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This document serves as an instruction manual for a built-in gas hob, providing comprehensive guidance on its operation, maintenance, and installation. It is designed to ensure safe and efficient use of the appliance, covering various models including PG9051G-CC7B, PG9051G-CCB, PG9051S-CC7I, PG3020BG-DCB, and PG6040BG-H1C2BI1. Users are strongly advised to read the manual thoroughly before operation and retain it for future reference.
The gas hob is equipped with multiple burners of varying sizes and power levels, allowing users to select the most appropriate burner for their cookware. These burners are controlled by corresponding knobs, offering settings for OFF, High, and Low flame. Some models feature a safety device that requires the knob to be pressed for approximately 6 seconds until the flame is lit and warmed up, ensuring gas flow is interrupted if the flame accidentally goes out. Other models include an igniter, which requires pressing an electric ignition button before turning the knob counter-clockwise to the "High" setting. To light a burner, simply press and turn the corresponding knob counter-clockwise to the "High" setting, holding it until the burner lights. If the flame extinguishes accidentally, users should turn off the gas with the control knob and attempt to relight it after at least one minute. To turn off a burner, the knob should be rotated clockwise until it stops at the "•" setting.
The manual emphasizes the importance of proper cookware selection for optimal performance. Users should use cookware with a flat bottom and keep the lid on to prevent the flame from reaching the sides of the pot or pan. Once the contents come to a boil, turning the knob to "Low" is recommended to conserve energy. The flame size can be adjusted steplessly, with a large flame recommended for initial cooking phases to boil food quickly, and a saving flame position for maintaining cooking. It is crucial to avoid adjusting the flame between the Burner OFF and Burner ON large flame positions.
Maintenance is key to extending the lifespan of the gas hob. Before any cleaning or maintenance, the appliance must be disconnected from the electrical power supply, including battery power if applicable. Enameled parts and the glass top should be washed with warm water, avoiding abrasive powders or corrosive substances. Removable burner parts should be regularly washed with warm water and soap, ensuring all caked-on substances are removed. The automatic igniter pin's end must be cleaned carefully and regularly to ensure normal ignition. Stainless steel top plates and other steel parts should be rinsed thoroughly with water and dried by blowing, especially after contact with high-concentration calcareous water or corrosive detergents. Spills should be cleaned up promptly. After using the glass hob, the surface should be cleaned with a damp cloth to remove dust or food residues, using warm water and a non-corrosive detergent. For stubborn residues, a cleaning scraper can be used while the cooking surface is warm, followed by cleaning with a suitable product and paper towels. A transparent protective film can be applied while the surface is still hot to prevent further dirt and protect against damage from high-sugar content foods. Abrasive sponges, chemically aggressive cleaners, oven sprays, and stain removers should not be used. Grill/pan supports are best cleaned while still hot; after cooling, food residues or grease should be removed before rinsing with water. If gas valves become stiff over time, they should be cleaned and greased by a technician authorized by the manufacturer.
The manual also addresses troubleshooting common issues. If the gas hob fails to work or operates improperly, users should first check for interruptions in gas and electrical supplies and ensure gas valves are open. If a burner cannot be lit or the flame is uneven, check for clogged gas holes, correctly fixed movable burner parts, and absence of air flow around the cooking surface. If the flame does not stay lit with a thermocouple-equipped burner, ensure the knob is pressed all the way, held long enough to activate the thermocouple, and that gas holes near the thermocouple are not clogged. If the flame goes out when turning the knob to "Low," check for clogged gas holes, air flow, and proper minimum adjustment. If cookware is unstable, verify it has a flat bottom, is centered correctly on the burner, and that support grids are not inverted. If problems persist after these checks, users should contact customer service, providing details of the problem, hob model number, and order number. Unauthorized technicians or spare parts not from the manufacturer should be avoided.
Installation instructions for built-in gas hobs are provided for qualified installers. The appliance must be installed in permanently ventilated rooms, with a ventilation system to exhaust smoke and gases. The room must allow for adequate air influx for combustion, with an inner cross-section of at least 15.5 square inches (100 cm²) and unobstructed. Hobs without safety devices require double the ventilation volume, or indirect ventilation through adjacent rooms. LPG tanks should be stored in well-ventilated areas, not below ground level, and away from heating sources. The hob can be installed next to cabinets, provided its height does not exceed the hob itself. Specific clearances for furniture, hoods, and cupboards are detailed. The cooktop should be placed on a stable, smooth surface and secured with brackets. If not installed over a built-in oven, a wooden panel must be inserted for insulation at least 0.8 inches (20 mm) from the hob's bottom. When installed over an oven, the oven should be placed on two wooden strips, and a space of 1.8-22 inches (45 x 560 mm) must be left from the back side for joining cabinet surfaces. If the oven lacks forced ventilation, adequate air inlets and outlets must be ensured for cabinet ventilation.
Gas connection must be performed by a registered installer, ensuring an approved gas tap is fitted for isolation. The hob must be connected to the gas mains or liquid gas according to regulations, and only if compatible with the gas type. Pressure regulators conforming to regulations should be used for liquid gas tanks. Gas pressure must conform to the specifications in the "Burners and Nozzle Specifications" table for safety and performance. Connections to non-flexible (copper or steel) or flexible steel tubes must be made without creating stress points. The hob is fitted with an adjustable "L" shape connector and gasket; the connector should be dismounted and the gasket replaced. The feeding connector is threaded 1/2 gas cylinder. Flexible metal tubes must not exceed 6.6 feet (2m) and should not touch moving parts or be crushed. After installation, all connections must be checked for leaks using soapy water, never flame.
Electrical connection requires a tripolar electrical supply cord, designed for alternating current, with the earthing wire identified by yellow-green color. If installed over an electric oven, electrical connections for both hob and oven should be independent. The supply cord should be fitted with a standard plug or connected directly to the mains via a single pole switch with a minimum contact opening of 0.12 inches (3mm). The power supply cord must be positioned to avoid exceeding 122°F (50°C) above room temperature. Before connection, ensure the fuse and electrical system can handle the load, the supply system has an efficient earth hook-up, and the plug or switch is easily accessible. Wiring colors are specified for proper connection.
The manual also includes instructions for converting the gas hob to different gas types, such as from LPG to natural gas or vice versa. This involves replacing burner nozzles according to specified guidelines and adjusting the reduced valve flow by loosening the adjustment spindle and adjusting the flame. Valve adjustment should be done with the control knob at the Burner ON saving flame position, using a tiny screwdriver after removing the knob. The adjusted flame should be tested by heating the burner at full open for 10 minutes, then turning the knob to the saving setting; the flame should not extinguish or move to the nozzle. A label indicating the new gas type must be placed on the appliance after conversion.
Finally, the manual provides important notices regarding installation conditions, adjustment conditions stated on the rating label, and the requirement for proper ventilation, as the gas hob produces heat, moisture, and combustion products. Customer service information is provided for further questions or assistance.
General| Hob type | Gas |
|---|---|
| Number of burners | 5 |
| Brand | Liberty |
| Model | PG9051G-CC7B |
| Ignition Type | Automatic |
| Gas Type | Natural gas/LPG |
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