SOLID TOPS. Installation and Operation Manual

Transcription

1 SOLID TOPS Series TYPE: 74/02CTG, 74/02TCTG, 74/02CTGG, 74/02+2CTGG, 74/02CTGE, 76/02CTG, 76/02CTGG, 76/02+4CTGG, 76/02TCTGG, 76/02CTGGE Installation and Operation Manual S/N: Rev.: 1.0

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3 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 methods 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:...

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5 Rev. 1. General Symbols used in the manual Symbols used on the appliance Checking correspondence between the appliance and the manual Safety Using the appliance safely Safety instructions in case of malfunction Additional prohibitions (hazardous procedures) Disposing of the appliance Functional description Intended use of the appliance Prohibited use Construction Construction features Cooking surfaces Gas ovens Electric ovens Hot cupboard Operating instructions Before using the appliance Preparing the appliance for use Using the appliance Operating controls Turning the open burners on and off Turning the solid top on and off Turning on the gas oven Turning on the electric oven Turning on the hot cupboard Safety thermostat Preheating After-use care Cleaning Idle period Periodic maintenance... 16

6 Rev. 5. Installation General information Regulatory installation conditions Exhausting fumes Possible environmental interference Preparing for installation Storage Transporting the appliance Unpacking the appliance Disposing of packaging materials Positioning the appliance Electrical connections (versions with electric oven and/or hot cupboard) General information Connecting a type "Y" power cord to the appliance s terminal block Gas supply connection Changing gas inlet connection from the right to the left (optional) Checking the supply pressure of the gas after installation Initial phases only valid for models 76/02CTG, 76/02CTGG, 76/02TCTG, 76/02+4CTGG and 76/02CTGGE Initial phases only valid for models 74/02CTG, 74/02TCTG, 74/02CTGG, 74/02+2CTGG and 74/02CTGE Following phases valid for all models Gas technical specifications Checking operation Staff training Rating plate Adjustment instructions Replacing open burner nozzles Replacing the nozzle of open burner pilot flames Replacing oven burner nozzles Replacing the nozzle of the solid top burner Replacing the nozzle of the oven or solid top pilot flame Adjusting minimum output Functional check... 41

7 Rev. 7. Troubleshooting Technical specifications... 81

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9 General 1. General 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 manufacturer and in compliance with all applicable local regulations. This appliance should be connected to the power and gas supply by qualified personnel only. All personnel in charge of using this appliance should be specifically trained in its operation. 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 manufacturer 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 instructions 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. Therefore, this part should be removed by qualified personnel only. 1

10 General 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

11 Safety 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 operation, 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) 2.4 Disposing of the appliance Never tamper with the seals of the adjusting screws located on the gas valves. This appliance has been manufactured using recyclable raw materials and does not contain 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

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13 Functional description 3. Functional description 3.1 Intended use of the appliance The appliance is designed for use in the gastronomy and confectionery industries only Prohibited use 3.2 Construction 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 Construction features Supporting structure made of galvanized steel. Exterior finish and height-adjustable feet are stainless steel type AISI 18/10. Solid top plate and central ring are made of a special smoothed alloy (creusabro). Control panels are conveniently shaped and have controls slanted towards the operator. 5

14 Functional description Cooking surfaces Fig Burner rated 3.5 kw (open burners) 2. Burner rated 5.6 kw (open burners) 3. Burner rated 7.9 kw (oven) 4. Burner rated 12 kw (solid top) 5. Burner rated 5.6 kw (mini solid top) Plate with steel burner controlled by a valve equipped with safety thermocouple and piezoelectric pilot flame ignition ; temperature on the solid top adjustable from 50 C to 500 C (122 F to 932 F); unit with 2 or 4 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); valves equipped with safety thermocouples to ensure that gas flow will be immediately shut off in case of failures or if the burner is accidentally extinguished; two-burner acid-resistant black enamelled cast-iron grates; stainless steel drip pans Gas ovens Stainless steel GN 2/1 static oven with temperature adjustable from 80 C to 300 C (176 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. 6

15 Functional description 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 selector 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 Hot cupboard Heating provided by a sheathed heating element placed at the bottom of the cupboard; 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. 7

