Ariston Thermo PO 740 ES IX - Cooker

PO 740 ES IX - Cooker Ariston Thermo - Free user manual and instructions

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USER MANUAL PO 740 ES IX Ariston Thermo

natural_image 3D diagram of a gas stove with four fans and labeled points A, B, C (no text or symbols beyond labels)

Ariston Thermo PO 740 ES IX - 1

natural_image 3D diagram showing a gray object with a cross-sectional view and labeled points F and D (no text or symbols beyond labels)

A. Bruciatori gas

natural_image Simple line drawing of a house interior with a stove, roof, and cooling unit (no text or symbols)

Ariston Thermo PO 740 ES IX - 2

natural_image Simple line drawing of a house interior with a stove, roof, and airflow indicators (no text or symbols)
text_image Diagram showing airflow or ventilation system between a cabinet and a control room, with labeled components and directional arrows.
natural_image Pure mechanical cross-section diagrams without any text, numbers, or symbols
text_image 560 mm. 45 mm.
natural_image Two mechanical mounting base configurations with cylindrical components and connecting rods (no text or symbols)

Ariston Thermo PO 740 ES IX - 3

natural_image Diagram of a candle flame experiment setup with a candle and base (no text or labels)

Congratulations on choosing an Ariston appliance, which you will find is dependable and easy to use. We recommend that you read this manual for best performance and to extend the life of your appliance. Thank you.

Close-up View

Ariston Thermo PO 740 ES IX - Close-up View - 1

natural_image 3D diagram of a gas stove with four fans and labeled points A, B, C (no text or symbols beyond labels)

Ariston Thermo PO 740 ES IX - Close-up View - 2

natural_image 3D mechanical part diagram showing a flanged component and a cross-sectional view with labeled points F and D (no text or symbols beyond labels)

A. Gas Burners

B. Support Grid for Cookware - To be positioned in the special seats recessed into the hob, making sure that the central shape of the support corresponds with that of the burner.

C. Control Knobs for Gas Burners

D. Ignitor for Gas Burners

F. Safety Device - Activates if the flame accidentally goes out (spills, drafts, etc.), interrupting the delivery of gas to the burner.

How To Use Your Appliance

The position of the corresponding gas burner or electric hot plate (if present) is indicated on each control knob.

Gas Burners

The burners differ in size and power. Choose the most appropriate one for the diameter of the cookware being used.

The burner can be regulated with the corresponding control knob by using one of the following settings:

- Off

Ariston Thermo PO 740 ES IX - Gas Burners - 1

High

Ariston Thermo PO 740 ES IX - Gas Burners - 2

Low

The models feature control knobs with integrated ignition. To light the selected burner, first press the corresponding knob down fully, turn it anti-clockwise to the high flame symbol, and keep the knob pressed down until the burner ignites for approximately 3-4 seconds to allow the safety device "F", which keeps the flame lit automatically, to heat up.

To turn off a burner, turn the knob clockwise until it stops (it should be on the “•” setting).

Caution: If the burner accidentally goes out, turn off the gas on the control knob and wait at least 1 minute before you try to to light it again.

How to Keep Your Cooktop in Shape

Before cleaning or performing maintenance on your appliance, disconnect it from the electrical power supply. To extend the life of the cooktop, it is absolutely indispensable that it be cleaned carefully and thoroughly on a frequent basis, keeping in mind the following:

Do not use steam equipment to clean the appliance.
- The enameled parts must be washed with warm water without using abrasive powders or corrosive substances which could ruin them;
- The removable parts of the burners should be washed frequently with warm water and soap, making sure to remove caked-on substances;
- On cooktops with automatic ignition, the end of the electronic ignition device must be cleaned carefully and frequently, making sure that the gas holes are not clogged;

- Stainless steel can be stained if it remains in contact with highly calcareous water or aggressive detergents (containing phosphorous) for an extended period of time. It is recommended that these parts be rinsed thoroughly with water and then dried well. It is also a good idea to clean up any spills.

Greasing the Taps

The taps may jam in time or they may become difficult to turn. If so, the tap itself must be replaced.

N.B.: This operation must be performed by a technician authorised by the manufacturer.

Practical Advice

Practical Advise on Using the Burners

For best performance, follow these general guidelines:

  • Use the appropriate cookware for each burner (see table) in order to prevent the flame from reaching the sides of the pot or pan;
  • Alwasy use cookware with a flat bottom and keep the lid on;
  • When the contents come to a boil, turn the knob to "Low".
Burner ø Cookware diameter (cm)
Fast (R) 24 - 26
Semi Fast (S) 16 - 20
Auxiliary (A) 10 - 14

Is there a problem?

It may occur that the cooktop does not function or does not function properly. Before calling customer service for assistance, lets see what can be done.

First of all, check to see that there are no interruptions in the gas and electrical supplies, and, in particular, that the gas valves for the mains are open.

