Häfele nagold 538.01.722

Questions and Answers

J
Jordan TurnerJul 31, 2025
What to do if I smell gas from my Hafele Hob?
- T
  Theodore DawsonJul 31, 2025
  If you smell gas, stop using the Hafele Hob immediately. Close the middle valve, open a window to ventilate the area, and contact our service center from a phone outside the building due to potential gas leakage.
M
michael34Aug 4, 2025
Why does the flame go out when using my Hafele Hob?
- S
  sara58Aug 4, 2025
  If the flame goes out during use on your Hafele Hob, it may be due to a few reasons. The flame supervision device might be contaminated, in which case you should clean it. Alternatively, if food has boiled over and extinguished the flame, turn off the burner knob, wait one minute, and then try to reignite the zone. A strong draught could also be the cause; turn off the zone, check for draughts (like open windows), wait a minute, and reignite.
M
Michael CarterAug 8, 2025
Why is the flame on my Hafele Hob yellow?
- R
  Robert LongAug 8, 2025
  A yellow flame on your Hafele Hob could be caused by clogged holes in the flame spreader, so clean the flame spreader. It could also mean that a different type of gas is being used, so check the gas type.
F
Franklin HughesAug 13, 2025
What to do if my Hafele Hob is badly ignited?
- M
  Michael WilsonAug 13, 2025
  If your Hafele Hob is badly ignited, ensure the gas supply is fully open. Check that the burner lid is correctly assembled. If the ignition plug has any foreign material on it, wipe it with a dry cloth. If the burners are wet, dry them lightly. Lastly, if the holes in the flame spreader are clogged, clean the flame spreader.
S
Shawn HannaAug 17, 2025
How to fix a Hafele Hob that is not ignited?
- T
  Tonya ReidAug 18, 2025
  If your Hafele Hob is not igniting, check the electricity supply to ensure there is a spark. Make sure the burner lid is correctly assembled. Also, verify that the gas supply is fully open.
L
lauren53Aug 21, 2025
Why is the flame unstable on my Hafele Hob?
- P
  perrydavidAug 22, 2025
  An unstable flame on your Hafele Hob may indicate that the burner lid is not assembled correctly. Ensure that the burner lid is properly assembled.
S
Seth TaylorAug 27, 2025
Why does my Hafele Hob make noise when ignited?
- U
  udayAug 27, 2025
  If your Hafele Hob makes noise when combusted and ignited, it is possible that the burner lid is badly assembled. Make sure to assemble the burner lid correctly.

Summary

Description of the Appliance

Accessories

Lists included accessories such as brackets, sponges, screws, and injectors.

Safety and Energy Saving Advice

Cleaning and Maintenance

Pan Support and Control Handles

Cleaning instructions for pan supports and control handles with damp cloth and detergent.

Top Plate Cleaning

Wipe top plate with warm water and detergent. Remove salty foods promptly to avoid corrosion.

Installing the Appliance

Sponge Application

Details on the thickness and width of the sponge used for sealing the appliance.

Securing Brackets

Instructions for placing and tightening brackets to secure the hob to the worktop.

Gas Adjustment

Changing Burner Injectors

Procedure for replacing injectors for different gas supplies, requiring careful reassembly.

Adjusting Minimum Flame Level

Steps to adjust the minimum flame level using a screwdriver on the tap shaft.

This document is an instruction manual for a Nagold by Häfele Gas Hob, models 538.01.722 and 538.01.732. It provides comprehensive information on installation, usage, safety, and maintenance.

Function Description:

The Nagold by Häfele Gas Hob is a domestic cooking appliance designed for preparing food using gas burners. It features automatic ignition with a flame failure safety device on each burner, which automatically stops the gas flow if the flame goes out. The appliance is intended for domestic use only and not for commercial or industrial purposes.