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17 Operating instructions 4. Operating instructions 4.1 Before using the appliance 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. 9

18 Operating instructions 4.2 Using the appliance 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 Ignition for solid top 2. Solid top knob 3. Hole to check solid top pilot flame ignition 4. Electric oven selector knob 5. Electric oven thermostat knob 6. Open burner knob 7. Hot cupboard knob 8. Ignition for gas oven 9. Gas oven knob 10

19 Operating instructions 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 2 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 3 and item 4 in Fig. 3; to turn off the main burner, turn the knob clockwise to the position shown as item 2 in Fig. 3; to turn off the pilot flame as well, turn the knob clockwise to the OFF position as item 1, Fig. 3. Fig "OFF" position 2. "PILOT FLAME LIGHTING" position 3. "HIGH" position 4. "LOW" position Turning the solid top on and off To light the pilot flame, press the knob and turn it anti-clockwise to the position shown as item 2 in Fig. 3; hold down the knob and at the same time push the ignition button (item 1 in Fig. 2); check pilot flame ignition through the inspection hole provided in the front panel of the appliance; 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 3 and item 4 in Fig. 3 (range HIGH-LOW); to turn off the main burner, turn the knob clockwise to the position shown as item 2 in Fig. 3; to turn off the pilot flame as well, turn the knob clockwise to the OFF position as item 1in Fig

20 Operating instructions Turning on the gas oven To light the gas oven pilot flame, press and turn the knob anti-clockwise to the position shown as item 2 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 3 and item 4 in Fig. 4 ( C/ F and all values in between); to turn off the main burner, turn the knob clockwise to the position shown as item 2 in Fig. 4; to turn off the pilot flame as well, turn the knob clockwise to the OFF position as item 1 in Fig. 4. An unpleasant smell the very first time it is operated can be considered as completely normal. 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 (572 F) until the smell disappears. Fig "OFF" position 2. "PILOT FLAME LIGHTING" position C (176 F) position (lowest temperature) C (572 F) position (highest temperature) Below are the average temperatures at the centre of chamber of the oven corresponding to each knob position: C (176 F) C (230 F) C (284 F) C (356 F) C (428 F) C (500 F) C (572 F) 12

21 Operating instructions Turning on the electric oven Select the required heating direction using the knob shown as item 2 in Fig. 5. Set the cooking chamber temperature by turning the operating thermostat knob clockwise (item 3). The heating elements will start operating and both the power indicator light (item 4) and the oven operation indicator light (item 5) 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 normal. 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 (572 F) until the smell disappears. Fig Hot cupboard thermostat knob 2. Knob to select oven heating direction 3. Electric oven thermostat knob 4. Power indicator light 5. Electric oven operation indicator light 6. Hot cupboard operation indicator light Turning on the hot cupboard Select the desired temperature using the hot cupboard knob (item 1 in Fig. 5). The heating element will start operating and the operation indicator light (item 6 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 normal. 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. 13

22 Operating instructions 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 4 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 Preheating 4.3 After-use care 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 C (45-90 F) higher than the required cooking temperature. Considering the decrease in temperature 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 foodstuffs that require high temperatures, leave the pans or wire racks in the oven while preheating it 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 hydrochloric acid or sodium hypochlorite (bleach). Therefore, before buying a detergent 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, avoid such stagnation; do not use wire wool pads to remove 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. 14

23 Operating instructions 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 entering 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 rust stains, 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 detergent may be required to neutralise any acid compounds left on the surface. Cleaning the plate Use a wire scourer to eliminate cooking residues, and some vinegar in case you need to remove persistent unpleasant odours. Rinse with clean water and make sure that the surface is perfectly dry to prevent the risk of rust stains 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. 15

24 Operating instructions 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 operation throughout the entire HIGH-to-LOW control range. We recommend signing a service agreement providing for at least one check-up a year. 16

25 Installation 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 responsible 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 Regulatory installation conditions 5.2 Exhausting fumes 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 installed 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 of public assembly building (hospitals, shops, etc.). 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 required 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". 17