The burner does not light or the flame is not uniform around the burner.

Check to make sure that:

  • The gas holes on the burner are not clogged;
  • All of the movable parts that make up the burner are mounted correctly;
  • There are no draughts around the cooking surface.

The flame does not stay lighted on the model with the safety device.

Check to make sure that:

  • You press the knob all the way in;
  • You keep the knob pressed in long enough to activate the safety device.
  • The gas holes are not clogged in the area corresponding to the safety device.

The burner does not remain on when set to "Low".

Check to make sure that:

• The gas holes are not clogged.
- There are no draughts near the cooking surface.
- The minimum has been adjusted correctly (see the section entitled, "Minimum Regulation").

The cookware is not stable.

Check to make sure that:

  • The bottom of the cookware is perfectly flat.
  • The cookware is centered correctly on the burner.
  • The support grids have not been inverted.
    If, despite all of these checks, the cooktop does not function properly and problem persists, call the nearest Merloni Elettrodomestici Customer Service Centre, informing them of:

  • The type of problem.

  • The abbreviation used to identify the model (Mod. ...) as indicated on the warranty.

Never call upon technicians not authorized by the manufacturer, and refuse to accept spare parts that are not original.

Safety Is a Good Habit to Get Into

To maintain the EFFICIENCY and SAFETY of this appliance, we recommend:

  • call only the Service Centers authorized by the manufacturer
    • always use original Spare Parts

• This manual is for a class 3 built-in cooktop.
- This appliance is designed for non-professional use in the home and its features and technical characteristics must not be modified.
• These instructions are only valid for the countries the symbols for which appear on the manual and the serial plate.
- The electrical system of this appliance is safe only when it is correctly connected to an adequate earthing system, as required by current safety standards.

Prevent children and the disabled from coming into contact or having access to the following, as they are possible sources of danger:

  • The controls and the appliance in general;
  • The packaging (plastic bags, polystyrene, nails, etc.);
  • The appliance, during and immediately after use given the heat generated by its use;
  • The appliance when no longer in installed (in this case, all potentially dangerous parts must be made safe).

The following should be avoided:

  • Touching the appliance with wet parts of the body;
  • Using the appliance with bare feet;
  • Pulling on the appliance or the power supply cord to disconnect them from the electrical outlet;
  • Improper and/or dangerous use;
  • Obstructing the ventilation or heat dissipation slots;
  • Allowing the power supply cord of small appliances to come into contact with the hot parts of the cooktop;
  • Exposure to atmospheric agents (rain, sun);
  • Using flammable liquids nearby;
  • Using adaptors, multiple outlet plugs and/or extensions;
  • Using unstable or deformed cookware;
  • Leaving the electric hobs on without cookware on top of them;
  • Trying to install or repair the appliance without the assistance of qualified personnel.

The assistance of qualified personnel must be called upon in the following cases:

  • Installation (in accordance with the manufacturer's instructions);
  • When in doubt about the operation of the appliance;
  • Replacement of the electrical outlet because it is incompatible with the plug.

Contact service centers authorized by the manufacturer in the following cases:

  • When in doubt about the condition of the appliance after having removed the packing;
  • Damage to or replacement of the power supply cord;
  • In the case of a breakdown or malfunction: ask for original spare parts.
  • Only use the appliance to cook food, avoiding all other uses;
  • Check the condition of the appliance after it has been unpacked;
  • Disconnect the appliance from the power supply in the event of malfunction and always before cleaning or maintenance;
  • When not in use, disconnect the appliance from the power supply and turn off the gas valve (if present);
  • Always check to make sure that the control knobs are on the “•”/“o” setting when the appliance is not in use;
  • Cut the power supply cord after disconnecting it from the electrical mains when you decide to no longer use the appliance.
  • The manufacturer will not be held liable for any damages arising out of : incorrect installation or improper, incorrect or unreasonable use..

Installation Instructions for built-in

The following instructions are intended for the installer so that the installation and maintenance procedures may be followed in the most professional and expert manner possible. Important: Disconnect the appliance from the electrical supply before performing any maintenance or regulation upkeep work.

Positioning the Cooktop

Important: this unit may be installed and used only in permanently ventilated rooms in accordance with British Standard Codes Of Practice: B.S. 6172 / B.S. 5440, Par. 2 and B.S. 6891 Current Editions. The following requirements must be observed:

a) The room must be fitted with a ventilation system which vents smoke and gases from combustion to the outside. This must be done by means of a hood or electric ventilator that turns on automatically each time the hood is operated.

