Robam Gas Hob User Manual

Contents

• Important Safety Information
• Product Parameter
• Installation Instruction
• Operation Methods
• Clean And Maintenance
• Common Faults And Solutions
• Accessories
• Circuit Diagram
• Electrical Connection
• After Sale Service

Important Safety Information

This product is an embedded household gas stove. Your safety is of utmost importance to Robam Appliances Co., Ltd. Please read this instruction booklet carefully before installation or use. If you are unsure of any information, contact Robam Appliances Co., Ltd.

General Information

• Designed for domestic household use for cooking and frying.
• Adjacent furniture and installation materials must withstand a minimum temperature of 85°C above ambient room temperature.
• Damage caused by installation contravening this temperature limit is the owner's liability.
• Using the appliance for other purposes without Robam Appliances Co., Ltd.'s express agreement invalidates warranty claims.
• Do not use the appliance to store items or as a work surface.
• Do not modify the appliance.
• Do not store or place flammable materials near the appliance.
• Repairs may only be carried out by Robam Appliances Co., Ltd. service engineers or authorized agents.

General Safety

• Installation must be carried out by an authorized person in accordance with regulations.
• Ensure units and work surfaces meet relevant standards.
• Ensure local distribution conditions (gas type and pressure) are compatible with the appliance.
• The appliance cannot be connected to a combustion product evacuation device.
• Install and connect in accordance with current installation regulations, paying attention to ventilation requirements.
• The use of a gas cooking appliance produces heat and moisture; ensure the kitchen is well-ventilated. Keep natural ventilation holes open or install a mechanical ventilation device (extractor hood).
• This appliance is for cooking purposes only; do not use for room heating.
• Prolonged intensive use may require additional ventilation.
• Use care to avoid burns.
• Keep electrical connection cables away from the hot hob surface or cookware.
• Do not leave the appliance unattended while cooking.
• Ensure all cooking zones are switched off after use.

Safety Precautions (Visuals)

• Do not place anything (e.g., a flame tamer or asbestos mat) between the pan and pan support, as this may cause serious damage to the appliance.
• Do not remove the pan support and enclose the burner with a wok stand, as this will concentrate and deflect heat onto the hotplate.
• Do not use large pots or heavy weights that can bend the pan support or deflect flame onto the hotplate.
• Locate the pan centrally over the burner so that it is stable and does not overhang the appliance.
• Use only a wok support supplied or recommended by the manufacturer.

Child Safety

• Children should be supervised not to play with the appliance.
• This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless supervised or instructed by a responsible person.
• Do not use or store flammable materials in or near the appliance.
• Do not spray aerosols in the vicinity of the appliance while it is in operation.
• Do not modify the appliance.
• Do not use the appliance as a space heater.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons.
• Incorrect installation may cause personal injury or damage and invalidate warranty claims.
• Installation must comply with local building, gas authority codes, and electricity regulations.
• The appliance must be installed and serviced only by an authorized person.
• Ensure the gas appliance is suitable for the gas type for which it was set at the factory. Refer to the local gas network operator or gas supplier if unsure.
• WARNING: 240 VOLTS DISCONNECT POWER BEFORE SERVICING UNIT.
• Robam Appliances Co., Ltd. strongly recommends preventing babies and young children from being near the appliance. All surfaces will be hot during and after use.
• Ensure younger family members in the kitchen are kept under close supervision.
• Older children should only use the appliance when supervised.
• Supervise children to ensure they do not play with the appliance.

During Use

• Remove any film or stickers from the hob surface before use.

Product Parameter

Notes:

• Parameters are for reference only and subject to the nameplate of the stove.
• Opening size of embedded stove subject to opening template in carton.
• Company reserves the right to modify designs and specifications.
• Connection: Rp1/2" (ISO R7).
• Ensure gas pressure conforms to table "Nozzle and burner characteristics" for safety and durability.
• Electrical supply: 220-240V, 50-60Hz, 2.6W.

Installation Instruction

Installation must be carried out by an authorized person in accordance with current regulations.

• For appliances intended for use with a flexible connection to a fixed gas supply system, confirm the gas type with the local gas supplier.
• This appliance must be correctly installed by an authorized person strictly in accordance with manufacturer's instructions and relevant standards. Refer to the specific section of this booklet that refers to installation.
• Robam Appliances Co., Ltd. is not responsible for personal injury or property damage caused by improper use or installation.
• Robam Appliances Co., Ltd. does not recommend installation on any type of marine vessel.

