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  • Are there candles that burn without soot?"
    The soot-free burning of candles only works under rather "theoretical" conditions in the weightlessness of space. Unfortunately, this only produces a blue, spherical flame. The bright yellowish light that we are so familiar with is missing. The bright glow of candles is only created because tiny soot particles in the flame are heated so much that they begin to glow. Without glowing particles in the candle flame, there is no glow of light that we can enjoy. Soot-free candles would be pointless for our needs.
  • How long does the wick last?
    The fiberglass wick does not burn and theoretically has an unlimited lifespan. Why a replacement wick is occasionally necessary is explained below: With Cerardor and CeraFlare, only wax is burned. The best burning results are achieved with pure paraffin wax. However, the use of candle residue also adds wax impurities to the melting pot, the properties of which can have a negative effect on the burning behavior of the fiberglass wick. It is known that beeswax stops the function of the fiberglass wick. The capillaries in the wick become clogged and no more wax can be transported upwards to the flame. In black candles, soot particles are mixed into the wax to give it color. The soot particles settle on the wick and form a "barrier layer". The barrier layer prevents wax from flowing in. We can only burn wax - not soot! Both examples show that the wick can become unusable due to unfavorable conditions. In this case, it is advisable to replace it with a new wick. A replacement wick costs just abou 1 euro / pc (Mai 2024) and can be easily replaced by the user.
  • Can lamp oil or bioethanol be used as fuel?
    No! Cerardor and CeraFlare are designed for use with candle wax only. Using other fuels can cause dangerous overheating. Our EldoFlare is ideal for the use of bioethanol!
  • What should I do if water has leaked into the melting pot?"
    It depends on the condition of the crucible when the water is added: a) the wax supply is solidified and hard Try to carefully pull the wax block out of the crucible by the wick. The water can then simply be poured off. The wax block is then placed back into the crucible. b) the wax supply is liquid Liquid wax is hot and does not mix with water. The burner should be covered with the extinguishing lid. Then you have to wait! Only when the wax has solidified and become hard should you proceed as described under (a). It can happen that small amounts of water remain in the wick. When you restart the burner, you can tell by a crackling noise. This stops after a few minutes. The trapped water droplets have then evaporated.
  • How to clean the glass cylinder?
    The easiest way to remove soot deposits is with a dry paper towel from the kitchen roll. Remove any wax that sticks to the surface with hot water. Please do not scrape it off with sharp objects.
  • What does the air temperature have to do with the function of the burner?
    Energy is needed to melt the wax supply. The energy required for this is obtained from the burning wax. Excess heat energy is released from the melting pot into the surrounding air. When temperatures fall, more energy is dissipated into the cooler ambient air. Then less energy is available for the melting process. The function of the burner is based on an excess energy balance. This means that the burner releases more energy than is needed for the melting process. However, when temperatures fall, a negative energy balance can arise. More energy is then released into the environment. In some cases, the amount of heat released is no longer sufficient to maintain the melting process.
  • Are there any starting aids for igniting the burner?
    Cerardor is often confused with a candle. You hold a lighter or match to the wick and expect the flame to ignite - like a candle. However, the wick in the melting burner does not work like the wool thread in a candle. With the melting burner, physics must first take over and start the melting process. Only when enough heat has been generated and enough wax has liquefied can the flame pattern typical of Cerardor and CeraFlare be created. Tips for jump-starting the device are listed in the user manual. This can be downloaded as a PDF document in the download area. See also: "How long does the wick last?"
  • Can all candle remains be recycled?
    No. Beeswax candles and black candles are unsuitable. We have listed more information under the question "How long does the wick last?".
  • Do the wicks have to be removed before recycling?
    No. During the melting process, the wicks come off the candles and sink to the bottom of the melting pot. When the wax has completely liquefied, the wicks can be removed from the melting pot using a fork or similar tool.
  • Can the wick be replaced?
    Yes. It is quite easy to change the wick. There are two ways to change the wick. a) Emptying for cleaning purposes : To do this, the wax supply in the melting crucible is allowed to burn down to the "shell". Then the filling is burned down to about 2 cm remaining. Now the flame is extinguished and the wick is pulled out of the heating coil. The remainder in the melting pot contains wick threads, glitter and other impurities from the recycled candles. This remainder is completely disposed of. Now a new wick can be pulled into the heating coil and placed back into the (empty) melting pot. Only then can the wax residue be added, which is then liquefied in the water bath. Take another teaspoon and drizzle liquid wax over the wick. Now let the water bath cool down and remove the melting pot with the new wick. b) Changing the wick without emptying the crucible: To do this, the melting pot is placed in a hot water bath to liquefy the wax. When the wax has completely melted, remove the heating coil and pull out the wick. A new wick can now be pulled into the heating coil and then inserted back into the still liquid wax. Now the wick tip must be sprinkled with wax. The water bath can then cool down and the melting pot can be removed.
  • Can I order a wick as a spare part?
    Yes! Our articles are designed in such a way that individual parts can also be ordered as spare parts.
  • Is the Ardor stainless steel bowl waterproof?
    Yes. There are no drainage holes. When used outdoors, a drainage hole can be subsequently so that excess water can drain away.
  • What is the support ring needed for?
    The supporting ring is a usefull option for Ardor-Bowls. Arround the outer ring a filling with sand or earth can be made. The center part of the bowl remains empty and can be filled with for example a lantern. .
  • What is the calorific value of bioethanol
    The calorific value of bioethanol is 7.4 kWh/kg. This is about 2/3 of the value for heating oil at 11.8 kWh/kg. (Information from Wikipedia)
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