Ariston Thermo PO 740 ES IX - Positioning the Cooktop - 1

natural_image Two schematic diagrams of a house interior with steam rising from the roof, showing internal heating and ventilation systems (no text or labels)

In a chimney stack or branched flue. Directly to the Outside (exclusively for cooking appliances)

b) The room must also allow for the influx of the air needed for proper combustion. The flow of air for combustion purposes must not be less than 2 m^3/h per kW of installed capacity. The supply of said air can be effected by means of direct influx from the outside through a duct with a inner cross section of at least 100 cm^2 which must not be able to be accidentally blocked. Those appliances which are not fitted with a safety device to prevent the flame from accidentally going out must have a ventilation opening twice the size otherwise required, i.e. a minimum of 200 cm^2 (Fig. A). Otherwise, the room can be vented indirectly through adjacent rooms fitted with ventilation ducts to the outside as described above, as long as the adjacent rooms are not shared areas, bedrooms or present the risk of fire (Fig. B).

Detail A Adjacent Room to be

Room Vented

Ariston Thermo PO 740 ES IX - Positioning the Cooktop - 2

text_image Diagram showing airflow or ventilation system with labeled components and directional arrows, including a valve mechanism and exhaust system.

Examples of ventilation holes Enlarging the ventilation slot
for comburant air. between window and floor.
Fig. A Fig. B

c) Intensive and prolonged use of the appliance may necessitate supplemental ventilation, e.g. opening a window or increasing the power of the air intake system (if present).
d) Liquidified petroleum gases are heavier than air and, as a result, settle downwards. Rooms in which LPG tanks are installed must be fitted with ventilation openings to the outside in order to allow the gas to escape in the event of a leak. Therefore, LPG tanks, whether empty or partially full, must not be installed or stored in rooms or spaces below ground level (cellars, ect.). It is also a good idea to keep only the tank currently being used in the room, making sure that it is not near sources of heat (ovens, fireplaces, stoves, etc.) that could raise the internal temperature of the tank above 50°C.

Installation of Built-in Cooktops

The appliance can be installed next to furniture units which are no taller than the top of the cooker hob. The wall in direct contact with the back panel of the cooker must be made of non-flammable material. During operation the back panel of the cooker could reach a temperature of 50^ C above room temperature. For proper installation of the cooker, the following precautions must be taken:

a) If the cabinet(s) located next to the cooktop are higher than the cooktop itself, the cabinet(s) must be installed at least 600 mm from the edge cooktop;
b) Hoods must be installed in accordance with the instructions contained in the installation manual for the hoods themselves, and no less than 650 mm from the cooktop;
c) In the case of the 600 mm cooker hoods, besides following the recommendations in point b), the cabinets should be positioned next to the hood at a height of at least 540 mm from the top. The cabinet should always be installed at a height from the top which allows easy use of pots and pans on the cooker.
d) Should the cooktop be installed directly under a cupboard, the latter should be at least 700 mm (millimetres) from the top, as shown in Figure.

Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 1

e) The dimensions of the cutout for the appliance must be those indicated in the figure. Clamps are provided to fasten the cooktop to counters measuring from 20 to 40 mm in thickness. To fasten the cooktop securely, it is recommended that all the clamps be used.

Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 2

text_image 55 mm 475 mm 555 mm

Fastening Clamps - Assembly Diagram
Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 3

natural_image Pure mechanical cross-section diagrams without any text, numbers, or symbols

Clamp Position for Clamp Position for H=20mm top H=30mm top
Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 4

text_image Front

Clamp Position for

H=40mm top Back

N.B: Use the clamps contained in the "accessory kit."

f) In the event the cooktop is not installed above a built-in oven, a wood panel must be inserted as insulation. This panel must be placed at least 20 mm from the bottom of the cooktop itself.

Important: When installing the cooktop above a built-in oven, the oven should be placed on two wooden strips; in the case of a joining cabinet surface, remember to leave a space of at least 45 x 560 mm at the back.

Ariston Thermo PO 740 ES IX - H=40mm top Back - 1

text_image 560 mm. 45 mm.

When installing the cooktop above a built-in oven without forced ventilation, ensure that there are air inlets and outlets for ventilating the interior of the cabinet adequately.

Ariston Thermo PO 740 ES IX - H=40mm top Back - 2

text_image 60 cm² 360 cm² 120 cm² 180 cm²

Gas Connection for Cooktop

The cooktop should be connected to the gas supply by an authorized installer. During installation of this product it is essential to fit an approved gas tap to isolate the supply from the appliance for the convenience of any subsequent removal or servicing. Connection of the appliance to the gas mains or liquid gas tanks must be carried out according to the safety standards currently in force, and only after it is ascertained that it is suitable for the type of gas to be used. If not, follow the instructions indicated in the section entitled, "Adapting the Cooktop for Different Types of Gas". If the cooktop is to be connected to tanks containing liquid gas, use pressure regulators that comply with current safety standards.

Important: To insure that the appliance operates safety, the gas is regulated correctly and your appliance lasts over time, make sure that gas pressure levels comply with the indications given in Table 1, "Nozzle and Burner Specifications".