Positioning

Adjacent furniture must withstand a minimum temperature rise of 65°C above ambient room temperature during use.

Clearances required when fitting without a cooker hood

Diagram showing clearances: 150mm side, 55mm rear, 600-750mm above, 400mm above.

Clearances required when fitting with a cooker hood

Diagram showing clearances: 150mm side, 55mm rear, 600-750mm above, 400mm above.

The stove belongs to Class 3 appliances and needs to be embedded in a cabinet or a 600mm deep operating table, meeting minimum distance requirements:

• Distance between stove edge and side/rear wall: at least 55mm.
• Distance between highest point of stove surface and bottom surface of horizontal surface above: 600-750mm.
• Distance between stove surface and bottom of horizontal surface above: at least 400mm. If less than 400mm, offset from outer edge by at least 55mm.
• Distance between area around stove and combustible materials: 55mm.
• Stove can be placed in the kitchen.
• Important: Cannot be installed in a bathroom or shower room.
• Minimum clearance from combustible surface: 200mm horizontal distance from periphery of gas burner (AS/NZS 5601.1).
• If horizontal clearance is less than 200mm, vertical surface must be protected by non-combustible material for 150mm above cooktop surface.

Diagram showing protected surface (ceramic tiles or other approved material).

Unpacking the appliance

Remove any protective wrapping before installing.

Diagram showing dimensions for JZT-9B7H50/JZY-9B7H50 and JZT-7B7H32/JZY-7B7H32 models.

Open a hole on the countertop corresponding to the picture.

• Important: Gap between stove bottom and lower surface should be at least 50mm.
• Minimum horizontal distance between combustible materials and gas burners: 200mm (AS/NZS 5601.1).
• The stove is equipped with fixed hooks for countertops 20mm to 40mm thick. Use all hooks for proper securing.

Important Information

An authorized person must undertake installation and service work in compliance with regulations.

Ventilation requirements

• The room must have adequate air supply as per AS/NZS 5601.1.
• Rooms may require permanent ventilation if they have opening windows or equivalent.
• Consult AS/NZS 5601.1 for air vent requirements if other fuel-burning appliances are in the same room.
• Ensure the room is well-ventilated; keep natural ventilation holes open or install a mechanical ventilation device (extractor hood).
• Prolonged intensive use may require additional ventilation.
• This hob is not fitted with a device for discharging combustion products; follow ventilation rules and regulations.
• Walls behind and near the hob should be resistant to heat, steam, and condensation.
• Minimum dimension of ventilating openings: 137 cm² (direct to outside) or 273 cm² (via adjacent room).
• Minimum vertical dimension of any free ventilation opening: 6mm.

Gas Safety (Installation and Use) Regulations

IMPORTANT: Appliance must be connected to gas supply using a 15mm x 1/2" conical thread female coupler, seal, and copper pipe.

• All gas appliances must be installed by competent persons in accordance with current gas safety regulations.
• Ensure compliance with the law for your interest and safety.
• Authorized persons work to safe standards. Hob must be installed according to AS/NZS 5601.1. Incorrect installation can invalidate warranty, liability claims, and lead to prosecution.

Gas connection

• THIS APPLIANCE MUST BE INSTALLED BY A COMPETENT PERSON in accordance with current versions of the following.
• HOSE ASSEMBLY MUST BE RESTRAINED TO PREVENT ACCIDENTAL CONTACT WITH THE FLUE OF AN UNDERBENCH OVEN.

Flexibility hose connection

• Flexibility hose must be certified to AS/NZS1869 - class B or class D. Inner diameter: Ø10mm. Maximum length: 1.2m. Gas connection: Rp1/2" conical thread.
• Hose assembly must be restrained from accidental contact with the flue outlet of an under bench oven.
• Hose assembly suitable for connection to a fixed consumer piping outlet: Hotplates at 800mm to 850mm above floor, outside appliance width, 250mm distance.

Installation diagram

Diagram showing steps for connecting flexible hose: Remove connector cap, install one-way connector, connect flexibility hose coupler, connect other end to gas regulator.

Diagram showing inlet connection region for flexible hose with dimensions.

Pressure Test Point

Provided in the gas regulator.