26 Installation 5.3 Possible environmental interference 5.4 Preparing for installation If the appliance is installed with its sides next to flammable walls (made of wood or similar materials) or to heat-sensitive walls (made of plasterboard or similar materials), suitable protective measures should be taken to keep such walls undamaged. Therefore, apply a coating to insulate the walls from radiative heat or keep a minimum clearance of 100 mm (4") from the side and back panels of the appliance. If the appliance is installed in the immediate vicinity of other electric appliances, ensure that they do not interfere with each other. They should all have independent power supplies. 5.5 Storage Check that the appliance is pre-set to use the gas family available at the place of use. If the available gas is different, you will need to convert the appliance to use this other type of gas. For directions, please refer to section "Adjustment instructions" below. Check that the appliance is pre-set to operate on the voltage available at the place of use. Should the available voltage rating be different, do not install the appliance. If the appliance has been stored in a warehouse where room temperature is below 0 C (32 F), it should be warmed up to at least +10 C (50 F) before switching it on. 5.6 Transporting the appliance 5.7 Unpacking the appliance The best way to transport this appliance is inside its packing to protect it from outside damage. After the appliance has been unpacked, use wooden spacers if you should need to lift it up. Prior to installation, remove all packaging materials from the appliance. Certain parts are wrapped up in adhesive film, which should be carefully removed. Remove any glue traces left on the appliance thoroughly using non-flammable solvents. It is forbidden to use abrasive substances. 5.8 Disposing of packaging materials All packaging materials must be disposed of in compliance with applicable local regulations in force where the appliance is being installed. Packaging materials should be separated according to their types and delivered to specific collection sites. Ensure compliance with environmental protection regulations. 18

27 Installation 5.9 Positioning the appliance Level the appliance using a bubble level. Height can be adjusted with the help of the adjustable feet Electrical connections (versions with electric oven and/or hot cupboard) General information The appliance should be operated only when properly connected to an effective earthing (grounding) system. The appliance is pre-set to be wired to the electrical switchboard. Before connecting the appliance to the power supply network, check: that distribution network voltage matches the voltage shown on the appliance s rating plate; that the grounding (earthing) system is effective; that the power cord is made of rubber and is of at least the same quality as cable type H07RN-F, with conductors having a cross section suited to the maximum load they will carry (refer to "Technical specifications table" at the end of this manual); an effective multi-pole breaker having a contact gap of at least 3 mm should be fitted upstream of the appliance at the time of installation. The multi-pole breaker should be installed in the immediate vicinity of the appliance and be readily accessible. We recommend fitting a thermal-magnetic circuit breaker with built-in fuse protection; the power cord of the appliance should not be exposed to direct heat sources. 19

28 Installation Connecting a type "Y" power cord to the appliance s terminal block The appliance is supplied complete with power cord. The power cord can only be replaced by the manufacturer, by the manufacturer s service or by a technician having similar qualifications. To access the power supply terminal block, proceed as follows: disconnect power; remove the lower front panel (item 1 in Fig. 6) by unscrewing the several screws shown as item 2. Fig Lower front panel 2. Fixing screws Fig Terminal block 4. Cable gland The power cord should be locked in place with the cable gland (item 4 in Fig. 7) so as to avoid the risk of tearing it. The length of the ground (earth) cable should be such as to allow it to suffer any possible mechanical stress after the live leads. 20

29 Installation Instructions to connect the power cord, applicable to model 76/02CTGGE only Disconnect power; remove the right side panel of the appliance; unscrew the 4 screws securing the cover of the electrical box (item 1 in Fig. 8); the power supply terminal block (item 2) and the cable gland (item 3) to be used to lock the power cord in place so as to avoid the risk of tearing it, are contained in this compartment. Fig Electrical box 2. Terminal block 3. Cable gland 21

30 Installation 5.11 Gas supply connection COUNTRY Belgium France Spain Great Britain Ireland Greece Italy Italian Switzerland Portugal Austria German Switzerland II2E+3+ II2H3+ II2H3+ This appliance is designed to burn natural and liquid gas. To find out the category to which this appliance belongs in the country where it is installed, please refer to the table below. Table 1: gas categories and pressure values APPLIANCE CATEGORY GAS RATED PRESSURE (mbar) MINIMUM PRESSURE (mbar) MAXIMUM PRESSURE (mbar) G G G G G G G G G G G II2H3B/P G30 G Germany II2ELL3B/P G20 G G30 G G Finland II2H3B/P G30 G G Denmark II2H3B/P G30 G G Sweden II2H3B/P G30 G Luxembourg I2E G G Netherlands II2L3B/P G30 G Norway I3B/P G30 G Hungary II2HS3B/P G20 G G30 G G Czech Republic II2H3B/P G30 G