Gas Connection to Non-flexible Pipe

(copper or steel)

Connection to the gas source must be done in such a way as to not create any stress points at any part of the appliance. The appliance is fitted with an adjustable, "L" shaped connector and a gasket for the attachment to the gas supply. Should this connector have to be turned, the gasket must be replaced (supplied with the appliance).

The gas feed connector to the appliance is a threaded, male 1/2" connector for round gas pipe.

Gas Connection to Flexible Steel Pipe

The gas feed connector to the appliance is a threaded, male 1/2" connector for round gas pipe. Only use pipes, tubes and gaskets that comply with current safety codes. The maximum length of the flexible pipes must not exceed 2000 mm. Once the connection has been made, ensure that the flexible metal tube does not touch any moving parts and is not crushed.

Check the Seal

Once the appliance has been installed, make sure all the connections are properly sealed, using a soapy water solution. Never use a flame.

Electrical Connection

The cooktops fitted with a tripolar electrical supply cord are designed to be used with alternating current according to the indications on the rating plate located under the cooktop. The earthing wire can be identified by its yellow-green colour. In the case of installation over a built-in electric oven, the electrical connections for the cooktop and oven should be

independent, not only for safety purposes, but also to facilitate removal of one or both in the future.

Electrical Connection for Gas Cooktop

Fit the supply cord with a standard plug for the demand rate indicated on the rating plate or connect it directly to the electrical mains. In the latter case, a single pole switch must be placed between the appliance and the mains, with a minimum opening between the contacts of 3 mm in compliance with current safety codes (the earthing wire must not be interrupted by the switch). The power supply cord must be positioned so that it does not reach a temperature in excess of 50°C above room temperature at any point. Before making the actual connection, make sure that:

  • The fuse and electrical system can withstand the load required by the appliance;
  • That the electrical supply system is equipped with an efficient earth hook-up according to the norms and regulations prescribed by law;
  • That the plug or switch is easily accessible.

Important: the wires in the mains lead are coloured in accordance with the following code:

Green & Yellow - Earth

Blue - Neutral

Brown - Live

As the colours of the wires in the mains lead may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:

Connect the Green & Yellow wire to the terminal marked "E" or or coloured Green or Green & Yellow.

Connect the Brown wire to the terminal marked "L" or coloured Red.

Connect the Blue wire to the terminal marked "N" or coloured Black.

Adapting the Cooktop for Different Types of Gas

To adapt the cooktop to a different type of gas than that for which it was designed, (see the sticker under the hob or on the packaging), the burner nozzles must be changed, as follows:

  • Remove the pan supports and slide the burners out of the cooktop.
  • Unscrew the nozzles using a 7mm socket wrench and replace them with those for the new type of gas. (See table 1, "Burner and Nozzle Specifications").
  • Reassemble the parts following the instructions in reverse order.
  • On completing the operation, replace the old rating label with the one showing the new type of gas; the sticker is available from our Service Centres.

If the gas pressure is different than that prescribed, a pressure regulator must be installed at the source, in compliance with national standards governing the use of piped gas regulators.

Regulation of Air Supply to the Burner

The burners do not need a primary air regulator.

Minimum Regulation

  • Turn the gas valve to minimum.
  • Remove the knob and turn the regulator screw (positioned either on the side of the top or inside the shaft) clockwise until the flame becomes small but regular.

N.B.: In the case of liquid gas, the regulation screw must be fully screwed in (clockwise).

  • Make sure that, when the knob is turned rapidly high to low, the flame does not go out.
  • In the event of a malfunction on appliances with the security device (thermocouple) when the gas supply is set at minimum, increase the minimum supply levels using the regulator screw.

Once the adjustment has been made, apply sealing wax, or a suitable substitute, to the old seals on the by-pass.

Ariston Thermo PO 740 ES IX - Minimum Regulation - 1

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Ariston Thermo PO 740 ES IX - Minimum Regulation - 2

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Characteristic of the burners and nozzles

Table 1Liquid Gas Natural GasCity Gas
Burner Diameter(mm) Nomin.(mm)Thermal power kW (p.c.s.*)By-Pass 1/100Nozzle 1/100Flow*g/hNozzle 1/100Flow*l/hNozzle 1/100Flow*l/h
Ridot (mm) (mm)**** (mm)
Fast (R)90x903,000,703986218214116286285680
Semi Fast (S)65x651,900,402870138136103181185374
Auxiliary (A)45x451,000,40285073717295145227
SupplyPressuresNominal (mbar)Minimum (mbar)Maximum (mbar)28-3020353725452017258615

* At 15°C and 1013 mbar-dry gas

** Propane P.C.S. = 50.37 MJ/kg.

*** Butane P.C.S. = 49.47 MJ/kg.

Natural P.C.S. = 37.78 MJ/m³

Ariston Thermo PO 740 ES IX - Characteristic of the burners and nozzles - 1

text_image A R S S

PO 740 ES

Ariston Thermo PO 740 ES IX - Characteristic of the burners and nozzles - 2

text_image CE

This appliance complies with the following European Economic Community directives:

