![]() ![]() With masking tape, mark the location of all wires and components you loosen so you will be able to reconnect them with ease. Step 3: If no electricity is being conducted, replace the Disconnect the unit from the circuit, then place a probe at each terminal and verify that the element can Step 2: Once accessed, the heating element can be tested using a continuity tester or a multitester as you would any conductor. Step 1: Make sure all liquids and grounds are emptied from the appliance before turning it over to remove the base. The heating element in either a drip or percolator coffee maker is accessed through the base of the appliance. Servicing Heating Elements: A coffee maker's heating element is a critical component. If replacing the thermostat requires unriveting or desoldering it, consider taking it to an appliance-repair shop or replacing the entire coffee maker. Step 3: If the thermostat is an open circuit, replace it. Step 2: Test the thermostat's continuity. ![]() Step 1: Unplug the coffee maker, make sure the coffee and filter are removed before turning it over, then remove the base to expose the heating element and thermostat. To test a percolator coffee maker's thermostat: Servicing a Percolator Coffee Maker's Thermostat: The thermostat in a percolator coffee maker serves the same function, but looks different from one in a drip system. Step 4: Also check the continuity of the fuse and replace it if the circuit is open. Step 3: If defective, remove and replace the thermostat with one of the same rating. Step 2: Use a continuity tester or multitester to check the thermostat, placing a probe at each end. (Special head screwdrivers - available at larger hardware stores - may be required.) Step 1: Unplug the unit, empty excess water from the reservoir, turn the unit over, and remove the base. To test the thermostat in a drip coffee maker: It can cause problems if it doesn't work correctly. Servicing a Drip Coffee Maker's Thermostat: A thermostat in a drip coffee maker controls electricity to operate the heating element. All operate as switches, conducting electricity in some settings and not in others. The same test of continuity can be used to test other controllers, such as timers. The circuit should be closed and show continuity as indicated by the switch positions. Step 3: Place test probes across the terminals and activate the switch. Step 2: Remove the base or shell to access the back of the switch. Step 1: Make sure the coffee maker is unplugged. ![]() Fortunately, this key controller is easy to test and to replace. Servicing an On/Off Switch: A coffee maker's switch is a simple device that controls current to the heating unit and pump. How to Repair a Coffee MakerĬommon repairs to coffee makers include servicing the on/off switch, thermostat, heating element, and warming element. A heating element continues to maintain the coffee at the selected temperature. ![]() A thermostat determines when the coffee has brewed sufficiently, then turns the percolating system off. The resulting hot coffee then drips through holes in the basket base and into the main compartment to be recycled. At the top, water falls into the coffee basket and soaks up all that great coffee flavor from the grounds. Percolator coffee makers heat a small amount of water in the base of the unit, forming steam that pushes the hot water up a tube in the center of the percolator. An element under the carafe keeps the coffee warm. The resulting hot coffee falls into a carafe. Most drip coffee makers are activated by switches and timers in the control panel, heating water and pumping it up to drop through the coffee basket. There are two types of coffee makers in common use: those that drip hot water once through the coffee grounds, and those that percolate, or recycle, the water through the grounds many times. ![]()
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