. Therefore, prevent prolonged contact of these substances with the
stainless steel parts of the appliance. The evaporation of saline solutions over the
surfaces of the appliance is particularly harmful to them.

3.9.2004 Rev. 1.0
Operating instructions
13
Routine cleaning
Cleaning the appliance thoroughly every day will keep it in perfect condition and increase
its lifetime. Clean the appliance with a damp cloth using water and soap or detergents,
provided that they are not acid or abrasive as discussed further above. Such detergents
should not even be used to wash the floor near the appliance, as their fumes may deposit
on the steel surfaces and damage them. If the appliance is very dirty, use a synthetic
Scotch-Brite™ type sponge. Rinse it off with clean water and wipe it dry with a clean
cloth. Do not rub the appliance with steel wool pads as they could leave rust stains. For
the same reason, avoid touching the appliance with ferrous objects.
Never use direct water jets to clean the appliance because this could result in water enter-
ing into it and damaging it.
Stains and abrasions on the steel surface
Scratches and dark stains may be smoothed or removed using stainless steel wool pads or
synthetic abrasive sponges, which should always be rubbed in the same direction as the
satin finish.
Rust
Should you need to eliminate ruststains, contact manufacturers of industrial detergents to
find a detergent that can remove such stains. Industrial descaling products can also be
used to that end. After rubbing off the stain and rinsing with clean water, an alkaline de-
tergent may be required to neutralise any acid compounds left on the surface.
4.3.2 Idle period
If the appliance will remain idle for a certain period of time, clean it and wipe it dry first,
and then apply a film of a suitable product (such as vaseline oil spray or similar products)
to protect it. Shut off gas and power supply upstream of the appliance.
To avoid the appearance of corrosion spots, make sure that any salt residues left on the
internal and external walls are carefully removed.
4.3.3 Periodic maintenance
Only qualified personnel are allowed to carry out service and maintenance operations.
The following maintenance operations should be performed at least once a year:
• checking for proper operation of all control and safety devices;
• checking burner combustion, i.e.:
1. ignition;
2. combustion safety;
3. checking for proper operationthroughout the entire HIGH-to-LOW control
range.
We recommend signing a service agreement providing for at least one check-up a year.

3.9.2004 Rev. 1.0
Installation
14
5. Installation
5.1 General information
The manufacturer cannot be held liable for any damage to property or injury to persons
deriving from installation errors or from inappropriate use of the appliance and is not re-
sponsible for any faults caused by defective installation. In such cases, the warranty shall
be null and void.
The appliance should be installed, serviced, connected to the gas system, to the power
supply and started up only by an authorized installer, who must comply with the safety
regulations in force in the place where the appliance is being installed.
5.1.1 Regulatory installation conditions
For your information, we remind you that all appliances installed in public assembly
buildings must meet all the requirements listed below. The appliance should be both in-
stalled and serviced in accordance with all applicable regulations and standards in force,
namely:
• safety regulations on fire hazard and panic in public assembly buildings.
• general regulations applicable to all appliances;
• systems burning combustible gas and liquefied hydrocarbons.
Then, follow the specific regulations according to the type of gas being used.
• heating, ventilation, refrigeration, air conditioning, and generation of steam and
hot water for sanitary use;
• installation of foodservice cooking appliances;
• specific regulations applicable to each type ofpublic assembly building (hospitals,
shops, etc.).
5.2 Exhausting fumes
The appliance should be installed in a well-ventilated area, if possible under a vent hood,
in compliance with all applicable regulations in force. This will ensure that all burnt gases
produced during the combustion process are completely exhausted. The amount of air re-
quired for combustion is shown in the "Technical Specifications Table" at the end of this
manual, under "Air required for combustion".
In compliance with applicable installation regulations in force, our appliances belong to
the type shown under "Construction type" in the "Technical specifications table".