Lincoln 3262, 3270-2, 3240-2 service manual

Page 13

 

Burner control

Check for supply voltage at terminal #7 on burner

 

 

control. If no voltage is present, trace wiring back to air

 

 

pressure switch. If voltage is present, check for output

 

 

voltage (after the 30 second delay) from terminal #8 on

 

 

the burner control. If there is no output voltage from

 

 

terminal #8, (after the 30 second delay) replace the

 

 

burner control. If there is output voltage, proceed.

 

Pilot valve

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

 

 

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

 

 

present, check for gas pressure at the pilot line

 

 

connection. If no gas pressure is present during

 

 

ignition, check for any blockage in the assembly. If

 

 

there are no obstructions, and there is gas supplied to

 

 

the oven, replace the gas valve.

 

Burner control

Check to see that the high voltage igniter circuit on the

 

 

burner control is energized. To check, turn power off,

 

 

disconnect the igniter lead from the burner control. Turn

 

 

power on. If no spark is visible, replace burner control.

 

 

If a spark is visible at burner control, proceed.

 

Burner igniter

Check the burner igniter head for any damage or

 

 

obstructions also check for frayed or broken wire.

 

 

Check spark gap, gap should be 3/32” If there is visible

 

 

damage, replace burner igniter.

 

No pilot flame

If there is supply voltage to the burner control, and the

 

 

pilot valve and igniter circuits are energized, visually

 

 

check for a pilot flame. This may be done by looking

 

 

through the inspection view port on the end of the

 

 

burner. If no pilot flame is visible, check the pilot tube.

 

Pilot tube

Check for gas pressure at the pilot tube. Disconnect

 

 

pilot tube at the burner and connect manometer to pilot

 

 

tube. If no gas pressure is present during ignition,

 

 

check for blockage of the pilot tube. If the pilot tube is

 

 

clear, proceed.

 

Pilot orifice

If there is gas pressure at the pilot tube, check the pilot

 

 

orifice for blockage or obstructions. Replace pilot orifice

 

 

as needed.

 

Burner igniter

Check the burner igniter head for any damage or

 

 

obstructions also check for frayed or broken wire.

 

 

Check spark gap, gap should be 3/32” If there is visible

 

 

damage, replace burner igniter.

 

Flame sensor

(There should be a visible pilot flame at this time.)

 

 

To check for proper flame sensor operation, connect a

 

 

digital multimeter (capable of measuring D.C. micro

 

 

amps) in series between the flame sensor wire

 

 

(normally connected to terminal #13 on the burner

 

 

control) and terminal #13 on the burner control. With a

 

 

visible pilot flame, the current reading should be 0.7

 

 

micro amp minimum. NOTE: The D.C. micro amp test

 

 

must be conducted with the oven in low flame operation

 

 

only. If these values are not achieved, replace flame

 

 

sensor. Also check for any type of damage to flame

 

 

sensor wire and connections.

 

Power supply

If there is a pilot flame, and there is sufficient micro

 

 

amp. current, but the flame will not stay on, check for

 

 

proper polarity of the power supply.

 

Burner control

If there is sufficient micro amp current, and there is

 

 

proper polarity of the power supply, but the burner will

 

 

not stay on, check the reset button for the burner

 

 

control. If the reset switch checks okay, replace the

 

 

burner control.

Pilot flame, but no main flame

NOTE: Flame should be

Check for supply voltage to electronic temperature

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

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Page 12 Page 14
Contents Impinger X2 Ovens With Analog Controls Power Supply PhaseTemperature Control Main FAN Circuit3240-2 230VAC 50 HZ Schematic Diagram Model 3240-2, 3262-2, 3270-2 50 HZ Symptom Possible Cause Evaluation Troubleshooting GuideBearings. Replace bearings as needed Attached to the Electronic Temperature With Power on and Thermocouple LeadsPage Assembly. Check for damaged or torn belting. Check Troubleshooting Guide Page Page With Power on and Thermocouple Leads Page Impinger X2 Series Ovens Shaft and Blower Wheel ReplacementPage TIMER, 30 Minute Cool Down Replacement RELAY, Main FAN, ReplacementFuse Holder Replacement SWITCH, ON/OFF ReplacementAIR Pressure Switch Replacement Burner Control ReplacementAIR Pressure Switch Adjustment Electronic Temperature Control ReplacementTHERMOSTAT, HI-LIMIT Replacement Hairpin Switch Thermocouple ReplacementTemperature Regulation Valve Replacement GAS Valve ReplacementPilot Orifice Replacement Main Burner Orifice ReplacementSpark Igniter Replacement Conveyor Motor ReplacementConveyor Control Replacement Hall Effect Sensor ReplacementChamber Drive Constant Length Type Dayton Gleason Conveyor Control ProgrammingConveyor Control Programming Dayton MOTOR, Direct Drive Conveyor Control Programming Dayton MOTOR, Right Angle Drive Page This page intentionally left blank Letter Part Number Description General ViewPage 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.

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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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