  • 73/23/EEC of 19/02/73 (Low Voltage) and subsequent modifications;
  • 89/336/EEC of 03/05/89 (Electromagnetic Compatibility) and subsequent modifications;
  • 90/396/EEC of 29/06/90 (Gas) and subsequent modifications;
  • 93/68/EEC of 22/07/93 and subsequent modifications.
  • 2002/96/EEC

The European Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE), requires that old household electrical appliances must not be disposed of in the normal unsorted municipal waste stream. Old appliances must be collected separately in order to optimise the recovery and recycling of the materials they contain and reduce the impact on human health and the environment. The crossed out “wheeled bin” symbol on the product reminds you of your obligation, that when you dispose of the appliance it must be separately collected. Consumers should contact their local authority or retailer for information concerning the correct disposal of their old appliance.

natural_image 3D diagram of a gas stove with four vent-shaped fans labeled A, B, and C (no text or symbols on the fan itself)

Ariston Thermo PO 740 ES IX - This appliance complies with the following European Economic Community directives: - 1

natural_image 3D diagram showing a gray plastic component and its internal structure with labeled points F and D (no text or symbols beyond labels)

A. Brûleurs gaz

natural_image Simple line drawing of a heating room with a stove and cooling unit (no text or symbols)

Ariston Thermo PO 740 ES IX - This appliance complies with the following European Economic Community directives: - 2

natural_image Simple line drawing of a house interior with a stove, air ducts, and ventilation system (no text or symbols)
text_image Diagram illustrating a double door ventilation system with labeled components and airflow direction
natural_image Technical diagram showing two mechanical assembly configurations with hatched areas indicating material sections (no text or symbols)
natural_image Cross-sectional diagram of a mechanical joint or seal assembly (no text or symbols visible)

Ariston Thermo PO 740 ES IX - This appliance complies with the following European Economic Community directives: - 3

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natural_image Pure technical line drawing of a cabinet or enclosure structure without any text, numbers, or symbols

Ariston Thermo PO 740 ES IX - This appliance complies with the following European Economic Community directives: - 4

text_image 560 mm. 45 mm.

Raccordement gaz (Pour la France)

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Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 1

natural_image Diagram of a mechanical device with a central shaft and base, showing no text or symbols
natural_image 3D diagram of a gas stove with four vent-shaped appliances labeled A, B, and C (no text or symbols beyond labels)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 2

natural_image 3D diagram showing a gray plastic component and its internal structure with labeled points F and D (no text or symbols beyond labels)
natural_image Two schematic diagrams of a house interior showing fire resistance and heating elements (no text or labels)
natural_image Pure mechanical assembly diagram showing a sliding contact and lever mechanism without any text or symbols

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 3

natural_image Cross-sectional diagram of a mechanical assembly with hatched and solid layers (no text or labels)
natural_image Cross-sectional diagram of a mechanical assembly with hatched fill and central component (no text or labels)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 4

natural_image Technical line drawing of a mechanical or electronic component with no visible text, numbers, or symbols
natural_image Technical line drawing of a mechanical assembly with no visible text or symbols

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 5

text_image 560 mm. 45 mm.
natural_image Two mechanical components with cylindrical pins and mounting base, no text or symbols visible

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 6

natural_image Diagram of a mechanical device with a cylindrical component mounted on a circular base, showing a handle and base (no text or symbols)
natural_image 3D diagram of a gas stove with four fans and labeled components (A, B, C), no text or symbols present.

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 7

natural_image 3D diagram showing a gray object with a cross-sectional view and labeled points F and D (no text or symbols beyond labels)
natural_image Two schematic diagrams of a greenhouse with steam rising from the top, showing internal heating and ventilation systems (no text or labels)
text_image Diagram showing airflow or ventilation system with labeled components and directional arrows
natural_image Pure mechanical assembly diagram showing a bracket and lever mechanism without any text or symbols

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 8

natural_image Cross-sectional diagram of a mechanical assembly with hatched area and central component (no text or labels)
natural_image Cross-sectional diagram of a mechanical joint or seal assembly (no text or labels)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 9

natural_image Technical line drawing of a mechanical or electronic component with no visible text, numbers, or symbols
natural_image Pure technical line drawing of a mechanical assembly without any text, numbers, or symbols

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 10

text_image 560 mm. 45 mm.
natural_image Two mechanical components with cylindrical heads and connecting rods, shown from different angles (no text or symbols)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 11

natural_image Simple line drawing of a mechanical device with a cylindrical component and a flame, no text or symbols present.
natural_image 3D diagram of a gas stove with four fans (A, B) and control knobs (C), no text or symbols present.