31 Installation The appliance should be connected to the gas supply by means of metal pipes --either rigid or flexible-- having an adequate diameter (see "Technical specifications table" at the end of this manual). When joining pipe fittings, never use oakum or Teflon as their residues could get to the valve and jeopardise its operation. Instead, interpose a seal gasket suitable for use in gas systems. Do not forget to fit a shutoff valve on the gas supply line upstream of the appliance, which should be closed whenever the appliance is not in operation. Operating pressure values are shown on the rating plate and in "Table 1: gas categories and pressure values" above. After connecting the appliance to the gas system, check for leaks at joints and pipe fittings; to do so, use soapy water or a specific leak detector (spray) Changing gas inlet connection from the right to the left (optional) Gas inlet connection may be changed from the right side to the left side using a kit which includes the following items: 1 Male/Female 1/2" elbow; Female/Female 1/2" elbow; Male/Male 1/2" pipe; kit fixing bracket. To change the gas inlet connection from the right to the left side of the appliance, proceed as follows: Fix the FF elbow to the gas ramp of the appliance; fix the MF elbow to the MM pipe; insert the pipe into the hole of the fixing bracket and fix it to the FF elbow; screw the bracket to the lower frame; proceed as usual to connect the appliance to the gas supply Checking the supply pressure of the gas after installation Gas supply pressure may be measured by using a liquid (e.g., a U-tube manometer with 0.1 mbar scale resolution) or a digital manometer. 23

32 Installation Initial phases only valid for models 76/02CTG, 76/02CTGG, 76/02TCTG, 76/02+4CTGG and 76/02CTGGE Remove the left grate, the burners and the left drip pan; unscrew the screw (item 3 in Fig. 10) of the pressure port (item 2); Fig Gas ramp 2. Pressure port 3. Pressure port sealing screw 24

33 Installation Initial phases only valid for models 74/02CTG, 74/02TCTG, 74/02CTGG, 74/02+2CTGG and 74/02CTGE Remove the knobs, open the doors and remove the front panel by unscrewing the screws in item 1 of Fig. 11; Fig Screws securing the front panel unscrew the screw (item 3 in Fig. 12) of the pressure port (item 2); Fig Gas ramp 2. Pressure port 3. Pressure port sealing screw 25

34 Installation Following phases valid for all models Place the manometer; start up the unit by following the instructions in the user's manual; check supply pressure; if the actual pressure is included in the values previously shown in the "Table 1: gas categories and pressure values", the unit may be turned on, otherwise, contact the gas utility company; remove the manometer; reassemble the sealing screw (item 3 in Fig. 10 e Fig. 12); check for a good seal (see the preceding chapter"gas supply connection"). 26

35 Installation 5.13 Gas technical specifications The appliance should be started up at its rated output with the nozzles shown in "Table 2: burner specifications" below. All the necessary nozzles are provided in a small bag together with the appliance. The nozzles of the main burners are marked in hundredths of mm, while those of pilot flames have a reference number. Table 2: burner specifications C D Oven Mini solid top Solid top Rated output (kw) ,6 12 Minimum output (kw) / 1,8 4,8 G ,593 1,270 Natural gas consumption (m³/h) G ,690 1,478 G ,690 1,479 Liquid gas consumption (kg/h) ,438 0,939 Town gas consumption (m³/h) G110 G120 G20 20mbar Rated pressure (mbar) 20 Reduced pressure (mbar), minimum ,6 Pilot Nozzles (1/100 mm) Max Min. R R Primary air distance (mm) / / G25 20mbar Rated pressure (mbar) 20 Reduced pressure (mbar), minimum Pilot Nozzles (1/100 mm) Max Min. R R Primary air distance (mm) * / / G25 25mbar Rated pressure (mbar) 25 Reduced pressure (mbar), minimum Pilot Nozzles (1/100 mm) Max Min. R R Primary air distance (mm) * / / G30/31 28/37 mbar G30/31 30 mbar G30/31 30/37 mbar Rated pressure (mbar) 28 / 30 / 37 Reduced pressure (mbar), minimum Pilot Nozzles (1/100 mm) Max Min / Primary air distance (mm) / / 27

