Burner Switch

Check for 120 VAC to neutral on both sides of

 

 

 

switch. If switch is closed and 120 VAC is present

 

 

 

on one side only, replace the switch.

 

 

Air Pressure Switch

Check for 120 VAC on both sides of switch. If

 

 

 

voltage present on one side only, check for air tube

 

 

 

blockage. Adjust air switch. If above fails, replace

 

 

 

air pressure switch.

 

 

 

 

 

NOTE:

(Model 1004 & 1005)

For oven models 1004 and 1005, there is a 1 Amp

 

 

 

fuse located between the 24 VAC output from the

 

 

 

transformer and the coil of the burner motor relay. If

 

 

 

there is 24 VAC output from the transformer, but no

 

 

 

burner motor relay action, check fuse and fuse

 

 

 

holder. Replace as necessary.

 

 

Burner Motor Relay

Delete burner motor relay refer to page 55.

 

 

Burner Blower Motor

Check for 120 VAC supply to burner blower motor.

 

 

 

If 120 VAC is present and motor does not run,

 

 

 

replace motor. WITH POWER OFF: turn blower

 

 

 

wheel to check for locked rotor.

 

 

Centrifugal Switch of Burner

Check for 24 VAC output from secondary of

 

 

Blower Motor

transformer. If voltage is present, check for 24 VAC

 

 

 

at pin 6 and the ground bar on ignition control and

 

 

 

valve assembly. If the burner blower motor is

 

 

 

running and there is no voltage at pin 6 and the

 

 

 

ground bar on the ignition control valve, replace the

 

 

 

burner blower motor.

 

For ovens with

Ignition Control and Valve

Check for 24 VAC supply to the ignition control and

 

Johnson Controls

Assembly

valve assembly at pin 6 and the ground bar. If

 

Ignition Control

 

voltage is present, check for 24 VAC across pin #1

 

(For ovens with

 

and the ground bar (pilot valve). If voltage is not

 

 

present, replace electronic control package. If the

 

Honeywell Ignition

 

pilot valve is energized, check to see that the high

 

control, See Pg. 28)

 

voltage ignitor circuit is also energized. To check,

 

 

 

disconnect the ignitor lead from the bottom of

 

 

 

ignition control. Place female terminal of ignitor

 

 

 

lead approximately 1/8" from terminal post on

 

 

 

ignition control. Spark should jump the 1/8" gap. If

 

 

 

no spark is present, replace ignition control.

 

 

No Pilot

If the ignition control is supplied with 24 VAC, and

 

 

 

the pilot valve (internal to valve assembly) and

 

 

 

ignitor circuits are energized, visually check for pilot

 

 

 

flame. This may be done by opening the small

 

 

 

inspection door on the end of the burner, or by

 

 

 

opening the main oven door and looking under the

 

 

 

lower finger housings on the right side of the oven.

 

 

 

If no pilot flame is visible, check the following.

 

 

Pilot Shut-off Valve

Check to see that pilot shut-off valve is open (shut-

 

 

 

off valve is located between ignition control and

 

 

 

valve assembly and burner.)

 

 

Pilot Tube

Check for gas pressure at pilot tube. Disconnect

 

 

 

pilot tube at burner and connect manometer to pilot

 

 

 

tube. If no gas pressure is present, check for

 

 

 

blockage in pilot tube or pilot shut-off valve. If these

 

 

 

are clear, and there is gas supplied to the oven,

 

 

 

replace the ignition control and valve assembly.

 

 

Pilot Orifice

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

 

 

 

pilot orifice for obstructions. Replace as need

 

 

Burner Ignitor

Check the burner ignitor head for any obstructions,

 

 

 

also check for frayed or broken wire, any type of

 

 

 

damage to spark gap (.100 in. 2.5 m.m.) If there is

 

 

 

visible damage, replace ignitor assembly.

 

Impinger I -–1000 Series Service Manual - International

27

Page 26 Page 28
Page 27
Image 27
Lincoln Series 1200, Series 1000 For ovens with, Johnson Controls, Ignition Control, Honeywell Ignition, Control, See Pg
Page 26 Page 28

Series 1000, Series 1200 specifications

The Lincoln Series 1200 and Series 1000 are two distinguished models in the range of Lincoln Electric welding machines, epitomizing quality, versatility, and advanced technology for both industrial and residential welding applications.

The Lincoln Series 1200 is renowned for its robust build and high-performance capabilities. One of its main features is the ability to perform both MIG (Metal Inert Gas) and stick welding processes, making it a versatile option for various welding requirements. It incorporates an intuitive control panel that allows for easy settings adjustments, ensuring operators can swiftly adapt to different materials and thicknesses. The Series 1200 is equipped with a powerful drive system to provide smooth wire feeding, minimizing downtime due to jams or misfeeds. Additionally, its high-duty cycle support allows continuous operation, making it an ideal choice for professional welders and fabrication shops.

In terms of technology, the Series 1200 employs advanced inverter technology that enhances energy efficiency while reducing the machine’s overall weight. This results in portability without compromising power, making it a practical choice for on-site tasks. Moreover, the machine features an automatic voltage adjustment that optimizes performance based on the input voltage, ensuring reliable operation even under fluctuating power conditions.

On the other hand, the Lincoln Series 1000 is specifically designed for entry-level users and small projects. It shines with its user-friendly interface, which simplifies the welding process for beginners. This model typically includes pre-set parameters and an easy-to-read display, enabling novice operators to achieve excellent welds with minimal experience. Despite its entry-level focus, the Series 1000 does not skimp on performance, offering dependable results across various materials.

Both the Series 1200 and Series 1000 incorporate safety features, including thermal overload protection, ensuring that users can operate the machines with peace of mind. Their durable construction allows for prolonged use in tough work environments without sacrificing reliability.

In conclusion, the Lincoln Series 1200 and Series 1000 cater to a wide range of welding needs, from professional applications to home projects. Their respective features and technologies present options that can fit various skill levels while delivering exceptional welding performance and longevity. Whether you are a seasoned professional or a hobbyist, Lincoln Electric provides reliable solutions to meet your welding requirements.
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