Important Technical Specifications:

Model 538.01.722:

Pan Support: Cast Iron
Wok Pan Support: N/A
Top Plate: Stainless Steel
Dimension (WDH): 59050095 mm
Ignition Device: Continuous Ignition Type
Gas Connection: G1/2 thread
Electric Supply: 110~240Vac, 50Hz/60Hz, 2W
Burner Feature: Triple-Crown (1), Semi-rapid (2), Auxiliary (1)
Total Heat Input: 7.8kW (568g/h)
Heat Input and Orifice Size Marked (mm):
- Work Burner: 3.3kW (241 g/h)
- Semi-rapid: 1.75kW (127g/h)
- Auxiliary-rapid: 1.0kW (73g/h)
Orifice Sizes:
- G30 50mbar: Work burner 0.76, Semi-rapid 0.58, Auxiliary 0.43
- G31 37mbar: Work burner 0.93, Semi-rapid 0.65, Auxiliary 0.50
- G30 29mbar: Work burner 0.93, Semi-rapid 0.65, Auxiliary 0.50
- G20 20mbar: Work burner 1.28, Semi-rapid 0.97, Auxiliary 0.72
- G25 25mbar: Work burner 1.36, Semi-rapid 0.95, Auxiliary 0.70

Model 538.01.732:

Pan Support: Cast Iron
Wok Pan Support: N/A
Top Plate: Glass
Dimension (WDH): 600510110 mm
Ignition Device: Continuous Ignition Type
Gas Connection: G1/2 thread
Electric Supply: 110~240Vac, 50Hz/60Hz, 2W
Burner Feature: Triple-Crown (1), Semi-rapid (2), Auxiliary (1)
Total Heat Input: NA (Not Available in the provided table, but burner heat inputs are identical to 538.01.722, suggesting similar total output)
Heat Input and Orifice Size Marked (mm): (Identical to Model 538.01.722)
- Work Burner: 3.3kW (241 g/h)
- Semi-rapid: 1.75kW (127g/h)
- Auxiliary-rapid: 1.0kW (73g/h)
Orifice Sizes: (Identical to Model 538.01.722)
- G30 50mbar: Work burner 0.76, Semi-rapid 0.58, Auxiliary 0.43
- G31 37mbar: Work burner 0.93, Semi-rapid 0.65, Auxiliary 0.50
- G30 29mbar: Work burner 0.93, Semi-rapid 0.65, Auxiliary 0.50
- G20 20mbar: Work burner 1.28, Semi-rapid 0.97, Auxiliary 0.72
- G25 25mbar: Work burner 1.36, Semi-rapid 0.95, Auxiliary 0.70

Usage Features:

Control Knobs: Each burner has a control handle with symbols indicating "gas off" (black circle), "maximum setting" (large flame), and "minimum setting" (small flame). The minimum setting is at the end of the anti-clockwise rotation.
Automatic Ignition: To ignite a burner, press and turn the control knob anti-clockwise to the maximum position. Keep the knob depressed for 15 seconds after the flame lights to ensure the flame failure safety device is engaged. If the flame doesn't light within 15 seconds, stop and wait at least 1 minute before trying again.
Flame Regulation: After ignition, adjust the flame by turning the control knob anti-clockwise between the maximum and minimum positions.
Switching Off: To turn off a burner, turn the control knob fully clockwise to the "gas off" position.
Power Failure: In case of power failure, burners can be lit manually using a match.
Pan Diameter: The manual provides a table for recommended pan bottom diameters for each burner type (Triple-Crown, Rapid, Semi-Rapid, Auxiliary) to ensure efficient cooking and prevent gas waste.
Cookware Guidelines:
- Use cookware suitable for each burner to avoid wasting gas and discolouring the cookware.
- Place a lid on cookware to save energy.
- Use pots, saucepans, and frying pans with a thick, flat bottom.
- Always place cookware directly over the burners, not to one side.
- Place cookware on top of the trivet.
- Handle cookware carefully when on the burner.
- Do not use small diameter cookware on large burners.
- Do not use pans with convex or concave bottoms.
- Avoid cooking without a lid or with the lid half off.
- Do not place cookware on one side of a burner as it could tip over.
- Do not use cookware with a large diameter near controls that could cause overheating.
- Never place cookware directly on top of the burner without a trivet.
- Do not place flame tamers, asbestos mats, or similar between the pan and pan support.
- Do not use excessive weight or hit the cooktop with heavy objects.
- It is not recommended to use roasting pans, frying pans, or grill stones simultaneously on several burners due to potential heat build-up.
- Turn down the flame once liquid starts boiling to simmer.
Safety Advice:
- Always use heat-resistant pot holders or gloves.
- Do not let pot holders come near open flames.
- Ensure pot holders are not damp or wet.
- Only use burners after placing pots and pans on them; do not heat empty pots.
- Never use plastic or aluminum foil dishes.
- Ensure electrical appliance cables do not contact hot surfaces.
- Do not use tea towels or similar in place of pot holders.
- If using glass cookware, ensure it's designed for top plate cooking. If the glass surface cracks, switch off the appliance to avoid electrocution.
- Turn cookware handles towards the side or center of the top plate to minimize burns, ignition of flammable materials, and spillage.
- Turn burner controls off before removing cookware.
- Watch fried foods carefully at high flame settings.
- Heat fat slowly and watch it.
- Ensure foods for frying are as dry as possible to prevent bubbling and spillage.
- Never move a pan of hot fat until completely cool.