36 Installation Table 2: burner specifications C D Oven Mini solid top Solid top G30/31 50 mbar Rated pressure (mbar) 50 Reduced pressure (mbar), minimum Pilot Nozzles (1/100 mm) Max Min / Primary air distance (mm) / / G20 25mbar Rated pressure (mbar) 25 Reduced pressure (mbar), minimum / / Pilot Nozzles (1/100 mm) Max Min. R R / R Primary air distance (mm) / G mbar Rated pressure (mbar) 25 Reduced pressure (mbar), minimum / / Pilot Nozzles (1/100 mm) Max Min. R R / R Primary air distance (mm) / G110 8 mbar Rated pressure (mbar) Reduced pressure (mbar), minimum Nozzles (1/100 mm) Pilot Max. Min. Primary air distance (mm) G120 8 mbar Rated pressure (mbar) Reduced pressure (mbar), minimum Nozzles (1/100 mm) Pilot Max. Min. Primary air distance (mm) * Apply the air register plate (see chapter "Replacing oven burner nozzles" in section "Adjustment instructions"). The primary air sleeve should be fitted and adjusted as shown in "Table 2: burner specifications" above. 28

37 Installation 5.14 Checking operation 1. Start up the appliance by following the instructions given in chapter "Using the appliance"; 2. check for gas leaks; 3. check for flame stability throughout the whole control range by going from high to low Staff training Inform all personnel assigned to operate the appliance on how to use it by referring to this user s manual and hand them out the manual Rating plate The rating plate showing the specifications of the corresponding model is applied in the position shown in the installation and connection drawings and includes the data listed below: Manufacturer: Model: Serial number: Year of manufacture: Category: Heating power: Natural gas consumption: Liquid gas consumption: Supply pressure: natural gases: G20 liquid gases (butane/propane): G30/ G31 town gas: G110/G120 Gas inlet pipe size: Supply voltage: Appliance pre-set to use: (see front page) (see "Technical specifications table") (see "Table 2: burner specifications" further above) (see "Table 2: burner specifications" further above) (see "Table 2: burner specifications" further above) (see "Table 1: gas categories and pressure values" further above) (see "Table 1: gas categories and pressure values" further above) (see "Table 1: gas categories and pressure values" further above) (see "Technical specifications table") (see the label on the packaging and on the unit) 29

38 Installation 30

39 Adjustment instructions 6. Adjustment instructions To convert (for example) from natural gas to liquid gas, you need to change the nozzles of main and pilot burners. The appropriate nozzles are shown in "Table 2: burner specifications". 31

40 Adjustment instructions 6.1 Replacing open burner nozzles Remove the grate, the flame spreader (item 1 in Fig. 13), the burner (item 2) and the drip pan; unscrew the screw (item 5 in Fig. 13) that fixes the primary air sleeve (item 6) and remove the sleeve; unscrew the nozzle (item 7) using a 13-mm spanner and fit a suitable nozzle (refer to "Table 2: burner specifications"). Fig Flame spreader 2. Burner 3. Venturi tube 4. Washer 5. Air sleeve fixing screw 6. Air sleeve 7. Nozzle 8. Nut 9. Nozzle holder 10. Washer 11. Screw 32

41 Adjustment instructions adjust primary air distance (H in Fig. 14) according to the values shown in "Table 2: burner specifications". Fig Air sleeve 33

42 Adjustment instructions 6.2 Replacing the nozzle of open burner pilot flames Unscrew the sealing screw (item 8 in Fig. 15) using an 11-mm spanner, and remove it; unscrew the nozzle (item 6) with a flat-blade screwdriver and remove it; fit a suitable nozzle and screw it down completely (see "Table 2: burner specifications"); adjust primary air to the pilot flame by moving the ring shown as item 4; the pilot flame should be blue and it should fully wrap up the thermocouple; otherwise, check that you have fitted the right nozzles. Fig Thermocouple fixing nut 2. Pilot flame top 3. Thermocouple 4. Air register ring 5. Pilot flame body 6. Nozzle 7. Gasket 8. Sealing screw 34

