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Maintenance and Cautions of VN-1800 lab furnaces
n When power on, if you cannot hear a sound from cooling fan, please don’t continue to operate. You must shut down power to check or replace the cooling fan. n During furnace running, please don’t touch furnace to avoid any high temperature burn. n Before operating the furnace please must place the alumina insulation blockbehind the front door of the furnace for good insulation performance. n Please don’t open the front door of the furnace above 300℃ to prevent insulation inside furnace from cracking. n If the furnace is used at first time or not use for long time, please preheat the furnace at 300℃ for at least 2 hours to remove moisture inside to avoid chamber cracking. n MoSi2 heating element is only suitable for using in air or inert gas envoriments. Other active gas, such as H2, Cl2 and SO2, will damage heating element. n Please don’t use the furnace at 400 – 700℃ temperature range for long time because MoSi2 heating element will be easy to be oxidized in the temperature range. n MoSi2 heating element is very brittle. Please pay a great attention during moving and handling. Also, please avoid rapid heating and cooling to avoid the heating element broken. Max. 10℃/min heating or cooling rate is suggested. n Please check heating element for every three months to see if they are in good connecting condition. If connection gets loose, please open case and tighten them properly. n Please always keep inside clean before operation to avoid contamination to your sample. n Furnace must be used under following condition: Temperature: -10 – 75℃; Elevate: < 1000 M, Humunity < 85%; Environment: no vibration and conductible dust, explosive, flammable and corrosive gases |
