Lincoln 3240-2 With Power on and Thermocouple Leads, Attached to the Electronic Temperature

Page 8

 

 

wiring back to the centrifugal switch of the burner

 

 

blower motor. If voltage is present, check for 24VAC at

 

 

pins #3 and #2 (pilot valve). If voltage is not present,

 

 

replace burner control. If the pilot valve is energized,

 

 

check to see that the high voltage igniter circuit is also

 

 

energized. To check, turn power off, disconnect the

 

 

igniter lead from the ignition control. Turn power on. If

 

 

no spark is visible, replace burner control. If a spark is

 

 

visible at burner control, proceed.

 

Pilot valve

Check for 24VAC supplied 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.

 

No pilot flame

If the ignition control is supplied with 24VAC 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.

 

NOTE: Flame should be

 

 

On at this time

 

Pilot flame, but no main flame

Electronic temperature

Check for 120VAC supplied to electronic temperature

 

control

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

 

 

trace wiring back to the burner switch. Also check for

 

 

120VAC supplied 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

 

 

120VAC output at terminal #21 and neutral. If 120VAC

 

 

is present at terminal #20 and neutral, and the unit is

 

 

not heating, refer to “Temperature regulation valve” for

 

 

next check. If 120 VAC 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 24VAC supplied 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 to see that the switch on the valve is in the “ON”

 

 

position. Check for 24VAC supplied 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.

8

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

Page 7 Page 9
Image 8
Page 7 Page 9
Contents Impinger X2 Ovens With Analog Controls Phase Power SupplyTemperature Control 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 RELAY, Main FAN, Replacement TIMER, 30 Minute Cool Down ReplacementFuse Holder Replacement SWITCH, ON/OFF ReplacementBurner Control Replacement AIR Pressure Switch ReplacementAIR Pressure Switch Adjustment Electronic Temperature Control ReplacementHairpin Switch Thermocouple Replacement THERMOSTAT, HI-LIMIT ReplacementTemperature Regulation Valve Replacement GAS Valve ReplacementMain Burner Orifice Replacement Pilot Orifice ReplacementSpark Igniter 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, 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.

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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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