Introduction
Removing the heating element may be necessary if the coffee maker is not keeping the coffee warm. Always unplug your device before beginning any repair.
Tools
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            Remove the carafe (coffee pot) from the coffee maker. 
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            Turn the Braun Aromaster KF 440 upside down so the base is exposed. 
 
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            Using the larger plastic opening tool, gently push the tubing off of the one-way valve. (If the tubing is being stubborn and won't come off, run the metal spudger around the inside of the tubing to free it up.) 
 
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            Using the larger plastic opening tool, gently push the tubing off of the second one-way valve. (If the tubing is being stubborn and won't come off, run the metal spudger around the inside of the tubing to free it up.) 
 
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            Looking at bottom of the coffee maker, locate the two gray wires attached to the circuit board. 
 
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            Notice that there are 4 wires to remove. 
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            Remove each wire by gently gripping with pliers and then pulling straight back. 
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            Again, if your having a hard time removing the wires, revert back to the tip given in step 4. 
 
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            Remove the bolt by simply screwing it off by hand, or by using the pliers again if you need to. 
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            Remove the metal spacer. ( Note: Make sure you are aware which way it came off because it does matter when you go to reassemble) 
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            Remove the wing nut. 
 
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To reassemble your device, follow these instructions in reverse order.