Maintenance Features:

Cleaning Operations: Must be carried out when the appliance is completely cool and disconnected from the mains supply. Do not use a steam jet or high-pressure cleaning equipment.
Cleaning Agents: Use water and a little washing-up liquid. Avoid abrasive or caustic cleaning agents, nylon brushes, metal brushes, acidic/alkali detergents, edible oil, abrasives, thinner/benzene.
Pan Support, Control Handles:
- Remove pan supports.
- Clean pan supports and control handles with a damp cloth, washing-up liquid, and warm water. Soak for stubborn soiling.
- Dry thoroughly with a clean soft cloth.
Top Plate:
- Regularly wipe with a soft cloth wrung out in warm water with a little washing-up liquid.
- Dry thoroughly after cleaning.
- Promptly remove salty foods or liquids to prevent corrosion.
- Stainless steel parts may discolour over time; clean with a suitable stainless steel product after each use.
Burners:
- Remove burner lids and flame spreaders by pulling them upwards.
- Soak them in hot water and a little detergent.
- Clean, wash, and dry carefully, ensuring flame holes are clean and dry.
- Wipe fixed parts of the burner cup with a damp cloth and dry.
- Gently wipe the ignition device and flame supervision device with a well-wrung-out cloth and dry with a clean cloth.
- Ensure the injector is not blocked before reassembling.
- Reassembly: Place the flame spreader onto the burner cup, ensuring the ignition and flame supervision devices extend through their holes and the spreader clicks into place. Position the burner lid onto the flame spreader, ensuring retaining pins fit into recesses.
- Important: Replace parts in the correct order, do not mix up top and bottom, and ensure locating pins fit exactly into notches.
Gas Adjustment (Conversion):
- Only a qualified technician should perform gas conversion.
- Turn off gas and electricity supply before starting.
- Change Injector: Remove pan support, burner lid, and flame spreader. Unscrew the injector with a 7mm box spanner and replace it with the correct injector for the new gas supply. Reassemble and tighten.
- Adjust Minimum Flame Level: Turn taps to minimum. Remove the knob and use a small bladed screwdriver in the center of the tap shaft to adjust the flame. The correct flame length is 3-4mm. For butane/propane gas, screw the adjusting screw tightly in. Refit the knob. Test by quickly turning from maximum to minimum flow; if the flame goes out, readjust. Repeat for all gas taps.
- Post-Conversion: A qualified technician must mark "V" on the rating plate to match the new gas category and perform a full operational test and leakage test (e.g., with soap water or a gas detector). Do not dismantle the tap shaft; replace the whole tap if malfunctioning. Ensure the injector is not blocked before placing burners back.

Environmental Information:

Dispose of packaging safely and environmentally.
When disposing of an old appliance, make it unusable by cutting off the cable.
The product is marked for separate disposal from household waste at the end of its life to promote sustainable reuse of material resources and prevent harm to the environment.
Household users should contact their retailer or local government office for recycling information.
Business users should contact their supplier for disposal terms and conditions. The product should not be mixed with other commercial wastes.