NE-3280 / NE-2180 / NE-2180C

12.6. Diode

1.Isolate the diode from the circuit by disconnecting the leads.

2.With the ohmmeter set on the highest resistance scale, measure the resistance across the diode terminals. Reverse the meter leads and again observe the resistance reading. Meter with 6V, 9V or higher voltage batteries should be used to check the front-to-back resistance of the diode, otherwise an infinite resistance may be read in both directions. A normal diode’s resistance will be infinite in one direction and several hundred kΩ in the other direction.

12.7.Membrane key board (Membrane switch assembly)

Check continuity between switch terminals, by tapping an appropriate pad on the key board. The contacts assignment of the respective pads on the key board is as shown in digital programmer circuit.

12.8. Protector diode

1.Isolate the protector diode assembly from the circuit by disconnecting its leads.

2.With the ohmmeter set on the highest resistance scale, measure the resistance across the protector diode terminals. Reverse the meter leads and again observe the resistance reading. A normal protector diode’s resistance will be infinite in both directions. It is faulty if it shows continuity in one or both directions.

12.9.Temp sensor (Thermal protector)

A temp sensor is mounted on exhaust guide. Its purpose is to automatically shut off the oven in case the cavity overheats for any reason.

The thermal protector will operate at 257°F (125°C).

The device is connected to the DPC on touch control models. When the thermal protector exceeds its temperature it will turn off the power to oven cavity and display will go to reset mode. The cooking program can be reset after cool-down.

THERMISTOR RESISTANCE VALUE

30K — 120K at 10°C — 30°C (50°F — 86°F)

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Panasonic NE-3280, NE-2180C manual Diode, Protector diode, Temp sensor Thermal protector

NE-2180C, NE-2180, NE-3280 specifications

Panasonic's commercial microwaves, including the NE-3280, NE-2180, and NE-2180C, are designed to meet the demanding needs of the foodservice industry. Each model is engineered to ensure optimal performance, efficiency, and durability, making them ideal for restaurants, cafes, and catering services.

Starting with the Panasonic NE-3280, it features a powerful 1800 watts of cooking power. This industrial-grade microwave offers a spacious 0.9 cubic feet interior, allowing for larger dishes and more significant quantities of food to be heated at once. The NE-3280 is equipped with a user-friendly touch control panel that provides easy access to multiple power levels and cooking times, which can be stored in memory for quick recalls. A key feature is its inverter technology, which delivers a steady stream of power for even cooking and defrosting, ensuring food retains its texture and flavor without overcooking.

Next, the NE-2180 model also showcases cutting-edge inverter technology but with a slightly lower wattage of 1,200 watts. This model maintains a compact design while providing a substantial 0.8 cubic feet of cooking capacity. It's tailored for smaller kitchens or operations looking for efficiency without compromising quality. The NE-2180 comes with programmable menus enabling quick selection of common cooking tasks, improving speed during busy service periods. Furthermore, the stainless-steel exterior makes the unit easy to clean and resistant to wear over time.

The NE-2180C variant is similar to the NE-2180 but is designed with specific features for enhanced versatility in food preparation. It includes a reliable cooking timer and a convenient one-touch control for reheating items quickly. The NE-2180C also sports a robust construction tailored for high-volume use. All three models boast a design that enhances safety with features like a cooling fan to prevent overheating and a child safety lock.

In summary, Panasonic's NE-3280, NE-2180, and NE-2180C microwaves represent a blend of innovation, reliability, and versatility. Each model is geared toward improving efficiency in commercial kitchens while ensuring the quality of heated food. With their durable design, user-friendly controls, and advanced technologies, these microwaves are essential tools for any foodservice operation looking to enhance its meal preparation process.