Lincoln 3240-2, 3270-2, 3262 service manual With Power on and Thermocouple Leads

Page 14

 

On at this time

control at terminals #13 and #12. Of there is no voltage,

 

Electronic temperature

trace wiring back to the burner switch. Also check for

 

control

supply voltage to terminal #20 on the electronic

 

 

temperature control. If there is no voltage at terminal

 

 

#20, trace wiring back to terminal #13. Set temperature

 

 

control to maximum temperature and check for output

 

 

voltage at terminal #21 and neutral. If voltage is present

 

 

at terminal #20 and neutral, and the unit is not heating,

 

 

refer to “Temperature regulation valve” for next check.

 

 

If voltage is not present, proceed.

 

Thermocouple probe

WITH POWER ON AND THERMOCOUPLE LEADS

 

 

ATTACHED TO THE ELECTRONIC TEMPERATURE

 

 

CONTROL: Measure the D.C. millivolt output of these

 

 

leads. Refer to chart in the “Removal, Installation and

 

 

Adjustment” section for proper readings. If these

 

 

readings are not achieved, replace thermocouple.

 

Burner control.

Check for supply voltage to main valve. If no voltage is

 

 

present, trace wiring back to burner control. If there is

 

 

no voltage output, replace burner control.

 

Main gas valve

Check for supply voltage to main valve. If there is

 

 

voltage present, check to see that valve is opening.

 

 

Connect manometer to pressure tap on outlet side of

 

 

valve. If there is voltage to the valve, but no output gas

 

 

pressure, replace the valve.

 

Temperature regulation valve

If supply voltage is present on the electronic

 

 

temperature control, terminal #13 to neutral, check for

 

 

voltage at temperature regulation valve. If no voltage is

 

 

present, trace wiring back to electronic temperature

 

 

control, terminal #20. If voltage is present, listen for

 

 

valve to open and close. Also check for opens or shorts

 

 

in the operating coil. Replace temperature regulation

 

 

valve as needed.

Intermittent heating

Thermal/Overload of main fan

The main fan motor and burner blower motor are

 

and burner blower motors

equipped with internal thermal protection and will cease

 

 

to operate if overheating occurs. As the motors over-

 

 

heat and then cool, this will cause the units to cycle on

 

 

and off intermittently. Improper ventilation or lack of

 

 

preventive maintenance may cause this. Also, most of

 

 

the problems listed under “Oven will not heat” can

 

 

cause intermittent failure.

Conveyor will not run

NOTE: The ovens may contain

two, three or four conveyor drive systems using like

 

components. The trouble shooting sequence will be the same for each of the conveyor

 

drive systems

 

 

 

 

 

Power supply

Check circuit breakers, reset if required. Check power

 

 

plug to be sure it is firmly in receptacle. Measure

 

 

incoming power, call power co. if needed.

 

Switch, oven fan

Check continuity between switch terminals. Replace

 

 

switch as needed.

 

Relay, main fan

Check for supply voltage to relay terminal #13. If

 

 

voltage is not present, trace wiring back to power

 

 

supply. If voltage is present, check for supply voltage at

 

 

terminal #14. If there is no voltage at terminal #14, and

 

 

the relay is energized, replace the main fan relay.

 

Fuse, 2 Amp

Check, replace if necessary.

 

Fuse holder

Check for supply voltage to fuse holder. If no voltage is

 

 

present, trace wiring back to main fan relay. Check fuse

 

 

holder, replace if necessary.

 

Switch, conveyor

Check for supply voltage to conveyor switch. If no

 

 

voltage is present, trace wiring back to fuse holder.

 

 

Check continuity between switch terminals. Replace

14

 

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

Page 13 Page 15
Image 14
Page 13 Page 15
Contents Impinger X2 Ovens With Analog Controls Temperature Control PhasePower Supply Main FAN Circuit3240-2 230VAC 50 HZ Schematic Diagram Model 3240-2, 3262-2, 3270-2 50 HZ Troubleshooting Guide Symptom Possible Cause EvaluationBearings. Replace bearings as needed With Power on and Thermocouple Leads Attached to the Electronic TemperaturePage Assembly. Check for damaged or torn belting. Check Troubleshooting Guide Page Page With Power on and Thermocouple Leads Page Shaft and Blower Wheel Replacement Impinger X2 Series OvensPage Fuse Holder Replacement RELAY, Main FAN, ReplacementTIMER, 30 Minute Cool Down Replacement SWITCH, ON/OFF ReplacementAIR Pressure Switch Adjustment Burner Control ReplacementAIR Pressure Switch Replacement Electronic Temperature Control ReplacementTemperature Regulation Valve Replacement Hairpin Switch Thermocouple ReplacementTHERMOSTAT, HI-LIMIT Replacement GAS Valve ReplacementSpark Igniter Replacement Main Burner Orifice ReplacementPilot Orifice Replacement Conveyor Motor ReplacementHall Effect Sensor Replacement Conveyor Control ReplacementConveyor Control Programming Chamber Drive Constant Length Type Dayton GleasonConveyor Control Programming Dayton MOTOR, Direct Drive Conveyor Control Programming Dayton MOTOR, Right Angle Drive Page This page intentionally left blank General View Letter Part Number DescriptionPage Oven Cavity Page Control BOX Page BURNER/DRIVE END Page CONVEYOR, Single Page CONVEYOR, Dual Belt
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3240-2, 3262, 3270-2 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.

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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.
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