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 12

natural_image 3D diagram showing a gray object with a cross-sectional view and an arrow pointing to a labeled component (F and D), no text or symbols present.
natural_image Two schematic diagrams of a house interior with steam rising from the roof, showing heating and cooling systems (no text or labels)
natural_image Pure mechanical cross-section diagram without any text, numbers, or symbols

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 13

natural_image Cross-sectional diagram of a mechanical assembly with hatched fill and central component (no text or labels)
natural_image Cross-sectional diagram of a mechanical assembly with hatched fill and central component (no text or labels)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 14

natural_image Technical line drawing of a mechanical or electronic component with no visible text, numbers, or symbols
natural_image Architectural diagram showing structural components with beams and supports (no text or labels)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 15

text_image 560 mm. 45 mm.
natural_image Two identical mechanical components with cylindrical bases and mounting holes, no text or symbols visible

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 16

natural_image Diagram of a mechanical device with a cylindrical component mounted on a circular base, no text or symbols present
natural_image 3D diagram of a gas stove with four fans and labeled components (A, B, C), no text or symbols present.

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 17

natural_image 3D mechanical component diagram showing a flanged top and a cross-sectional view with labeled points F and D (no text or symbols beyond labels)

A. Gasbrenner

natural_image Two schematic diagrams of a house interior showing fire resistance and heating systems (no text or labels)
natural_image Technical diagram showing two mechanical assembly states with hatched areas and a central component (no text or symbols)
natural_image Cross-sectional diagram of a mechanical assembly with hatched fill and central component (no text or labels)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 18

natural_image Technical line drawing of a mechanical or electronic component with no visible text, numbers, or symbols
natural_image Technical line drawing of a cabinet or shelf assembly with two horizontal bars and a dashed-line component (no text or symbols)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 19

text_image 560 mm. 45 mm.
natural_image Two mechanical components with cylindrical pins and mounting holes, shown from different angles (no text or symbols)

Ariston Thermo PO 740 ES IX - Raccordement gaz (Pour la France) - 20

natural_image Diagram of a mechanical device with a cylindrical component mounted on a circular base, no visible text or symbols

Congratulations on choosing an Ariston appliance, which you will find is dependable and easy to use. We recommend that you read this manual for best performance and to extend the life of your appliance. Thank you.

Close-up View

Ariston Thermo PO 740 ES IX - Close-up View - 1

natural_image 3D diagram of a gas stove with four fans and labeled points A, B, C (no text or symbols beyond labels)

Ariston Thermo PO 740 ES IX - Close-up View - 2

natural_image 3D mechanical part diagram showing a flanged component and a cross-sectional view with labeled points F and D (no text or symbols beyond labels)

A. Gas Burners

B. Support Grid for Cookware - To be positioned in the special seats recessed into the hob, making sure that the central shape of the support corresponds with that of the burner.

C. Control Knobs for Gas Burners

D. Ignitor for Gas Burners

F. Safety Device - Activates if the flame accidentally goes out (spills, drafts, etc.), interrupting the delivery of gas to the burner.

How To Use Your Appliance

The position of the corresponding gas burner or electric hot plate (if present) is indicated on each control knob.

Gas Burners

The burners differ in size and power. Choose the most appropriate one for the diameter of the cookware being used.

The burner can be regulated with the corresponding control knob by using one of the following settings:

- Off

Ariston Thermo PO 740 ES IX - Gas Burners - 1

High

Ariston Thermo PO 740 ES IX - Gas Burners - 2

Low

The models feature control knobs with integrated ignition. To light the selected burner, first press the corresponding knob down fully, turn it anti-clockwise to the high flame symbol, and keep the knob pressed down until the burner ignites for approximately 3-4 seconds to allow the safety device "F", which keeps the flame lit automatically, to heat up.

To turn off a burner, turn the knob clockwise until it stops (it should be on the “•” setting).

Caution: If the burner accidentally goes out, turn off the gas on the control knob and wait at least 1 minute before you try to to light it again.

How to Keep Your Cooktop in Shape

Before cleaning or performing maintenance on your appliance, disconnect it from the electrical power supply. To extend the life of the cooktop, it is absolutely indispensable that it be cleaned carefully and thoroughly on a frequent basis, keeping in mind the following:

Do not use steam equipment to clean the appliance.
- The enameled parts must be washed with warm water without using abrasive powders or corrosive substances which could ruin them;
- The removable parts of the burners should be washed frequently with warm water and soap, making sure to remove caked-on substances;
- On cooktops with automatic ignition, the end of the electronic ignition device must be cleaned carefully and frequently, making sure that the gas holes are not clogged;

- Stainless steel can be stained if it remains in contact with highly calcareous water or aggressive detergents (containing phosphorous) for an extended period of time. It is recommended that these parts be rinsed thoroughly with water and then dried well. It is also a good idea to clean up any spills.

