bearings. Replace bearings as needed.

Oven will not heat

Gas supply

Check for adequate gas supply to oven.

 

Manual gas shut off valve

Check to see that the manual gas shut off valve is

 

 

open. Also, check flexible gas line connection for any

 

 

damage.

 

Main fan motor

Check for main fan operation. If it is not operating, refer

 

 

to “Oven fan will not run”.

 

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, control (F8)

Check, replace if necessary.

 

Fuse holder

Check, replace if necessary.

 

Switch, oven fan

Check for 120VAC to the switch, if no voltage is

 

 

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

 

 

continuity between switch terminals. Replace switch as

 

 

needed.

 

Switch, burner

Check for 120VAC to the switch, if no voltage is

 

 

present, trace wiring back to the oven fan switch.

 

 

Check continuity between switch terminals. Replace

 

 

switch as needed.

 

Air pressure switch

Check for 120VAC to the air pressure switch. If no

 

 

voltage is present, trace wiring back to burner switch.

 

 

This normally open switch should close when the main

 

 

fan is activated. Check air switch tube for blockage or

 

 

any obstructions, repair as needed. Refer to the

 

 

“Removal and installation” section for proper

 

 

adjustment of air pressure switch. Replace air pressure

 

 

switch as needed.

 

Transformer, burner

Check for 120VAC supplied to primary of transformer. If

 

 

no voltage is present, trace wiring back to the air

 

 

pressure switch. If voltage is present, check for 24VAC

 

 

at transformer secondary. If there is primary voltage but

 

 

no secondary voltage, replace burner transformer.

 

Relay, burner blower

Check for 24VAC supply to relay coil. If no voltage is

 

 

present, trace wiring back to burner transformer. Check

 

 

for 120VAC to relay contact. If no voltage is present,

 

 

trace wiring back to air pressure switch. When 24VAC

 

 

is applied to the coil, there will be a delay of 20 – 30

 

 

seconds. After this time delay, the relay contacts

 

 

should close. If there is 24VAC applied, but the

 

 

contacts do not close, replace the burner blower relay.

 

Motor, burner blower

Check for 120VAC supplied to the burner blower motor.

 

 

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

 

 

blower relay. If voltage is present, and the motor is not

 

 

turning, check for opens, shorts or grounds.

 

 

WITH POWER OFF: Check for locked rotor.

 

 

Replace burner blower motor as needed.

 

 

 

 

Centrifugal switch of

Check for 24VAC supplied to centrifugal switch at wire

 

Burner blower motor

S5. If no voltage is present, trace wiring back to the

 

 

burner transformer. If voltage is present, check for

 

 

24VAC out of centrifugal switch at wire #32. If there is

 

 

voltage in, but there is no voltage out, and the burner

 

 

blower motor is running, replace the burner blower

 

 

motor.

 

 

 

 

Burner control

Check for 24VAC supplied to the burner control at

 

 

terminals #5 and #6. If no voltage is present, trace

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

7

Page 6 Page 8
Page 7
Image 7
Lincoln 3270-2, 3262-2, 3240-2 service manual Bearings. Replace bearings as needed
Page 6 Page 8

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.

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.

In addition to its impressive technical specifications, the Lincoln 3270-2 boasts exceptional build quality. The robust construction of the unit ensures it can withstand the rigors of a busy workshop or job site. Its durable outer casing provides protection against dust and debris, enhancing its longevity.

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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