Barnstead 47900 Operation Manual
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Contents
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Intended UseThe Type F47900 and F48000 furnaces aregeneral purpose laboratory and heat treatingfurnaces. For optimum element life,Barnstead International recommends observ-ing these temperature ranges: from 100°C(212°F) to 1093°C (2000°F) continuous useor from 1093°C (2000°F) to 1200C (2192°F)for intermittent use. Continuous use is operat-ing the furnace for more than 3 hours andintermittent use is operating the furnace forless than 3 hours.All furnaces consist of: 1) a vented heatingchamber; 2) a temperature controller; and 3)a door safety switch for operator safety.General UsageDo not use this product for anything otherthan its intended usage.Principles of OperationThe furnace chamber is heated by open coilelectric resistance elements and is insulatedwith ceramic fiber insulation. The controller islocated under the furnace chamber and iswell insulated from the heat generated in thefurnace chamber. A door safety switchremoves power to the heating elementswhenever the furnace door is opened. Thetemperature is controlled by one of threetypes of controllers.5IntroductionCautionDo not exceed operating temperaturesshown in “General Specifications.”Exceeding these limits will result inseverely reduced element life. |
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