• Remove screw, connect hose from pressure gauge.
• Turn on gas to semi-rapid burner and manually light it.
• Pressure is shown on the data plate.
• To increase pressure: loosen locking nut and turn clockwise.
• Disconnect gauge and replace test point screw.
• WARNING: Check gas regulator positioning. Arrow on back must face connector.
• IMPORTANT: Perform gas leakage test upon completion. (Paint tenuous and neuter cleaning solution on connecting part, open valve. If air bubbles appear, close valve, tighten screw nut, and re-test.)

Test the appliance

• After installation, ignite all burners to check operation.
• Flame must not go out on lowest setting or when control is turned quickly from highest to lowest setting.
• Flame must have a distinctive and visible core on the highest setting.
• Refer to "Common Faults and Solutions" for any problems.

Flame appearance:

• Normal (Combustion well)
• Yellow flame (Air deficiency)
• Left flame (Air superabundance)

Notes:

• Before beginning, turn off gas and electricity supply.
• Gas pressure must be set by an approved gas fitter. A full operational test and leakage test must be performed by the gas fitter after installation.
• Gas pressure must be set as shown on the data plate (natural gas 1kPa).
• Minimum flow adjustment is not needed as it's pre-adjusted during manufacturing. Contact local dealer if minimum flow is not working properly.

My appliance isn't working correctly

• DO NOT ATTEMPT TO REPAIR THE APPLIANCE YOURSELF.
• If an engineer attends during the guarantee period and the problem is not an appliance fault, you may be liable for costs.
• The appliance must be accessible for necessary repairs. If installation prevents access or risks damage, the engineer may not complete the repair.

Operation Methods

IMPORTANT: Robam Appliances Co., Ltd. operates a policy of continuous improvement and reserves the right to adjust and modify products without prior notification.

Before first use

• Clean the hob surface (See "Cleaning and Maintenance" section).

Control Panel Symbols

• Gas Off
• Ignition position
• Maximum Setting
• Minimum Setting

The minimum setting is at the end of the anti-clockwise rotation of the control knob.

• All operation positions must be selected between the maximum and minimum position.
• Never select a knob position between the maximum and off position.
• The symbol on the control panel indicates which gas burner the knob operates.
• The appliance is fitted with an automatic ignition with flame failure safety device on each burner, which stops gas flow if the flame goes out.

To ignite a burner:

• Check burner, cap, and other parts are correctly positioned. Confirm knob position (Picture 1).
• Press and hold the control knob to operate automatic ignition.
• Ignition: Press control button, then rotate counterclockwise 90 degrees (Large flame). Hold the control knob for 15 seconds after the flame ignites. If the burner does not light after 15 seconds, stop and wait 1 minute before re-attempting.
• After the 15-second interval, regulate the flame by turning the control knob anti-clockwise to a suitable level (between maximum and minimum positions).
• To switch off, turn the control knob fully clockwise to the gas off position (Picture 1).
• Extinguish: The burner extinguishes when the knob turns to the gas off position (Picture 1).
• Hob use at low temperature is the same as at normal temperature.

Energy saving tips

• Burner flame must not extend beyond the pan diameter.
• Keep a lid on the pan while cooking when possible.
• Cook vegetables with minimal water to reduce cooking times.
• IMPORTANT: Always place pans centrally over hob burners and ensure handles do not obstruct other burners.

Timed operation method

This is a multi-head timed stove. Familiarize yourself with the function buttons.

Models and Controls

• Model: JZT-9B7H50 / JZY-9B7H50
  Controls: On/Off, Time +, Time -, Switch. Furnace head indicator light.
• Model: JZT-9B7H31F / JZY-9B7H31F
  Controls: On/Off, Time +, Time -, Switch. Furnace head indicator light.
• Model: JZT-7B7H32 / JZY-7B7H32
  Controls: On/Off, Time +, Time -, Switch. Furnace head indicator light.