Greasing the Taps

The taps may jam in time or they may become difficult to turn. If so, the tap itself must be replaced.

N.B.: This operation must be performed by a technician authorised by the manufacturer.

Practical Advice

Practical Advise on Using the Burners

For best performance, follow these general guidelines:

  • Use the appropriate cookware for each burner (see table) in order to prevent the flame from reaching the sides of the pot or pan;
  • Alwasy use cookware with a flat bottom and keep the lid on;
  • When the contents come to a boil, turn the knob to "Low".
Burner ø Cookware diameter (mm)
Fast (R) 240 - 300
Semi Fast (S) 160 - 240
Auxiliary (A) 60 - 200

Is there a problem?

It may occur that the cooktop does not function or does not function properly. Before calling customer service for assistance, lets see what can be done.

First of all, check to see that there are no interruptions in the gas and electrical supplies, and, in particular, that the gas valves for the mains are open.

The burner does not light or the flame is not uniform around the burner.

Check to make sure that:

  • The gas holes on the burner are not clogged;
  • All of the movable parts that make up the burner are mounted correctly;
  • There are no draughts around the cooking surface.

The flame does not stay lighted on the model with the safety device.

Check to make sure that:

  • You press the knob all the way in;
  • You keep the knob pressed in long enough to activate the safety device.
  • The gas holes are not clogged in the area corresponding to the safety device.

The burner does not remain on when set to "Low".

Check to make sure that:

• The gas holes are not clogged.
- There are no draughts near the cooking surface.
- The minimum has been adjusted correctly (see the section entitled, "Minimum Regulation").

The cookware is not stable.

Check to make sure that:

  • The bottom of the cookware is perfectly flat.
  • The cookware is centered correctly on the burner.
  • The support grids have not been inverted.
    If, despite all of these checks, the cooktop does not function properly and problem persists, call the nearest Merloni Elettrodomestici Customer Service Centre, informing them of:

  • The type of problem.

  • The abbreviation used to identify the model (Mod. ...) as indicated on the warranty.

Never call upon technicians not authorized by the manufacturer, and refuse to accept spare parts that are not original.

Safety Is a Good Habit to Get Into

To maintain the EFFICIENCY and SAFETY of this appliance, we recommend:

  • call only the Service Centers authorized by the manufacturer
    • always use original Spare Parts

• This manual is for a class 3 built-in cooktop.
- This appliance is designed for non-professional use in the home and its features and technical characteristics must not be modified.
• These instructions are only valid for the countries the symbols for which appear on the manual and the serial plate.
- The electrical system of this appliance is safe only when it is correctly connected to an adequate earthing system, as required by current safety standards.

Prevent children and the disabled from coming into contact or having access to the following, as they are possible sources of danger:

  • The controls and the appliance in general;
  • The packaging (plastic bags, polystyrene, nails, etc.);
  • The appliance, during and immediately after use given the heat generated by its use;
  • The appliance when no longer in installed (in this case, all potentially dangerous parts must be made safe).

The following should be avoided:

  • Touching the appliance with wet parts of the body;
  • Using the appliance with bare feet;
  • Pulling on the appliance or the power supply cord to disconnect them from the electrical outlet;
  • Improper and/or dangerous use;
  • Obstructing the ventilation or heat dissipation slots;
  • Allowing the power supply cord of small appliances to come into contact with the hot parts of the cooktop;
  • Exposure to atmospheric agents (rain, sun);
  • Using flammable liquids nearby;
  • Using adaptors, multiple outlet plugs and/or extensions;
  • Using unstable or deformed cookware;
  • Leaving the electric hobs on without cookware on top of them;
  • Trying to install or repair the appliance without the assistance of qualified personnel.

The assistance of qualified personnel must be called upon in the following cases:

  • Installation (in accordance with the manufacturer's instructions);
  • When in doubt about the operation of the appliance;
  • Replacement of the electrical outlet because it is incompatible with the plug.

Contact service centers authorized by the manufacturer in the following cases:

  • When in doubt about the condition of the appliance after having removed the packing;
  • Damage to or replacement of the power supply cord;
  • In the case of a breakdown or malfunction: ask for original spare parts.
  • Only use the appliance to cook food, avoiding all other uses;
  • Check the condition of the appliance after it has been unpacked;
  • Disconnect the appliance from the power supply in the event of malfunction and always before cleaning or maintenance;
  • When not in use, disconnect the appliance from the power supply and turn off the gas valve (if present);
  • Always check to make sure that the control knobs are on the “•”/“o” setting when the appliance is not in use;
  • Cut the power supply cord after disconnecting it from the electrical mains when you decide to no longer use the appliance.
  • The manufacturer will not be held liable for any damages arising out of : incorrect installation or improper, incorrect or unreasonable use..