43 Adjustment instructions 6.3 Replacing oven burner nozzles Remove the lower front panel (item 1 in Fig. 16) by unscrewing the several screws shown as item 2. Fig Lower front panel 2. Fixing screws open the oven door and take out the bottom plates; 35

44 Adjustment instructions unscrew the screw (item 10 in Fig. 18) fixing the primary air sleeve (item 9 in Fig. 18) and remove it; unscrew the nozzle (item 6 in Fig. 17) using a 13-mm spanner, and fit a suitable nozzle (see "Table 2: burner specifications"); Fig Screw 4. Washer 5. Nozzle holder 6. Nozzle 7. Nut 8. Burner 36

45 Adjustment instructions adjust primary air distance (H in Fig. 18) according to the values shown in "Table 2: burner specifications"; Fig Primary air sleeve 10. Fixing screw 11. Fixed air register for G25 natural gases 12. Air register fixing holes if the appliance will be using type G25 natural gas --and only in this case--, remove the air sleeve and fit the air register plate (item 11 in Fig. 18); replace the primary air sleeve and adjust it according to the values shown in "Table 2: burner specifications". 37

46 Adjustment instructions 6.4 Replacing the nozzle of the solid top burner Remove the knobs, unscrew the screws fixing the front panel and remove it; the burner may be accessed both from the front and from the right side of the flue box; unscrew the nozzle (item 2 in Fig. 19) using a 13-mm spanner (wrench) and fit a suitable nozzle (refer to "Table 2: burner specifications"); primary air does not need to be adjusted. Fig Nozzle holder 2. Nozzle 3. Nut 4. Burner 38

47 Adjustment instructions 6.5 Replacing the nozzle of the oven or solid top pilot flame Place a 12-mm spanner on the pilot burner body (item 1 in Fig. 20) to counterbalance torsional stress; with a 10-mm spanner, unscrew the nut (item 5 in Fig. 20) fixing the thermocouple and remove the thermocouple; unscrew the nut fixing the gas pipe (item 8) and remove the pipe; take the nozzle (item 6) out of the pilot burner body and replace it with a suitable one (see "Table 2: burner specifications"); refitting the spare part is a reversal of removal; it is not necessary to adjust primary air; Fig Pilot flame body 2. Thermocouple 3. Ignition electrode 4. Ignition electrode fixing nut 5. Thermocouple fixing nut 6. Nozzle 7. Biconic fitting 8. Gas pipe fixing nut 39

48 Adjustment instructions 6.6 Adjusting minimum output If the appliance will be using liquid gases, remove the knobs, insert a screwdriver through the hole and completely screw down the screw shown as item 1 in Fig. 21. Fig Screw to adjust minimum output 2. Gas inlet pipe fitting 3. Thermocouple pipe fitting 4. Gas outlet pipe fitting 5. Pilot burner pipe fitting For other types of gas, you will need to adjust the screw as required until you obtain a stable and even flame. Proceed as follows: unscrew the screw shown as item 6 in Fig. 22; Fig Screw 40

49 Adjustment instructions 6.7 Functional check connect a liquid-filled pressure gauge (for example, a U-shaped pressure gauge, minimum scale division 0.1 mbar) or a digital gauge; start up the appliance by following the instructions in the user s manual. Gas pressure at minimum burner output should match the pressure values shown in "Table 2: burner specifications" under Reduced pressure (mbar), minimum. Start the appliance by following the "Operating instructions"; check for leaks; check for flame stability throughout the ON-OFF-ON control range; check the lighting process along the main burner and check that flames are even; check for proper operation of pilot flame; check that flue gases come out of the corresponding pipes regularly; check that there is a good inflow of fresh air. 41

