GE MV1526W, MV1526B service manual Microwave Leakage Test, Equipment

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MICROWAVE LEAKAGE TEST

CAUTIONS

•Be sure to check microwave leakage prior to servicing the oven if the oven is operative prior to servicing.

•The service personnel should inform the manufacture importer, or assembler of any certified oven unit found to have a microwave emission level in excess of 5 mW/cm2 and should repair any unit found to have excessive emission levels, at no cost to the owner, and should ascertain the cause of the excessive leakage. The service personnel should instruct the owner not to use the unit until the oven has been brought into compliance.

•If the oven operates with the door open, the service personnel should:

-Tell the user not to operate the oven.

•The service personnel should check all surface and vent openings for microwave leakage.

•Check for microwave leakage after every servicing. The power density of the microwave radiation leakage emitted by the microwave oven should not exceed

4 mW/cm2. Always start measuring of an unknown field to assure safety for operating personnel from radiation leakage.

EQUIPMENT

•TESTER (VOLTS-DC, AC, Ohmmeter)

•Microwave survey meter - Holaday HI-1500

HI-1501

-Narda 8100 8200

•600 cc non conductive material beaker (glass or plastic), inside diameter: approx. 8.5 cm (31/2 in.)

•Glass thermometer: 100°C or 212°F (1 deg scale)

MEASURING MICROWAVE ENERGY LEAKAGE

•Pour 275±15cc of 20±5°C(68±9°F) water in a beaker which is graduated to 600 cc, and place the beaker on the center of the turntable.

•Set the energy leakage monitor to 2,450 MHz and use it following the manufacturer's recommended test procedure to assure correct result.

•When measuring the leakage, always use the 2-inch (5cm) spacer supplied with the probe.

•Operate the oven at its maximum output.

•Measure the microwave radiation using an electromagnetic radiation monitor by holding the probe perpendicular to the surface being measured.

Move probe along shaded area.

Probe scanning speed

Less than 2.5 cm/sec. ( 1 in/sec)

7-2

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Contents Microwave Oven Safety Precautions in this ManualPage Table of Contents Specifications Antenna Microwave RadiationGrounding Instructions InstallationControl Panel Operating InstructionsControl Panel Instructions Schematic Diagram Overall Circuit DiagramMatrix Circuit for Touch KEY Board General Precautions in USE General Information for ServiceFeatures and Specifications Features Trial OperationPrecautions and Repair Service Tips Service InformationPreliminary Equipment Microwave Leakage TestMeasurement with the Outer Case Removed Power Output MeasurementImportant Notes Disassembly InstructionsHOW to Insert the F.P.C. Connector HOW to Remove the F.P.C. ConnectorRemoving the OUT CASEFigure Wire Color Removing the Door Interlock Switches Figures 9,10Removing Magnetron Removing Door Figure Removing the Ventilation FAN ASS’Y Assembling DoorRemoving the Turntable Motor Interlock Mechanism Interlock SystemTest the Latch and Switch Sequence Switches Components Test Procedure ResultsInterlock Continuity Test Test Procedures Test and Checkout PROCEDURES, and Trouble ShootingMagnetron HIGH-VOLTAGEHIGH-VOLTAGE Diode HIGH-VOLTAGE CapacitorTouch KEY Board Connectorkey CON FPC ConnectorMatrix Circuit for Power Level Checkout ProceduresCheckout Procedures for Fuse Blowing RELAY2RELAY3 Problem B Checkout Procedures for Relay Problem aYES Good YESCheckout Procedures for Circuit Board Trouble Shooting Thermostat Page Fuse Exploded View Control Panel Oven Cavity Latch Board Interior 50FZZA Installation Schematic Diagram of P.C.B Printed Circuit Board July

MV1526W, MV1526B specifications

The GE MV1526B and MV1526W are advanced medium-voltage switchgear solutions designed for reliability, efficiency, and safety in various industrial and utility applications. These models from General Electric (GE) represent a significant leap forward in switchgear technology, incorporating state-of-the-art features and benefits for modern electrical systems.

One of the primary features of the MV1526B and MV1526W is their robust construction, designed to withstand the harshest environmental conditions. Built with high-quality materials, these models ensure long-lasting performance while providing superior protection against external elements such as moisture, dust, and extreme temperatures. This durability ensures low maintenance costs and extended service life, making them an excellent choice for long-term investments.

Both models utilize vacuum circuit breaker technology, which is critically important for medium-voltage applications. This technology minimizes arcing during operations, significantly enhancing safety and reducing maintenance periods. The vacuum interrupters are designed to provide superior fault interruption capabilities, ensuring that the electrical systems are safeguarded against overloads and short circuits.

The MV1526B and MV1526W also showcase GE's advanced digital controls and monitoring capabilities. Features such as real-time diagnostics and remote monitoring allow for proactive maintenance, enabling operators to identify potential issues before they escalate. This not only enhances system reliability, it also minimizes downtimes, ultimately resulting in greater operational efficiency.

Another significant characteristic of these models is their compact design. The MV1526B and MV1526W applications are engineered to maximize space while maintaining operational functionality. This compact footprint is particularly advantageous in environments where space is a premium, allowing for easier installations and future expansions.

Moreover, the flexibility of configuration is a standout feature of the MV1526 series. Users can customize their switchgear layout based on specific operational needs, accommodating various configurations for different applications. This adaptability makes the MV1526B and MV1526W suitable for a range of sectors, including energy, manufacturing, and commercial facilities.

In conclusion, the GE MV1526B and MV1526W models exemplify cutting-edge technology and engineering excellence, providing industrial and utility applications with versatile, reliable, and safe medium-voltage solutions. Their advanced features, including vacuum circuit breaker technology, digital monitoring capabilities, robust construction, and compact design, make them ideal choices for modern electrical infrastructure.
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