Manuals / Viking / Kitchen Appliance / Microwave Oven

Viking VMOC205SS Power Transformer Test, High Voltage Rectifier Test, High Voltage Capacitor Test

Models: VMOC205SS DMOC205SS

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DMOC205SS

VMOC205SS

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

AMAGNETRON ASSEMBLY TEST

HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD BE OBSERVED.

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm.

To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance the magnetron is grounded and must be replaced.

Power output of the magnetron can be measured by performing a water temperature rise test. This test should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following components or wiring: silicon rectifier, high voltage capacitor and power transformer. This test will require a 16 ounce (453cc) measuring cup and an accurate mercury thermometer or thermocouple type temperature tester. For accurate results, the following procedure must be followed carefully:

1.Fill the measuring cup with 16 oz. (453cc) of tap water and measure the temperature of the water with a thermometer or thermocouple temperature tester. Stir the thermometer or thermocouple through the water until the temperature stabilizes. Record the temperature of the water.

2.Place the cup of water in the oven. Operate oven at POWER HI(HIGH) selecting more than 60 seconds cook time. Allow the water to heat for 60 seconds, measuring with a stop watch, second hand of a watch or the digital read-out countdown.

3.Remove the cup from the oven and again measure the temperature, making sure to stir the thermometer or thermocouple through the water until the maximum temperature is recorded.

4.Subtract the cold water temperature from the hot water temperature. The normal result should be 22 to 43οF(12.2 to 23.8οC) rise in temperature. If the water temperatures are accurately measured and tested for the required time period the test results will indicate if the magnetron tube has low power output (low rise in water temperature) which would extend cooking time or high power output (high rise in water temperature) which would reduce cooking time. Because cooking time can be adjusted to compensate for power output, the magnetron tube assembly should be replaced only if the water temperature rise test indicates a power output well beyond the normal limits. The test is only accurate if the power supply line voltage is 117 volts and the oven cavity is clean.

BPOWER TRANSFORMER TEST

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

Disconnect the primary input terminals and measure the resistance of the transformer with an ohmmeter. Check for continuity of the coils with an ohmmeter. On the R x 1 scale, the resistance of the primary coil should be less than 1 ohm and the resistance of the high voltage coil should be approximately 84.4 ohms; the resistance of the filament coil should be less than 1 ohm.

(HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.)

CHIGH VOLTAGE RECTIFIER TEST

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, reverse the leads to the rectifier terminals and observe meter reading. If a short is indicated in both directions, or if an infinite resistance is read in both directions, the rectifier is probably defective and should be replaced.

DHIGH VOLTAGE CAPACITOR TEST

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

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Viking VMOC205SS, DMOC205SS service manual Power Transformer Test, High Voltage Rectifier Test, High Voltage Capacitor Test
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VMOC205SS, DMOC205SS specifications

The Viking DMOC205SS and VMOC205SS are two state-of-the-art microwave ovens that redefine cooking convenience and efficiency. Designed for modern kitchens, these appliances come equipped with a range of features and technologies that enhance their usability and performance.

One of the most notable aspects of the Viking DMOC205SS and VMOC205SS is their powerful cooking capabilities. Both models utilize an advanced cooking system that ensures even heat distribution, resulting in perfectly cooked meals every time. With a robust wattage of up to 1,200 watts, these microwaves can quickly and efficiently prepare a wide variety of dishes.

The DMOC205SS features a spacious interior, offering 2.1 cubic feet of cooking space, making it ideal for larger families or those who frequently entertain guests. The VMOC205SS variant also shares a similar capacity but comes with additional features tailored for versatility. The interior design of both models includes a stainless steel finish that not only enhances durability but also adds a touch of elegance to any kitchen.

Functionality is at the forefront of the Viking DMOC205SS and VMOC205SS. Both models are equipped with multiple cooking modes, including microwave, convection, and grilling options. This multi-functional capability allows users to seamlessly switch between cooking methods, ensuring optimal results for various recipes. The intuitive control panel features easy-to-read buttons and a digital display, making it user-friendly for all cooking levels.

In terms of technology, these Viking microwaves incorporate sensor cooking, which automatically detects the moisture and temperature of food, adjusting cooking times accordingly. This feature not only prevents overcooking but also ensures consistently delicious results. The models also come with pre-programmed cooking settings for popular dishes, making meal preparation simpler and quicker.

Energy efficiency is another critical aspect of the Viking DMOC205SS and VMOC205SS. Both models are designed to minimize energy consumption while maximizing performance, which is beneficial for both the environment and the homeowner’s energy bills.

Safety features are embedded within the design of these microwaves. They include a child lock function to prevent accidental use, as well as a timer that ensures food is cooked for the precise amount of time needed.

In summary, the Viking DMOC205SS and VMOC205SS are exceptional microwave ovens that combine advanced technology, practical features, and stylish design. Their powerful cooking capabilities, user-friendly controls, and energy-efficient operation make them a perfect addition to any modern kitchen. These appliances empower users to explore a wide range of cooking possibilities, bringing convenience and quality to meal preparation.