Lincoln 3262-2, 3270-2 service manual 3240-2 230VAC 50 HZ

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SEQUENCE OF OPERATION

IMPINGER X2 OVENS

3240-2*

230VAC

50 HZ.

1 PHASE

3262-2*

230VAC

50 HZ.

1 PHASE

3270-2*

230VAC

50 HZ.

1 PHASE

 

*NOTE:

 

Model number ending in TS indicates top belt is split belt

 

Model number ending in SB indicates bottom belt is split belt

 

Model number ending in SS indicates both belts are split belts

 

 

POWER SUPPLY

Electrical power to be supplied to the oven by a three conductor service for single phase

 

or a five conductor service for three phase.

 

Black conductor is hot.

 

Red conductor is hot.

 

Orange conductor is hot.

 

White conductor is neutral.

 

Green conductor is ground.

MAIN FAN CIRCUIT

Power is permanently supplied to the normally open contacts of the main fan relay.

 

Power is also supplied, through a 2 amp. fuse, to the 30 minute time delay relay.

 

Closing the oven fan switch enables the 30 minute time delay relay. The 30 minute time

 

delay relay supplies 220/240VAC to the coil of the main fan relay. These normally open

 

contacts now close energizing the main fan motor. Closing the main fan switch also

 

supplies 220/240VAC to the burner and conveyor switches.

BURNER CIRCUIT

Closing the main fan switch supplies 220/240VAC to the normally open burner switch.

 

Closing the burner switch supplies 220/240VAC, through the EMI filter, to the electronic

 

temperature control. 220/240VAC is supplied, through the air pressure switch and the

 

oven cavity hi-limit thermostat, to the burner control. When the burner control is

 

energized, 220/240VAC is supplied to the burner blower motor. The normally open air

 

pressure switch closes upon sensing air pressure. After a pre-purge of 30 seconds, the

 

pilot valve and spark are energized. Ignition should now occur. After the pilot flame is

 

proven, the main valve is energized.

TEMPERATURE CONTROL

Closing the main fan switch and burner switch supplies 220/240VAC to the electronic

 

temperature control. The electronic temperature control is adjusted to the desired

 

temperature. The thermocouple will provide varying millivolts to the electronic

 

temperature control. The temperature control supplies 220/240VAC to the temperature

 

regulation valve at intermittent intervals to maintain desired temperature.

CONVEYOR DRIVE

THE OVEN WILL CONTAIN BETWEEN TWO AND FOUR SEPARATE CONVEYOR

 

DRIVE SYSTEMS. THE SEQUENCE OF OPERATIONS WILL BE THE SAME FOR

 

EACH MOTOR SYSTEM.

 

Closing the main fan switch supplies 220/240VAC, through the EMI filter, to the normally

 

open conveyor switch, through a 2 Amp. fuse, to the conveyor control. AC voltage is

 

converted to DC voltage and DC voltage is supplied, at terminals A+ and A-, to the

 

conveyor motor. Adjusting the conveyor control will vary the DC output voltage. The

 

speed of the motor will increase or decrease as the DC voltage from the conveyor

 

control increases or decreases.

NOTE:

The conveyor control uses a hall effect sensor and magnet, mounted on the conveyor

 

motor that senses motor speed. The sensor detects any change in motor load (± RPM)

 

and the voltage to the motor is adjusted accordingly.

AUTOMATIC COOL DOWN

When the oven is started, the 30 minute time delay relay is enabled, permitting the oven

 

fan to operate for approximately 30 minutes after the oven is shut off, to cool the oven.

 

When the oven is shut off, the 30 minute time delay relay will keep the coil of the main

 

fan relay closed for 30 minutes, maintaining operation of the main fan motor.

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

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Contents Impinger X2 Ovens With Analog Controls Main FAN Circuit PhasePower Supply Temperature Control3240-2 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 SWITCH, ON/OFF Replacement RELAY, Main FAN, ReplacementTIMER, 30 Minute Cool Down Replacement Fuse Holder ReplacementElectronic Temperature Control Replacement Burner Control ReplacementAIR Pressure Switch Replacement AIR Pressure Switch AdjustmentGAS Valve Replacement Hairpin Switch Thermocouple ReplacementTHERMOSTAT, HI-LIMIT Replacement Temperature Regulation Valve ReplacementConveyor Motor Replacement Main Burner Orifice ReplacementPilot Orifice Replacement Spark Igniter 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, 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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