50 Adjustment instructions 42

51 Troubleshooting 7. Troubleshooting Users are not allowed to perform any maintenance operations on any parts of this appliance. Maintenance should be carried out by an authorized technician. TROUBLE POSSIBLE CAUSES WHAT TO DO FOR THE USER OPEN BURNERS Pilot burner won t light: pressure drop in gas supply pipe nozzle clogged; gas valve damaged; FOR THE INSTALLER contact the gas utility company; remove any dirt from the nozzle; replace it; After releasing the knob, the pilot burner goes out: gas valve knob not pressed down firmly or long enough to heat the thermocouple. thermocouple faulty; repeat the lighting procedure; replace it; Pilot flame stays lit, but burner won t light: gas valve damaged; pressure drop in gas supply pipe nozzle clogged; gas valve damaged; the gas outlet holes on the burner crown are clogged; burner components are not properly placed one on top of the other; clean the crown; place them properly; replace it; contact the gas utility company; remove any dirt from the nozzle; replace it; When turning the open burner knob from high to low, the burner goes out: minimum output too low; adjust minimum output (see chapter "Adjusting minimum output" in section "Adjustment instructions"). 43

52 Troubleshooting TROUBLE POSSIBLE CAUSES WHAT TO DO FOR THE USER SOLID TOP and GAS OVEN Pilot flame won t light: piezoelectric ignition device faulty; the ignition electrode is not securely fixed, or the wire connection is wrong; ignition electrode insulator damaged; pressure drop in gas supply pipe; nozzle clogged; gas valve damaged; FOR THE INSTALLER replace it; check the connection; replace it; contact the gas utility company; remove any dirt from the nozzle; replace it. After releasing the knob, the pilot flame goes out: gas valve knob not pressed down firmly or long enough to heat the thermocouple. thermocouple faulty; gas valve damaged; repeat the lighting procedure; replace it; replace it. Pilot flame stays lit, but burner won t light: pressure drop in gas supply pipe nozzle clogged; gas valve/tap damaged; gas outlet holes on the burner clogged; clean the burner. contact the gas utility company; remove any dirt from the nozzle; replace it; Temperature fails to work: control thermostat bulb damaged; thermostat damaged; replace the valve; replace the valve; Uneven cooking (strong difference in food colour): temperature is too high; baking pan too close to heat source; product divided into pieces that have different sizes or thicknesses; wire shelves not horizontal; use a lower temperature; place the baking pan on the top slide; to ensure cooking evenness, spread food over the entire baking pan evenly. In the case of solid foodstuffs, all the pieces should have --as much as possible-- the same size, number of layers or thickness. level the appliance and check that the wire shelves are horizontal using the adjustable feet: such operation is essential to ensure even cooking. 44

53 Troubleshooting TROUBLE POSSIBLE CAUSES WHAT TO DO FOR THE USER ELECTRIC OVEN No heating: no power; check that the appliance is being powered. FOR THE INSTALLER A temperature is set but the oven won t turn on: safety thermostat has tripped; reset the thermostat. Uneven cooking (strong difference in food colour): selector switch position is wrong or unsuitable for the desired cooking method product divided into pieces that have different sizes or thicknesses; wire shelves not horizontal; choose a suitable selector switch position to produce heat from the oven top and bottom as required according to the cooking method you intend to use; to ensure cooking evenness, spread food over the entire baking pan evenly. In the case of solid foodstuffs, all the pieces should have --as much as possible-- the same size, number of layers or thickness; level the appliance and check that the wire shelves are horizontal using the adjustable feet: such operation is essential to ensure even cooking; one of the two heating elements is faulty; replace it (refer to the chapters on how to replace heating elements). HOT CUPBOARD No heating: no power; check that the appliance is being powered. A temperature is set but the hot cupboard won t turn on: thermostat faulty; heating element faulty; replace it; replace it (see chapter "Replacing the hot cupboard heating element" in section "Service"). 45

54 Troubleshooting 46

55 Technical specifications 9. Technical specifications Connection diagrams...82 Installation and connection drawings.86 Technical specifications table...97 CE conformity declaration

56 SC00414: wiring diagram 74/02CTGE - 3/N/PE ~400V Hz

57 Technical specifications LE00385: key to wiring diagram SC /02CTGE - 3/N/PE ~400V Hz Letter code Art. no. Descriptions Specifications B2 A Control thermostat C - 3F B16 A Safety thermostat 350 C - 3F E1 A Line pilot lamp 400V C E12 A Operation pilot lamp 400V C E58-59 A Heating element 2750W - 230V S8 A Switch 3F S9 A Switch 4-position 83