Operation Steps

1. Press down and turn the knob counterclockwise to ignite the stove head.
2. When the furnace head enters normal combustion, long press the timer button (icon on), then short press the corresponding furnace head indicator light (icon flashing). The digital tube defaults to flashing and displays "5" (minutes).
3. Maximum timing duration is 180 minutes. Timing varies from 0 to 180 minutes.
4. Adjust timing time by short pressing "+" or "-" keys, or long press to quickly adjust. If no operation within 5 seconds, the display stops flashing, starts timing, and begins countdown.
5. To readjust timing during the process, briefly press the corresponding furnace indicator light, the display flashes, then adjust as above.
6. To cancel timing: long press the furnace indicator light. The digital tube display turns off, exiting timing state. Alternatively, set timer to "0"; after ~5 seconds, the display turns off.
7. When multiple furnace heads are on, short press the indicator light or "<0xF0><0x9F><0x94><0x9B>" key to view remaining time. The selected head's indicator flashes, others remain on.
8. In the last 10 seconds of countdown, the indicator light flashes rapidly with a buzzing prompt. The display switches to current stove countdown, and the flame automatically extinguishes when the timer ends. The display shows "En". Turning the knob to "OFF" releases the alarm and turns off the display.

Timing function code and processing method

Attention:

• If troubleshooting fails, contact the company's maintenance department or service outlet.
• If an alarm occurs during timed state, the timed function is cancelled, and shutdown action is executed.
• The stove cannot be ignited during an alarm period.

Clean And Maintenance

Cleaning

• CLEANING OPERATIONS MUST ONLY BE CARRIED OUT WHEN THE HOB IS COOL.
• THE APPLIANCE SHOULD BE DISCONNECTED FROM YOUR MAINS SUPPLY BEFORE COMMENCING ANY CLEANING PROCESS.
• Cleaning should be carried out on a regular basis.
• Disconnect from mains and ensure it is cool before cleaning.
• Take great care during cleaning.
• Do not use a steam jet or high-pressure cleaning equipment.

After each use

• Remove pan stands and wipe the appliance with a soft, damp cloth with warm neutral detergent.
• Dry the appliance with a soft, clean cloth.
• Regularly use an appropriate stainless steel cleaner and polish on stainless steel surfaces.

Cleaning the hob top

• Remove residues with warm neutral detergent.
• Abrasive cleaners or sharp objects will damage the hob surface; use warm neutral detergent.
• It is easier to clean deposits while the hob surface is warm, but ensure it has cooled sufficiently before touching.

Cleaning the hob burners

• Clean hob burners weekly or more frequently if soiled.
• Remove burners by pulling upwards from the hob top.
• Soak for about ten minutes in hot water and a little detergent.
• Wipe and dry carefully after cleaning.
• Before replacing burners, ensure the gas jet is not blocked.
• IMPORTANT: Reassemble burners in the original way.
• Ensure hob surface, pan stands, and hob burners have cooled before touching.

Diagram showing burner components: Internal cap, External cap, Lid Support, Electrode needle, Thermocouple, Burner.

Common Faults And Solutions

Accessories

Diagrams of Pressure Regulator, Inlet Elbow, Auxiliary Pot Rack, Fixed Hook, M4 x 12 Screw, M4 x 50 Screw.

Circuit Diagram

Diagram showing the electrical circuit of the gas hob, including solenoid valve, power line, linkage, timer, power panel, switch, switch harness, ignition unit, and electrodes.

Set pressure regulator

Attention: The pressure regulator defaults to natural gas pressure setting. For hydraulic petroleum gas, unscrew the screws on the cover to switch.

Diagram showing pressure regulator adjustment for natural gas (low outlet pressure) and hydraulic petroleum gas (high outlet pressure).

Electrical Connection

WARNING! Electrical Shock Hazard

• Plug into a grounded 3-prong outlet. Do not use an adapter. Failure to follow instructions can result in death, fire, or electrical shock. Do not remove the ground prong.
• If codes permit a separate ground wire, it is recommended that a qualified electrician determine the ground path is adequate. Check with a qualified electrician if unsure about grounding. Do not ground to a gas pipe.
• The outlet must be checked by a qualified electrician for correct polarity.
• This appliance, when installed, must be electrically grounded in accordance with local codes.

Recommended ground method

For personal safety, this cooktop must be grounded. It is equipped with a 3-prong ground plug. Plug into a matching 3-prong ground-type outlet, grounded according to local codes. If a matching outlet is not available, the customer is responsible for having a properly polarized and grounded 3-prong outlet installed by a qualified electrician.

Diagram illustrating a grounded outlet box, earthed outlet, and earthed plug.

WARNING VERY IMPORTANT: Before any operation of maintenance, disconnect the appliance from the electrical main supply.

After Sale Service

If the manual is lost, you can send an email to overseas@robam.com to request an electronic manual.