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

Page 9

 

Temperature regulation valve

If 120VAC 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. 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 120VAC supplied to relay terminal #13. If

 

 

voltage is not present, trace wiring back to power

 

 

supply. If voltage is present, check for 120VAC 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 120VAC supplied 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 120VAC supplied to conveyor switch. If no

 

 

voltage is present, trace wiring back to fuse holder.

 

 

Check continuity between switch terminals. Replace

 

 

switch as needed.

 

Control, conveyor

Check for 120VAC supplied to conveyor control at

 

 

terminals #1 (AC) and #2 (AC). If no voltage is present,

 

 

trace wiring back to conveyor switch. If AC voltage is

 

 

present, check for DC voltage output at terminals #3

 

 

(A-) and #4 (A+). If there is AC voltage in, but no DC

 

 

voltage out of the conveyor control. Replace the

 

 

conveyor control. If there is D.C. voltage output,

 

 

proceed.

 

Fuse, 2 Amp

Check, replace if necessary.

 

Fuse holder

Check for D.C. voltage supplied to fuse holder. If no

 

 

voltage is present, trace wiring back to conveyor

 

 

control. Check fuse holder, replace if necessary.

 

Switch, conveyor reversing

Check for D.C. voltage supplied to the reversing switch.

 

 

If no voltage is present, trace wiring back to the fuse

 

 

holder. Check continuity between switch terminals.

 

 

Replace switch as needed.

 

Conveyor motor

Check for D.C. voltage to the conveyor motor. If no

 

 

voltage is present, trace wiring back to the reversing

 

 

switch. If voltage is present and the motor will not run,

 

 

check the motor windings for opens or shorts. Check

 

 

motor brushes for excessive wear. Replace motor

 

 

brushes as needed.

 

 

If any of the above fails, replace conveyor motor.

 

Conveyor

Check for any mechanical problems in the conveyor

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

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Image 9
Page 8 Page 10
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, 3270-2, 3262-2 specifications

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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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