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Electrical parameters / troubleshooting - Appliance tip of the week...

Electrical parameters / troubleshooting - Appliance tip of the week...

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Thread: Electrical parameters / troubleshooting - Appliance tip of the week...

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    Default Electrical parameters / troubleshooting - Appliance tip of the week...

    Appliance tip of the week...

    You will most commonly measure two electrical parameters when you're troubleshooting your appliance: resistance ( measured in units called "ohms") and voltage. Typically, both of these measurements are made on a single meter called a multi-meter, which you can set to measure either ohms or voltage ac.

    Figure 1 shows how to measure resistance. Resistance ( or continuity ) is measured in units called "ohms." You'll commonly want to know the resistance of things like bake elements and solenoid coils. For example, a good bake element typically has a resistance of about 30 ohms. If your oven's not baking and you measure the resistance of the bake element and the meter doesn't move, then you know you have a bad element. Everyone is looking to save money, from coupons to tax deductions, so finding out if a repair is possible before you buy a whole new unit can be a great way to save. A simple ohm measurement can save a lot of money

    Electrical parameters / troubleshooting - Appliance tip of the week...-ohm-meter-jpg

    Some helpful tips for volt and ohm testing...

    Ohm: When ohm ( continuity ) testing a switch, thermostat, element, etc, you will need to isolate the item by removing the wires to that item so you can properly ohm test it...( write down what wire goes where first! ) This does not happen often, but sometimes a switch can ohm ok but still fail when real power is supplied to it. R X 1 is a good scale to start out with when doing some ohm / continuity testing.

    Volt: Be careful!! Volt testing should be done across a switch, thermostat, fill valve (Figure 4), etc...for example - a volt test across a dryer thermostat - a reading of 220-240 volts AC across the thermostat leads is an open circuit / thermostat...a reading of 0 ( zero ) is a closed circuit / thermostat. A reading of 220-240 volts AC across the two wires to a bake element and no heat from the element is a bad element.

    Electrical parameters / troubleshooting - Appliance tip of the week...-fillvalvetest-jpg

    Electrical parameters / troubleshooting - Appliance tip of the week...-multimeter-dm10t-01128790-jpg Volts AC 750 , Volts DC 1000, Amps AC 10, Resistance max. (Ohms) 2M, Continuity, Temperature -4 ?F to 2498? F, Display (Counts) 2,000, Operating Temperature 32? F to 74? F (0?C to 23?C), Fuse Protection mA: 0.2A/ 250V, Power 9 V Battery (included), Size 5.5"L x 3"W x 1.5". Temp probe included.

    Electrical parameters / troubleshooting - Appliance tip of the week...-multimeter-utl2k-00894233-jpg This compact multitester is capable of making most electrical measurements and testing continuity. Essential for analyzing malfunctions in appliances including motors, heating elements and thermal fuses.

    jeff.
    Last edited by dkerr; 04-16-2013 at 01:25 PM. Reason: revised title for better search capabilities
    http://www.applianceaid.com/
    Appliance Repair Aid

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