58 SC00415: wiring diagram 76/02CTGGE - 1/N/PE ~230V 50-60Hz

59 Technical specifications LE00386: key to wiring diagram SC /02CTGGE - 1/N/PE ~230V 50-60Hz Letter code Art. no. Descriptions Specifications B1 A Control thermostat C - 1F E1 A Line pilot lamp 400V C E11 A Operation pilot lamp 400V C E57 A Heating element 420W - 230V S7 A Switch 1F 85

60 Technical specifications Installation and connection drawing 74/02CTG A C E Gas supply connection Distance between feet Rating plate 86

61 Technical specifications Installation and connection drawing 74/02TCTG A C E Gas supply connection Distance between feet Rating plate 87

62 Technical specifications Installation and connection drawing 74/02CTGG A C E Gas supply connection Distance between feet Rating plate 88

63 Technical specifications Installation and connection drawing 74/02+2CTGG A C D E Gas supply connection Distance between feet Distance between burners Rating plate 89

64 Technical specifications Installation and connection drawing 74/02CTGE A B C D E G Gas supply connection Connection cable entry Distance between feet Distance between burners Rating plate Terminal block 90

65 Technical specifications Installation and connection drawing 76/02CTG A C D E Gas supply connection Distance between feet Distance between burners Rating plate 91

66 Technical specifications Installation and connection drawing 76/02CTGG A C D E Gas supply connection Distance between feet Distance between burners Rating plate 92

67 Technical specifications Installation and connection drawing 76/02TCTGG A C D E Gas supply connection Distance between feet Distance between burners Rating plate 93

68 Technical specifications Installation and connection drawing 76/02+4CTGG A C D E Gas supply connection Distance between feet Distance between burners Rating plate 94

69 Technical specifications Installation and connection drawing 76/02CTGGE A B C D E Gas supply connection Connection cable entry Distance between feet Distance between burners Rating plate 95

70 Technical specifications 96

71 Technical specifications Item Type Volt. Specification External dimensions WxDH, freestanding unit 74ST,74STG,74STE,74STG+2 800x700x860/900 mm External dimensions WxDH, freestanding unit 76ST,76STG,76STGE,76STG x700x860/900 mm External dimensionswxdxh, tabletop unit 74STT 800x700x280 mm Inner oven dimensions 74STG,74STE,76STG,76STGE,74STG+2,7 660x300x543 mm 6STG+4 Inner cupboard dimensions 76STG,76STGE 300x331x550 mm Volume with package 74ST,74STG,74STE,74STG m³ Volume with package 76ST,76STG,76STGE,76STG m³ Volume with package 74STT 0.29 m³ Total weight 74ST 125 Kg Total weight 74STG,74STE 155 Kg Total weight 76ST 170 Kg Total weight 76STG,76STGE 205 Kg Total weight 74STT 98 Kg Electric oven power 74STE 5.5 kw Electric cupboard power 76STGE 0.42 kw Max. current 74STE A 7.9 A Max. current 74STE H 13.8 A Minimum lead gauge Minimum lead gauge Supply voltage 74STE A 3/N/PE ~400V 50Hz Supply voltage 74STE H 3/PE ~230V 50Hz Gas burnes 76ST,76STG,76STTG,76STG+4,74STG+2,7 1x3.5-1x5.6 6STGE Heat gas oven 74STG,76STG,76STGE,74STG+2,76STG kw Gas power 74ST,74STT,74STE 12 kw Gas power 74STG 19.9 kw Gas power 76ST,76STG,76STTG,76STGE 29 kw Construction type Italy 74ST,74STT,74STE A Construction type Italy 74STG,76ST,76STG,76STTG,76STGE B11 Construction type Germany B11 Construction type valid for other countries A Gas inlet 1/2" G ISO R7 700new=700 - Series 74ST=74/02CTG, 74STT=74/02TCTG, 74STG=74/02CTGG, 74STG+2=74/02+2CTGG, 74STE=74/02CTGE, 76ST=76/02CTG, 76STG=76/02CTGG, 76STG+4=76/02+4CTGG, 76STTG=76/02TCTGG, 76STGE=76/02CTGGE A=3/N/PE 400/230V 50Hz, H=3/PE 230V 50Hz 97