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GF SERIES2800°F Silicon Carbide Element Box FurnacesAPPLICATIONSThe GF Series Electric Silicon CarbideElement Floor Standing Box Furnaces feature2800°F (1535°C) operation. Silicon carbideelements are controlled with a phase anglefired SCR and tap transformer. The doorfeatures a deep plug for minimal heat lossaround the door. Because this door must beopened horizontally the furnace can not beloaded and unloaded easily at high temperatures.These furnaces are excellent for longhigh temperature cycles.They are used mostlyin ceramics but find application in chemicalprocessing and other fields.FEATURESMOST FEATURES ARE THE SAME AS GLFInsulation is a higher grade. Power supply ismore robust but is a similar 6 position taptransformer and phase angle fired SCR. TheGF Series furnaces have higher KW ratingsthan the GLF Series. Most GLF Series options,except for vertical doors, are available on theGF Series.MULTILAYERED INSULATION; CERAMICFIBER ROOF AND DOOR PLUGThere is 4-1/2” of 3000°F (1650°C) insulatingfirebrick backed up with 4” of 2300°F(1260°C) ceramic fiber. The roof and doorare made from 2850°F (1565°C) ceramicfiber modules. The door plug is 2” deep.Model GF 3648 withatmosphere sealed case.SILICON CARBIDEHEATING ELEMENTSSilicon carbide heatingelements are mountedover and under the hearthfor even heating. All elementconnections are onthe sides. Watt density isbetween 30 and 39. Elementsare rated for3000°F (1650°C).The GL9, GL29, GL39 are all bench mountedversions of the GLF Series. Elements run on linevoltage (without a tap transformer) and use spiral typesilicon carbide elements. The popular GL29 is shownbelow.GL, GLF & GF SPECIFICATIONSMODEL WORK DIMENSIONS INSIDE DIMENSIONS OUTSIDE DIMENSIONS GL/GLF GF GLF MAX GF MAX SHIPNUMBER W H D IW IH ID OW OH OD KW KW LOAD LBS LOAD LBS WEIGHTGL 9 11 8 10 13 16 13 42 42 30 10 - 75 - 900GL 29 11 8 20 13 16 23 42 42 40 20 - 150 - 1400GL 39 11 8 30 13 16 33 42 42 50 30 - 225 - 1900GF 9 12 8 10 14 15-1/2 11-1/2 36 62 28 - 10 - 50 1400GF 29 12 8 20 14 15-1/2 21-1/2 36 62 38 - 20 - 100 1800GF 39 12 8 30 14 15-1/2 31-1/2 36 62 48 - 30 - 150 2200GLF 524 GF 524 15 15 24 17 26-1/2 26 70 61 50 30 33 175 125 2000GLF 814 GF 814 18 12 24 21 23-1/2 26 73 58 50 30 34 225 150 2200GLF 824 GF 824 18 18 24 21 29-1/2 26 73 64 50 37 41 225 150 2700GLF 836 GF 836 18 18 36 21 29-1/2 38 73 64 62 47 52 325 225 3400GLF 236 GF 236 24 18 36 27 29-1/2 38 79 64 62 54 60 450 300 4100GLF 244 GF 244 24 24 24 27 35-1/2 26 79 70 50 50 54 300 200 3900GLF 246 GF 246 24 24 36 27 35-1/2 38 79 70 62 65 66 450 300 4900GLF 248 GF 248 24 24 48 27 35-1/2 26 79 70 74 80 86 600 400 5900GLF 3636 GF3636 36 36 36 39 47-1/2 38 91 82 62 95 106 675 450 7400GLF 3648 GF 3648 36 36 48 39 47-1/2 50 91 82 74 114 127 900 600 8600GLF 3672 GF 3672 36 36 72 39 47-1/2 74 91 82 98 150 164 1350 900 10,000All dimensions are in inches. Weight is in pounds. Hearth height is 30” on floor mounted units (all but GL9, GL29, GL39 which are bench mounted furnaces). Hearthdimensions are the same as working width and depth. Typical floor standing control panel is 24” wide by 66” high by 36” deep. Standard voltages supplied are 480, 240,208, 380 and 575. Three phase or single phase is available. Larger sizes are available by special quote. The same KW rating used on the GF furnaces can be obtained inthe GLF line as an option.800.459.0750Page 23