Installation Instructions for built-in

Installation of Built-in Cooktops

a) If the cabinet(s) located next to the cooktop are higher than the cooktop itself, the cabinet(s) must be installed at least 600 mm from the edge cooktop;

b) Hoods must be installed in accordance with the instructions contained in the installation manual for the hoods themselves, and no less than 650 mm from the cooktop;

c) In the case of the 600 mm cooker hoods, besides following the recommendations in point b), the cabinets should be positioned next to the hood at a height of at least 540 mm from the top since this will make it possible to install the lid and move it correctly. The cabinet should always be installed at a height from the top which allows easy use of pots and pans on the cooker.

d) Should the cooktop be installed directly under a cupboard, the latter should be at least 700 mm (millimetres) from the top, as shown in Figure.

Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 1

e) The dimensions of the cutout for the appliance must be those indicated in the figure. Clamps are provided to fasten the cooktop to counters measuring from 20 to 40 mm in thickness. To fasten the cooktop securely, it is recommended that all the clamps be used.

Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 2

text_image 55 mm 475 mm 555 mm

Fastening Clamps - Assembly Diagram
Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 3

natural_image Technical diagram showing two cross-sectional views of a mechanical joint or bracket (no text or symbols present)

Clamp Position for Clamp Position for H=20mm top H=30mm top

Ariston Thermo PO 740 ES IX - Installation of Built-in Cooktops - 4

text_image Front

Clamp Position for
H=40mm top Back
N.B: Use the clamps contained in the "accessory kit."

f) In the event the cooktop is not installed above a built-in appliance, a wood panel must be inserted as insulation. This panel must be placed at least 20 mm from the bottom of the cooktop itself.

Connecting the gas

The appliance should be connected to a gas cylinder in compliance with current directives. On some models the gas supply can be connected on the left or on the right, as necessary; to change the connection, reverse the position of the hose holder with that of the cap and replace replace the gasket (supplied with the appliance). Remember to install a pressure regulator on the LPG cylinder, which complies with current directive.

Important: check that the supply pressure complies with the values indicated in table 1 "Characteristics of the burners and nozzles" since this will ensure safe operation, correct consumption and ensure a longer life to your appliance.

Connection with hose

Make the connection using a gas hose complying with the the characteristics provided in current directive. The internal diameter of the pipe used is as follows:

- 8mm for liquid gas;

When installing the hose, remember to take the following precautions:

Check that the hose fits firmly into place at the two ends and fix it with clamps complying to current directive. If any of the above recommendations can not be adopted, flexible metal pipes should be used.

Tight control

Important: when installation has been completed, check the pipe fitting for leaks with a soapy solution. Never use a flame. Once the connection has been made, ensure that the flexible metal tube does not touch any moving parts and is not crushed.

Regulation of Air Supply to the Burner

The burners do not need a primary air regulator.

Connecting the supply cable to the mains

Install a normalised plug corresponding to the load indicated on the data plate. When connecting the cable directly to the mains, install an omnipolar circuit-breaker with a minimum contact opening of 3 mm between the appliance and the mains. The omnipolar circuit breaker should be sized according to the load and should comply with current regulations (the earth wire should not be

interrupted by the circuit breaker).

The supply cable should be positioned so that it does not reach a temperature of more than 50^ C with respect to the room temperature, along its length. Before making the connection, check that:

- the limiter valve and the home system can support the appliance load (see data plate);

  • the mains is properly earthed in compliance with current directives and regulations;
  • there is easy access to the socket and omnipolar circuit breaker, once the hob has been installed.

N.B: never use reducers, adaptors or shunts since they can cause heating or burning.

Characteristic of the burners and nozzles

Table 1Liquid Gas
Burner Diameter(mm)By-Pass1/100(mm) (mm) nominal minimNozzle1/100Flowg/h
Fast (R) 90x90 3986 220 50
Semi Fast (S) 65x6528 70 140 25
Auxiliary (A) 45x4528 50 6525
SupplyPressuresNominal (kPa)Minimum (kPa)Maximum (kPa)302535

Ariston Thermo PO 740 ES IX - Connecting the supply cable to the mains - 1

text_image A R S S

PO 740 ES

natural_image Cross-sectional diagram of a mechanical joint or seal assembly (no text or labels)
natural_image Pure mechanical cross-section diagram without any text, numbers, or symbols
natural_image Technical line drawing of a mechanical or electronic component with no visible text, numbers, or symbols.

من الخلف

Ariston Thermo PO 740 ES IX - Connecting the supply cable to the mains - 2

natural_image Cross-sectional diagram of a mechanical assembly with hatched and solid sections (no text or labels)
natural_image 3D diagram showing a gray plastic component and its internal structure with labeled arrows F and D (no text or symbols beyond labels)

Ariston Thermo PO 740 ES IX - Connecting the supply cable to the mains - 3

text_image B A C
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Product information

Brand : Ariston Thermo

Model : PO 740 ES IX

Category : Cooker