Hairpin Switch Thermocouple Replacement

7.Press the “FUNC” key until the display reads “Cnf”. Shut off burner, remove control from the mounting base. Close the Hairpin switch on the control and replace the control in the mounting base.

8.Turn the burner on. Set oven temperature to 500°F and verify calibration. Allow oven to preheat for at least 30 minutes. Place temperature probe in the center of the oven, on the top conveyor. If the actual temperature differs from the displayed temperature more than 5°, the “offset value” must be adjusted (steps 2 through 7), until the proper temperature is indicated on the display.

9.Reassemble in reverse order and check system operation.

HAIRPIN SWITCH

THERMOCOUPLE – REPLACEMENT

1.Shut off power at main breaker.

2.Remove control box cover.

3.Disconnect thermocouple from electronic temperature control. Note wire colors for reassembly.

4.Remove oven back assy. Remove thermocouple from mounting flange in blower housing. Remove thermocouple from oven.

5.Reassemble in reverse order and check system operation.

THERMOSTAT, HI-LIMIT – REPLACEMENT

1.Shut off power at main breaker.

2.Remove control box cover.

3.Disconnect all wiring from hi-limit thermostat and mark all wiring for reassembly.

4.Remove oven back assy. Remove capillary tube from mounting bracket.

5.Remove mounting nut and remove hi-limit thermostat from oven.

6.Reassemble in reverse order and check system operation.

7.NOTE: Depress reset button to insure thermostat is set for operation.

TEMPERATURE REGULATION VALVE – REPLACEMENT

1.Shut off power at main breaker.

2.Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven.

3.Remove control box cover.

4.Disconnect all wiring from the temperature regulation valve and the main gas valve. Mark all wiring for reassembly.

5.Remove pilot tube from gas valve. Disconnect pipe union at the burner and at the inlet side of the main gas valve. Loosen pipe clamp and remove valves and piping assembly.

6.Remove piping from old valve and reassemble in reverse order.

7.Check all gas line fittings for leaks and check system operation.

GAS VALVE – REPLACEMENT

1.Shut off power at main breaker.

2.Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven.

3.Remove control box cover.

20	Impinger X2 – Analog Service Manual – Dom & Int’l

3240-2, 3270-2, 3262-2 specifications

The Lincoln 3270-2 is a state-of-the-art welding machine designed for professional welders who require precision, efficiency, and reliability in their welding tasks. This versatile unit is particularly well-suited for MIG and TIG welding, making it an essential tool for both industrial applications and hobbyist projects.

One of the standout features of the Lincoln 3270-2 is its advanced inverter technology. Inverter technology allows for a more compact design while delivering high power output. This results in a machine that is lightweight and portable, yet capable of handling demanding welding jobs with ease. The inverter system also enhances efficiency, reducing overall energy consumption while maintaining excellent welding performance.

The 3270-2 is equipped with a user-friendly interface, providing welders with intuitive controls to easily adjust settings such as voltage, wire feed speed, and gas flow. Its digital display allows for quick monitoring of parameters, enabling users to make precise adjustments on the fly. This feature is especially beneficial for novices who may need a bit of guidance while getting accustomed to the different welding processes.

Another notable characteristic of the Lincoln 3270-2 is its compatibility with a wide range of materials and thicknesses. It effectively welds various metals, including mild steel, stainless steel, and aluminum, making it suitable for numerous applications. The machine can effortlessly adapt to a variety of welding tasks, from thin sheet metal work to thicker structural components.

Safety is a top priority in the design of the 3270-2. It comes equipped with several integrated safety features, including thermal overload protection, which prevents the machine from overheating during extended use. This attention to safety helps to protect both the welder and the equipment, ensuring a reliable and long-lasting machine.

In addition to its impressive technical specifications, the Lincoln 3270-2 boasts exceptional build quality. The robust construction of the unit ensures it can withstand the rigors of a busy workshop or job site. Its durable outer casing provides protection against dust and debris, enhancing its longevity.

With its combination of portability, advanced technology, user-friendly interface, and robust performance, the Lincoln 3270-2 stands out as an ideal choice for professional welders. Whether for fabricating, repairs, or maintenance, this welding machine is designed to meet the high demands of modern welding practices, delivering both efficiency and superior weld quality.